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 

Preliminary

RT9269

Power On Waveform

VCE = VIN = 3.8V

IOUT = 20mA

VCE

Power Up Waveform

VCE = 1.25V

VIN = 3.8V

IOUT = 20mA

VCE

IIN

IOUT

Refer to Application Circuit Fig. 2

Time (10mS/DIV)

CH1: 2V/DIV

Shutdown Waveform

VCE = 1.25V

VIN = 3.8V

IOUT = 20mA

VLX

IIN

IOUT

Refer to Application Circuit Fig. 2

CH1: 2V/DIV

Time (500µS/DIV)

Power On Waveform

VCE = VIN = 3.2V

IOUT = 40mA

VIN

IIN

IOUT

VLX

Refer to Application Circuit Fig. 1

Time (5mS/DIV)

CH1: 2V/DIV

CH2: 100mA/DIV

IIN

IOUT

Refer to Application Circuit Fig. 2

Time (500µS/DIV)

CH1: 2V/DIV

LX vs. Ripple Waveform

VLX

IOUT

VOUT

VCE = VIN = 3.8V

IOUT = 20mA

Refer to Application Circuit Fig. 2

CH1: 2V/DIV

Time (1µS/DIV)

VIN

IIN

IOUT

Power Up Waveform

VCE = 1.2V

VIN = 3.2V

IOUT = 40mA

CH1: 2V/DIV

CH2: 200mA/DIV

VLX

Refer to Application Circuit Fig. 1

Time (250µS/DIV)

DS9269-01 March 2003

www.richtek.com

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