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5-V Low-Drop Voltage Regulator
TLE 4263
Features Output voltage tolerance 2% 200 mA output current capability Low-drop voltage Very low standby current consumption Overtemperature protection Reverse polarity protection Short-circuit proof Adjustable reset threshold Watchdog Wide temperature range Suitable for use in automotive electronics Ordering Code
Type SMD type
TLE 4263 GM Q67006-A9357-A201K5 P-DSO-14-8
Functional Description TLE 4263 is a 5-V low-drop voltage regulator in a P-DSO-14-8 SMD package. The maximum input voltage is 45 V. The maximum output current is more than 200 mA. The IC is short-circuit proof and incorporates temperature protection which turns off the IC at overtemperature. The IC regulates an input voltage VI in the range of 6 V < VI < 45 V to VQ,nom = 5.0 V. A reset signal is generated for an output voltage of VQ,rt < 4.5 V. This voltage threshold can be decreased to 3.5 V by external connection of a voltage divider. The reset delay can be set externally by a capacitor. The integrated watchdog logic supervises the connected microcontroller. The IC can be switched off via the inhibit input, which causes the current consumption to drop from 900 A to typical 0 A.
Data Sheet Rev. 2.4
1
(R)

P-DSO-14-8
Package
2001-01-17
TLE 4263
Choosing External Components The input capacitor CI is necessary for compensation of line influences. Using a resistor of approx. 1 in series with CI, the oscillating circuit consisting of input inductivity and input capacitance can be damped. The output capacitor is necessary for the stability of the regulating circuit. Stability is guaranteed at values 22 F and an ESR of 3 within the operating temperature range. For small tolerances of the reset delay the spread of the capacitance of the delay capacitor and its temperature coefficient should be noted.
TLE 4263 GM
RO N.C. GND GND GND D RADJ 1 2 3 4 5 6 7 14 13 12 11 10 9 8
AEP03067
INH GND GND GND Q W
Figure 1
Pin Configuration (top view)
Data Sheet Rev. 2.4
2
2001-01-17
(R)
TLE 4263
Pin Definitions and Functions Pin Symbol (P-DSO-14-4) 1 2 3 - 5, 10 - 12 6 7 RO N.C. GND D RADJ Function Reset output; open-collector output connected to the output via a resistor of 30 k. Not connected Ground Reset delay; connected to ground with a capacitor. Reset threshold; to adjust the switching threshold connect a voltage divider (output to GND) to the pin. If this input is connected to GND, reset is triggered at an output voltage of 4.5 V. Watchdog; rising edge triggered input for monitoring a microcontroller. 5-V output voltage; block to ground with a capacitor, C 22 F, ESR 3 at Input voltage; block to ground directly at the IC with a ceramic capacitor. Inhibit; TTL-compatible, low-active input.
8 9 13 14
W Q I INH
Data Sheet Rev. 2.4
3
(R)
2001-01-17
TLE 4263
Circuit Description The control amplifier compares a reference voltage, which is kept highly accurate by resistance adjustment, 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 over-saturation of the power element. If the externally scaled down output voltage at the reset threshold input drops below 1.35 V, the external reset delay capacitor is discharged by the reset generator. When the voltage of the capacitor reaches the lower threshold VDRL, a reset signal occurs at the reset output and is held until the upper threshold VDU is exceeded. If the reset threshold input is connected to GND, reset is triggered at an output voltage of typ. 4.65 V. A connected microcontroller will be monitored through the watchdog logic. In case of missing pulses at pin W, the reset output is set to low. The pulse sequence time can be set in a wide range with the reset delay capacitor. The IC can be switched at the TTL-compatible, low-active inhibit input. The IC also incorporates a number of internal circuits for protection against: Overload Overtemperature Reverse polarity
Figure 2
Data Sheet Rev. 2.4

W Temperature Sensor Saturation Control and Protection Circuit Watchdog
Input
Q
Output
Control Amplifier Bandgap Reference
Buffer Reset Generator
D Reset Delay RO Reset Output RADJ Reset Threshold
Adjustment INH Inhibit GND GND
AEB03068
Block Diagram
4
2001-01-17
TLE 4263
Absolute Maximum Ratings Parameter Symbol Limit Values min. Input I Input voltage Input current Reset Output RO Voltage Current Reset Threshold RADJ Voltage Reset Delay D Voltage Current Output Q Voltage Current Inhibit INH Voltage Watchdog W Voltage Ground GND Current max. Unit Remarks
VI II
- 42 -
45 -
V -
- internally limited
VR IR
- 0.3 -
42 -
V -
- internally limited
VRADJ
- 0.3
6
V
-
VD ID
- 0.3 -
42 -
V -
- internally limited
VQ IQ
- 0.3 -
7 -
V -
- internally limited
VINH
- 42
45
V
-
VW
- 0.3
6
V
-
IGND
- 0.5
-
A
-
Data Sheet Rev. 2.4
5
2001-01-17
TLE 4263
Absolute Maximum Ratings (cont'd) Parameter Symbol Limit Values min. Temperature max. Unit Remarks
Operating Range Input voltage Junction temperature Thermal resistance junction-ambient junction-pin
1) 2)
VI Tj Rthj-a Rthj-p
80
- - 40 - -
45 150 112 32
Package mounted on PCB 80 Measured to pin 4.
1.5mm3; 35 Cu; 5 Sn; Footprint only; zero airflow.
Data Sheet Rev. 2.4
6

