LM2937 500毫安低压差稳压器 LM2937 500 mA Low Dropout Regulator
The LM2937 is a positive voltage regulator capable of supplying up to 500 mA of load current. The use of a PNP power transistor provides a low dropout voltage characteristic. With a load current of 500 mA the minimum input to output voltage differential required for the output to remain in regulation is typically 0.5 V 1-V ensured maximum over the full operating temperature range. Special circuitry has been incorporated to minimize the quiescent current to typically only 10 mA with a full 500-mA load current when the input to output voltage differential is greater than 3 V.
The LM2937 requires an output bypass capacitor for stability. As with most low dropout regulators, the ESR of this capacitor remains a critical design parameter, but the LM2937 includes special compensation circuitry that relaxes ESR requirements. The device is stable for all ESR below 3 Ω. This allows the use of low ESR chip capacitors.
Ideally suited for automotive applications, the LM2937 will protect itself and any load circuitry from reverse battery connections, two-battery jumps, and up to 60-V/−50-V load dump transients. Familiar regulator features such as short circuit and thermal shutdown protection are also built in.
输出接口数 1
输出电压 5 V
输出电流 400 mA
供电电流 2mA ~ 20mA
静态电流 2.00 mA
输出电容类型 Ceramic
跌落电压 0.5V @500mA
调节输出数 1
输入电压Max 26 V
输入电压Min 6 V
输出电压Min 5 V
输出电流Max 0.5 A
工作温度Max 85 ℃
工作温度Min -40 ℃
精度 ±5 %
输入电压 26 V
安装方式 Surface Mount
引脚数 4
封装 TO-261-4
高度 1.7 mm
封装 TO-261-4
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
LM2937IMPX-5.0/NOPB TI 德州仪器 | 当前型号 | 当前型号 |
LM2937IMP-5.0/NOPB 德州仪器 | 类似代替 | LM2937IMPX-5.0/NOPB和LM2937IMP-5.0/NOPB的区别 |
UA78M05IDCYR 德州仪器 | 类似代替 | LM2937IMPX-5.0/NOPB和UA78M05IDCYR的区别 |
LM2937IMP-5.0 德州仪器 | 类似代替 | LM2937IMPX-5.0/NOPB和LM2937IMP-5.0的区别 |