AP4306BUKTR-G1 Diodes Incorporated

A Product Line of Diodes Incorporated AP4306 CONSTANT VOLTAGE AND CONSTANT CURRENT CONTROLLER Description Pin Assignments The AP4306 is a highly integrated solution for a constant voltage/constant current mode SMPS application. (Top View) The AP4306 contains one 1.21V voltage reference, one low voltage reference used in current sensing circuit and two operational Pin 1 Mark amplifiers. The 1.21V 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 CTRL V 1 6 CC with another operational amplifier, makes of an ideal current limiter for output low side current sensing. GND 5 V 2 SENSE The AP4306 is fully compatible with AP4305 in functionality and electrical characteristics except its lower reference voltage for current V 3 4 I OUT CTRL control loop, thus higher power efficiency in SMPS applications such as low power charger can be realized with AP4306 compared to AP4305. SOT26 (K Package) The AP4306 is available in SOT26 package. Features Applications Constant Voltage and Constant Current Control Adapters Precision Internal Voltage Reference Battery Chargers Low External Component Count Easy Compensation Low Supply Current: 0.5mA Current Control Loop Reference A Version: 70mV B Version: 100mV C Version: 150mV o Operating Temperature Range: -40 to +105 C Operating Supply Voltage: 2.5V to 18V Totally Lead-free & Fully RoHS Compliant (Note1 & 2) 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 AP4306 Typical Applications Circuit V + OUT To primary R2 I AP4306 L V CC R4 C1 1.210V R3 V OUT + + V Load CTRL C3 GND R5 I V CTRL SENSE R1 R6 500 V - OUT R SS V SENSE R1 R2 CurrentLimit V V OUT REF R SS R1 Typical Application 1 V + OUT To primary R2 I AP4306 L V CC R4 1.210V C1 R3 V OUT + + V CTRL Load C3 GND R5 I V CTRL SENSE R1 R6 500 V - OUT R SS R1 R2 V SENSE V [V (I R )] (I R ) CurrentLimit OUT REF L SS L SS R1 R SS Typical Application 2 2 of 11 AP4306 January 2014 Diodes Incorporated www.diodes.com Document number: DS36792 Rev. 2 - 2