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5-V Low Drop Fixed Voltage Regulator
TLE 4271-2
Features * * * * * * * * * * * * Output voltage tolerance 2% Low-drop voltage Integrated overtemperature protection Reverse polarity protection Input voltage up to 42 V Overvoltage protection up to 65 V ( 400 ms) Short-circuit proof Suitable for use in automotive electronics Wide temperature range Adjustable reset and watchdog time Green Product (RoHS compliant) AEC Qualified
P-TO220-7-11
^
Functional Description
P-TO220-7-12
The TLE 4271-2 is functional and electrical identical to TLE 4271. The device is a 5-V low drop fixed voltage regulator. The maximum input voltage is 42 V (65 V, 400 ms). Up to an input voltage of 26 V and for an output current up to 550 mA it regulates the output voltage within a 2% accuracy. The short circuit protection limits the output current of more than 650 mA. The IC can be switched off via the inhibit input. An integrated watchdog monitors the connected controller. The device incorporates overvoltage protection and temperature protection that disables the circuit at overtemperature.
P-TO263-7-1
Type TLE 4271-2 TLE 4271-2 S TLE 4271-2 G
Data Sheet 1
Package PG-TO220-7-11 PG-TO220-7-12 PG-TO263-7-1
Rev. 2.7, 2007-06-25
TLE 4271-2
PG-TO220-7-11
PG-TO220-7-12
PG-TO263-7-1
1
7
1 7
1 7
RO D Q INH GND WI
AEP01938
RO D Q INH GND WI
AEP01939
RO D Q INH GND WI
AEP02017
Figure 1 Table 1 Pin 1 2 3 4 5 6 7 I INH RO GND D WI Q
Pin Configuration (top view) Pin Definitions and Functions Function Input; block to ground directly on the IC with ceramic capacitor. Inhibit Reset Output; the open collector output is connected to the 5 V output via an integrated resistor of 30 k. Ground Reset Delay; connect a capacitor to ground for delay time adjustment. Watchdog Input 5-V Output; block to ground with 22 F capacitor, ESR < 3 .
Symbol
Data Sheet
2
Rev. 2.7, 2007-06-25
TLE 4271-2
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 a series transistor via a buffer. Saturation control as a function of the load current prevents any over-saturation of the power element. The reset output RO is in high-state if the voltage on the delay capacitor CD is greater or equal VUD. The delay capacitor CD is charged with the current ID for output voltages greater than the reset threshold VRT. If the output voltage gets lower than VRT (`reset condition') a fast discharge of the delay capacitor CD sets in and as soon as VD gets lower than VLD the reset output RO is set to low-level. The time for the delay capacitor charge from VUD to VLD is the reset delay time tD. When the voltage on the delay capacitor has reached VUD and reset was set to high, the watchdog circuit is enabled and discharges CD with the constant current IDWD. If there is no rising edge observed at the watchdog input, CD will be discharge down to VLDW, then reset output RO will be set to low and CD will be charged again with the current IDWC until VD reaches VUD and reset will be set high again. If the watchdog pulse (rising edge at watchdog input WI) occurs during the discharge period CD is charged again and the reset output stays high. After VD has reached VUD, the periodical behavior starts again. Internal protection circuits protect the IC against: * * * * Overload Overvoltage Overtemperature Reverse polarity
