UC2843AQD8RQ1开关控制器Texas Instruments

• Qualified for Automotive Applications

• Extended Temperature Performance of

–40°C to 125°C

• Optimized for Off-Line and DC-to-DC

Converters

• Low Start-Up Current (<0.5 mA)

• Trimmed Oscillator-Discharge Current

• 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

The UC2843A control IC is a pin-for-pin compatible improved version of the UC2843. Providing the necessary

features to control current mode switched mode power supplies, this device has the following improved features.

Start up current is specified to be less than 0.5 mA. Oscillator discharge is trimmed to 8.3 mA. During

undervoltage lockout, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V

拓扑结构:Boost输出端数量:1 Output开关频率:500 kHz占空比 - 最大:100 %输出电流:1 A最小工作温度:- 40 C最大工作温度:+ 125 C安装风格:SMD/SMT封装 / 箱体:SOIC-8资格:AEC-Q100封装:Cut Tape封装:MouseReel封装:Reel工作温度范围:- 40 C to + 125 C 系列:UC2843A-Q1 类型:Current Mode PWM Controllers 商标:Texas Instruments 合规:AEC-Q100 下降时间:50 ns 产品类型:Switching Controllers 上升时间:50 ns 工厂包装数量:2500 子类别:PMIC - Power Management ICs 单位重量:75.600 mg