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AP4320

Constant Voltage and Constant Current Controller

Datasheet

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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.

Feature(s)

Constant Voltage and Constant Current Control
Low External Component Count
Easy Compensation
Low Supply Current: 190µA
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
Halogen and Antimony Free. “Green” Device

Application(s)

AC/DC Adapters
Battery Chargers
LED Drivers

Product Specifications

Product Parameters

Constant VoltageReference Tolerance (%)	±0.5 %
ReferenceVoltage (V)	2.5 V
V_{SENSE (mV)}	30/50 mV
V_CC Maximum Rating	38
SupplyCurrent (mA)	0.19 mA

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2568	2022-03-29	2022-03-29	Qualified Additional Assembly & Test (A/T) Sites, Bill of Material, and updated Data Sheets for Package Outline Dimension Change
PCN-2514	2021-03-09	2021-06-09	Additional Wafer Source JKFAB