Data Sheet
3
Rev. 2.7, 2007-06-25
TLE 4271-2
Temperature Sensor
Saturation Control and Protection Circuit 7
1 Control Amplifier Adjustment Bandgap Reference + Reset Generator
Q
Buffer
3
RO
5
D
Watchdog 2 INH 4 GND
6
WI
AEB01940
Figure 2
Block Diagram
Data Sheet
4
Rev. 2.7, 2007-06-25
TLE 4271-2
Table 2
Absolute Maximum Ratings
Tj = -40 to 150 C
Parameter Input Voltage Voltage Current Inhibit Voltage Voltage Current Reset Output Voltage Current Reset Delay Voltage Current Watchdog Voltage Current Output Voltage Current Ground Current Temperatures Junction temperature Storage temperature Symbol Min. Limit Values Max. 42 65 - 42 65 - 42 - 7 5 7 5 16 - - 150 150 V V mA V V mA V mA V mA V mA V mA A C C - Unit Notes
VI VI II VINH VINH IINH VRO IRO VD ID VW IW VQ IQ IGND Tj Tstg
-42 - - -42 - - -0.3 - -0.3 -5 -0.3 -5 -1.0 -5 -0.5 - -50
t 400 ms
internally limited -
t 400 ms internally limited
- internally limited - - - - - internally limited - - -
Data Sheet
5
Rev. 2.7, 2007-06-25
TLE 4271-2
Table 3 Parameter Input voltage
Operating Range Symbol Limit Values Min. Max. 40 150 65 70 3 2 V C K/W K/W K/W K/W - - - PG-TO263-7-1 - 6 -40 - - - - Unit Notes
Junction temperature Thermal Resistance Junction ambient Junction case
VI Tj Rthja Rthjc Zthjc
t < 1 ms
Data Sheet
6
Rev. 2.7, 2007-06-25
TLE 4271-2
Table 4
Characteristics
VI = 13.5 V; -40 C Tj 125 C; VINH > VU,INH (unless otherwise specified)
Parameter Output voltage Output voltage Output current limiting Current consumption Iq = II Current consumption Iq = II Current consumption Iq = II - IQ Current consumption Iq = II - IQ Current consumption Iq = II - IQ Drop voltage Load regulation Supply voltage regulation Symbol Min. Limit Values Typ. 5.00 5.00 800 - Max. 5.10 5.10 - 6 V V mA A 5 mA IQ 550 mA; 6 V VI 26 V 26 V VI 36 V; IQ 300 mA 4.90 4.90 650 - Unit Test Condition
VQ VQ IQmax Iq
VQ = 0 V VINH = 0 V; IQ = 0 mA
Iq
-
800
-
A
VINH = 5 V; IQ = 0 mA
Iq
-
1
1.5
mA
IQ = 5 mA
Iq
-
55
75
mA
IQ = 550 mA
Iq
-
70
90
mA
IQ = 550 mA; VI = 5 V
Vdr
VQ VQ
- - - -
350 25 12 54
700 50 25 -
mV mV mV dB
Power supply Ripple PSRR rejection
IQ = 550 mA1) IQ = 5 to 550 mA; VI = 6 V VI = 6 to 26 V IQ = 5 mA fr = 100 Hz; Vr = 0.5 Vpp
Data Sheet
7
Rev. 2.7, 2007-06-25
TLE 4271-2
Table 4
Characteristics (cont'd)
VI = 13.5 V; -40 C Tj 125 C; VINH > VU,INH (unless otherwise specified)
Parameter Reset Generator Switching threshold Reset high voltage Saturation voltage Saturation voltage Reset pull-up Lower reset timing threshold Charge current Upper timing threshold Delay time Reset reaction time Turn-off voltage Inhibit Turn-on voltage Turn-off voltage Inhibit current Watchdog Upper watchdog switching threshold Lower watchdog switching threshold Discharge current Charge current Watchdog period
Data Sheet
Symbol Min.
