参数资料
| 型号： | NCP345SNT1 |
| 厂商： | ON Semiconductor |
| 文件页数： | 2/8页 |
| 文件大小： | 0K |
| 描述： | IC OVERVOLT PROT CTRLR 5TSOP |
| 产品变化通告： | Product Obsolescence 21/Jan/2010 |
| 标准包装： | 1 |
| 电压 - 工作： | 3 ~ 25V |
| 电压 - 箝位： | 7.08V |
| 技术： | 混合技术 |
| 功率（瓦特）： | 216mW |
| 电路数： | 1 |
| 应用： | 通用 |
| 封装/外壳： | 6-TSOP（0.059"，1.50mm 宽）5 引线 |
| 供应商设备封装： | 5-TSOP |
| 包装： | 剪切带 (CT) |
| 其它名称： | NCP345SNT1OSCT |
NCP345
V CC
(5)
IN
(4)
V CC
Pre?
V5
regulator
R1
?
+
?
+
COMP
R3
UVLO
LOGIC
BLOCK
V CC
ON/OFF
DRIVER
OUT
OUT
(1)
R2
R4
Bandgap
Reference
CNTRL
(3)
GND
(2)
Figure 2. Detailed Block Diagram
PIN FUNCTION DESCRIPTIONS
Pin #
1
2
3
4
5
Symbol
OUT
GND
CNTRL
IN
V CC
Pin Description
This signal drives the gate of a P?channel MOSFET. It is controlled by the voltage level on IN or the logic state
of the CNTRL input. When an overvoltage event is detected, the OUT pin is driven to within 1.0 V of V CC in
less than 1.0 m sec provided that gate and stray capacitance is less than 12 nF.
Circuit Ground
This logic signal is used to control the state of OUT and turn?on/off the P?channel MOSFET. A logic High
results in the OUT signal being driven to within 1.0 V of V CC which disconnects the FET. If this pin is not used,
the input should be connected to ground.
This pin senses an external voltage point. If the voltage on this input rises above the overvoltage threshold
(VTH), the OUT pin will be driven to within 1.0 V of V CC , thus disconnecting the FET. The nominal threshold
level is 6.85 V and this threshold level can be increased with the addition of an external resistor between IN
and V CC .
Positive Voltage supply. If V CC falls below 2.8 V (nom), the OUT pin will be driven to within 1.0 V of V CC , thus
disconnecting the P?channel FET.
TRUTH TABLE
IN
<V th
<V th
>V th
>V th
CNTRL
L
H
L
H
OUT
GND
V CC
V CC
V CC
http://onsemi.com
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP345SNT1G | 功能描述:监控电路 6.85V OVP Supervisor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| NCP346SN1EVB | 功能描述:电源管理IC开发工具 ANA NCP346 EVAL BD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| NCP346SN1T1G | 功能描述:监控电路 4.45V Overvoltage Supervisor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| NCP346SN2T1G | 功能描述:监控电路 5.5V Overvoltage Supervisor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| NCP347AE AV51D WAF | 制造商:ON Semiconductor 功能描述: |
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