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Low Dropout Fixed Voltage Regulator
TLE42994
1
Features * * * * * * * * * * * * * * * * *
Overview
Output Voltage 5 V 2% Ouput Current up to 150 mA Extreme Low Current Consumption In ON State Enable Function: Below 1 A Current Consumption In OFF State Early Warning Power-on and Undervoltage Reset with Programmable Delay Time Reset Low Down to VQ = 1 V Adjustable Reset Threshold Very Low Dropout Voltage Output Current Limitation Reverse Polarity Protection Overtemperature Protection Suitable for Use in Automotive Electronics Wide Temperature Range from -40 C up to 150 C Input Voltage Range from -42 V to 45 V Green Product (RoHS compliant) AEC Qualified
PG-DSO-8
PG-DSO-14
Description The TLE42994G is a monolithic integrated low dropout voltage regulator, especially designed for automotive applications that need to be in ON state during the car's engine is turned off. An input voltage up to 45 V is regulated to an output voltage of 5.0 V. The component is able to drive loads up to 150 mA. It is short-circuit protected by the implemented current limitation and has an integrated overtemperature shutdown. A reset signal is generated for an output voltage VQ,rt of typically 4.65 V. This threshold can be decreased by an external resistor divider. The power-on reset delay time can be programmed by
PG-SSOP-14
Type TLE42994G TLE42994GM TLE42994E Data Sheet
Package PG-DSO-8 PG-DSO-14 PG-SSOP-14 1
Marking 42994G 42994GM 42994E Rev. 1.1, 2009-05-19
TLE42994
Overview the external delay capacitor. The additional sense comparator provides an early warning function: Any voltage (e.g. the input voltage) can be monitored, an under-voltage condition is indicated by setting the comparator's output to low. The TLE42994GM (PG-DSO-14 package) and TLE42994E (PG-SSOP-14 package) include additionally an Enable function permitting enabling/disabling the regulator. In case the regulator is disabled it consumes less current than 1 A. Dimensioning Information on External Components The input capacitor CI is recommended for compensation of line influences. The output capacitor CQ is necessary for the stability of the control loop. Circuit Description The control amplifier compares a reference voltage to a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer. Saturation control as a function of the load current prevents any oversaturation of the power element. The component also has a number of internal circuits for protection against: * * * Overload Overtemperature Reverse polarity
Data Sheet
2
Rev. 1.1, 2009-05-19
TLE42994
Block Diagram
2
Block Diagram
I
BandGapReference Current and Saturation Control
Q
RSO
RRO
SO SI Reference Reset Control RADJ RO
D
GND
AEB03103
Figure 1
Block Diagram TLE42994G (package PG-DSO-8)
Data Sheet
3
Rev. 1.1, 2009-05-19
TLE42994
Block Diagram
TLE 4299
I
BandGapReference Current and Saturation Control
Q
RSO
EN INH
Inhibit Enable Control
RRO
SO
SI Reference Reset Control RADJ RO
D
GND
AEB03104
Figure 2
Block Diagram TLE42994GM, TLE42994E (packages PG-DSO-14, PG-SSOP-14)
Data Sheet
4
Rev. 1.1, 2009-05-19
TLE42994
Pin Configuration
3
3.1
Pin Configuration
Pin Assignment TLE42994G (PG-DSO-8)
S RADJ D
1 2 3 4
8 7 6 5
AEP01668
Q SO RO GND
Figure 3
Pin Configuration (top view)
3.2
Pin 1
Pin Definitions and Functions TLE42994G (PG-DSO-8)
