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5-V Voltage Regulator
TLE 4287 G
Features * * * * * * * * * * * * Output voltage tolerance 2% Very low standby current consumption Input voltage up to 42 V Reset function down to 1 V output voltage ESD protection up to 2000 V Adjustable reset time On/Off logic Overtemperature protection Reverse polarity protection Short-circuit proof Very wide temperature range Very small output capacitor Ordering Code Q67006-A9286
P-DSO-14-8
Type TLE 4287 G
New type
Package P-DSO-14-8 (SMD)
A comparator in the reset-generator block compares a reference voltage that is independent of the input voltage to the scaled-down output voltage. In the case of an output voltage VQ < 4.5 V the reset delay capacitor is discharged and a reset signal is generated by setting the reset output LOW. The reset delay time can be set by choosing the external capacitor over a wide range. When the output voltage rises above VQ 4.5 V the reset delay capacitor is charged again. As soon as the delay capacitor voltage reaches the upper switching threshold the reset output pin is set HIGH again.
Data Sheet Version 1.3 1 2001-09-12
Functional Description The TLE 4287 G is a monolithic integrated 5 V voltage regulator in P-DSO-14-8 package. It supplies an output current IQ > 250 mA. The IC is short circuit proof and incorporates temperature protection which turns off the device at overtemperature. The input voltage VI is regulated in the range of 7.5 V < VI < 40 V to VQ,nom = 5 V. Therefore a reference voltage, which is kept highly accurate by resistance adjustment, is compared via a control amplifier to a voltage that is proportional to the output voltage. The control amplifier drives the base of the series transistor by a buffer.
TLE 4287 G
The device has two logic inputs, EN and H. It is turned ON by a voltage > 4 V at EN, for example by the ignition and remains active in case H is set LOW, even if the voltage at EN goes LOW. This makes it possible to implement a self-holding circuit without external components. When the device is turned OFF, the output voltage drops to 0 V and current consumption tends towards 0 A. (Please see following truth table). Design Notes for External Components The input capacitor CI is necessary for compensation line influences. The resonant circuit consisting of lead inductance and input capacitance can be damped by a resistor of approx. 1 in series with CI. The output capacitor is necessary for the stability of the regulating circuit. Stability is guaranteed for CQ 100 nF within the operating temperature range. State Table for Turn-On/Turn-Off Logic Nr. 1 2 3 4 5 6 Enable EN Hold H L H H X L L X X L L L H
VQ
0V 5V 5V 5V 5V 0V
Remarks Initial state Regulator switched on via pin 6, by ignition for example Pin 9 clamped active to GND by controller while pin 6 is still HIGH Previous state remains, even ignition is shut off: self-holding state Ignition shut off while regulator is in selfholding state Regulator shut down by releasing of pin 9 while pin 6 remains LOW, final state. No active clamping required by external selfholding circuit (C) to keep regulator shut off
Data Sheet Version 1.3
2
2001-09-12
TLE 4287 G
I
N.C. GND GND GND EN RO
1 2 3 4 5 6 7
14 13 12 11 10 9 8
AEP02240
GND Q GND GND GND H D
Figure 1
Pin Configuration (top view)