Junction temperature Storage temperature
Tj Tstg
- - 50
150 150
C C
- -
V C
- -
1) 2)
K/W K/W
2001-01-17
TLE 4263
Characteristics VI = 13.5 V; - 40 C < Tj < 125 C; VINH > 3.5 V; (unless specified otherwise) Parameter Symbol
Normal Operation
Output current
IQ
200 - - - - - - - -
250 0 900 10 15 0.35 - 3 54
- 50
mA A
1)
Drop voltage Load regulation Line regulation Power Supply Ripple Rejection Reset Generator Switching threshold
Vdr VQ,lo VQ.li
0.50 25 25 -
PSRR
dB
VQ,rt
4.5 1.26 -
4.65 1.35 0.10
4.8 1.44 0.40
Reset adjust threshold VRADJ,th Reset low voltage
VRO,l
Note: The reset output is low within the range VQ = 1 V to VQ,rt
1)
Drop voltage = Vi - VQ (measured when the output voltage has dropped 100 mV from the nominal value obtained at 6 V input)
Data Sheet Rev. 2.4
7
Iq Iq Iq
1300 A 18 mA 23 mA V mV mV
Current consumption; Iq Iq = II - IQ
VINH = 0 IQ = 0 mA IQ = 150 mA IQ = 150 mA; VI = 4.5 V IQ = 150 mA1) IQ = 5 mA to 150 mA VI = 6 V to 28 V; IQ = 150 mA fr = 100 Hz; Vr = 0.5 VPP
V V V
VRADJ = 0 V VQ > 3.5 V IRO = 1 mA
(R)
(R)
Output voltage
VQ
4.90
5.00
5.10
V
6 V VI 32 V; IQ = 100 mA; Tj = 100 C
(R)
(R)
(R)
Output voltage
VQ
(R)

Limit Values min. typ. max.
Unit Test Condition
4.90
5.00
5.10
V
5 mA IQ 150 mA; 6 V VI 28 V
2001-01-17
TLE 4263
Characteristics (cont'd) VI = 13.5 V; - 40 C < Tj < 125 C; VINH > 3.5 V; (unless specified otherwise) Parameter Symbol
Saturation voltage
VD,sat
Upper timing threshold VDU Lower reset timing threshold Charge current Reset delay time Reset reaction time Watchdog
VDRL ID,ch trd trr
1.3 0.5
2.8 1.2
4.1 4
Upper timing threshold VDU Lower timing threshold VDWL Watchdog trigger time TWI,tr Inhibit Switching voltage Turn-OFF voltage Input current
1.45 0.20 16
1.70 0.35 22.5
2.05 0.55 27
VINH,ON VINH,OFF IINH
3.6 - 5
- - 10
- 0.8 25
Note: The reset output is low within the range VQ = 1 V to VQ,rt
Data Sheet Rev. 2.4
8
Discharge current
ID,wd
4.40
6.25
9.10

