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AP3417C

Document number: DS36516 Rev. 1 - 0

1 of 11

www.diodes.com

September 2013

P3417C

PRELIMINARY DATASHEET

Product Line o

Diodes Incorporated

1.5MHZ SYNCHRONOUS STEP-DOWN DC-DC CONVERTER

Description

The AP3417C is a high efficiency step-down DC-DC voltage

converter. The chip operation is optimized by peak-current mode

architecture with built-in synchronous power MOSFET switchers. The

oscillator and timing capacitors are all built-in providing an internal

switching frequency of 1.5MHz that allows the use of small surface

mount inductors and capacitors for portable product implementations.

Integrated Soft Start (SS), Under Voltage Lock Out (UVLO), Thermal

Shutdown Detection (TSD) and Short Circuit Protection are designed

to provide reliable product applications.

The device is available in adjustable output voltage version ranging

from 0.6V to 0.9×V

when input voltage range is from 2.5V to 5.5V,

and is able to deliver up to 1A. It is also available in fixed voltage

versions of 1.2V, 1.8V and 3.3V without external feedback resistance.

The AP3417C is available in SOT-23-5 and DFN-2×2-6 packages.

Features

 High Efficiency Buck Power Converter

 Wide Input Voltage Range: 2.5V to 5.5V

 Adjustable Output Voltage: 0.6V to 0.9×V

 Low R

DS(ON)

Internal Switches:200m (V

= 5V)

 Built-in Power Switches for Synchronous Rectification with High

Efficiency

 Output Current: 1.0A

 Feedback Voltage: 600mV

 1.5MHz Constant Frequency Operation

 Thermal Shutdown Protection

 Low Dropout Operation at 100% Duty Cycle

 No Schottky Diode Required

 Input Over Voltage Protection

 Output Over Voltage Protection

 Over Current Protection

Pin Assignments

K Package DN Package

(SOT-23-5) (DFN-2×2-6)

GND

VIN

Applications

 Post DC-DC Voltage Regulation

 PDA and Notebook Computer

Typical Applications Circuit

For ADJ Version

1 2 3 4 5 6 ... 10 11

Indice de contenidos

Pagina 1 - For ADJ Version

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Pagina 2 - Component Guide

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Pagina 3 - B for DFN-2×2-6

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Pagina 4

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Pagina 5 - Efficiency (%)

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Pagina 6

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Pagina 7 - SOT-23-5

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Pagina 8 - DFN-2×2-6

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Pagina 9

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Pagina 11 - Diodes Incorporated

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