参数资料
型号: NCP3122MNTXG
厂商: ON Semiconductor
文件页数: 1/42页
文件大小: 0K
描述: IC REG BUCK ADJ 2A DL 32QFN
产品变化通告: NCP312x Soft Start Charge 6/Nov/2008
标准包装: 4,000
类型: 降压(降压)
输出类型: 可调式
输出数: 2
输出电压: 可调至 0.8V
输入电压: 4.5 V ~ 15 V
频率 - 开关: 200kHz ~ 2.2MHz
电流 - 输出: 2A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 32-QFN(5x5)
NCP3122
Dual 2.0 A, Step-Down
DC/DC Switching Regulator
The NCP3122 is a dual buck converter designed for low voltage
applications requiring high efficiency. This device is capable of
G
producing an output voltage as low as 0.8 V. The NCP3122 provides
dual 2.0 A switching regulators with an adjustable 200 kHz ? 2200
kHz switching frequency. The switching frequency is set by an
external resistor. The NCP3122 also incorporates an auto ? tracking
and sequencing feature. Protection features include cycle ? by ? cycle
current limit and undervoltage lockout (UVLO). The NCP3122 comes
in a 32 ? pin QFN package.
Features
? 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 ? 2200 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 m A)
http://onsemi.com
MARKING DIAGRAM
1
NCP3122
1 32 AWLYYWW G
QFN32
CASE 488AM
NCP3122 = 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 41 of this data sheet.
Typical Applications
? Set ? Top Boxes, Portable Applications, Networking and
Telecommunications
? DSP/ m P/FPGA Core
VIN
RVIN
Disable
Disable
R_TRACK
PG1
PG2
Enable
EN1
Enable
EN2
R14
R24
C3
GND
PG1
PG2
EN1
SEQ1
EN2
SEQ2
NCP3122
SW1
VIN
C1
L11
D11
GND
C2
R11
R12
GND
OUT1
C11
GND
TRACK1,2
SW2
GND
GND
OUT2
L21
D21
R21
C21
RT
C22
C12
GND
R22
GND
R23
R13
GND
GND
C23
GND
C13
GND GND
Figure 1. Typical Application Circuit
? Semiconductor Components Industries, LLC, 2010
October, 2010 ? Rev. 2
1
Publication Order Number:
NCP3122/D
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