FAN5233 Просмотр технического описания (PDF) - Fairchild Semiconductor

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FAN5233

System Electronics Regulator for Mobile PCs

Fairchild Semiconductor 

FAN5233

Vout

VFB12

CK :3

CK :3

Ve

Ramp

PWM

VREF=2.5V

R

Ramp

16R

–

+

Ve

FAN5233

12V Converter

CLK:3

(30%DC, 100kHz)

S

+

–

PWM

R

CLK:3

Q

Q

DISABLE

PRODUCT SPECIFICATION

+5V

SW12

V out

Figure 2. FAN5233 12V Internal Block Diagram

VIN

LDO

FAN5233

5V-ALWAYS

5V ALWAYS

Figure 3. FAN5233 5V—ALWAYS Internal Block Diagram

VFB5

8

REV. 1.0.6 1/22/02

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