Symbol I Function Input for compensating line influences, a capacitor to GND close to the IC terminals is recommended Sense Input connect the voltage to be monitored; connect to Q if the sense comparator is not needed Reset Threshold Adjust connect an external voltage divider to adjust reset threshold; connect to GND for using internal threshold Reset Delay Timing connect a ceramic capacitor to GND for adjusting the reset delay time; leave open if the reset function is not needed Ground Reset Output open collector output; internally linked to the output via a 20k pull-up resistor; leave open if the reset function is not needed Sense Output open collector output; internally linked to the output via a 20k pull-up resistor; leave open if the sense comparator is not needed Output block to GND with a capacitor close to the IC terminals, respecting the values given for its capacitance CQ and ESR in "Functional Range" on Page 10
2
SI
3
RADJ
4
D
5 6
GND
RO
7
SO
8
Q
Data Sheet
5
Rev. 1.1, 2009-05-19
TLE42994
Pin Configuration
3.3
Pin Assignment TLE42994GM (PG-DSO-14)
RADJ D GND GND GND EN RO 1 2 3 4 5 6 7 14 13 12 11 10 9 8 SI I GND GND GND Q SO
PinConfig_PG-DSO-14.vsd
Figure 4
Pin Configuration (top view)
3.4
Pin 1
Pin Definitions and Functions TLE42994GM (PG-DSO-14)
Symbol Function Reset Threshold Adjust connect an external voltage divider to adjust reset threshold; connect to GND for using internal threshold Reset Delay Timing connect a ceramic capacitor to GND for adjusting the reset delay time; leave open if the reset function is not needed Ground connect all pins to PCB and heatsink area Enable high signal enables the regulator; low signal disables the regulator; connect to I if the Enable function is not needed Reset Output open collector output; internally linked to the output via a 20k pull-up resistor; leave open if the reset function is not needed Sense Output open collector output; internally linked to the output via a 20k pull-up resistor; leave open if the sense comparator is not needed Output block to GND with a capacitor close to the IC terminals, respecting the values given for its capacitance CQ and ESR in the table "Functional Range" on Page 10 Ground connect all pins to PCB and heatsink area Input for compensating line influences, a capacitor to GND close to the IC terminals is recommended Sense Input connect the voltage to be monitored; connect to Q if the sense comparator is not needed 6 Rev. 1.1, 2009-05-19
RADJ
2
D
3, 4, 5 6
GND
EN
7
RO
8
SO
9
Q
10, 11, 12 GND 13 I
14
SI
Data Sheet
TLE42994
Pin Configuration
3.5
Pin Assignment TLE42994E (PG-SSOP-14)
RADJ n.c. D GND EN n.c. RO
1 2 3 4 5 6 7
14 13 12 11 10 9 8
PINCONFIG_SSOP-14.VSD
SI I n.c. Q n.c. n.c. SO
Figure 5
Pin Configuration (top view)
3.6
Pin 1
Pin Definitions and Functions TLE42994E (PG-SSOP-14)
Symbol Function Reset Threshold Adjust connect an external voltage divider to adjust reset threshold; connect to GND for using internal threshold not connected leave open or connect to GND Reset Delay Timing connect a ceramic capacitor to GND for adjusting the reset delay time; leave open if the reset function is not needed Ground connect all pins to PCB and heatsink area Enable high signal enables the regulator; low signal disables the regulator; connect to I if the Enable function is not needed Reset Output open collector output; internally linked to the output via a 20k pull-up resistor; leave open if the reset function is not needed Sense Output open collector output; internally linked to the output via a 20k pull-up resistor; leave open if the sense comparator is not needed not connected leave open or connect to GND Output block to GND with a capacitor close to the IC terminals, respecting the values given for its capacitance CQ and ESR in the table "Functional Range" on Page 10 Input for compensating line influences, a capacitor to GND close to the IC terminals is recommended
RADJ
2, 6 3
n.c.
