AP3001 Datasheet | BCD Semiconductor

Preliminary Datasheet 150k Hz 3A PWM BUCK DC-DC CONVERTER General Description The AP3001 series of regulators are fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3A load with excellent line and load regulation. These regulators are simple to use and include internal frequency pensation and a fixed frequency oscillator, so that a system adopting AP3001 requires a minimum number of external ponents to work. These ICs are available in TO-220-5L, TO-220B-5L and TO-263-5L packages. Features - - - - - - - 3.3V, 5V Fixed and Adjustable Output Versions Guaranteed 3A Output Load Current 150k Hz Fixed Frequency Internal Oscillator Excellent Line and Load Regulation TTL Shutdown Capability Low Power Standby Mode, IQ Typically 80µA Built-in Current Limit Protection and Thermal Shutdown Circuit Applications - - - - LCD Monitor and LCD TV On-Card DC-DC Converter DVD Recorder PDP .. TO-220-5L TO-220B-5L TO-263-5L Figure 1. Package Types of AP3001 Jul. 2006 Rev. 1. 3 1 BCD Semiconductor Manufacturing Limited Preliminary Datasheet 150k Hz 3A PWM BUCK DC-DC CONVERTER Pin Configuration T/TB Package (TO-220-5L/TO-220B-5L) S Package (TO-263-5L) 5 4 3 2 1 ON/OFF FEEDBACK GND OUTPUT VIN 5 4 3 2 1 ON/OFF FEEDBACK GND OUTPUT VIN Figure 2. Pin Configuration of AP3001 (Top View) Pin Description Pin Number 1 2 3 4 Pin Name VIN OUTPUT GND FEEDBACK Unregulated input voltage Switch driver output Ground Feedback pin. For fixed version, connect it to system output. For adjustable version, connect it with an external resistor divider to program the system output voltage The TTL logic patible input to control the regulator on or off Function ON/OFF Jul. 2006 Rev. 1. 3 2 BCD Semiconductor Manufacturing Limited Preliminary Datasheet 150k Hz 3A PWM BUCK DC-DC CONVERTER Functional Block...