精密低压降线性控制器 Precision Low Dropout Linear Controllers
DESCRIPON
The UC2832 and UC3833 series ofprecision linear regulators include all the control functions required in the design of very low dropout linear regulators. Additionally, they feature an innovative duty-ratio current limiting technique which provides peak load capability while limiting the average power dissipation of the external pass transistor during fault conditions. When the load current reaches an accurately programmed threshold, a gated-astable timer is enabled, which switches the regulator’s pass device off and on at an externally programmable duty-ratio. During the on-time of the pass element, the output current is limited to a value slightly higher than the trip threshold of the duty-ratio timer. The constant-current-limit is programmable on the UCx832 to allow higher peak current during the on-time of the pass device. With duty-ratio control, high initial load demands and short circuit protection may both be accom modated without extra heat sinking or foldback current limiting. Additionally, if the timer pin is grounded, the duty-ratio timer is disabled, and the IC operates n constant-voltage/constant-current regulating mode.
FEATURES
• Precision 1% Reference
• Over-Current Sense Threshold Accurate to 5%
• Programmable Duty-Ratio Over-Current Protection
• 4.5 V to 36 V Operation
• 100mA Output Drive,Source,or Sink
• Under-Voltage Lockout Additional Features of the UC2832 series:
• Adjustable Current Limit to Current Sense Ratio
• Separate +VIN terminal
• Programmable Driver Current Limit
• Access to VREF and E/A+
• Logic-Level Disable Input
输出接口数 1
输出电压 2 V
输出电流 400 mA
供电电流 9.5 mA
静态电流 3.30 mA
输入电压Max 36 V
输入电压Min 4.5 V
输出电流Max 400 mA
工作温度Max 70 ℃
工作温度Min 0 ℃
输入电压 4.5V ~ 36V
安装方式 Surface Mount
引脚数 16
封装 SOIC-16
高度 2.35 mm
封装 SOIC-16
工作温度 0℃ ~ 70℃
产品生命周期 Active
包装方式 Tube
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC版本 2015/06/15
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
UC3833DW TI 德州仪器 | 当前型号 | 当前型号 |
UC3833DWTR 德州仪器 | 完全替代 | UC3833DW和UC3833DWTR的区别 |
UC2833DW 德州仪器 | 类似代替 | UC3833DW和UC2833DW的区别 |
UC2833DWG4 德州仪器 | 类似代替 | UC3833DW和UC2833DWG4的区别 |