NCP3102C Datasheet, PDF (1/26 Pages) ON Semiconductor – Wide Input Voltage Synchronous Buck Converter

NCP3102C
Wide Input Voltage
Synchronous Buck Converter
The NCP3102C is a high efficiency, 10 A DC--DC 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 NCP3102C 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 NCP3102C also incorporates an externally compensated
transconductance error amplifier and a capacitor programmable
soft--start function. Protection features include programmable short
circuit protection and input under voltage lockout (UVLO). The
NCP3102C is available in a 40--pin 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 Soft--Start
 85% Max Duty Cycle
 Input Undervoltage Lockout
 Resistor Programmable Current Limit
 These are Pb--Free Devices
Applications
 Servers / Networking
 DSP and FPGA Power Supply
 DC--DC Regulator Modules
http://onsemi.com
MARKING
DIAGRAM
1 40
A
WL
YY
WW
G
QFN40, 6x6
NCP3102C
CASE 485AK _AWLYYWWG
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb--Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 24 of this data sheet.
D1
CBST
CPHS BST
CIN
PWRVCC PWRPHS
PWRVCC
EP
VCC
PWRPHS
(EP)
PWRGND
CVCC
PWRGND
BG
(EP)
COMP/DIS
RSET
CP
FC
AGND
(EP)
FB
AGND
CC
LO
CO
100
95
90
85
R1
80
75
70
65
R2
60
55
V_IN = 5.0 V
V_IN = 12 V
Figure 1. Typical Application Diagram
50
01 2 3 4 5 6 7 8
I_OUT (A)
Figure 2. Efficiency
9 10
 Semiconductor Components Industries, LLC, 2011
1
February, 2011 -- Rev. 0
Publication Order Number:
NCP3102C/D