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ON Semiconductor - Wide Input Voltage Synchronous Buck Converter

Numéro de référence NCP3101C
Description Wide Input Voltage Synchronous Buck Converter
Fabricant ON Semiconductor 
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NCP3101C fiche technique
NCP3101C
Wide Input Voltage
Synchronous Buck Converter
The NCP3101C is a high efficiency, 6 A DCDC buck converter
designed to operate from a 5 V to 12 V supply. The device is capable
of producing an output voltage as low as 0.8 V. The NCP3101C can
continuously output 6 A through MOSFET switches driven by an
internally set 275 kHz oscillator. The 40pin device provides an
optimal level of integration to reduce size and cost of the power
supply. The NCP3101C also incorporates an externally compensated
transconductance error amplifier and a capacitor programmable
softstart function. Protection features include programmable short
circuit protection and input under voltage lockout (UVLO). The
NCP3101C is available in a 40pin QFN package.
Features
Split Power Rail 2.7 V to 18 V on PWRVCC
275 kHz Internal Oscillator
Greater Than 90% Max Efficiency
Boost Pin Operates to 35 V
Voltage Mode PWM Control
0.8 V $1% Internal Reference Voltage
Adjustable Output Voltage
Capacitor Programmable SoftStart
85% Max Duty Cycle
Input Undervoltage Lockout
Resistor Programmable Current Limit
These are PbFree Devices
Applications
Servers / Networking
DSP and FPGA Power Supply
DCDC Regulator Modules
D1
CBST
CPHS BST
CIN PWRVCC PWRPHS
PWRVCC
EP
VCC
PWRPHS
(EP)
PWRGND
CVCC
BG
COMP/DIS
PWRGND
(EP)
RSET
CP FC
AGND
(EP)
FB
AGND
CC
LO
CO
100
95
90
85
R1 80
75
70
65
R2 60
55
50 0
Figure 1. Typical Application Diagram
http://onsemi.com
MARKING
DIAGRAM
1 40
QFN40, 6x6
CASE 485AK
NCP3101C
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = PbFree Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 24 of this data sheet.
VIN = 5 V
VIN = 12 V
VOUT = 3.3 V
123 45 6
IOUT (A)
Figure 2. Efficiency
© Semiconductor Components Industries, LLC, 2011
August, 2011 Rev. 1
1
Publication Order Number:
NCP3101C/D

PagesPages 26
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