UC1843-HIREL - 电流模式 PWM 控制器

UC1843-HIREL是TI德州仪器公司的一款PWM与谐振控制器产品，UC1843-HIREL是电流模式 PWM 控制器，本站介绍了UC1843-HIREL的封装应用图解、特点和优点、功能等，并给出了与UC1843-HIREL相关的TI元器件型号供参考。

UC1843-HIREL - 电流模式 PWM 控制器 - PWM与谐振控制器 - 离线隔离型DC/DC控制器和转换器 - 德州仪器

产品描述

The UC1843 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. The under-voltage lockout threshold is 8.4 V and maximum duty cycle range is around 100%.

产品特性

–55°C to 125°C Known Good Die
Controlled Baseline
Optimized For Off-line and DC-to-DC Converters
Low Start-Up Current (<1 mA)
Automatic Feed Forward Compensation
Pulse-by-Pulse Current Limiting
Enhanced Load Response Characteristics
Under-Voltage Lockout With Hysteresis
Double Pulse Suppression
High Current Totem Pole Output
Internally Trimmed Bandgap Reference
500-kHz Operation
Low RO Error Amp

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