Texas Instruments TLE4275QKTTRQ1, TLE4275-Q1 Datasheet

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FEATURES

KTT PACKAGE

(TOP VIEW)

IN

1

RESET

GND

DELAY

OUT

5
4
3
2

DESCRIPTION/ORDERING INFORMATION

TLE4275-Q1

5-V LOW-DROPOUT VOLTAGE REGULATOR

SLVS647A – AUGUST 2006 – REVISED APRIL 2007

• Qualified for Automotive Applications

• Output Voltage 5 V ± 2%

• Very Low Current Consumption

• Power-On and Undervoltage Reset

• Reset Low-Level Output Voltage < 1 V

• Very Low Dropout Voltage

• Short-Circuit Proof

• Reverse-Polarity Proof

• ESD Protection > 6 kV

The TLE4275 is a monolithic integrated low-dropout voltage regulator offered in a 5-pin TO package. An input
voltage up to 45 V is regulated to V

OUT

= 5 V (typ). The device can drive loads up to 450 mA and is short-circuit
proof. At overtemperature, the TLE4275 is turned off by the incorporated temperature protection. A reset signal
is generated for an output voltage, V

OUT,rt

, of 4.65 V (typ). The reset delay time can be programmed by the

external delay capacitor.
The input capacitor, C

IN

, compensates for line fluctuation. Using a resistor of approximately 1 Ω , in series with

C

IN

, dampens the oscillation of input inductivity and input capacitance. The output capacitor, C

OUT

, stabilizes the

regulation circuit. Stability is specified at C

OUT

≥ 22 µ F and ESR ≤ 5 Ω , within the operating temperature range.

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 device also incorporates a number of internal circuits for
protection against:

• Overload

• Overtemperature

• Reverse polarity

ORDERING INFORMATION

T

J

PACKAGE

(1)

ORDERABLE PART NUMBER TOP-SIDE MARKING

–40 ° C to 150 ° C TO-263 – KTT Reel of 500 TLE4275QKTTRQ1 TLE4275Q1

(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

TERMINAL FUNCTIONS

NO. NAME DESCRIPTION

1 IN Input. Connect to ground as close to device as possible, through a ceramic capacitor.
2 RESET Reset output. Open-collector output.
3 GND Ground. Internally connected to heatsink.
4 DELAY Reset delay. Connect to ground with a capacitor to set delay time.
5 OUT Output. Connect to ground with ≥ 22- µ F capacitor, ESR < 5 Ω at 10 kHz.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006–2007, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

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Reset

Generator

IN

OUT

DELAY

RESET

1

5

2

4

3

Saturation

Control and

Protection

Circuit

Temperature

Sensor

Bandgap

Reference

GND

Absolute Maximum Ratings

(1)

Recommended Operating Conditions

TLE4275-Q1
5-V LOW-DROPOUT VOLTAGE REGULATOR

SLVS647A – AUGUST 2006 – REVISED APRIL 2007

FUNCTIONAL BLOCK DIAGRAM

over operating free-air temperature range (unless otherwise noted)

MIN MAX UNIT

IN –42 45

V

I

Input voltage range

(2)

V

DELAY –0.3 7
OUT –1 16

V

O

Output voltage range V

RESET –0.3 25

I

I

Input current DELAY ± 2 mA

I

O

Output current RESET ± 5 mA

θ

JA

Package thermal impedance, junction to free air

(3) (4)

26.5 ° C/W

T

J

Operating junction temperature range –40 150 ° C

T

stg

Storage temperature range –65 150 ° C

(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating

conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to the network ground terminal.
(3) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient

temperature is PD= (TJ(max) – TA)/ θJA. Operating at the absolute maximum TJof 150 ° C can affect reliability.
(4) The package thermal impedance is calculated in accordance with JESD 51-7.

over operating free-air temperature range (unless otherwise noted)

MIN MAX UNIT

V

I

Input voltage 5.5 42 V

T

J

Junction temperature –40 150 ° C

2

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Electrical Characteristics

DV

O

DT

Switching Characteristics

TLE4275-Q1

5-V LOW-DROPOUT VOLTAGE REGULATOR

SLVS647A – AUGUST 2006 – REVISED APRIL 2007

over recommended operating free-air temperature range, VI= 13.5 V, TJ= –40 ° C to 150 ° C (unless otherwise noted)
(see Figure 1 )

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

IO= 5 mA to 400 mA, VI= 6 V to 28 V 4.9 5 5.1

V

O

Output voltage V

IO= 5 mA to 200 mA, VI= 6 V to 40 V 4.9 5 5.1

I

O

Output current limit 450 700 mA

TJ= 25 ° C 150 200

IO= 1 mA µ A

TJ≤ 85 ° C 150 220

Current consumption

I

q

Iq= II– I

O

IO= 250 mA 5 10

mA

IO= 400 mA 12 22

V

do

Dropout voltage

(1)

IO= 300 mA, Vdo= VI– V

O

250 500 mV
Load regulation IO= 5 mA to 400 mA 15 30 mV
Line regulation ∆ VI= 8 V to 32 V, IO= 5 mA –15 5 15 mV

PSSR Power-supply ripple rejection fr= 100 Hz, Vr= 0.5 V

pp

60 dB

Temperature output-voltage drift 0.5 mV/K

V

O,rt

RESET switching threshold 4.5 4.65 4.8 V

V

ROL

RESET output low voltage R

ext

≥ 5 k Ω , VO> 1 V 0.2 0.4 V

I

ROH

RESET output leakage current V

ROH

= 5 V 0 10 µ A

I

D,c

RESET charging current VD= 1 V 3 5.5 9 µ A

V

DU

RESET upper timing threshold 1.5 1.8 2.2 V

V

DRL

RESET lower timing threshold 0.2 0.4 0.7 V

(1) Measured when the output voltage VOhas dropped 100 mV from the nominal value obtained at VI= 13.5 V

over operating free-air temperature range (unless otherwise noted) (see Figure 2 )

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

t

rd

RESET delay time CD= 47 nF 10 16 22 ms

t

rr

RESET reaction time CD= 47 nF 0.5 2 µ s

3

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TYPICAL CHARACTERISTICS

4.6

4.7

4.8

4.9

5

5.1

5.2

-45 -25 -5 15 35 55 75 95 115 135 155
TJ– Junction Temperature – °C

V

O

– Output Voltage – V

VI= 6 V

4.6

4.7

4.8

4.9

5

5.1

5.2

-45 -25 -5 15 35 55 75 95 115 135 155
TJ– Junction Temperature – °C

V

O

– Output Voltage – V

VI= 28 V

0

1

2

3

4

5

6

7

8

9

10

11

12

0 1 2 3 4 5 6 7 8 9 10

V

I

– Input Voltage – V

V

O

– Output Voltage – V

0

100

200

300

400

500

600

700

800

900

1000

1100

1200

-45 -25 -5 15 35 55 75 95 115 135 155
TJ– Junction Temperature – °C

I

O

– Output Current – mA

TLE4275-Q1
5-V LOW-DROPOUT VOLTAGE REGULATOR

SLVS647A – AUGUST 2006 – REVISED APRIL 2007

OUTPUT VOLTAGE OUTPUT VOLTAGE

vs vs

JUNCTION TEMPERATURE JUNCTION TEMPERATURE

OUTPUT VOLTAGE OUTPUT CURRENT

vs vs

INPUT VOLTAGE JUNCTION TEMPERATURE

4

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