- 制造厂商:TI
- 产品类别:电源管理
- 技术类目:交流/直流和隔离式直流/直流开关稳压器 - PWM 控制器
- 功能描述:具有 8.5V/7.9V UVLO 和 100% 占空比的汽车类单端 500KHz 电流模式 PWM 控制器
- 点击这里打开及下载UC2843AQ的技术文档资料
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The UC2842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC2842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up current is guaranteed to be less than 0.5 mA. Oscillator discharge is trimmed to 8.3 mA. During under voltage lockout, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V.
The difference between members of this family are shown in the table below.
- 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
- Topology
- Boost, Flyback, Forward
- Duty cycle (Max) (%)
- 100
- Supply voltage (Max) (V)
- 28
- UVLO thresholds on/off (V)
- 8.5/7.9
- Features
- Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Multi-topology
- Operating temperature range (C)
- -40 to 125
- Rating
- Automotive
- Frequency (Max) (kHz)
- 500
- Gate drive (Typ) (A)
- 1
UC2843AQ的完整型号有:UC2843AQD8、UC2843AQD8R、UC2843AQDR,以下是这些产品的关键参数及官网采购报价:
UC2843AQD8,工作温度:-40 to 125,封装:SOIC (D)-8,包装数量MPQ:75个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网UC2843AQD8的批量USD价格:0.525(1000+)
UC2843AQD8R,工作温度:-40 to 125,封装:SOIC (D)-8,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网UC2843AQD8R的批量USD价格:0.464(1000+)
UC2843AQDR,工作温度:-40 to 125,封装:SOIC (D)-14,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网UC2843AQDR的批量USD价格:0.479(1000+)
UC2843AQD8,工作温度:-40 to 125,封装:SOIC (D)-8,包装数量MPQ:75个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网UC2843AQD8的批量USD价格:0.525(1000+)
UC2843AQD8R,工作温度:-40 to 125,封装:SOIC (D)-8,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网UC2843AQD8R的批量USD价格:0.464(1000+)
UC2843AQDR,工作温度:-40 to 125,封装:SOIC (D)-14,包装数量MPQ:2500个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:NIPDAU,TI官网UC2843AQDR的批量USD价格:0.479(1000+)