GR8323N 4-Channel Supervisor IC for Power Supply with OCP & OTP Protections Features Description Over-voltage protection and lockout for 3.3V, The GR8323N is designed to monitor the outputs of 5V, and two 12V power supplies switching power supply and generates the power Under-voltage protection and lockout for 3.3V, good signal to inform the system. It provides 5V, and two 12V power supplies over-voltage protection, under-voltage protection, Over-current protection and lockout for 3.3V, over-current protection, and power good signal 5V and two 12V power supplies generating. The over-voltage protection (OVP) and Open drain output for PGO and FPO/ pins under-voltage protection (UVP) monitor 3.3V, 5V 300mS power good delay and two 12V to protect the power supply and system. 75mS delay for under voltage and over current Over-current protection (OCP) monitors IS33, IS5, protection IS12A, IS12B input current sense. An adjustable 38mS for PSON/ de-bounce over-current trip point composed of Iref and a setting 73uS width noise de-glitches resistor help users design the OCP easily. The over- Wide power supply voltage range temperature protection (OTP) input has hysteresis Special care for AC power off function. GR8323N will shutdown in OTP condition. Programmable over-temperature protection The power-good feature issues a power-good signal when the output is ready therefore, the GR8323N Applications provides a reliable power supply environment for the PC power supply system. LCD TV power supply Ordering and Marking Information GR8323N Package Code RoHS Code J: DIP-16 G: Green (Halogen Free) Device K: SOP-16 DIP-16/SOP-16 GR8323N X X XXX Serial No. Code 1 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. Grenergy OPTO Inc. 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. 2010.03 Ver. 1.01 Copyright Grenergy OPTO, Inc. www.grenergy-ic.com 1 GR8323N Pin Configuration Top View PGI 1 16 PGO GND 2 15 VCC 3 14 VS5 FPO/ PSON/ 4 13 VS33 IS12A 5 12 VS12A RI IS33 6 11 IS12B 7 10 IS5 VS12B 8 9 OTP Pin Descriptions Pin No Name I/O Description 1 PGI I Power good input pin 2 GND Ground 3 FPO/ O Fault protection output pin, open drain output 4 PSON/ I ON/OFF control input pin 5 IS12A I 12V over current protection sense input 6 RI I Reference current setting adjust input 7 IS12B I 12V over current protection sense input 8 VS12B I 12V over/under voltage sense input 9 OTP I Over temperature protection input pin 10 IS5 I 5V over current protection sense input 11 IS33 I 3.3V over current protection sense input 12 VS12A I 12V over/under voltage sense input 13 VS33 I 3.3V over/under voltage sense input 14 VS5 I 5V over/under voltage sense input 15 VCC I Power supply 16 PGO O Power good output signal pin, open drain output 2010.03 Ver. 1.01 Copyright Grenergy OPTO, Inc. www.grenergy-ic.com 2