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CM6903AIZ Datasheet(PDF) 3 Page - Champion Microelectronic Corp. |
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CM6903AIZ Datasheet(HTML) 3 Page - Champion Microelectronic Corp. |
3 / 15 page CM6903A Low Pin Count PFC/PWM CONTROLLER COMBO 2008/10/20 Rev1.4 Champion Microelectronic Corporation Page 3 BLOCK DIAGRAM 2.5V .. fpfc= R1A 100K 2 1 R1C 5.1K 2 1 9 IAC -1V SS 17.9V .. CM6903A 0.5V VCC OVP + - . - PFC ILIMIT + - . VIN OK + - . + FAULTB 2.45V .. gmv - + . PFCCLKB VREF OK 16.4V 67.5KHz PFC OVP + - . - VREFOK PWM CMP + - . - 2.75V 0.75V RAMP ISENSEAMP 2 VCC PWMCLK 10ms PWM CLK S OR Q Q R fpwm= 2.5V 4 PFCOUT VCC 5 GND 7 VEAO 6 ISENSE VCC 1.5V PFCCLKB PWMCLK . . VFB VREF OK 1 DCILIMIT OS R Q Q R R 8 VFB PFC CMP + - . Tri-Fault Detect + - . 3 PWMOUT R1B 400K 2 1 67.5KHz UVLO UVLO ABSOLUTE MAXIMUM RATINGS Absolute Maximum ratings are those values beyond which the device could be permanently damaged. Parameter Min. Max. Units VCC MAX 20 V IAC (after start up) GND-0.3 1.0 V ISENSE Voltage -5 0.7 V PFC OUT GND – 0.3 VCC + 0.3 V PWM OUT GND – 0.3 VCC + 0.3 V VEAO 0 6.3 V Voltage on Any Other Pin GND – 0.3 VCC + 0.3 V ICC Current (Average) 40 mA Peak PFC OUT Current, Source or Sink 0.5 A Peak PWM OUT Current, Source or Sink 0.5 A PFC OUT, PWM OUT Energy Per Cycle 1.5 μJ Junction Temperature 150 ℃ Storage Temperature Range -65 150 ℃ Operating Temperature Range -40 125 ℃ Lead Temperature (Soldering, 10 sec) 260 ℃ Thermal Resistance (θJA) 80 ℃ /W |
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