Limit Values min. - 1.45 0.20 40 typ. 50 1.70 0.35 60 max. 100 2.05 0.55 85
Unit Test Condition
mV V V A
VQ < VR,th
- - -
ms s
CD = 100 nF CD = 100 nF
A
VD = 1.0 V
- -
V V ms
CD = 100 nF
V V A
IC turned on IC turned off
VINH = 5 V
2001-01-17
TLE 4263
Input 470 nF 6 V...45 V KL 15 Reset To MC
INH RO
Q D 100 nF RADJ 22 F
Output 100 k
TLE 4263G
GND
W
56 k
Watchdog from MC
AES03069
Figure 3
Application Circuit
1000 F 470 nF
Q
Q
22 F
TLE 4263G
RO D D, ch CD 100 nF GND GND W VW RADJ VRADJ
5.6 k VQ VRO
E
V + Vr
INH
RD
VE
VC
PSRR = 20 log
Vr VQ, r
AES03070
Figure 4
Test Circuit
Data Sheet Rev. 2.4
9
2001-01-17
TLE 4263
Reset Timing The power-on reset delay time is defined by the charging time of an external capacitor CD which can be calculated as follows:
Definitions:
CD = delay capacitor trd = reset delay time ID,ch = charge current, typical 60 A V = VDU, typical 1.70 V VDU = upper delay switching threshold at CD for reset delay time
VI
< trr
VQ VQ, rt VD VDU VDRL
dV ID, ch = dt CD
trd
VRO
trr
Power-ON Reset
Overtemperature
Voltage Drop at Input
Undervoltage
Figure 5
Time Response, Watchdog with High-Frequency Clock
Reset Switching Threshold The present default value is typ. 4.65 V. When using the TLE 4263 the reset threshold can be set to 3.5 V < VQ,rt < 4.6 V by connecting an external voltage divider to pin RADJ. The calculation can be easily done since the reset adjust input current can be neglected. If this feature is not needed, the pin has to be connected to GND.
Data Sheet Rev. 2.4
VQ, rt = (1+R1/R2)
VRADJ,th
10
CD = (trd
ID,ch)/V
t
t
t
t
Secondary Load Bounce Spike
AET03066
2001-01-17
TLE 4263
Definitions:
VQ,rt = reset threshold VRADJ, th = comparator reference voltage, typical 1.35 V
Watchdog Timing The frequency of the watchdog pulses has to be higher than the minimum pulse sequence which is set by the external reset delay capacitor CD. Calculation can be done according to the formulas given in Figure 6.
VW
V
t
VQ
T WD, p
t
VD VDU VDWL VRO
T WI, tr
t
t WD, L
t
T WI, tr =
(VDU - VDWL )
D, wd
C D ; T WD, p =
(VDU -VDWL ) ( D, wc + D, wd )
D, wc x D, wd
C D ; t WD, L =
(VDU - VDWL )
t CD
AED03099
D, wc
Figure 6
Timing of the Watchdog FunctionReset
Data Sheet Rev. 2.4
11
2001-01-17
TLE 4263
Reset Switching Threshold versus Output Voltage
1.6 V RADJ V 1.4 1.2 1.0 V = 13.5 V 0.8 0.6 0.4 0.2 0
AED01098
Timing Threshold Voltage VDU and VDRL versus Temperature
3.2 V V 2.8 2.4 2.0 1.6 1.2 0.8 0.4
AED03062
VI = 13.5 V
VDU
VDRL
0
1
2
3
4V5 VQ
0 -40
0
40
80
120 C 160
Tj
Reset Switching Threshold versus Temperature
1.6 VRADJ V 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 -40
AED01088
Current Consumption of Inhibit versus Temperature
16 A IINH 14 12 10 8 6 4 2
AED03063
VINH = 5 V
0
40
80
120 C 160
0 -40
0
40
80
120 C 160
Tj
Tj
Data Sheet Rev. 2.4
12
2001-01-17
TLE 4263
Drop Voltage versus OutputCurrent
800 mV 700 600 500 400 300 200 100 0 mA
AED03060
Current Consumption versus Output Current
32 Iq mA 28 24 20
AED03061
Vdr
T j = 125 C
25 C
VI = 13.5 V
16 12 8 4
0 50 100 150 200 300
0
0
50
100 150
200
mA
300
IQ
IQ
Current Consumption versus Input Voltage
30
AED01096
Output Voltage versus Input Voltage
12 VQ V 10
AED01097
q
mA 25
20
R L = 25
8
15
6
R L = 25
10
4
5
2
0
0
10
20
30
40 V 50 V
0
0
2
4
6
8 V 10 V
Data Sheet Rev. 2.4
13
2001-01-17
TLE 4263
Charge Current and Discharge Current versus Temperature
80 A 70 60 50 40 30
AED03064
Output Voltage versus Temperature
5.2 V 5.1
AED01090
VQ
D, ch
V = 13.5 V V D = 1.5 V
VI = 13.5 V
5.0
4.9
4.8
20 10 0 -40
D, dis
4.7
0
40
80
120 C 160 Tj
4.6 -40
0
40
80
120 C 160
Tj
Pulse Time versus Temperature
40 ms TWI,tr 35 30 25 20 15
AED03065
Output Current versus Input Voltage
300
AED01091
Q
mA 250
T j = 25 C
V = 13.5 V C D = 100 nF
200
150
100
10 5 0 -40
50
0
40
80
120 C 160 Tj
0
0
10
20
30
40 V 50 V
Data Sheet Rev. 2.4
14
2001-01-17
TLE 4263
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 Rev. 2.4 15
Dimensions in mm 2001-01-17
GPS09222
TLE 4263
Data Sheet Rev. 2.4
16
2001-01-17
TLE 4263
Data Sheet Rev. 2.4
17
2001-01-17
TLE 4263
Edition 2001-01-17 Published by Infineon Technologies AG, St.-Martin-Strasse 53, D-81541 Munchen
(c) Infineon Technologies AG1999.
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 Rev. 2.4
18
2001-01-17
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