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YD3842 Datasheet

Part Number YD3842
Manufacturers Wuxi Youda electronics
Logo Wuxi Youda electronics
Description CURRENT MODE PWM CONTROL CIRCUITS
Datasheet YD3842 DatasheetYD3842 Datasheet (PDF)

www.DataSheet4U.com 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 O.

  YD3842   YD3842






Part Number YD3843
Manufacturers Wuxi Youda electronics
Logo Wuxi Youda electronics
Description CURRENT MODE PWM CONTROL CIRCUITS
Datasheet YD3842 DatasheetYD3843 Datasheet (PDF)

www.DataSheet4U.com YOUDA INTEGRATED CIRCUIT YD3843 CURRENT MODE PWM CONTROL CIRCUITS—YD3843 DESCRIPTION The YD3843 provides the necessary features to implement off-line or DC to 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(<1mA) *Automatic feed forward compensation *Pulse-by-Pulse current limiting *Enhanced load response characteristic *Under-voltage lookout with hysteresis. .

  YD3842   YD3842







CURRENT MODE PWM CONTROL CIRCUITS

www.DataSheet4U.com 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 VCC 6 5 R S + EA 1/3 1V OSC 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 www.DataSheet4U.com YOUDA INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS(Tamb=25℃) PARAMETER Supply Voltage (Low impedance Source) Output Current Analog Inputs(pin 2, 3) Error Amplifier Output Sink Current Power Dissipation SYMBOL VCC Io VI(ANA) lSINK(EA) PD VALUE 30 ±1 -0.3 to +6.3 10 1.0 YD3842 UNIT V A V mA W ELECTRICAL CHARACTERISTICS (Tamb=25℃, VCC1=10V, Vcc2=9.5V, unless otherwise specified) PARAMETER Reference Section Output Voltage Line Regulation Load Regulation Output Noise Voltage Long Term Stability Output Short Circuit Oscillator Section Initial Acc.


2006-11-09 : LP121S4    LP121XQ    LP121X04    LP121X1-A2M1    LP121X1-A2    LP121SQ    LP121SL    LP121SB    LP121SA-A2    LP121S2-A2   


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