Diodes AP4320 Manuel d'utilisateur télécharger pdf

AP4320

Document number: DS36786 Rev. 2 - 2

1 of 11

www.diodes.com

December 2013

AP4320

A Product Line of

Diodes Incorporated

CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER

Description

The AP4320 is a highly integrated solution for a constant

voltage/constant current mode SMPS application.

The AP4320 contains one 2.5V voltage reference and two operational

amplifiers. The 2.5V voltage reference, combined with one

operational amplifier, makes of an ideal voltage controller for use in

adapters and battery chargers. The low voltage reference, combined

with another operational amplifier, makes of an ideal current limiter for

output low side current sensing.

The AP4320 is available in SOT26 package.

Features

 Constant Voltage and Constant Current Control

 Low External Component Count

 Easy Compensation

 Low Supply Current: 190A

 Precision Internal Voltage Reference: 2.5V

 Operating Supply Voltage: 3.5V to 36V

 Low Current Sense Threshold: 30mV/50mV

 Totally Lead-free & Fully RoHS Compliant (Note 1 & 2)

 Halogen and Antimony Free. “Green” Device (Note 3)

Pin Assignments

(Top View)

3 4

Pin 1 Mark

SENSE

GND

CTRL

OUT

SOT26 (K6 Package)

Applications

 AC/DC Adapters

 Battery Chargers

 LED Drivers

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

Typical Applications Circuit

OUT

GND

SENSE

CTRL

primary

OUT

Load

CTRL

AP4320

2.5V

(Optional)

OP1

OP2

Typical Application 1

REFOUT





SENSE

itCurrentLim 

1 2 3 4 5 6 ... 10 11

Résumé du contenu

Page 1 - SOT26 (K6 Package)

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Page 3 - Functional Block Diagram

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Page 6 - Ambient Temperature (

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Page 8 - Marking Information

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Page 9 - 1.700(0.067)

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Page 11 - Diodes Incorporated

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