CM6800G

Product Summary

The CM6800G is a low start-up current PFC/PWM controller combo for power factor corrected, switched mode power supplier. Power Factor Correction (PFC) allows the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply that fully compiles with IEC-1000-3-2 specifications. The applications of the CM6800G are Desktop PC Power Supply, Internet Server Power Supply, IPC Power Supply, UPS, Battery Charger, DC Motor Power Supply, Monitor Power Supply, Telecom System Power Supply, Distributed Power.

Parametrics

CM6800G absolute maximum ratings: (1)VCC: 20 V; (2)IEAO: 0 to 7.5 V; (3)Voltage on Any Other Pin GND: -0.3 to VCC + 0.3 V; (4)IREF: 10 mA; (5)IAC Input Current: 1 mA; (6)Peak PFC OUT Current, Source or Sink: 1 A; (7)Peak PWM OUT Current, Source or Sink: 1 A; (8)PFC OUT, PWM OUT Energy Per Cycle: 1.5μJ ; (9)Junction Temperature: 150℃; (10)Storage Temperature Range: -65 to 150℃; (11)Operating Temperature Range: -40 to 125℃; (12)Lead Temperature (Soldering, 10 sec): 260℃.

Features

CM6800G features: (1)Patent Number #5,565,761, #5,747,977, #5,742,151, #5,804,950, #5,798,635; (2)Pin to pin compatible with ML4800 and FAN4800; (3)Additional folded-back current limit for PWM section; (4)23V Bi-CMOS process; (5)VIN OK turn on PWM at 2.5V instead of 1.5V; (6)Internally synchronized leading edge PFC and trailing edge PWM in one IC; (7)Slew rate enhanced transconductance error amplifier for ultra-fast PFC response; (8)Low start-up current (100 μA typ.) ; (9)Low operating current (3.0mA type.); (10)Low total harmonic distortion, high PF; (11)Reduces ripple current in the storage capacitor between the PFC and PWM sections; (12)Average current, continuous or discontinuous boost leading edge PFC; (13)VCC OVP Comparator, Low Power Detect Comparator; (14)PWM configurable for current mode or voltage mode operation; (15)Current fed gain modulator for improved noise immunity; (16)Brown-out control, over-voltage protection, UVLO, and soft start, and Reference OK.

Diagrams