FAN5230 Ver la hoja de datos (PDF) - Fairchild Semiconductor

Número de pieza

componentes Descripción

Fabricante

FAN5230

System Electronics Regulator for Mobile PCs

Fairchild Semiconductor 

FAN5230

Vout

VFB12

CK :3

CK :3

Ve

Ramp

PWM

VREF=2.5V

R

Ramp

16R

–

+

Ve

FAN5230

12V Converter

CLK:3

(30%DC, 100kHz)

S

+

–

PWM

R

CLK:3

Q

Q

DISABLE

+5

SW12

V out

Figure 2. FAN5230 12V Internal Block Diagram

3.3V ALWAYS

VIN

LDO

LDO

FAN5230

5V/3.3V-ALWAYS

5V ALWAYS

VFB5

Figure 3. FAN5230 5V/3.3V—ALWAYS Internal Block Diagram

8

REV. 2.8.5 10/17/01

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