D
4 5
GND
EN
7
RO
8
SO
9, 10, 12 11
n.c. Q
13
I
Data Sheet
7
Rev. 1.1, 2009-05-19
TLE42994
Pin Configuration Pin 14 Symbol SI Function Sense Input connect the voltage to be monitored; connect to Q if the sense comparator is not needed Exposed Pad attach the exposed pad on package bottom to the heatsink area on circuit board; connect to GND
PAD
-
Data Sheet
8
Rev. 1.1, 2009-05-19
TLE42994
General Product Characteristics
4
4.1
General Product Characteristics
Absolute Maximum Ratings
Absolute Maximum Ratings 1) -40 C Tj 150 C; all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Limit Values Min. Input I, Enable Input EN, Sense Input SI 4.1.1 Voltage Max. 45 V - Unit Conditions
VI, VEN, VSI VQ, VRO, VSO
-40
Output Q, Reset Output RO, Sense Output SO 4.1.2 Voltage -0.3 7 V -
Reset Delay D, Reset Threshold RADJ 4.1.3 4.1.4 4.1.5 4.1.6 4.1.7 4.1.8 Voltage Junction Temperature Storage Temperature ESD Absorption
VD, VRADJ -0.3 Tj Tstg VESD,HBM VESD,CDM
-40 -50 -2 -500 -750
7 150 150 2 500 750
V C C kV V V
- - - Human Body Model (HBM)2) Charge Device Model (CDM)3) Charge Device Model (CDM)3) at corner pins
Temperature
ESD Absorption
1) not subject to production test, specified by design 2) ESD susceptibility Human Body Model "HBM" according to AEC-Q100-002 - JESD22-A114 3) ESD susceptibility Charged Device Model "CDM" according to ESDA STM5.3.1
Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the data sheet. Fault conditions are considered as "outside" normal operating range. Protection functions are not designed for continuous repetitive operation.
Data Sheet
9
Rev. 1.1, 2009-05-19
TLE42994
General Product Characteristics
4.2
Pos. 4.2.1 4.2.2 4.2.3
Functional Range
Parameter Input Voltage Output Capacitor's Requirements for Stability Junction Temperature Symbol Min. Limit Values Max. 45 - 3 150 V F C - -1) -2) - 5.5 22 - -40 Unit Conditions
VI CQ ESR(CQ) Tj
1) the minimum output capacitance requirement is applicable for a worst case capacitance tolerance of 30% 2) relevant ESR value at f = 10 kHz
Note: Within the functional range the IC operates as described in the circuit description. The electrical characteristics are specified within the conditions given in the related electrical characteristics table.
Data Sheet
10
Rev. 1.1, 2009-05-19
TLE42994
General Product Characteristics
4.3
Pos.
Thermal Resistance
Parameter Symbol Limit Value Min. Typ. - 113 185 142 136 Max. 60 - - - - K/W K/W K/W K/W K/W measured to pin 5
2)
Unit
Conditions
TLE42994G (PG-DSO-8) 4.3.4 4.3.5 4.3.6 4.3.7 4.3.8 TLE42994GM (PG-DSO-14) 4.3.9 4.3.10 4.3.11 4.3.12 4.3.13 TLE42994E (PG-SSOP-14) 4.3.14 4.3.15 4.3.16 4.3.17 4.3.18 Junction to Case1) Junction to Ambient1) Junction to Soldering Point1) Junction to Ambient
1)
Junction to Soldering Point1) Junction to Ambient
1)
RthJSP RthJA
- - - - -
Footprint only3) 300mm2 heatsink area on PCB3) 600mm2 heatsink area on PCB3) measured to all GND pins
2)
RthJSP RthJA
- - - - -
- 63 112 73 65
30 - - - -
K/W K/W K/W K/W K/W
Footprint only3) 300mm2 heatsink area on PCB3) 600mm2 heatsink area on PCB3) -
2)
RthJC RthJA
- - - - -
10 47 140 63 53
- - - - -
K/W K/W K/W K/W K/W
Footprint only3) 300mm2 heatsink area on PCB3) 600mm2 heatsink area on PCB3)
1) not subject to production test, specified by design 2) Specified RthJA value is according to Jedec JESD51-2,-5,-7 at natural convection on FR4 2s2p board; The Product (Chip+Package) was simulated on a 76.2 x 114.3 x 1.5 mm board with 2 inner copper layers (2 x 70m Cu, 2 x 35m Cu). Where applicable a thermal via array under the exposed pad contacted the first inner copper layer. 3) Specified RthJA value is according to JEDEC JESD 51-3 at natural convection on FR4 1s0p board; The Product (Chip+Package) was simulated on a 76.2 x 114.3 x 1.5 mm3 board with 1 copper layer (1 x 70m Cu).
