SM8303-12T View Datasheet(PDF) - Samhop Mircroelectronics

Part Name

Description

MFG CO.

SM8303-12T

150KHz, 3A PWM Buck Switching Regulator

Samhop Mircroelectronics 

SAMHOP Microelectronics Corp.

150KHz, 3A PWM Buck Switching Regulator

Typical Application Circuit

（A） Fixed Type Circuit

SM8303

12V

DC Input

Cin

Capacitor

FB

1

Vin

4

SM8303 2

Output

L1

Inductor

5

3

SD

Gnd

D1

Schottky Diode

3.3V/3A

Output Load

Co

Capacitor

(B) Adjustable Type Circuit

12V

DC Input

Cin

680uF

R2

R1

FB

1

Vin

4

SM8303

2

5

3

Output

SD

Gnd

L1

68uF

D1

1N5824

3.3V/3A

Output Load

Co

1000 uF

Vout = VFB x (1+ R1/R2 ) VFB=1.23V

7

V1.0 May 17 ,2007

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