AP3418 datasheet(2/12 Pages) BCDSEMI

Part #	AP3418

Description	1.5A, 1.4MHz High Efficiency Synchronous DC-DC Buck Converter

PDF	12 Pages

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Manufacturer	BCDSEMI [BCD Semiconductor Manufacturing Limited]

Direct Link	http://www.bcdsemi.com

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2 / 12 page

Data Sheet

1.5A, 1.4MHz High Efficiency Synchronous DC-DC Buck Converter

AP3418

Aug. 2012

Rev. 1. 2

BCD Semiconductor Manufacturing Limited

GND

VIN

Pin Configuration

K Package

(SOT-23-5)

Figure 2. Pin Configuration of AP3418 (Top View)

Pin Description

Pin Number

Pin Name

Function

Control input pin. Forcing this pin above 1.5V enables the IC.

Forcing this pin below 0.4V shuts down the IC. When the IC is

in shutdown mode, all functions are disabled to decrease the

supply current below 1

µA

GND

Ground pin

Power switch output pin. Inductor connection to drain of the

internal PFET and NFET switches

VIN

Supply input pin. Bypass to GND with a 4.7

µF or greater

ceramic capacitor

This is the feedback pin of the device. Connect this pin directly

to the output if the fixed output voltage version is used. For the

adjustable version, an external resistor divider is connected to

this pin

AP3418 Datasheet(PDF) 2 Page - BCD Semiconductor Manufacturing Limited