Type Package TLE 4271-2 PG-TO220-7-11 TLE 4271-2 S PG-TO220-7-12 TLE 4271-2 G PG-TO263-7-1 5-V Low Drop Fixed Voltage Regulator TLE 4271-2 ^ Data Sheet 1 Rev. 2.7, 2007-06-25 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 Functional Description 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.
Transcript
Type Package
TLE 4271-2 PG-TO220-7-11
TLE 4271-2 S PG-TO220-7-12
TLE 4271-2 G PG-TO263-7-1
5-V Low Drop Fixed Voltage Regulator
TLE 4271-2
^
P-TO220-7-11
P-TO220-7-12
P-TO263-7-1
Data Sheet 1 Rev. 2.7, 2007-06-25
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
Functional Description
The TLE 4271-2 is functional and electrical identical toTLE 4271.
The device is a 5-V low drop fixed voltage regulator. Themaximum input voltage is 42 V (65 V, ≤ 400 ms). Up toan input voltage of 26 V and for an output current up to550 mA it regulates the output voltage within a 2%accuracy. The short circuit protection limits the outputcurrent of more than 650 mA. The IC can be switched offvia the inhibit input. An integrated watchdog monitors theconnected controller. The device incorporatesovervoltage protection and temperature protection thatdisables the circuit at overtemperature.
Data Sheet 2 Rev. 2.7, 2007-06-25
TLE 4271-2
Figure 1 Pin Configuration (top view)
Table 1 Pin Definitions and Functions
Pin Symbol Function
1 I Input; block to ground directly on the IC with ceramic capacitor.
2 INH Inhibit
3 RO Reset Output; the open collector output is connected to the 5 V output via an integrated resistor of 30 kΩ.
4 GND Ground
5 D Reset Delay; connect a capacitor to ground for delay time adjustment.
6 WI Watchdog Input
7 Q 5-V Output; block to ground with 22 µF capacitor, ESR < 3 Ω.
AEP01939GNDINH
Ι ROWI
D Q
1 7
GNDINHΙ RO
1
WIAEP02017
D Q
7AEP01938
INHRO
GND
1 7
WIDΙ Q
PG-TO220-7-11 PG-TO220-7-12 PG-TO263-7-1
TLE 4271-2
Data Sheet 3 Rev. 2.7, 2007-06-25
Circuit Description
The control amplifier compares a reference voltage, which is kept highly accurate byresistance adjustment, to a voltage that is proportional to the output voltage and drivesthe base of a series transistor via a buffer. Saturation control as a function of the loadcurrent 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 orequal VUD. The delay capacitor CD is charged with the current ID for output voltagesgreater than the reset threshold VRT. If the output voltage gets lower than VRT (‘resetcondition’) a fast discharge of the delay capacitor CD sets in and as soon as VD getslower 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, thewatchdog circuit is enabled and discharges CD with the constant current IDWD. If there isno rising edge observed at the watchdog input, CD will be discharge down to VLDW, thenreset output RO will be set to low and CD will be charged again with the current IDWC untilVD reaches VUD and reset will be set high again.
If the watchdog pulse (rising edge at watchdog input WI) occurs during the dischargeperiod 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:
VI = 13.5 V; -40 °C ≤ Tj ≤ 125 °C; VINH > VU,INH (unless otherwise specified)
Parameter Symbol Limit Values Unit Test Condition
Min. Typ. Max.
