NCP3102 Datasheet, PDF (1/18 Pages) ON Semiconductor – Wide Input Voltage Synchronous Buck Converter

NCP3102
Wide Input Voltage
Synchronous Buck Converter
The NCP3102 is a high efficiency, 10 A DC-DC buck converter
designed to operate from a 5 V to 13.2 V supply. The device is capable
of producing an output voltage as low as 0.8 V. The NCP3102 can
continuously output 10 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 NCP3102 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 NCP3102
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
http://onsemi.com
QFN40
CASE 485AK
MARKING
DIAGRAM
1 40
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G
= Pb-Free Package
NCP3102
AWLYYWWG
PIN CONNECTIONS
Applications
•ăServers/Networking
•ăDSP and FPGA Power Supply
•ăDC-DC Regulator Modules
Vin
PWRVCC CPHS BST
VCC
PWRPHS
NCP3102
COMP/DIS TGOUT
FB
TGIN
AGND BG PWRGND
GND
Figure 1. Typical Application Diagram
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
100
Vout
95
90
V_IN = 5.0 V
85
80
V_IN = 12 V
75
70
65
60
55
GND
50
0 1 2 3 4 5 6 7 8 9 10
OUTPUT CURRENT (A)
Figure 2. Efficiency
©Ă Semiconductor Components Industries, LLC, 2007
1
November, 2007 - Rev. 2
Publication Order Number:
NCP3102/D