- 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：电流模式 PWM 控制器
- 点击这里打开及下载UC1843-HIREL的技术文档资料
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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%.
- –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
- Topology
- Boost, Flyback, Forward
- Duty cycle (Max) (%)
- 100
- Supply voltage (Max) (V)
- 30
- UVLO thresholds on/off (V)
- 8.4/7.6
- Features
- Error Amplifier, Multi-topology
- Operating temperature range (C)
- -55 to 125
- Rating
- Military
- Frequency (Max) (kHz)
- 500
- Gate drive (Typ) (A)
- 1
UC1843-HIREL的完整型号有：UC1843MKGD1，以下是这些产品的关键参数及官网采购报价：
UC1843MKGD1，工作温度：-55 to 125，封装： (KGD)-0，包装数量MPQ：100个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：Call TI，TI官网UC1843MKGD1的批量USD价格：215.292（1000+）
UC1843MKGD1，工作温度：-55 to 125，封装： (KGD)-0，包装数量MPQ：100个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：Call TI，TI官网UC1843MKGD1的批量USD价格：215.292（1000+）
