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AP5101

Diodes Incorporated
Part Number AP5101
Manufacturer Diodes Incorporated
Description 1.5A Step-Down Converter
Published Jul 28, 2010
Detailed Description www.DataSheet4U.com AP5101 1.5A Step-Down Converter with 1.4MHz Switching Frequency Description The AP5101 is a curren...
Datasheet PDF File AP5101 PDF File

AP5101
AP5101

Overview
www.
DataSheet4U.
com AP5101 1.
5A Step-Down Converter with 1.
4MHz Switching Frequency Description The AP5101 is a current mode step-down converter with a built-in power MOSFET to enable smallest solution size power conversion.
With the low series resistance power switch it enables a constant output current of up to 1.
5A over a wide input supply range.
The load and line regulation has excellent response time over the operating input voltage and temperature range.
Pin Assignments ( Top View ) SW 1 8 7 6 5 GND BST COMP FB IN 2 EN GND 3 4 NEW PRODUCT The AP5101 is self protected, through a cycle-by-cycle current limiting algorithm and an on chip thermal protection.
The AP5101 will provide the voltage conversion with a low count of widely available standard external components.
The AP5101 is available in SO-8 package.
SO-8 Features • • • • • • • • • • • • VIN 4.
75 to 22V 1.
5A Peak Output Current Stable with Low ESR Ceramic Output Capacitors External compensation Up to 92% Efficiency 0.
1µA Shutdown Mode Fixed 1.
4MHz Frequency Thermal Shutdown Cycle-by-Cycle Over Current Protection Output Adjustable from 0.
81V to 15V SO-8: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/ RoHS Compliant (Note 1) Applications • • • • Distributed Power Systems Battery Charger Pre-Regulator for Linear Regulators WLED Driver Note: 1.
EU Directive 2002/95/EC (RoHS).
All applicable RoHS exemptions applied.
Please visit our website at http://www.
diodes.
com/products/lead_free.
html.
Typical Application Circuit Input 4.
75V to 22V C1 2 IN BST SW C4 7 1 L1 Output 3.
3V 1.
5A ON OFF 3 EN AP5101 5 FB GND COMP R1 D1 4,8 6 C3 R3 R2 C2 Figure 1 Typical Application Circuit AP5101 Document number: DS32258 Rev.
1 - 2 1 of 15 www.
diodes.
com July 2010 © Diodes Incorporated www.
DataSheet4U.
com AP5101 1.
5A Step-Down Converter with 1.
4MHz Switching Frequency Typical Application Circuit (continiued) C4 10nF Input 4.
75V to 22V C1 10uF/25V CERAMIC R4 100k 2 IN EN 7 BST S...


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