Data Sheet
11
Rev. 1.1, 2009-05-19
TLE42994
Block Description and Electrical Characteristics
5
5.1
Block Description and Electrical Characteristics
Voltage Regulator
The output voltage VQ is controlled by comparing a portion of it to an internal reference and driving a PNP pass transistor accordingly. The control loop stability depends on the output capacitor CQ, the load current, the chip temperature and the poles/zeros introduced by the integrated circuit. To ensure stable operation, the output capacitor's capacitance and its equivalent series resistor ESR requirements given in the table "Functional Range" on Page 10 have to be maintained. For details see also the typical performance graph "Output Capacitor Series Resistor ESR(CQ) versus Output Current IQ" on Page 15. As the output capacitor also has to buffer load steps it should be sized according to the application's needs. An input capacitor CI is strongly recommended to compensate line influences. Connect the capacitors close to the component's terminals. A protection circuitry prevents the IC as well as the application from destruction in case of catastrophic events. These safeguards contain an output current limitation, a reverse polarity protection as well as a thermal shutdown in case of overtemperature. To avoid excessive power dissipation that could never be handled by the pass element and the package, the maximum output current is decreased at input voltages above VI = 22 V. The overtemperature shutdown circuit prevents the IC from immediate destruction under fault conditions (e.g. output continuously short-circuited) by switching off the power stage. After the chip has cooled down, the regulator restarts. This leads to an oscillatory behaviour of the output voltage until the fault is removed. However, junction temperatures above 150 C are outside the maximum ratings and therefore significantly reduce the IC's lifetime. The TLE42994 allows a negative supply voltage. In this fault condition, small currents are flowing into the IC, increasing its junction temperature. This has to be considered for the thermal design, respecting that the thermal protection circuit is not operating during reverse polarity conditions.
Supply
II
I
Q
IQ
Regulated Output Voltage
Saturation Control Current Limitation C CI Temperature S hutdown Bandgap Reference E SR
}
CQ
LOAD
BlockDiagram_VoltageRegulator.vsd
GND
Figure 6
Voltage Regulator
Data Sheet
12
Rev. 1.1, 2009-05-19
TLE42994
Block Description and Electrical Characteristics
Electrical Characteristics Voltage Regulator
VI = 13.5 V, -40 C Tj 150 C, all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified) Pos. 5.1.1 5.1.2 5.1.3 5.1.4 5.1.5 5.1.6 5.1.7 5.1.8 5.1.9 Output Current Limitation Load Regulation steady-state Line Regulation steady-state Dropout Voltage1) Parameter Output Voltage Symbol Min. Limit Values Typ. 5.0 5.0 400 -5 10 220 - 15 66 Max. 5.1 5.15 500 - 25 500 200 - - mA mV mV mV C C dB V 100 A < IQ < 100 mA 6 V < VI < 18 V 100 A < IQ < 150 mA 6 V < VI < 18 V 4.9 4.85 Unit Conditions
VQ
IQ,max VQ,load VQ,line Vdr Tj,sd Tj,sdh PSRR
150 -30 - - 151 - -
Vdr = VI - VQ
Overtemperature Shutdown Threshold Overtemperature Shutdown Threshold Hysteresis Power Supply Ripple Rejection3)
VQ = 4.8V IQ = 1 mA to 100 mA VI = 6 V VI = 6 V to 32 V IQ = 1 mA IQ = 100 mA Tj increasing2) Tj decreasing2)
fripple = 100 Hz Vripple = 1 Vpp IQ = 100 mA 1) measured when the output voltage VQ has dropped 100mV from the nominal value obtained at VI = 13.5V
2) not subject to production test, specified by design 3) not subject to production test, specified by design