Pin Definitions and Functions Pin No. 1 2 3, 4, 5, 10, 11, 12, 14 6 Symbol I N.C. GND EN Function Input; block to ground directly at the IC by a ceramic capacitor Not connected Ground Enable; active high, device is turned ON by HIGH signal at this pin, internally connected to GND via pull-down resistor of 100 k Reset Output; open-collector output, internally connected to Q via a pull-up resistor of 30 k Reset Delay; connect to GND via external delay capacitor for setting delay time Hold and release; active low, see truth table above for function, connected to Q via a pull-up resistor of 50 k Output; block to GND with a capacitor CQ 100 nF
7 8 9 13
RO D H Q
Data Sheet Version 1.3
3
2001-09-12
TLE 4287 G
Temperature Sensor
Saturation Control and Protection Circuit 13 5V Output
Input
1
Control Amplifier Adjustment Bandgap Reference
Buffer
Reset Generator
7 Reset Output 8 Reset Delay
Turn-ON / Turn-OFF Logic 6 Enable 9 Hold 3,4,5,10,11,12,14 GND
AEB02241
Figure 2
Block Diagram
Data Sheet Version 1.3
4
2001-09-12
TLE 4287 G
Absolute Maximum Ratings Parameter Symbol Limit Values min. Input I Voltage Current Output Q Voltage Current Reset Output RO Voltage Current Reset Delay D Voltage Current Enable EN Voltage Current Hold H Voltage Current max. Unit Remarks
VI II
- 0.5 -
42 -
V mA
- internally limited
VQ IQ
- 0.3 -
7 -
V -
- internally limited
VR IR
- 0.3 -
7 -
V -
- internally limited
VD ID
- 0.3 -
42 -
V -
- -
VEN IEN
- 42 -5
42 5
V mA
-
t 400 ms
VH IH
-2 -
7 -
V -
- internally limited
Data Sheet Version 1.3
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2001-09-12
TLE 4287 G
Absolute Maximum Ratings (cont'd) Parameter Symbol Limit Values min. Ground GND Current Temperatures Junction temperature Junction temperature Storage temperature max. Unit Remarks
IGND
- 0.5
-
A
-
Tj Tj Tstg
- 40 - 40 - 50
165 175 150
C C C
- max. 15 min -
Note: Maximum ratings are absolute ratings; exceeding any one of these values may cause irreversible damage to the integrated circuit. Operating Range Parameter Input voltage Junction temperature Thermal Resistances Junction pin Junction ambient
1)
Symbol
Limit Values min. max. 42 165 7.5 - 40
Unit V
Remarks - -
VI Tj
C
Rthj-pin Rthj-a
- -
32 112
K/W K/W
measured to pin 4
1)
Package mounted on PCB 80 x 80 x 1.5 mm3; 35 Cu; 5 Sn; Footprint only; zero airflow.
Note: ESD-Protection according to MIL Std. 883: 2 kV.
Data Sheet Version 1.3
6
2001-09-12
TLE 4287 G
Electrical Characteristics 7.5 V VI 40 V; - 40 C < Tj < 150 C; VEN > 4 V (unless otherwise specified) Parameter Output voltage Output voltage Output current limitation Drop voltage Current consumption Iq = II - IQ Current consumption Iq = II - IQ Current consumption Iq = II - IQ Load regulation Line regulation Power-Supply-RippleRejection Temperature output voltage drift Output capacitance Reset Generator Reset switching threshold VQ,rt 4.50 - 4.5 20 10 2.2 0.1
7
Symbol
Limit Values min. typ. 5.0 5.0 - 1.8 - 1.0 2.3 - - 55 0.5 - max. 5.10 5.10 - 2.5 50 10 5 + 25 + 25 - - - 4.90 4.90 250 - - - - - 25 - 25 -
Unit V V mA V
Test Condition 5 mA < IQ < 200 mA 7.5 V < VI < 22 V 5 mA < IQ < 80 mA 7.5 V < VI < 36 V
VQ VQ IQ VDR Iq Iq Iq VQ.lo VQ,li
PSRR
VI < 22 V IQ = 200 mA1)
Regulator OFF: VEN = 0 V, H = open
A A
mA mV V dB mV/K nF
Tj = 25 C, VEN = 0 V, H = open 5 mA < IQ < 200 mA, VI = 16 V 5 mA < IQ < 200 mA
7.5 V < VI < 22 V
IQ = 20 mA fr = 100 Hz; Vr = 0.5 VSS
- -
VQ /T - CQ
100
4.65 0.1 - 30 15 3 0.43
4.80 0.4 5.05 40 38 3.6 0.8
