AP3005 Datasheet | BCD Semiconductor

Data Sheet 2A 420k Hz PWM BUCK DC-DC CONVERTER General Description The AP3005 is a 420k Hz fixed frequency PWM buck (step-down) DC-DC converter, capable of driving a 2A load with high efficiency, low ripple and excellent line and load regulation. The device includes a voltage reference, an oscillation circuit, an error amplifier, an internal PMOS and etc. The PWM control circuit is able to adjust the duty ratio linearly from 0 to 100%. The enable function, over current protection function, short circuit protection function and soft-start function are built inside. When OCP or SCP happens, the operation frequency will be reduced from 420k Hz to 40k Hz. An internal pensation block is employed to minimize external ponents. The AP3005 serves as an ideal power supply unit for portable devices, especially for chip set power in portable systems. It’s widely used for PDVD, LCD monitor and DPF chip set powers. Features - 2A Constant Output Current - 130mΩ RDSON Internal Power MOSFET Switch - Up to 94% Efficiency - Fixed 420k Hz Frequency - Wide 4.75V to 25V Input Voltage Range - Output Voltage Adjustable from 0.8V to 21V - Built in Thermal Shutdown Function - Built-in Current Limit Function - Built-in Soft-Start Function - Support Ceramic or Electrolytic Capacitors Applications - Portable DVD - LCD Monitor/LCD TV - Digital Photo Frame - ADSL - Set-up Box The AP3005 is available in SOIC-8 package. Mar. 2011 Rev. 1. 4 SOIC-8 Figure 1. Package Type of AP3005 BCD Semiconductor Manufacturing Limited 1 2A 420k Hz PWM BUCK DC-DC CONVERTER Pin Configuration M Package...