参数资料
| 型号： | NCS1002DR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 1/9页 |
| 文件大小： | 0K |
| 描述： | IC CTLR CV/CC SMPS 8-SOIC |
| 标准包装： | 2,500 |
| 输出隔离： | 隔离 |
| 输入电压： | 3 V ~ 32 V |
| 工作温度： | -40°C ~ 105°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 带卷 (TR) |
| 其它名称： | NCS1002DR2G-ND NCS1002DR2GOSTR |
NCS1002
Constant Voltage / Constant
Current Secondary-Side
Controller
Description
The NCS1002 is a highly integrated solution for Switching Mode
http://onsemi.com
Power Supply (SMPS) applications requiring a dual control loop to
perform Constant Voltage (CV) and Constant Current (CC) regulation.
The NCS1002 integrates a 2.5 V voltage reference and two precision
op amps. The voltage reference, along with Op Amp 1, is the core of
the voltage control-loop. Op Amp 2 is an independent, uncommitted
amplifier specifically designed for the current control. Key external
components needed to complete the two control loops are: (a) A
resistor divider that senses the output of the power supply (battery
8
1
SOIC ? 8
D SUFFIX
CASE 751
MARKING
DIAGRAMS
8
1002
ALYW G
G
1
charger) and fixes the voltage regulation set point at the specified
A
= Assembly Location
value. (b) A sense resistor that feeds the current sensing circuit with a
voltage proportional to the DC output current. This resistor determines
the current regulation set point and must be adequately rated in terms
of power dissipation. The NCS1002 comes in a small 8 ? pin SOIC
package and is ideal for space-shrunk applications such as battery
chargers.
Features
? Low Input Offset Voltage: 0.5 mV, Typ
? Input Common-Mode Range includes Ground
? Low Quiescent Current: 300 m A per Op Amp at V CC = 5 V
? Large Output Voltage Swing
? Wide Power Supply Range: 3 V to 32 V
? High ESD Protection: 2 kV
? These are Pb ? Free Devices
L = Wafer Lot
Y = Year
W = Work Week
G = Pb ? Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
Out 1 1 8 V CC
In 1 ? 2 7 Out 2
In 1+ 3 6 In 2 ?
GND 4 5 In 2+
(Top View)
Typical Applications
? Battery Chargers
? Switch Mode Power Supplies
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
? Semiconductor Components Industries, LLC, 2012
December, 2012 ? Rev. 2
1
Publication Order Number:
NCS1002/D
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| NCS12802MNTXG | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
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