YD3842 查看數據表（PDF） - Unspecified

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产品描述 (功能)

生产厂家

YD3842

CURRENT MODE PWM CONTROL CIRCUITS

Unspecified 

YOUDA INTEGRATED CIRCUIT

YD3842

CURRENT MODE PWM CONTROL CIRCUITS—YD3842

DESCRIPTION

The YD3842 provides the necessary features to implement off-line or DC fixed frequency current mode control

schemes with a minimal external parts count.

FEATURES

*Optimized For Off-line and DC to DC Converts

*Low Start up Current

*Automatic Feed Forward Compensation

*Pulse-by-Pulse Current Limiting

*Under-voltage Lookout with Hysteresis

*Double Pulse Suppression

*High Current Totem Pole Output

*Internally Trimmed Band-gap Reference

*500kHz Operation

BLOCK DIAGRAM

8

7

UVL

1/2

5V

REF

S/R

6

5

VCC

RS

+ EA

-

1/3

OSC

1V

1

2

3

4

WuXi YouDa Electronics Co., Ltd

Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China

Tel: 86-510-85205117 86-510-85205106 Fax: 86-510-85205110 Website: www.e-youda.com

SHENZHEN OFFICE Tel： 86-755-83740369

Fax： 86-755-83741418

Ver 5.0

1 of 4

2006-7-10

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