The LP3991 is a low-dropout voltage regulator with low quiescent current and ultra-small packages. The LP3991 can deliver output current up to 250mA. The device offers different fixed output voltages without external resistors, for the nominal output voltage. The LP3991 integrated current limit protection and short circuit protection and thermal shutdown protection in order to protect system abnormal. The output capacitor as small as 0.1µF is available for LP3991 application. The LP3991 is available in SOT23 package andultra-small TDFN-4 package with only 1mm 1mm size.
应用
◆Wearable Devices ◆Portable Medical Equipment ◆PDAs, Mobile Phones GPS devices
数据参数
数据参数
输出电流(mA)
250
输出电压(V)
1.2/1.8/3.0/3.3
输入电压(V)
1.5-5.5
电源抑制比(dB)
-45
精度(%)
1.5
导通压差(mV/mA)
180 @ 100
静态电流(uA)
5
特点
Low Quiescent
封装
SOT23/DFN4(1*1)
特征
特征
◆Ultra-low current consumption: 5µA (Typ) ◆Wide input voltage range: 1.5V to 5.5V ◆Fixed output voltages: ◆3.3V ◆High output voltage accuracy: ±1.5%(Typ) ◆Low dropout voltage: ◆80mV (Typ) at 50mA (VOUT = 3.3V) ◆170mV (Typ) at 100mA (VOUT = 3.3V) ◆Current limit and short circuit protection ◆Thermal shutdown protection ◆EN logic compatible with 1.2V ◆Robust ESD capability: ◆Human Body Model: 2000V ◆Charged Device Model: 500V ◆Available in small packages: ◆SOT23 ◆TDFN-4
