微源半导体

概述

The LP3988H is a low-dropout voltage regulator with very low noise and high PSRR in ultra-small package. The LP3988H can deliver output current up to 600mA. The output voltage could be selected to 1.8V, 2.5V, 2.8V, 3.0V or 3.3V.
The LP3988H is integrated over current protection and short circuit protection in order to protect system abnormal.
The input and output capacitor as small as 1µF will begood enough for LP3988H.
The LP3988H is available in 4 pins ultra-small TDFN-4 package with only 1mm  1mm size or normal SOT23-5 package.

应用

◆ Wearable Devices
◆ Portable Medical Equipment
◆ PDAs, Mobile Phones GPS devices

数据参数

输出电流(mA)

600

输出电压(V)

1.8/2.5/2.8/3.0/3.3

输入电压(V)

2.0-5.5

电源抑制比(dB)

-98

精度(%)

1.5

导通压差(mV/mA)

165 @ 250

静态电流(uA)

产品特征/功能

High PSRR,High Accuracy，Large current

封装

SOT23-5/DFN-4(1*1)/DFN-6（2*2）

特征

◆ Low current consumption: 24µA (Typ)
◆ Wide input voltage range: 2.0V to 5.5V
◆ High output voltage accuracy: ±1.5%
◆ Ultra high PSRR: 98dB at 20mA/1kHz
◆ Ultra low noise: 10 µVRMS
◆ Low dropout voltage:
- 165mV at 250mA (VOUT = 1.8V)
- 350mV at 500mA (VOUT = 1.8V)
◆ Integrated over-current protection
◆ Active-high EN pin
◆ Robust ESD capability:
- Human Body Model: 4 kV
- Charged Device Model: 1 kV
◆ Available in small packages:
- SOT23-5
- TDFN-4 (1.0mm  1.0mm)