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器件3D模型￥ 4.309
NCP1055P44G 其他数据使用手册 - ON Semiconductor（安森美）
制造商:
ON Semiconductor（安森美）
分类:
AC-DC转换器
封装:
DIP-8
描述:
不需要辅助偏置绕组/欠压锁定/热关闭
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
典型应用电路图在P1P2
原理图在P3
封装尺寸在P24P26
型号编码规则在P1P22P23P27
标记信息在P1P25P26P27
封装信息在P22P23
功能描述在P2
应用领域在P1P16
电气规格在P7P8P9
型号编号列表在P6
导航目录
NCP1055P44G数据手册
Page:
of 27 Go
若手册格式错乱，请下载阅览PDF原文件
NCP1050, NCP1051, NCP1052, NCP1053, NCP1054, NCP1055
www.onsemi.com
2
Figure 1. Typical Application
Startup & V
CC
Regulator Circuit
V
CC
Fault Detector
Power
Switch
Circuit
Oscillator &
Gating Logic
Control Input
Power Switch Circuit Output
3, 7−8
1
2
5
+
Snubber
+
+
+
−
Converter
DC Output
AC Line
Input
Ground
Pin Function Description
Pin
(SOT−223)
Pin
(PDIP−8)
Function Description
1 1 V
CC
This is the positive supply voltage input. During startup, power is supplied to this input
from Pin 5. When V
CC
reaches V
CC
(on), the Startup Circuit turns off and the output is
allowed to begin switching with 1.0 V hysteresis on the V
CC
pin. The capacitance con-
nected to this pin programs fault timing and frequency modulation rate.
2 2 Control Input
The Power Switch Circuit is turned off when a current greater than approximately 50 A
is drawn out of or applied to this pin. A 10 V clamp is built onto the chip to protect the
device from ESD damage or overvoltage conditions.
4 3, 7, 8 Ground This pin is the control circuit and Power Switch Circuit ground. It is part of the integrated
circuit lead frame.
− 4 No Connection
3 5 Power Switch
Drain
This pin is designed to directly drive the converter transformer primary, and internally
connects to Power Switch and Startup Circuit.
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