NCP1654
http://onsemi.com
21
V
cc
Undervoltage LockOut (UVLO)
The device incorporates an Undervoltage Lockout block
to prevent the circuit from operating when Vcc is too low
in order to ensure a proper operation. An UVLO
comparator monitors V
cc
pin voltage to allow the NCP1654
to operate when V
cc
exceeds 10.5 V typically. The
comparator incorporates some hysteresis (1.5 V) to prevent
erratic operation as the V
cc
crosses the threshold. When V
cc
goes below the UVLO comparator lower threshold (9 V
typically), the circuit turns off. It is illustrated in Figure 47.
After startup, the operating range is between 9 V and 20 V.
Figure 47. V
cc
Undervoltage LockOut (UVLO)
V
CC
V
CC
I
CC
ON
OFF
State
<75 mA
V
CC(ON)
V
CC(OFF)
6 mA
Thermal Shutdown
An internal thermal circuitry disables the circuit gate
drive and then keeps the power switch off when the junction
temperature exceeds 150癈. The output stage is then
enabled once the temperature drops below typically 120癈
(i.e., 30癈 hysteresis). The thermal shutdown is provided
to prevent possible device failures that could result from an
accidental overheating.
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
NCP1927DR2G
IC CTLR PFC/FLYBACK 16-SOIC
NCP380HMU21AATBG
IC CURRENT LIMIT SWITCH 6-UDFN
NCT1008DMT3R2G
TMP DIO MON/SMBUS 4CH 8WDFN
NCT210RQR2G
IC TEMP SENSOR LOC/REM 16QSOP
NCT214MT3R2G
IC TEMP SENSOR LOC/REM 10WDFN
NCT72CMNR2G
IC REMOTE THERMAL SENSOR 8-DFN
NCT7491RQR2G
IC REMOTE THERMAL MONITOR 24QSOP
NCT75MNR2G
IC SENSOR TEMP DGTL 8DFN
相关代理商/技术参数
NCP1654BD200R2G
功能描述:功率因数校正 IC NCP1654 - 200KHZ RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel
NCP1654BD65R2G
功能描述:功率因数校正 IC NCP1654-65K-B-SOIC RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel
NCP1654BP65G
功能描述:功率因数校正 IC NCP1654-65K-B-PDIP RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel
NCP1654PFCGEVB
功能描述:电源管理IC开发工具 NCP1654 PWR FACT CONT EVB
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
NCP1729-SKT
制造商:P&S 功能描述:Sample Kit, including Two NCP1729SN35T1 and A Development Source CD-ROM 制造商:P&S 功能描述:Sample Kit,including Two NCP1729SN35T1 and A Development Source CD-ROM
NCP1729SN35T1
功能描述:电荷泵 Switched Cap Voltage RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube
NCP1729SN35T1G
功能描述:电荷泵 Switched Cap Voltage Inverter w/Shutdown RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube
NCP1729SN35T1G
制造商:ON Semiconductor 功能描述:Power Supply IC