AP1520 Datasheet | Diodes Incorporated

Features - - - - - - - - - Input Voltage: 3.6V to 23V Output Voltage: 0.8V to VCC Duty Ratio: 0% to 100% PWM Control Oscillation Frequency: 300KHz typ. Soft-Start, Current Limit, Enable Function Thermal Shutdown Function Built-in Internal SW P-Channel MOS SOP-8L Pb-Free Package Lead Free Finish/Ro HS pliant (Note 1) General Description AP1520 consists of step-down switching regulator with PWM control. These devices include a reference voltage source, oscillation circuit, error amplifier, and internal PMOS. AP1520 provides low-ripple power, high efficiency, and excellent transient characteristics. The PWM control circuit is able to vary the duty ratio linearly from 0 up to 100%. This converter also contains an error amplifier circuit as well as a soft-start circuit that prevents overshooting at startup. An enable function, an over current protect function and a short circuit protect function are built inside, and when OCP or SCP happens, the operation frequency will be reduced from 300KHz to 30KHz. Also, an internal pensation block is built in to minimum external ponent count. With the addition of an internal P-channel Power MOS, a coil, capacitors, and a diode connected externally, these ICs can function as step-down switching regulators. They serve as ideal power supply units for portable devices when coupled with the SOP- 8L mini-package, providing such outstanding features as low current consumption. Since this converter can acmodate an input voltage up to 23V, it is also suitable for the operation via an AC adapter. Applications - - - - - - - - - PC Motherboard LCD Monitor Graphic Card DVD-Video Player Tele Equipment ADSL Modem Printer and other Peripheral Equipment Microprocessor Core Supply Networking Power Supply Ordering Information AP 1520 X X X Package S : SOP-8L Lead-Free L : Lead- Free Packing -U : Tube -13 : Taping Note: 1. Ro HS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device...