AP4320AK6TR-G1 Diodes Incorporated

A Product Line of Diodes Incorporated AP4320 CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER Description Pin Assignments The AP4320 is a highly integrated solution for a constant (Top View) voltage/constant current mode SMPS application. The AP4320 contains one 2.5V voltage reference and two operational Pin 1 Mark 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 V 6 V SENSE 1 CC with another operational amplifier, makes of an ideal current limiter for output low side current sensing. GND 5 2 V OUT The AP4320 is available in SOT26 package. V I CTRL CTRL 3 4 Features Constant Voltage and Constant Current Control SOT26 (K6 Package) Low External Component Count Easy Compensation Low Supply Current: 190 A Applications Precision Internal Voltage Reference: 2.5V Operating Supply Voltage: 3.5V to 36V AC/DC Adapters Low Current Sense Threshold: 30mV/50mV Battery Chargers Totally Lead-free & Fully RoHS Compliant (Note 1 & 2) LED Drivers Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See A Product Line of Diodes Incorporated AP4320 Typical Applications Circuit (Cont.) V + OUT To primary R2 I L AP4320 6 2.5V V CC R4 C1 R3 V 5 OUT OP1 + + V CTRL Load 3 C3 OP2 GND 2 R5 I V CTRL SENSE R1 1 4 C2 (Optional) R6 V - OUT R SS R1 R2 V SENSE CurrentLimit V V (I R ) (I R ) O REF L SS L SS UT R R1 SS Typical Application 2 V + OUT To primary R2 I AP4320 L 6 2.5V V CC R4 C1 R3 V OUT 5 OP1 + + V Load CTRL 3 C3 OP2 2 GND R5 I V CTRL SENSE R1 4 1 C2 R6 (Optional) V - OUT R SS R1 R2 V V SENSE REF V V (I R ) CurrentLimit OUT REF L SS V V R R1 SENSE REF SS Typical Application 3 2 of 11 AP4320 December 2013 Diodes Incorporated www.diodes.com Document number: DS36786 Rev. 2 - 2