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NCP3012

ON Semiconductor
Part Number NCP3012
Manufacturer ON Semiconductor
Description Synchronous PWM Controller
Published Aug 26, 2010
Detailed Description NCP3012 Synchronous PWM Controller The NCP3012 is a PWM device designed to operate from a wide input range and is capab...
Datasheet PDF File NCP3012 PDF File

NCP3012
NCP3012

Overview
NCP3012 Synchronous PWM Controller The NCP3012 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 NCP3012 provides integrated gate drivers and an internally set 75 kHz oscillator.
The NCP3012 has an externally compensated transconductance error amplifier with an internally fixed soft−start.
The NCP3012 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° out−of−phase clock signal to drive another NCP3012 (Master Mode).
Protection features include lossless current limit and short circuit protection, output overvoltage and undervoltage protection, and input undervoltage lockout.
The NCP3012 is available in a 14−pin TSSOP package.
Features • Input Voltage Range from 4.
7 V to 28 V • 75 kHz Operation • 0.
8 V $1.
0% Reference Voltage • Buffered External +1.
25 V Reference • Current Limit and Short Circuit Protection • Power Good • Enable/Disable Pin • Input Undervoltage Lockout • External Synchronization • Output Overvoltage and Undervoltage Protection • This is a Pb−Free Device Typical Applications • Set Top Box • Power Modules • ASIC / DSP Power Supply VIN CREF CIN EN PG VCC BST HSDR VSW CBST Q1 LO VOUT VREF SYNC LSDR R ISET GND Q2 RFB1 CO RFB2 RREF COMP FB RC CC2 C C1 Figure 1.
Typical Application Circuit http://onsemi.
com 14 1 TSSOP−14 DT SUFFIX CASE 948G MARKING DIAGRAM 14 3012 ALYWG G 1 3012= Device Code A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package (Note: Microdot may be in either location) VREF EN NC SYNC PG COMP FB PIN CONNECTIONS (TOP VIEW) VCC BST HSDR VSW NC LSDR GND ORDERING INFORMATION Device Package Shipping† NCP3012DTBR2G TSSOP−14 2500 / Tape & Reel (Pb−Free) †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our...


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