Data Sheet
13
Rev. 1.1, 2009-05-19
TLE42994
Block Description and Electrical Characteristics
5.2
Typical Performance Characteristics Voltage Regulator
Output Current IQ versus Input Voltage VI
01_VQ_TJ.VSD
Output Voltage VQ versus Junction Temperature TJ
5,20
400 350 300
02_IQ_VI.VSD
5,10
5,00
T j = -40 C
IQ,max [mA]
250 200 150 100
T j = 25 C T j = 150 C
V Q [V]
4,90
VI = 7 V I Q = 5 mA
4,80
4,70
50 0
4,60 -40 0 40 80 120 160
0
10
20
30
40
50
T j [C]
Power Supply Ripple Rejection PSRR versus ripple frequency fr
100 90 80 70
03_PSRR_FR.VSD
V I [V]
Line Regulation VQ,line versus Input Voltage Change VI
0,9 0,8 0,7 0,6
04_DVQ_DVI.VSD
T j = -40 C T j = 25 C T j = 150 C
T j = 150 C
PSRR [dB]
V Q [mV]
60 50 40 30 20 10 0 0,01
T j = 25 C
0,5 0,4 0,3 0,2 0,1 0
T j = -40 C
I Q = 10 mA C Q = 10 F
ceramic V I = 13.5 V
V ripple = 0.5 Vpp
0,1 1 10 100 1000
0
10
20
30
40
f [kHz]
V I [V]
Data Sheet
14
Rev. 1.1, 2009-05-19
TLE42994
Block Description and Electrical Characteristics
5.3
Load Regulation VQ,load versus Output Current Change IQ
5 0 -5
05_DVQ_DIQ.VSD
Output Capacitor Series Resistor ESR(CQ) versus Output Current IQ
100
06_ESR_IQ_CORRECTED.VSD
VI = 6 V
10
Unstable Region
ESR(C Q) [ ]
V Q [mV]
-10
1
Tj = -40 C
-15
C Q = 22 F T j = -40..150 C
V I = 6..28 V
Tj = 25 C Tj = 150 C
0,1
-20 -25 0 50 100 150
Stable Region
0,01 0 50 100 150
I Q [mA]
Dropout Voltage Vdr versus Junction Temperature Ti
300
07_VDR_TJ.VSD
I Q [mA]
I Q = 100 mA
250
200
V DR [mV]
150
I Q = 25 mA
100
50
I Q = 5 mA
0 -40 0 40 80 120 160
T j [C]
Data Sheet
15
Rev. 1.1, 2009-05-19
TLE42994
Block Description and Electrical Characteristics
5.4
Current Consumption
Electrical Characteristics Voltage Regulator VI = 13.5 V, -40 C Tj 150 C, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. 5.4.1 Parameter Current Consumption Symbol Min. Limit Values Typ. - Max. 1 A - Unit Conditions
Iq = II - IQ
Iq
VEN = 0 V
TLE42994GM and TLE42994E only Tj = 25 C
5.4.2
-
65
100
A
Enable HIGH
IQ = 100 A Tj = 25 C
5.4.3 - 65 105 A Enable HIGH IQ = 100 A Tj 85 C Enable HIGH IQ = 10 mA Enable HIGH IQ = 50 mA
5.4.4 5.4.5
- -
0.17 0.7
0.5 2
mA mA
Data Sheet
16
Rev. 1.1, 2009-05-19
TLE42994
Block Description and Electrical Characteristics
5.5
Typical Performance Characteristics Current Consumption
Current Consumption Iq versus Output Current IQ (IQ low)
08_IQ_IQ.VSD
Current Consumption Iq versus Output Current IQ
6
V I = 13.5 V
1 0,9
V I = 13.5 V
09_IQ_IQ_IQ LOW.VSD
5
T j = 150 C T j = 25 C
T j = 150 C T j = 25 C
0,8 0,7 0,6
4
I q [mA]
I q [mA]
0 50 100 150
3
0,5 0,4 0,3 0,2 0,1
2
1
0
0 0 10 20 30 40 50
I Q [mA]
Current Consumption Iq versus Input Voltage VI
12
10_IQ _VI.VSD
I Q [mA]
10
8
I q [mA]
6
R LOAD = 100
4
2
R LOAD = 50 k
0 0 10 20 30 40
V I [V]
Data Sheet
17
Rev. 1.1, 2009-05-19
TLE42994
Block Description and Electrical Characteristics
5.6
Enable Function (only TLE42994GM and TLE42994E)
Electrical Characteristics Voltage Regulator VI = 13.5 V, -40 C Tj 150 C, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. 5.6.1 5.6.2 5.6.3 5.6.4 Parameter Enable OFF Voltage Range Enable ON Voltage Range Enable OFF Input Current Enable ON Input Current Symbol Min. Limit Values Typ. - - 0.5 3 Max. 0.8 - 2 5 V V A A - - - 3.5 - - Unit Conditions
VEN,OFF VEN,ON IEN,OFF IEN,ON
VEN = 0 V VEN = 5 V
5.7
Reset Function
The reset function provides several features:
Output Undervoltage Reset: An output undervoltage condition is indicated by setting the Reset Output RO to "low". This signal might be used to reset a microcontroller during low supply voltage.
