UC3842B,UC3842T,KA3842
ST
企业名:深圳市广辉电子有限公司
类型:
电话: 13686868407
手机:13686868407
联系人:陈树辉
微信:
邮箱:659974144@qq.com
地址:广东深圳深圳市深南东路金城大厦3-10-A//柜台:深圳市华强北路新华强电子世界Q3B026室
∟ 其他IC(5)
PWM开关电源集成控制器
UC2842 | UC3842 | |
Topology | Boost, Flyback, Forward | Boost, Buck, Flyback, Forward |
Control Method | Current Mode | Current Mode |
Duty Cycle(Max)(%) | 100 | 100 |
Frequency(Max)(kHz) | 450 | 450 |
UVLO Thresholds On/Off(V) | 16/10 | 16/10 |
Pin/Package | 14SOIC, 8PDIP, 8SOIC | 14SOIC, 8PDIP, 8SOIC |
Regulated Outputs(#) | 1 | 1 |
Operating Temperature Range(°C) | -40 to 85 | 0 to 70 |
The UC1842/3/4/5 family of control devices provides the necessary features to implement off-line or dc-to-dc fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout featuring start up current less than 1 mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off state.
Differences between members of this family are the under-voltage lockout thresholds and maximum duty cycle ranges.
企业名:深圳市广辉电子有限公司
类型:
电话: 13686868407
手机:13686868407
联系人:陈树辉
微信:
邮箱:659974144@qq.com
地址:广东深圳深圳市深南东路金城大厦3-10-A//柜台:深圳市华强北路新华强电子世界Q3B026室