NCP3101 Datasheet, PDF (1/18 Pages) ON Semiconductor – Wide Input Voltage Synchronous Buck Converter

NCP3101
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Wide Input Voltage
Synchronous Buck Converter
The NCP3101 is a high efficiency, wide input, high output current,
synchronous PWM buck converter designed to operate from a 4.5 V to
13.2 V supply. The device is capable of producing an output voltage as
low as 0.8 V. The NCP3101 can continuously output 6 A through
MOSFET switches driven by an internally set 275 kHz oscillator. The
40-pin device provides an optimal level of integration to reduce size
and cost of the power supply. The NCP3101 also incorporates an
externally compensated transconductance error amplifier and a
capacitor programmable soft-start function. Protection features include
programmable short circuit protection and under voltage lockout
(UVLO). The NCP3101 is available in a 40-pin QFN package.
Features
•ăInput Voltage Range from 4.5 V to 13.2 V
•ă275 kHz Internal Oscillator
•ăGreater than 90% Maximum Efficiency
•ăBoost Pin Operates to 25 V
•ăVoltage Mode PWM Control
•ă0.8 V $1% Internal Reference Voltage
•ăAdjustable Output Voltage by Resistor Divider
•ăCapacitor Programmable Soft-Start
•ă80% Maximum Duty Cycle
•ăInput Undervoltage Lockout
•ăResistor Programmable Current Limit
•ăThis is a Pb-Free Device
Applications
•ăServers/Networking
•ăDSP and FPGA Power Supply
•ăDC-DC Regulator Modules
Vin
Vout
PWRVCC CPHS BST
VCC
PWRPHS
NCP3101
COMP/DIS TGOUT
FB
TGIN
AGND BG PWRGND
http://onsemi.com
MARKING
DIAGRAM
1 40
QFN40, 6x6
CASE 485AK
NCP3101
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G
= Pb-Free Package
PIN CONNECTIONS
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
GND
GND
Figure 1. Typical Application Diagram
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
©Ă Semiconductor Components Industries, LLC, 2007
1
November, 2007 - Rev. P0
Publication Order Number:
NCP3101/D