Power-On Reset Delay Time: The power-on reset delay time trd allows a microcontoller and oscillator to start up. This delay time is the time frame from exceeding the reset switching threshold VRT until the reset is released by switching the reset output "RO" from "low" to "high". The power-on reset delay time trd is defined by an external delay capacitor CD connected to pin D charged by the delay capacitor charge current ID,ch starting from VD = 0 V. If the application needs a power-on reset delay time trd different from the value given in Item 5.7.8, the delay capacitor's value can be derived from the specified values in Item 5.7.8 and the desired power-on delay time:
t rd, new C D = ---------------- x 100nF t rd
with * * *
CD: capacitance of the delay capacitor to be chosen trd,new: desired power-on reset delay time trd: power-on reset delay time specified in this datasheet
For a precise calculation also take the delay capacitor's tolerance into consideration.
Data Sheet
18
Rev. 1.1, 2009-05-19
TLE42994
Block Description and Electrical Characteristics Reset Reaction Time: The reset reaction time avoids that short undervoltage spikes trigger an unwanted reset "low" signal. The reset reaction rime trr considers the internal reaction time trr,int and the discharge time trr,d defined by the external delay capacitor CD (see typical performance graph for details). Hence, the total reset reaction time becomes:
t rr = t rd, int + t rr, d
with * * *
trr: reset reaction time trr,int: internal reset reaction time trr,d: reset discharge
Optional Reset Output Pull-Up Resistor RRO,ext: The Reset Output RO is an open collector output with an integrated pull-up resistor. If needed, an external pull-up resistor to the output Q can be added. In Table "Electrical Characteristics Reset Function" on Page 22 a minimum value for the external resistor RRO,ext is given. Reset Adjust Function The undervoltage reset switching threshold can be adjusted according to the application's needs by connecting an external voltage divider (RADJ1, RADJ2) at pin RADJ. For selecting the default threshold connect pin RADJ to GND. When dimensioning the voltage divider, take into consideration that there will be an additional current constantly flowing through the resistors. With a voltage divider connected, the reset switching threshold VRT,new is calculated as follows:
R ADJ, 1 + R ADJ, 2 V RT, new = ----------------------------------------- x V RADJ, th R ADJ, 2
with * * *
VRT,new: the desired new reset switching threshold RADJ1, RADJ2: resistors of the external voltage divider VRADJ,th: reset adjust switching threshold given in Table "Electrical Characteristics Reset Function" on Page 22
Data Sheet
19
Rev. 1.1, 2009-05-19
TLE42994
Block Description and Electrical Characteristics
Supply
I
Q optional
VDD
Int. Supply Control
RRO ID,ch
RO
CQ I RO
RRO,ext
Reset
VRADJ,th
OR
VDST
RADJ,1 ID,dch
RADJ optional
MicroController
I RADJ
GND
BlockDiagram_ResetAdjust.vsd
D
RADJ,2 CD
GND
Figure 7
Block Diagram Reset Function
Data Sheet
20
Rev. 1.1, 2009-05-19
