AP3710 Datasheet | BCD Semiconductor

Data Sheet LOW POWER PWM CONTROLLER FOR OFF-LINE ADAPTER General Description Features The AP3710 is a green-mode PWM controller, its main applications are low power supplies such as offline battery chargers, adapters, STB and other auxiliary supplies, where the needs for low no load power, low total cost and high reliability are all required. The functional blocks of AP3710 include: under voltage lockout with low start-up current; precise voltage reference for internal parators; PWM parator with current limit control, feedback signal and bandgap input; short circuit parator and open circuit protection for opto-coupler. The AP3710 operates at a fixed 60k Hz switching frequency, its output connects to the emitter of high voltage NPN transistor or the source of MOSFET. In normal mode, it works as a switch to turn on or turn off the external transistor. In failure modes like open loop, over voltage or overload due to short circuit, the chip enters into an auto restart mode controlled by the internal protection unit. The AP3710 is available in SOIC-8 and DIP-8 packages. - Current Mode Control with Skip Cycle Capability - Low Start-up Current: 0.25m A - Low Operating Current: 0.45m A - Output Current Capacity: 900m A - Fixed Switching Frequency: 60k Hz - Frequency Dithering for Low EMI - Under-Voltage Lockout with Hysteresis - Built-in Slope pensation - Short Circuit Protection - Open and Short Circuit Protection for Opto- Coupler - Maximum Input Power is 0.2W under No Load - Maximum Input Power is 1W under 0.5W Load - Low Total Cost Solution Applications - Adapters - Battery Chargers - Set Top Boxes - Auxiliary Supplies - DVD SOIC-8 DIP-8...