Output voltage VQ 4.90 5.00 5.10 V 5 mA ≤ IQ ≤ 550 mA;6 V ≤ VI ≤ 26 V
Output voltage VQ 4.90 5.00 5.10 V 26 V ≤ VI ≤ 36 V;IQ ≤ 300 mA
Output current limiting
IQmax 650 800 – mA VQ = 0 V
Current consumptionIq = II
Iq – – 6 µA VINH = 0 V; IQ = 0 mA
Current consumptionIq = II
Iq – 800 – µA VINH = 5 V; IQ = 0 mA
Current consumptionIq = II - IQ
Iq – 1 1.5 mA IQ = 5 mA
Current consumptionIq = II - IQ
Iq – 55 75 mA IQ = 550 mA
Current consumptionIq = II - IQ
Iq – 70 90 mA IQ = 550 mA; VI = 5 V
Drop voltage Vdr – 350 700 mV IQ = 550 mA1)
Load regulation ∆VQ – 25 50 mV IQ = 5 to 550 mA;VI = 6 V
Supply voltage regulation
∆VQ – 12 25 mV VI = 6 to 26 VIQ = 5 mA
Power supply Ripple rejection
PSRR – 54 – dB fr = 100 Hz;Vr = 0.5 Vpp
Data Sheet 8 Rev. 2.7, 2007-06-25
TLE 4271-2
Reset Generator
Switching threshold VRT 4.5 4.65 4.8 V –
Reset high voltage VROH 4.5 – – V –
Saturation voltage VRO,SAT – 60 – mV Rintern = 30 kΩ;1.0 V ≤ VQ ≤ 4.5 V
Saturation voltage VRO,SAT – 200 400 mV IR = 3 mA2);VQ = 4.4 V
Reset pull-up R 18 30 46 kΩ internally connected to Q
Lower reset timing threshold
VLD 0.2 0.45 0.8 V VQ < VRT
Charge current ID 8 14 25 µA VD = 1.0 V
Upper timing threshold
VUD 1.4 1.8 2.3 V –
Delay time tD 8 13 18 ms CD = 100 nF
Reset reaction time tRR – – 3 µs CD = 100 nF
Overvoltage Protection
Turn-off voltage VI, ov 40 44 46 V –
Inhibit
Turn-on voltage VU,INH 1.0 2.0 3.5 V VQ = high (> 4.5 V)
Turn-off voltage VL,INH 0.8 1.3 3.3 V VQ = low (< 0.8 V)
Inhibit current IINH 8 12 25 µA VINH = 5 V
Watchdog
Upper watchdog switching threshold
VUDW 1.4 1.8 2.3 V –
Lower watchdog switching threshold
VLDW 0.2 0.45 0.8 V –
Discharge current IDWD 1.5 2.7 3.5 µA VD = 1 V
Charge current IDWC 8 14 25 µA VD = 1 V
Watchdog period tWD,P 40 55 80 ms CD = 100 nF
Table 4 Characteristics (cont’d)
VI = 13.5 V; -40 °C ≤ Tj ≤ 125 °C; VINH > VU,INH (unless otherwise specified)
Parameter Symbol Limit Values Unit Test Condition
Min. Typ. Max.
TLE 4271-2
Data Sheet 9 Rev. 2.7, 2007-06-25
Watchdog trigger time
tWI,tr 30 45 66 ms CD = 100 nFsee diagram
Watchdog pulse slew rate
VWI 5 – – V/µs from 20% to 80% VQ
1) Drop voltage = VI - VQ (measured when the output voltage has dropped 100 mV from the nominal valueobtained at 13.5 V input)
2) Test condition not applicable during delay time for power-on reset.
Table 4 Characteristics (cont’d)
VI = 13.5 V; -40 °C ≤ Tj ≤ 125 °C; VINH > VU,INH (unless otherwise specified)
Parameter Symbol Limit Values Unit Test Condition
Min. Typ. Max.
Data Sheet 10 Rev. 2.7, 2007-06-25
TLE 4271-2
Figure 3 Test Circuit
Figure 4 Circuit
32
V
V Ι
V INH ΙC D
Ι
D
5D
4
WI
GND
V
6
AES01941
ROV
V Q
470 nF1000 F
Ι
µ
Ι
ΙTLE 4271-2
1 7 Q
22 F
RO
µ
Ι
22 F
to MCReset 3
4
5
100 nF
AES01942
µ
470 nF
Input
TLE 4271-2
1 75 V-Output
6
2e.g. KL 15Input
WatchdogSignalfrom MC
TLE 4271-2
Data Sheet 11 Rev. 2.7, 2007-06-25
Application Description
The IC regulates an input voltage in the range of 6 V < VI < 40 V to VQnom = 5.0 V. Up to26 V it produces a regulated output current of more than 550 mA. Above 26 V the save-operating-area protection allows operation up to 36 V with a regulated output current ofmore than 300 mA. Overvoltage protection limits operation at 42 V. The overvoltageprotection hysteresis restores operation if the input voltage has dropped below 36 V. TheIC can be switched off via the inhibit input, which causes the quiescent current to dropbelow 10 µA. A reset signal is generated for an output voltage of VQ < 4.5 V. Thewatchdog circuit monitors a connected controller. If there is no positive-going edge at thewatchdog input within a fixed time, the reset output is set to low. The delay for power-onreset and the maximum permitted watchdog-pulse period can be set externally with acapacitor.
Design Notes for External Components
An input capacitor CI is necessary for compensation of line influences. The resonantcircuit consisting of lead inductance and input capacitance can be damped by a resistorof approx. 1 Ω in series with CI. An output capacitor CQ is necessary for the stability ofthe regulating circuit. Stability is guaranteed at values of CQ ≥ 22 µF and an ESR of< 3 Ω.