TLE42994
Block Description and Electrical Characteristics
VI
t VQ VRT t < trr,total
1V
t VD V DU V DRL t VRO t rd trr,total trd t rr,total t rd t rr,total t rd
V RO,low
1V
t
Thermal Shutdown Input Voltage Dip Undervoltage Spike at output Overload
T i mi n g Di a g ra m_ Re se t . vs
Figure 8
Timing Diagram Reset
Data Sheet
21
Rev. 1.1, 2009-05-19
TLE42994
Block Description and Electrical Characteristics
Electrical Characteristics Reset Function
VI = 13.5 V, -40 C Tj 150 C, all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified) Pos. Parameter Symbol Min. Output Undervoltage Reset 5.7.1 Default Output Undervoltage Reset VRT Switching Thresholds Reset Adjust Switching Threshold Reset Adjustment Range1) Reset Output Low Voltage Reset Output Internal Pull-up Resistor to VQ Optional Reset Output External Pull-up Resistor to VQ Delay Pin Output Voltage Power On Reset Delay Time 4.5 4.65 4.8 V Limit Values Typ. Max. Unit Conditions
VQ decreasing
Output Undervoltage Reset Threshold Adjustment 5.7.2 5.7.3 5.7.4 5.7.5 5.7.6
VRADJ,th VRT,range VRO,low RRO RRO,ext
1.26 3.50 - 10 5.6
1.36 - 0.1 20 -
1.44 4.65 0.4 40 -
V V V k k
3.5 V VQ < 5 V - 1 V VQ VRT no external RRO,ext - 1 V VQ VRT ; VRO 0.4 V -
Reset Output RO
Reset Delay Timing 5.7.7 5.7.8
VD trd VDU VDL ID,ch ID,dch trr,d
- 17
- 28
5 35
V ms
CD = 100 nF
- -
Calculated Value:
trd = CD * VDU / ID,ch
5.7.9 5.7.10 5.7.11 5.7.12 5.7.13 Upper Delay Switching Threshold Lower Delay Switching Threshold Delay Capacitor Charge Current Delay Capacitor Reset Discharge Current Delay Capacitor Discharge Time - - - - - 1.85 0.50 8.0 70 1.9 - - - - 3 V V A mA s
VD = 1 V VD = 1 V
Calculated Value:
5.7.14 5.7.15
Internal Reset Reaction Time Reset Reaction Time
trr,int trr,total
- -
14 15.9
20 23
s s
trr,d = CD*(VDU VDL)/ ID,dch CD = 100 nF CD = 0 nF 2)
Calculated Value: trr,total = trr,int + trr,d CD = 100 nF
1) VRT is scaled linearly, in case the Reset Switching Threshold is modified 2) parameter not subject to production test; specified by design
Data Sheet
22
Rev. 1.1, 2009-05-19
TLE42994
Block Description and Electrical Characteristics
5.8
Typical Performance Characteristics Reset
Power On Reset Delay Time trd versus Junction Temperature Tj
Undervoltage Reset Switching Threshold VRT versus Junction Temperature Tj
5
11_VRT_TJ.VSD
30 25
12_TRD_TJ.VSD
4,9
C D = 100 nF
t rd [ m s ]
4,8
20 15 10 5
V RT [V]
4,7
4,6
4,5
0
4,4 -40 0 40 80 120 160
-40
T j [C]
10
60
110
160
T j [C]
Delay Capacitor Discharge Time trr,d versus Junction Temperature Tj
2,5
14_TRRD_TJ.VSD
13_TRRINT _TJ.VSD
Internal Reset Reaction Time trr,int versus Junction Temperature Tj
25
20
2
15
1,5
t rr,int [s]
t rr,d [s]
10
1
5
0,5
0 -40 10 60 110 160
0 -40
10
60
110
160
T j [C]
T j [C]
Data Sheet
23
Rev. 1.1, 2009-05-19
TLE42994
Block Description and Electrical Characteristics
5.9
Early Warning Function
The additional sense comparator provides an early warning function: Any voltage (e.g. the input voltage) can be monitored, an undervoltage condition is indicated by setting the comparator's output to low.
