参数资料
型号: NCP3125ADR2G
厂商: ON Semiconductor
文件页数: 1/22页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 4A 8SOIC
标准包装: 1
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.8 V ~ 5 V
输入电压: 4.5 V ~ 13.2 V
PWM 型: 电压模式
频率 - 开关: 350kHz
电流 - 输出: 4A
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: 8-SOIC(0.154",3.90mm 宽)
包装: 标准包装
供应商设备封装: 8-SOICN
其它名称: NCP3125ADR2GOSDKR
NCP3125
4 A Synchronous PWM
Switching Converter
The NCP3125 is a flexible synchronous PWM Switching Buck
Regulator. The NCP3125 is capable of producing output voltages as
low as 0.8 V. The NCP3125 also incorporates voltage mode control.
To reduce the number of external components, a number of features
are internally set including switching frequency. The NCP3125 is
currently available in an SOIC ? 8 package.
http://onsemi.com
MARKING
Features
? 4.5 V to 13.2 V Operating Input Voltage Range
? 60 m W High ? Side, 36 m W Low ? Side Switches
? Output Voltage Adjustable to 0.8 V
? 4 A Continuous Output Current
? Fixed 350 kHz PWM Operation
? 1.0% Initial Output Accuracy
? 75% Max Duty Ratio
? Over ? Load Protection
? Programmable Current Limit
? This is a Pb ? Free Device
8
1
SOIC ? 8 NB
D SUFFIX
CASE 751
3125
A
L
Y
W
G
DIAGRAM
8
3125
ALYWX G
G
1
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year/
= Work Week
= Pb ? Free Package
Typical Application
? Set Top Boxes
? DVD Drives and HDD
? LCD Monitors and TVs
? Cable Modems
? Telecom / Networking / Datacom Equipment
100
PIN CONNECTIONS
PGND 1 VSW
FB ISET
COMP VIN
AGND BST
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 21 of this data sheet.
4.5 V ? 13.2 V
VIN
BST
VSW
3.3 V
95
5V
90
PGND
NCP3125
85
ISET
COMP
FB1
AGND
80
75
70
65
0
0.5
1
1.5 2 2.5 3
3.5
4
OUTPUT CURRENT (A)
Figure 1. Typical Application Circuit
Figure 2. Efficiency (V IN = 12 V) vs. Load Current
? Semiconductor Components Industries, LLC, 2011
April, 2011 ? Rev. 2
1
Publication Order Number:
NCP3125/D
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