参数资料
型号: NCP1217AD100R2
厂商: ON Semiconductor
文件页数: 2/19页
文件大小: 0K
描述: IC CTRLR PWM CM OVP HV 8SOIC
产品变化通告: LTB Notification 03/Jan/2008
标准包装: 2,500
输出隔离: 隔离
频率范围: 90kHz ~ 110kHz
输入电压: 8.3 V ~ 16 V
工作温度: 0°C ~ 125°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)
NCP1217, NCP1217A
+
See Application
Section
Aux.
+
V OUT
NCP1217
EMI
FILTER
1
2
3
4
Adj HV
FB
CS V CC
Gnd Drv
8
7
6
5
UNIVERSAL
INPUT
Ramp Adjustment
+
Figure 1. Typical Application Example
PIN FUNCTION DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
Pin Name
Adj
FB
CS
GND
Drv
V CC
NC
HV
Function
Adjust the skipping peak current
Sets the peak current setpoint
Current sense input
The IC ground
Driving pulses
Supplies the IC
--
Ensures a clean and lossless
startup sequence
Description
This pin lets you adjust the level at which the cycle skipping process takes
place. Shorting this pin to ground permanently disables the skip cycle
feature.
By bringing this pin above 3.1 V, you permanently shut off the device.
By connecting an optocoupler to this pin, the peak current setpoint is ad-
justed accordingly to the output power demand.
This pin senses the primary current and routes it to the internal comparat-
or via an L.E.B. By inserting a resistor in series with the pin, you control
the amount of ramp compensation you need.
--
The driver ’s output to an external MOSFET.
This pin is connected to an external bulk capacitor of typically 22 m F.
This unconnected pin ensures adequate creepage distance.
Connected to the high--voltage rail, this pin injects a constant current into
the V CC capacitor during the startup sequence.
http://onsemi.com
2
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相关代理商/技术参数
参数描述
NCP1217AD100R2G 功能描述:电流型 PWM 控制器 Current Mode PWM w/50% Duty Cycle Max RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
NCP1217AD133R2 功能描述:电流型 PWM 控制器 Current Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
NCP1217AD133R2G 功能描述:电流型 PWM 控制器 Current Mode PWM w/50% Duty Cycle Max RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
NCP1217AD65R2 功能描述:电流型 PWM 控制器 Current Mode PWM RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
NCP1217AD65R2G 功能描述:电流型 PWM 控制器 Current Mode PWM w/50% Duty Cycle Max RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14