L5101 Просмотр технического описания (PDF) - Unisonic Technologies

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L5101

WHITE LED STEP-UP CONVERTER

Unisonic Technologies 

L5101

LINEAR INTEGRATED CIRCUIT

APPLICATION INFORMATION(Cont.)

2. Using a DC Voltage

VIN

C1

1μF

L

10μH

D1

VIN

SW

RB521S-30

SHDN OVP

GND

FB

L5101

VDC

0~5V

R2

51KΩ

R1

1KΩ

RFB

4.7Ω

C2

1μF

Fig.3 Dimming Control Using a DC Voltage

3. Using a Filtered PWM Signal

VIN

C1

1μF

L

10μH

D1

VIN

SW

SHDN OVP

GND

FB

L5101

RB521S-30

R1

1KΩ

R3

5.1KΩ

PWM

C3

0.1μF

R2

51KΩ

RFB

4.7Ω

Fig.4 Dimming Control Using a Filter PWM Signal

C2

1μF

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

7 of 9

QW-R103-026,A

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