GR1210 Multi-Mode PWM Controller with Primary-Side Feedback Features Description Low Start-Up Current (<2uA) The GR1210 is a high performance primary side Primary-Side Feedback Control with Multi-Mode feedback controller with multi-mode (QR/CCM) Operation operation for flyback converter. It minimizes the CCM Heavy Load and Low Line components counts and is available in a tiny QR-Like Operation Medium Load SOT-26 package. Those make it an ideal design for Green mode with Valley Skip at Light Load low cost application. It provides functions of low PFM Mode at No Load startup current, green- mode power-saving Built-In Adjustable Load Regulation operation, VCC over-voltage protection, and FB pin Compensation abnormal conditions sensing to prevent the circuit Constant Voltage/Constant Current Operation being damaged from the abnormal conditions. Output Short Protection FB Pin Open/Short Protection Applications Soft Driver Mobile Phone Adapter 8ms Soft-start Lower Power AC/DC Adapter OVP (Over Voltage Protection) on Vcc Pin On Chip OTP Protection SOT-26 Package with Few External Components Needed Typical Application Information EMI FILTER * FB VCC GR1210 * OUT GND COMP CS *Option 2018.01. Ver.1.0 Copyright Nanjing Greenchip Semiconductor Co., Ltd. www.grenergy-ic.com 1 GR1210 Ordering and Marking Information GR1210 Package Code RoHS Code G: Green (Halogen Free) Device C: SOT-26 SOT-26 Code C10X 1 X XXX Serial No. Code 2 Code 1 8 9 A B G H I J Year 2008 2009 2010 2011 2016 2017 2018 2019 Code 2 1 2 3 4 9 A B C Month Jan. Feb. Mar. Apr. Sep. Oct. Nov. Dec. Nanjing Greenchip Semiconductor Co., Ltd. reserves the right to make changes to improve reliability or manufacture ability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Pin Configuration SOT-26 (TOP VIEW) 1 6 OUT GND COMP 2 5 VCC FB 3 4 CS Pin Description Pin No. Name Function 1 GND Ground reference pin. 2 COMP Output of the error amplifier for voltage compensation. 3 FB This pin is for quasi-resonant detection and feedback control. Current sense pin, connected to sense resistor for sensing the MOSFET 4 CS current signal. 5 VCC Power supply pin. 6 OUT The output driver for driving the external MOSFET. 2018.01. Ver.1.0 Copyright Nanjing Greenchip Semiconductor Co., Ltd. www.grenergy-ic.com 2