Limit Values Typ. 4.65 - 60 200 30 0.45 14 1.8 13 - 44 2.0 1.3 12 1.8 0.45 2.7 14 55
8
Unit Test Condition
Max. 4.8 - - 400 46 0.8 25 2.3 18 3 46 3.5 3.3 25 2.3 0.8 3.5 25 80 V V mV mV k V A V ms s V V V A V V A A ms - -
VRT VROH VRO,SAT VRO,SAT R VLD ID VUD tD tRR VI, ov VU,INH VL,INH IINH VUDW VLDW IDWD IDWC tWD,P
4.5 4.5 - - 18 0.2 8 1.4 8 - 40 1.0 0.8 8 1.4 0.2 1.5 8 40
Rintern = 30 k; 1.0 V VQ 4.5 V IR = 3 mA2); VQ = 4.4 V
internally connected to Q
VQ < VRT VD = 1.0 V
-
CD = 100 nF CD = 100 nF
-
Overvoltage Protection
VQ = high (> 4.5 V) VQ = low (< 0.8 V) VINH = 5 V
- -
VD = 1 V VD = 1 V CD = 100 nF
Rev. 2.7, 2007-06-25
TLE 4271-2
Table 4
Characteristics (cont'd)
VI = 13.5 V; -40 C Tj 125 C; VINH > VU,INH (unless otherwise specified)
Parameter Watchdog trigger time Watchdog pulse slew rate Symbol Min. Limit Values Typ. 45 - Max. 66 - ms 30 5 Unit Test Condition
tWI,tr VWI
CD = 100 nF
see diagram
V/s from 20% to 80% VQ
1) Drop voltage = VI - VQ (measured when the output voltage has dropped 100 mV from the nominal value obtained at 13.5 V input) 2) Test condition not applicable during delay time for power-on reset.
Data Sheet
9
Rev. 2.7, 2007-06-25
TLE 4271-2
1000 F 470 nF
1
7
Q
22 F
TLE 4271-2
2 V V INH VD 5 6 V WI 4
3 RO
VQ V RO
D
CD
GND
AES01941
Figure 3
Test Circuit
Input 470 nF Input e.g. KL 15 Reset to MC
1
7
5 V-Output
2
TLE 4271-2
5 4 6 100 nF 22 F
3
Watchdog Signal from MC
AES01942
Figure 4
Circuit
Data Sheet
10
Rev. 2.7, 2007-06-25
TLE 4271-2
Application Description The IC regulates an input voltage in the range of 6 V < VI < 40 V to VQnom = 5.0 V. Up to 26 V it produces a regulated output current of more than 550 mA. Above 26 V the saveoperating-area protection allows operation up to 36 V with a regulated output current of more than 300 mA. Overvoltage protection limits operation at 42 V. The overvoltage protection hysteresis restores operation if the input voltage has dropped below 36 V. The IC can be switched off via the inhibit input, which causes the quiescent current to drop below 10 A. A reset signal is generated for an output voltage of VQ < 4.5 V. The watchdog circuit monitors a connected controller. If there is no positive-going edge at the watchdog input within a fixed time, the reset output is set to low. The delay for power-on reset and the maximum permitted watchdog-pulse period can be set externally with a capacitor. Design Notes for External Components An input capacitor CI is necessary for compensation of 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. An output capacitor CQ is necessary for the stability of the regulating circuit. Stability is guaranteed at values of CQ 22 F and an ESR of < 3 . Reset Circuitry If the output voltage decreases below 4.5 V, an external capacitor CD on pin D will be discharged by the reset generator. If the voltage on this capacitor drops below VDRL, a reset signal is generated on pin RO, i.e. reset output is set low. If the output voltage rises above the reset threshold, CD will be charged with constant current. After the power-onreset time the voltage on the capacitor reaches VDU and the reset output will be set high again. The value of the power-on-reset time can be set within a wide range depending of the capacitance of CD. 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:
tD = CD x V/ID
Definitions: * * * * *
(1)
CD = delay capacitor tD = reset delay time ID = charge current, typical 14 A V = VUD, typical 1.8 V VUD = upper delay timing threshold at CD for reset delay time
11 Rev. 2.7, 2007-06-25
Data Sheet
TLE 4271-2
The reset reaction time trr is the time it takes the voltage regulator to set the reset out LOW after the output voltage has dropped below the reset threshold. It is typically 1 s for delay capacitor of 47 nF. For other values for Cd the reaction time can be estimated using the following equation:
tRR 20 s/F x Cd
(2)
V
VINH VU, INH VL, INH VQ VRT < t RR
t
t
VD VUD VLD VD, SAT VRO
dV D = dt C D
t RR
t
t tD
VRO, SAT t Power on Thermal Reset Shutdown Voltage Drop at Input Undervoltage at Output Secondary Load Spike Bounce Shutdown
AET01985
Figure 5
Time Response
Data Sheet
12
Rev. 2.7, 2007-06-25
TLE 4271-2
Watchdog Timing
V W
V
VQ
VD
t W, tr VUDW VLDW
t WD, P
VR
t WD, L
t W, tr =
(V UDW -VLDW )
DWD
C D ; t WD, P =
(V UDW -VLDW ) (V UDW -VLDW ) ( DWC + DWD ) C D ; t WD, L = CD DWC . DWD DWC
AES03078
Figure 6
Time Response, Watchdog Behavior
Data Sheet
13
Rev. 2.7, 2007-06-25
TLE 4271-2
Typical Performance Characteristics Output Voltage VQ versus Temperature Tj
5.2 V 5.1
AED01928
Output Voltage VQ versus Input Voltage VI (VINH = VI)
12 VQ V 10
AED01929
VQ
VI = 13.5 V
5.0
8
4.9
6
R L = 25
4.8
4
4.7
2
4.6 -40
0
40
80
120 C 160
0
0
2
4
6
Tj
8 V 10 V
Data Sheet
14
Rev. 2.7, 2007-06-25
TLE 4271-2
Output Current Limit IQ versus Temperature Tj
1200 mA
AED01930
Output Current IQ versus Input Voltage VI
1.2
AED01931
I Q max
IQ
A 1.0
1000
800
0.8
600
0.6
T j = 125 C
25 C
400
0.4
200
0.2
0 -40
0
40
80
120 C 160
0
0
10
20
30
40 V 50
Tj
VI
Current Consumption Iq versus Output Current IQ
q
6 mA 5
AED03076
Current Consumption Iq versus Output Current IQ
q
80 mA 70 60
AED03077
4
50 40
3 V = 13.5 V 2
30 V = 13.5 V 20
1
10 0
0
0
20
40
60
80
mA 120
0
100
200
300
400
mA 600
Q
Q
Data Sheet
15
Rev. 2.7, 2007-06-25
TLE 4271-2
Current Consumption Iq versus Input Voltage VI
120
AED01934
Drop Voltage Vdr versus Output Current IQ
800 mV V Dr 700 600
AED02755
Iq mA
100
80
500
60
R L = 10
T j = 125 C
400 300
40
20
R L = 20 50
200 100
T j = 25 C
0
0
10
20
30
40 V 50
0
0
200
400
600
VI
mA Q
1000
Inhibit Current IINH versus Inhibit Voltage VINH
12
AED01944
Output Voltage VQ versus Inhibit Voltage VINH
6
AED01945
A INH 10
INH, high
VQ
V 5
INH, on
8
4
V = 13.5 V T j = 25 C
6
V = 13.5 V T j = 25 C
3
4
2
2
INH, off
0 1 2 3 4 5V 6 V INH
1
0
0
0
1
2
3
4
5V 6 V INH
Data Sheet
16
Rev. 2.7, 2007-06-25
TLE 4271-2
Inhibit Current Consumptions IINH versus Temperature Tj
14
AED01946
Inhibit Voltages VINH versus Temperature Tj
6
AED01947
INH
A 12
V INH
V 5
INH, high
10
4
8
