RT9269CE Ver la hoja de datos (PDF) - Richtek Technology

Número de pieza

componentes Descripción

Fabricante

RT9269CE

Tiny Package, High Efficiency, Constant Current LED Driver

Richtek Technology 

RT9269

Preliminary

Shutdown Waveform

VIN

VCE = 1.2V

VIN = 3.2V

IOUT = 40mA

IIN

IOUT

CH1: 2V/DIV

CH2: 200mA/DIV

VLX

Refer to Application Circuit Fig. 1

Time (250µS/DIV)

Brightness Control

LX vs. Output Ripple Waveform

VIN

IIN VCE = VIN = 3.2V

IOUT = 40mA

CH1: 1V/DIV

VOUT

Ripple Refer to Application Circuit Fig. 1

Time (1µS/DIV)

Brightness Control

VIN

LX

80% Duty

CE

External Signal

IOUT

VIN = 3.0V

IOUT = 20mA

Time (1mS/DIV)

VIN

LX

80% Duty

CE

External Signal

IOUT

VIN = 2.5V

IOUT = 20mA

Time (1mS/DIV)

www.richtek.com

8

DS9269-01 March 2003

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