AP3783RAK6TR-G1 Diodes Incorporated

AP3783R PRIMARY SIDE REGULATED SWITCHING MODE POWER SUPPLY CONTROLLER Description Pin Assignments The AP3783R is a high frequency, high efficiency and high accuracy switching mode power supply controller to drive power MOSFET for (Top View) 5V/2A battery charger/adapter applications. The controller regulates the output voltage and current in the primary side by piece-wise Pulse Frequency Modulation (p-PFM) in discontinuous conduction mode Pin 1 Mark (DCM). The system operating frequency reduces linearly from heavy load to light load in each interval of the p-PFM, and enters constant current mode when the load current equals to the maximum system CS 1 6 CPC output current. 2 5 DRI GND The AP3783R provides accurate constant voltage (CV), constant current (CC) and outstanding dynamic performance without requiring FB 3 4 VCC an opto-coupler. It also eliminates the need of loop compensation circuitry while maintaining stability. SOT26 The AP3783R provides valley turn-on function and 3-Segment drive current to improve the power supply EMI performance. The AP3783R also has built-in fixed cable voltage drop compensation (8%, 4% and Features 2% of nominal system output voltage to meet various cables with different length and gauge) and adjustable line voltage compensation. Less than 30mW Standby Power Consumption Meet Efficiency Requirement of COC Trier2 The AP3783R achieves excellent regulation and high average Valley Turn-on to Reduce Switching Loss and Improve EMI efficiency, less than 2s startup time for 30mW standby power solution. Piece-wise Frequency Reduction to Enhance Conversion When AP3783R is used with APR3415, good undershoot and Efficiency and Suppress Audio Noise efficiency performances can be achieved. Over Voltage Protection (OVP) Over Temperature Protection (OTP) The AP3783R is packaged in SOT26. Short Circuit Protection (SCP) with Hiccup 3-Segment Drive Current for Radiative EMI Suppression Operating Frequency Jitter Function for Conductive EMI Suppression Drive MOSFET for 5W to 20W Battery Charger/Adapter Applications Applications SOT26 SMD Package Comply with Level 3 of IPC/JEDEC J-STD- 033A Adapters/Chargers Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Standby and Auxiliary Power Supplies 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 AP3783R Typical Applications Circuit FR1 T1 D IN L IN C1 R1 R ST1 Np C OUT Ns + + + D1 R0 R ST2 C2 C C R2 IN1 IN2 Da Ra + U2 5V/2A Na APR3415 C VCC DRAIN GND R3 DRAIN GND R4 VDET VCC U1 CCPC C3 DRISR AREF 1 6 CS CPC Q1 C4 R FB1 R5 2 5 DRI GND 3 4 VCC FB AP3783R CY1 R FB2 R CS With APR3415 (V =5V/2A) OUT Pin Descriptions Pin Number Pin Name Function The CS is the current sense pin of the IC. The IC will turn off the power MOSFET 1 CS according to the voltage on the CS pin 2 GND The ground of the controller The VCC pin supplies the power for the IC. In order to get the correct operation of 3 VCC the IC, a capacitor with low ESR should be placed as close as possible to the VCC pin 4 FB The CV and CC regulation are realized based on the voltage sampling of this pin 5 DRI Output pin to drive external MOSFET A capacitor about 50nF should be connected to this pin. The voltage of CPC pin is 6 CPC linear to load of the system and it is used for the functions of cable voltage drop compensation and audio noise suppression 2 of 17 AP3783R March 2016 Diodes Incorporated www.diodes.com Document number: DS37448 Rev. 6 - 2