Sense Input Voltage VSI, High
VSI, Low
t Sense Output High
Low t
AED03049
Figure 9
Sense Timing Diagram
Electrical Characteristics Early Warning Function
VI = 13.5 V, -40 C Tj 150 C, all voltages with respect to ground, positive current flowing into pin
(unless otherwise specified) Pos. Parameter Symbol Min. Sense Comparator Input 5.9.1 5.9.2 5.9.3 5.9.4 Sense Threshold High Sense Threshold Low Sense Switching Hysteresis Sense Input Current Limit Values Typ. 1.45 1.36 90 -0.1 Max. 1.54 1.44 130 1 V V mV A - - Unit Conditions
VSI,high VSI,low VSI,hy ISI
1.34 1.26 50 -1 24
VSI,hy = VSI,high - VSI,low
- Rev. 1.1, 2009-05-19
Data Sheet
TLE42994
Block Description and Electrical Characteristics Electrical Characteristics Early Warning Function
VI = 13.5 V, -40 C Tj 150 C, all voltages with respect to ground, positive current flowing into pin (unless otherwise specified)
Pos. Parameter Symbol Min. Sense Comparator Output 5.9.5 Sense Output Low Voltage Limit Values Typ. 0.1 Max. 0.4 V Unit Conditions
VSO,low
-
VSI < VSI,low VI > 5.5 V
-
no external RSO,ext
5.9.6 5.9.7
Sense Output Internal Pull-up Resistor to VQ
RSO
10 5.6
20 -
40 -
k k
Optional Sense Output External RSO,ext Pull-up Resistor to VQ
VI > 5.5 V VSO 0.4 V
5.10
Typical Performance Characteristics Early Warning
Sense Thresholds VSI,high, VSI,low versus Junction Temperature Tj
1,45
15_VSI_T J.VSD
V SI,high
1,4 1,35
V SI,low
1,3 1,25 1,2 1,15 1,1 1,05 1 -40 10 60 110 160
V SI [V]
T j [C]
Data Sheet
25
Rev. 1.1, 2009-05-19
TLE42994
Package Outlines
6
Package Outlines
0.35 x 45
1.75 MAX.
0.175 0.07 (1.45)
4 -0.21)
0.19 +0.06
C
1.27 0.41+0.1 2) -0.06 0.2
M
0.1 A B 8x
B 6 0.2
0.64 0.25 0.2
M
8 MAX.
C 8x
GPS01181
Rev. 1.1, 2009-05-19
8
5
1
4
5 -0.2 1) Index Marking
A
1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Lead width can be 0.61 max. in dambar area
Figure 10
PG-DSO-8
Data Sheet
26
TLE42994
Package Outlines
0.35 x 45
1.75 MAX.
0.175 0.07 (1.47)
C
4 -0.2
1.27 0.41+0.10 2) -0.06 14
B
0.1
0.2 M A B 14x
8 60.2
0.64 0.25
0.2 M C
1 7 1) 8.75 -0.2
A
Index Marking 1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Lead width can be 0.61 max. in dambar area GPS01230
Figure 11
PG-DSO-14
Data Sheet
27
Rev. 1.1, 2009-05-19
8MAX.
1)
0.19 +0.06
TLE42994
Package Outlines
0.35 x 45
Stand Off (1.45)
1.7 MAX.
3.9 0.11)
0.1 C D
0 ... 0.1
0.19 +0.06
0.08 C 6 0.2
0.65 0.25 0.05 2)
C
0.64 0.25
D 0.2
8 MAX.
M
0.15 M C A-B D 14x
D 8x
A
14 8
Bottom View 3 0.2
1 7
1
7
B 0.1 C A-B 2x
Exposed Diepad
14
8
4.9 0.11)
Index Marking
1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Does not include dambar protrusion
PG-SSOP-14-1,-2,-3-PO V02
Figure 12
PG-SSOP-14
Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
For further information on alternative packages, please visit our website: http://www.infineon.com/packages. Data Sheet 28
2.65 0.2
Dimensions in mm Rev. 1.1, 2009-05-19
TLE42994
Revision History
7
Revision 1.1
Revision History
Date 2009-05-19 Changes Updated version Data Sheet: Typing error corrected in Chapter 5.2 in conditions for graph "Output Capacitor Series Resistor ESR(CQ) versus Output Current IQ" on Page 15: "10F" corrected to "22F", no change done in specification of electrical parameters
1.0
2008-12-04
initial version Data Sheet
Data Sheet
29
Rev. 1.1, 2009-05-19
Edition 2009-05-19 Published by Infineon Technologies AG 81726 Munich, Germany (c) 2009 Infineon Technologies AG All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered.

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