Reset Circuitry
If the output voltage decreases below 4.5 V, an external capacitor CD on pin D will bedischarged by the reset generator. If the voltage on this capacitor drops below VDRL, areset signal is generated on pin RO, i.e. reset output is set low. If the output voltage risesabove the reset threshold, CD will be charged with constant current. After the power-on-reset time the voltage on the capacitor reaches VDU and the reset output will be set highagain. The value of the power-on-reset time can be set within a wide range dependingof the capacitance of CD.
Reset Timing
The power-on reset delay time is defined by the charging time of an external capacitorCd which can be calculated as follows:
tD = CD × ∆V/ID (1)
Definitions:
• CD = delay capacitor• tD = reset delay time• ID = charge current, typical 14 µA• ∆V = VUD, typical 1.8 V• VUD = upper delay timing threshold at CD for reset delay time
Data Sheet 12 Rev. 2.7, 2007-06-25
TLE 4271-2
The reset reaction time trr is the time it takes the voltage regulator to set the reset outLOW after the output voltage has dropped below the reset threshold. It is typically 1 µsfor delay capacitor of 47 nF. For other values for Cd the reaction time can be estimatedusing the following equation:
tRR ≈ 20 s/F × Cd (2)
Figure 5 Time Response
AET01985
t D
t RR
RRt<
PowerReset Shutdown
Thermal Voltage Dropat Input
Undervoltageat Output
SecondarySpike Bounce
Load Shutdownon
VRO, SAT
LDVUDV
VD, SAT
RTV
L, INHV
VU, INH
INHV
ROV
VD
QV
ΙV
t
t
t
t
t
=dtVd D
DC
Ι
TLE 4271-2
Data Sheet 13 Rev. 2.7, 2007-06-25
Watchdog Timing
Figure 6 Time Response, Watchdog Behavior
AES03078
WD, Pt
t WD, L
DV
VQ
V Ι
VR
WΙV
WΙ, trtUDWV
=-VLDW( ) UDWV -VLDW( )
Ι DWD Ι DWCt =WD, L CD
WΙ, trt
WD, PtUDWV
=-VLDW( ) ( )Ι DWC +ΙDWD
Ι .DWC Ι DWD
CDC ;D ;
UDWV
VLDW
Data Sheet 14 Rev. 2.7, 2007-06-25
TLE 4271-2
Typical Performance Characteristics
Output Voltage VQ versusTemperature Tj
Output Voltage VQ versusInput Voltage VI (VINH = VI)
AED01928
-40 0 40 80 120 ˚C 1604.6
jT
QV
VI = 13.5 V
4.7
4.8
4.9
5.0
5.1
V5.2
R6
4
2
040 2
8
12
10QV V
10V6 8
V Ι
AED01929
= 25L Ω
Data Sheet 15 Rev. 2.7, 2007-06-25
TLE 4271-2
Output Current Limit IQ versusTemperature Tj
Current Consumption Iq versusOutput Current IQ
Output Current IQ versusInput Voltage VI
Current Consumption Iq versusOutput Current IQ
AED01930
-40 0 40 80 120 ˚C 1600
jT
200
400
600
800
1000
mA1200
Q maxI
00
AED03076
Ι qmA
= 13.5 V
mA
ΙV
20 40 60 80 120
QΙ
1
2
3
4
5
6
AED01931
0 10 20 30 40 V 500
0.4
0.8
1.2
A
1.0
0.6
0.2
IV
IQ
= 125 ˚CT j25 ˚C
00
AED03077
Ι qmA
= 13.5 V
mA
ΙV
100 200 300 400 600
QΙ
10
20
30
40
50
60
70
80
Data Sheet 16 Rev. 2.7, 2007-06-25
TLE 4271-2
Current Consumption Iq versusInput Voltage VI
Inhibit Current IINH versusInhibit Voltage VINH
Drop Voltage Vdr versusOutput Current IQ
Output Voltage VQ versusInhibit Voltage VINH
AED01934
0 10 20 30 40 V 500
40
80
120
mA
100
60
20
IV
Iq
20 Ω
LR = 10 Ω
50 ΩRL =
00
1 632
INH
AED01944
4 V
2
4
6
8
10
12
V Ι = 13.5 V= 25 CjT
INH, highΙ
Ι INH, on
Ι INH, off
5
INHV
µAΙ
400
200
300
100
2000 4000
800
600
700
500
DrVmV
mA600 1000
Ι Q
AED02755
T = 125 Cj
T = 25 Cj
3
3
2100
1
2
6
5
4
V
5 V4 6
V INH
= 25 C= 13.5 VΙ
j
VT
AED01945
QV
Data Sheet 17 Rev. 2.7, 2007-06-25
TLE 4271-2
Inhibit Current Consumptions IINHversus Temperature Tj
Switching Voltage VUD and VLDWversus Temperature Tj
Inhibit Voltages VINH versusTemperature Tj
-400
0 1208040
T j
A
14AED01946
160
Ι INHµ
2
4
6
8
10
12
Ι INH, high
Ι INH, on
Ι INH, off
UD
40-40 00
VV
V UDW, V
V Ι
160 C80 120
T j
AED01948
