NCP3011 Product Preview Synchronous PWM Controller The NCP3011 is a PWM device designed to operate from a wide input range and is capable of producing an output voltage as low as 0.8 V. The NCP3011 provides a 1.0 A gate driver and an internally set 400 kHz oscillator. The NCP3011 has an externally compensated transconductance error amplifier with an internally fixed softstart. The NCP3011 incorporates output voltage monitoring with a Power Good pin to indicate that the system is in regulation. The dual function SYNC pin synchronizes the device to a higher frequency (Slave Mode) or outputs a 180° outofphase clock signal to drive another NCP3011 (Master Mode). Protection features include lossless current limit and Short Circuit Protection, Output Overvoltage and Undervoltage Protection, and Input Undervoltage Lockout. The NCP3011 is available in a 14pin TSSOP package. http://onsemi.com 14 1 TSSOP14 DT SUFFIX CASE 948G Features • • • • • • • • • • • Input Voltage Range from 4.5 V to 28 V 400 kHz Operation 0.8 $1.0% Reference Voltage Buffered External +1.25 V Reference Current Limit and Short Circuit Protection Power Good Enable/Disable Pin Input and Output Voltage Protection External Synchronization Output Overvoltage and Undervoltage Protection This is a PbFree Device MARKING DIAGRAM 14 NCP3011 ALYW 1 NCP3011 A L Y W Typical Applications PIN CONNECTIONS • Set Top Box • Power Modules • ASIC / DSP Power Supply VREF EN BST LO VREF LSDR SYNC GND Q2 COMP C REF RC (TOP VIEW) CO ORDERING INFORMATION RFB2 Device FB Package Shipping† NCP3011DTBR2G TSSOP14 (PbFree) 2500/Tape&Reel C C1 CC2 Figure 1. Typical Application Circuit This document contains information on a product under development. ON Semiconductor reserves the right to change or discontinue this product without notice. © Semiconductor Components Industries, LLC, 2009 October, 2009 Rev. P1 GND RFB1 R ISET RREF LSDR VOUT VSW PG NC COMP FB Q1 HSDR HSDR VSW PG CBST VCC VCC BST EN NC SYNC VIN 4.5 28 V CIN = Device Code = Assembly Location = Wafer Lot = Year = Work Week 1 †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Publication Order Number: NCP3011/D