CS3865C

Total Power Supply and Zener Current ..........................................................................................................50mA
Output Current, Source or Sink (Note 1)...........................................................................................................1.0A
Output Energy (capacitive load per cycle) .......................................................................................................5.0J
Current Sense, Enable and Voltage.....................................................................................................-0.3 to +5.5V
Feedback Inputs High State (Voltage)...............................................................................................................5.5V
Low State (Reverse Current) ........................................................................................................................-5.0mA
Error Amp Output Sink Current.........................................................................................................................10mA
Storage Temperature Range ............................................................................................................-65 to +150°C
Operating Junction Temperature..................................................................................................................+150°C
Operating Ambient Temperature.............................................................................................................0 to +70°C
Lead Temperature Soldering Wave Solder (through hole styles only) .............................10 sec. max, 260°C peak
Reflow (SMD styles only) ...........................................................................60 sec. max above 183°C, 230°C peak

The CS3865C is a high performance, fixed frequency, dual current mode controller. CS3865C is used in Off-Line and DC to DC converter applications and require a minimum number of external components. This integrated circuit features a unique oscillator for precise duty cycle limit and frequency control, a temperature compensated reference, two high gain error amplifiers, two current sensing comparators, and two high current totem pole outputs ideally suited for driving power MOSFETs. One of the outputs VOUT2 is switchable via the ENABLE 2 pin.

CS3865C Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle-by-cycle current limiting, and a latch for single pulse metering of each output.

The CS3865C has a 14V start voltage and is pin compatible with the MC34065H.