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NCP3120

Description
Dual 2.0 A, Step-Down DC/DC Switching Regulator
CategoryPower/power management    The power supply circuit   
File Size2MB,41 Pages
ManufacturerON Semiconductor
Websitehttp://www.onsemi.cn
Download Datasheet Parametric View All

NCP3120 Overview

Dual 2.0 A, Step-Down DC/DC Switching Regulator

NCP3120 Parametric

Parameter NameAttribute value
MakerON Semiconductor
Parts packaging codeQFN
package instructionHVQCCN,
Contacts32
Reach Compliance Codecompli
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage13.2 V
Minimum input voltage4.5 V
Nominal input voltage12 V
JESD-30 codeS-XQCC-N32
length5 mm
Number of functions1
Number of terminals32
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current4.2 A
Package body materialUNSPECIFIED
encapsulated codeHVQCCN
Package shapeSQUARE
Package formCHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Certification statusNot Qualified
Maximum seat height1 mm
surface mountYES
Switch configurationBUCK
Maximum switching frequency862.5 kHz
Temperature levelINDUSTRIAL
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationQUAD
width5 mm
NCP3120
Dual 2.0 A, Step-Down
DC/DC Switching Regulator
The NCP3120 is a dual buck converter designed for low voltage
applications requiring high efficiency. This device is capable of
producing an output voltage as low as 0.8 V. The NCP3120 provides
dual 2.0 A switching regulators with an adjustable 200 kHz
750 kHz
switching frequency. The switching frequency is set by an external
resistor. The NCP3120 also incorporates an auto−tracking and
sequencing feature. Protection features include cycle−by−cycle
current limit and undervoltage lockout (UVLO). The NCP3120 comes
in a 32−pin QFN package.
Features
http://onsemi.com
MARKING DIAGRAM
1
1
32
NCP3120
AWLYYWWG
G
Input Voltage Range from 4.5 V to 13.2 V
12 V
in
to 5.0 V
out
= 87% Efficiency Min @ 2.0 A
200−750 kHz Operation
Stable with Low ESR Ceramic Output Capacitor
0.8
±1.5%
FB Reference Voltage
External Soft−Start
Out of Phase Operation of OUT1 & OUT2
Auto−Tracking and Sequencing
Enable/Disable Capability
Hiccup Overload Protection
Low Shutdown Power (I
q
< 100
mA)
QFN32
CASE 488AM
NCP3120 = Specific Device Code
A
= Assembly Location
WL
= Wafer Lot
YY
= Year
WW
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 40 of this data sheet.
Typical Applications
Set−Top Boxes, Portable Applications, Networking and
Telecommunications
DSP/mP/FPGA Core
VIN
RVIN
FB1
R_TRACK
PG1
Enable
Disable
Enable
Disable
EN2
PG2
EN1
R14
R24
C3
AVIN
GND
PG1
PG2
EN1
SEQ1
EN2
SEQ2
COMP2
COMP1
AGND
AGND
TRACK1,2
FB2
RT
SW2
SS1
OUT1
SW1
L11
D11
GND
VIN
C1
GND
L21
D21
C12
C22
R23
R13
C13
GND
GND
R22
GND
GND
C2
GND
R12
GND
OUT2
GND
R11
C11
NCP3120
GND
SS2
R21
C21
RT
GND
C23
GND
GND
Figure 1. Typical Application Circuit
©
Semiconductor Components Industries, LLC, 2010
October, 2010
Rev. 2
1
Publication Order Number:
NCP3120/D
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