INH, on
6 4 2
3
V INH, on
2
1
INH, off
0 -40 0 40 80 120 Tj 160
V INH, off
0 -40 0 40 80 120 C 160 Tj
Switching Voltage VUD and VLDW versus Temperature Tj
2.4 V
AED01948
V
2.0
V = 13.5 V
1.6
V UD , V UDW
1.2
0.8
0.4
V LDW
0 -40 0 40 80 120 C 160 Tj
Data Sheet
17
Rev. 2.7, 2007-06-25
TLE 4271-2
Charge Current ID, IDWC and Discharge Current IDWD versus Temperature Tj
16 A I 14 12 10 8 6 4
AED01949
Watchdog Pulse Time Tw versus Temperature Tj
80 ms T W 70 60 50
AED01950
I D, I DWC
VI = 13.5 V VD = 1 V
40 30 20
V = 13.5 V C D = 100 nF
I DWD
2 0 -40
10
0 40 80 120 C 160
0 -40
0
40
80
Tj
120 C 160 Tj
Data Sheet
18
Rev. 2.7, 2007-06-25
TLE 4271-2
Package Outlines
10 0.2 9.9 0.2 9.8 0.15 8.5
1)
A 4.4 1.27 0.1
15.65 0.3
13.4
1)
2.8 0.2 3.7 -0.15
17 0.3
8.6 0.3
10.2 0.3
C
3.70.3
0.5 0.1 3.9 0.4
0...0.15 6x 1.27
7x 0.6 0.1 0.25
M
2.4 8.4 0.4
AC
1)
Typical All metal surfaces tin plated, except area of cut.
GPT09083
Figure 7
PG-TO220-7-11 (Plastic Transistor Single Outline)
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).
You can find all of our packages, sorts of packing and others in our Infineon Internet Page "Products": http://www.infineon.com/products. SMD = Surface Mounted Device Data Sheet 19 Dimensions in mm Rev. 2.7, 2007-06-25
1.6 0.3
0.05
9.25 0.2
TLE 4271-2
10 0.2 9.8 0.15 8.5 1) 3.7 -0.15
A B 4.4 1.27 0.1
170.3 15.65 0.3
1)
2.8 0.2
13.4
0.05
110.5
C 0...0.15 1.27
13 0.5
7x 0.6 0.1 0.25
M
0.5 0.1 2.4 ABC
1)
Typical All metal surfaces tin plated, except area of cut.
GPT09084
Figure 8
PG-TO220-7-12 (Plastic Transistor Single Outline)
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).
You can find all of our packages, sorts of packing and others in our Infineon Internet Page "Products": http://www.infineon.com/products. SMD = Surface Mounted Device Data Sheet 20 Dimensions in mm Rev. 2.7, 2007-06-25
9.25 0.2
TLE 4271-2
4.4 10 0.2 0...0.3
10.3
1.27 0.1 A B 0.05 2.4 0.1
4.7 0.5 2.7 0.3 7.551)
8.5 1)
(15)
9.25 0.2
0...0.15 7 x 0.6 0.1 6 x 1.27 0.25
M
0.5 0.1
AB
8 MAX.
0.1 B
1) Typical Metal surface min. X = 7.25, Y = 6.9 All metal surfaces tin plated, except area of cut.
GPT09114
Figure 9
PG-TO263-7-1 (Plastic Transistor Single Outline)
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).
You can find all of our packages, sorts of packing and others in our Infineon Internet Page "Products": http://www.infineon.com/products. SMD = Surface Mounted Device Data Sheet 21 Dimensions in mm Rev. 2.7, 2007-06-25
TLE 4271-2
Revision History Version Rev. 2.7 Date Changes
2007-03-20 Initial version of RoHS-compliant derivate of TLE 4271-2 Page 1: AEC certified statement added Page 1 and Page 19 ff: RoHS compliance statement and Green product feature added Page 1 and Page 19 ff: Package changed to RoHS compliant version Legal Disclaimer updated
Data Sheet
22
Rev. 2.7, 2007-06-25
Edition 2007-06-25 Published by Infineon Technologies AG 81726 Munich, Germany
(c) 2007 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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