V V V k
-
VRL Reset output high voltage VRH Reset pull up resistor RR
Reset output low voltage Reset charging current Upper timing threshold Lower timing threshold
Data Sheet Version 1.3
Rext = 4.7 k to VQ2) Rext =
internally connected to Q
ID,c VDU VDL
A
V V
VD = 1.5 V
- -
2001-09-12
TLE 4287 G
Electrical Characteristics (cont'd) 7.5 V VI 40 V; - 40 C < Tj < 150 C; VEN > 4 V (unless otherwise specified) Parameter Delay saturation voltage Reset delay time Reset reaction time Enable EN, Hold H Symbol Limit Values min. typ. 50 20 2.0 max. - 30 4.0 mV ms - 7.5 0.5 Unit Test Condition
VD,sat trd trr
s
VQ < VQ,rt CD = 100 nF CD = 100 nF
VEN Enable turn-OFF voltage VEN Enable pull-down resistor REN
Enable turn-ON voltage Enable hysteresis Enable input current Hold keep on voltage Hold release voltage Hold pull-up resistor
1) 2)
2.3 2.0 50 0.2 - 30 60 20
3.0 2.5 100 0.4 35 35 70 50
4.0 3.5 200 0.8 100 50 80 100
V V k V
IC turned-ON IC turned-OFF internally connected to GND -
VEN
IEN VH VH RH
A
% % k
VEN = 4 V
referred to VQ;
VQ > 4.5 V
referred to VQ;
VQ > 4.5 V
internally connected to Q
Measured when the output voltage VQ has dropped 100 mV from the nominal value. The reset output is LOW between VQ = 1 V and Vrt.
Data Sheet Version 1.3
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2001-09-12
TLE 4287 G
Input Enable e.g. from Terminal 15 Reset to C
1I
Q 13
CI
100 nF 6 7 EN RO TLE 4287 D 8
5V Output
CQ
100 nF
GND 3, 4, 5, 10, 11, 12, 14
H 9
CD
100 nF
AES02243
Hold from C
Figure 3
Application Circuit
Data Sheet Version 1.3
9
2001-09-12
TLE 4287 G
VI
VEN VEN, ON VEN, OFF VQ VQ, rt
< trr
VD VDU VDL VRO
trr
VD, sat
trd
VRL
Power-ON Thermal Reset Shutdown Voltage Drop Undervoltage Secondary Load at Input at Output Spike Bounce Shutdown
AES03087
Figure 4
Time Response
Data Sheet Version 1.3
10
2001-09-12
TLE 4287 G
VI
VEN VEN, ON VEN, OFF VH VH, rel VH, hold VQ VQ, nom VQ, rt VD VDU VDL VRO
8) 2) 4) 1) 5)
< 1 s
< 10 s
6) 7)
10)
VD, sat
trd
3)
trr
9)
VRL
1) Enable active 2) Hold inactive, pulled up by VQ 3) Power-ON Reset 4) Hold active, clamped to GND by external MC 5) Enable inactive, clamped by int, pull-down resistor 6) Pulse width smaller than 1 s 7) Hold inactive, released by MC 8) Voltage Controller shutdown 9) Output-low reset 10) No switch on via VE6 possible after E6 was released to VE6 > VE6, rel for more than 4 s
AES03088
Figure 5
Enable and Hold Behavior
Data Sheet Version 1.3
11
2001-09-12
TLE 4287 G
Package Outlines P-DSO-14-8 (Plastic Dual Small Outline)
Sorts of Packing Package outlines for tubes, trays etc. are contained in our Data Book "Package Information". SMD = Surface Mounted Device Data Sheet Version 1.3 12
Dimensions in mm 2001-09-12
GPS05093
TLE 4287 G
Edition 2001-09-12 Published by Infineon Technologies AG, St.-Martin-Strasse 53, D-81541 Munchen
(c) Infineon Technologies AG 2001.
All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as warranted characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of noninfringement, regarding circuits, descriptions and charts stated herein. Infineon Technologies is an approved CECC manufacturer. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide (see address list). Warnings Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems 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.
Data Sheet Version 1.3
13
2001-09-12

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