= 13.5 V
1.2
0.8
0.4
1.6
2.4
2.0
LDWV
3
2
1
40-40 00
4
V
6
5INH
160 C80 120
AED01947
jT
V
VINH, on
INH, offV
Data Sheet 18 Rev. 2.7, 2007-06-25
TLE 4271-2
Charge Current ID, IDWC and Discharge Current IDWD versus Temperature Tj
Watchdog Pulse Time Tw versusTemperature Tj
AED01949
-400
IV = 13.5 V
2
4
6
8
10
12
14
16µA
0 40 80 120 160˚C
I
T j
= 1 VDV
DI , IDWC
IDWD
80
40
-400
10
30
20
400
50
60
70
80
160120 C
T j
= 13.5 V
AED01950
ΙCD
V= 100 nF
msWT
TLE 4271-2
Data Sheet 19 Rev. 2.7, 2007-06-25
Package Outlines
Figure 7 PG-TO220-7-11 (Plastic Transistor Single Outline)
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly productsand to be compliant with government regulations the device is available as a greenproduct. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitablefor Pb-free soldering according to IPC/JEDEC J-STD-020).
Typical
±0.11.27
4.4
9.25
±0.20.05
1)
All metal surfaces tin plated, except area of cut.
2.4
0.5 ±0.1
±0.3
8.6
10.2
±0.3
±0.43.9
±0.48.4
3.7±
0.3
A
A0.25 M
9.8 ±0.15
2.8
1)
15.6
5±0.
3
13.4
0...0.15
1.27
0.6 ±0.1
C
±0.2
17±0
.3
8.5 1)
9.9 ±0.2
7x
-0.1
53.
7
10 ±0.2
6x
C
1.6±
0.3
GPT09083
You can find all of our packages, sorts of packing and others in ourInfineon Internet Page “Products”: http://www.infineon.com/products.
Dimensions in mmSMD = Surface Mounted Device
Data Sheet 20 Rev. 2.7, 2007-06-25
TLE 4271-2
Figure 8 PG-TO220-7-12 (Plastic Transistor Single Outline)
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly productsand to be compliant with government regulations the device is available as a greenproduct. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitablefor Pb-free soldering according to IPC/JEDEC J-STD-020).
GPT09084
A
BA0.25 M
Typical
9.8 ±0.15
2.8
1)
15.6
5±0.
3
13.4
0...0.15
1.27
0.6 ±0.1
±0.11.27
4.4B
9.25
±0.20.05
1)
All metal surfaces tin plated, except area of cut.
C
±0.2
17±0
.3
8.5 1)
10 ±0.2
3.7-0.15
C
2.4
0.5 ±0.1
13±0
.5±0.5
11
7x
You can find all of our packages, sorts of packing and others in ourInfineon Internet Page “Products”: http://www.infineon.com/products.
Dimensions in mmSMD = Surface Mounted Device
TLE 4271-2
Data Sheet 21 Rev. 2.7, 2007-06-25
Figure 9 PG-TO263-7-1 (Plastic Transistor Single Outline)
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly productsand to be compliant with government regulations the device is available as a greenproduct. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitablefor Pb-free soldering according to IPC/JEDEC J-STD-020).
A
BA0.25 M
0.1
Typical
±0.210
8.5 1)
7.55
1)
(15)
±0.2
9.25
±0.3
1
0...0.15
7 x 0.6 ±0.1
±0.1
GPT09114
1.27
4.4
B
0.5 ±0.1±0
.32.
7
4.7±
0.5
0.05
1)
0.1
Metal surface min. X = 7.25, Y = 6.9
2.4
1.27
All metal surfaces tin plated, except area of cut.
0...0.3
B
6 x8˚ MAX.
You can find all of our packages, sorts of packing and others in ourInfineon Internet Page “Products”: http://www.infineon.com/products.
Dimensions in mmSMD = Surface Mounted Device
Data Sheet 22 Rev. 2.7, 2007-06-25
TLE 4271-2
Revision History
Version Date Changes
Rev. 2.7 2007-03-20 Initial version of RoHS-compliant derivate of TLE 4271-2Page 1: AEC certified statement addedPage 1 and Page 19 ff: RoHS compliance statement and Green product feature addedPage 1 and Page 19 ff: Package changed to RoHS compliant versionLegal Disclaimer updated
Legal DisclaimerThe 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.
InformationFor further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com).
WarningsDue 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.
