TPS61062 datasheet(7/22 Pages) TI

Part #	TPS61062

Description	CONSTANT CURRENT LED DRIVER WITH DIGITAL AND PWM BRIGHTNESS CONTROL

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Manufacturer	TI [Texas Instruments]

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VIN = 4.2 V

VIN = 3 V

LED Current − mA

4 LEDS,

ILED = High,

VOUT = 14.3 V

VIN = 3.6 V

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50

60

70

80

90

0

5

10

15

20

25

VIN = 4.2 V

VIN = 3 V

LED Current − mA

5 LEDS,

ILED = High,

VOUT = 17.8 V

VIN = 3.6 V

EN

2 V/div

Inductor Current

100 mA/div

LED Current

20 mA/div

C1 Frequency

199.9991 Hz

Low Signal

Amplitude

1 ms/div

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ILED − Programming Step

Stepsize typ = 15.6 mV

TPS61060

TPS61061

TPS61062

SLVS538 – NOVEMBER 2004

EFFICIENCY

vs

LED CURRENT

Figure 6.

Figure 7.

DIGITAL BRIGHTNESS CONTROL

FEEDBACK VOLTAGE

vs

PWM DIMMING

ILED PROGRAMMING STEP

Figure 8.

Figure 9.

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TPS61062 Datasheet(PDF) 7 Page - Texas Instruments

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