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AP3005

BCD Semiconductor
Part Number AP3005
Manufacturer BCD Semiconductor
Description 2A 420kHz PWM BUCK DC-DC CONVERTER
Published Aug 17, 2015
Detailed Description Data Sheet 2A 420kHz PWM BUCK DC-DC CONVERTER AP3005 General Description The AP3005 is a 420kHz fixed frequency PWM b...
Datasheet PDF File AP3005 PDF File

AP3005
AP3005

Overview
Data Sheet 2A 420kHz PWM BUCK DC-DC CONVERTER AP3005 General Description The AP3005 is a 420kHz 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 420kHz to 40kHz.
An internal compensation block is employed to minimize external components.
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 420kHz 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 420kHz PWM BUCK DC-DC CONVERTER Pin Configuration M Package (SOIC-8) Data Sheet AP3005 NC 1 VIN 2 SW 3 GND 4 8 NC 7 EN 6 COMP 5 FB Figure 2.
Pin Configuration of AP3005 (Top View) Pin Description Pin Number Pin Name Function 1, 8 NC No Connection Supply Voltage Input Pin.
The AP3005 operates from a 4.
75V to 25V DC 2 VIN voltage.
Bypass VIN to GND with a suitable large capacitor to eliminate noise on the input 3 SW Power Switch Output Pin.
SW is the swi...


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