TPS61062DRBR datasheet(3/22 Pages) TI

Part #	TPS61062DRBR

Description	CONSTANT CURRENT LED DRIVER WITH DIGITAL AND PWM BRIGHTNESS CONTROL

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Manufacturer	TI [Texas Instruments]

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Comparator

Error

Amplifier

FB

PGND

Q1

OUT

VIN

EN

Q2

EN

ILED

GND

EN

OVP

EN

50-mS

Turnoff

Delay

Bias Vref = 1.22 V

Thermal Shutdown

UVLO

Pre-Charge Current/PWM

Short-Circuit Detection

SW

Vref

Oscillator

1 MHz

Control Logic

Gate Drive Circuit

Current Limit

Current Sense

Ramp

Compensation

Σ

ILED = High VFB = 250 mV

ILED = Low VFB = 500 mV

ILED Programmed VFB = 15.6 mV to 500 mV

Vref = 1.22 V

5-Bit

DAC

15.6 mV/Step

Digital

Interface

ABSOLUTE MAXIMUM RATINGS

(1)

TPS61060

TPS61061

TPS61062

SLVS538 – NOVEMBER 2004

FUNCTIONAL BLOCK DIAGRAM

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

UNIT

VIN(2)

Supply voltages on pin

–0.3 V to 7 V

EN, ILED, FB(2)

Voltages on pins

–0.3 V to 7 V

OUT(2)

Voltage on pin

33 V

SW(2)

Voltage on pin

33 V

Continuous power dissipation

See Dissipation Rating Table

Operating junction temperature range

–40

°C to 150°C

Storage temperature range

–55

°C to 150°C

Lead temperature (soldering, 10 sec)

260

°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 network ground terminal.

3

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TPS61062DRBR Datasheet(PDF) 3 Page - Texas Instruments

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