ZXLD1352 데이터 시트보기 (PDF) - Zetex => Diodes

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ZXLD1352

350mA LED driver with internal switch and enhanced PWM dimming range

Zetex => Diodes 

LX voltage

SENSE voltage

VIN

0V

VIN

115mV

Toff

Ton

85mV

Coil current

Comparator

input voltage

0V

VADJ

0.15VADJ

Comparator

output

5V

0V

Figure 1 Operating waveforms

ZXLD1352

100mV

VSENSE-

VSENSE+

IOUTnom +15%

IOUTnom

IOUTnom -15%

0.15VADJ

Issue 1 - August 2008

6

© Diodes Incorporated 2008

www.zetex.com

www.diodes.com

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