UM4750中文资料300mA、微功率、双通道线性稳压器数据手册Union-IC规格书

描述 Description

The UM4750 series are dual channel VLDO (very low dropout) linear regulators designed for low power portable applications. The range of output voltage is from 1.2V to 5.0V while operated from 2.5V to 5.5V input. Typical output noise is only 200μVRMS and maximum dropout is just 200mV at the load current of 100mA.

The UM4750 series offer high output voltage accuracy, excellent transient response, stability with ultra low ESR ceramic capacitors as small as 1μF, thermal overload protection and output current limiting.

The UM4750S-xx series are available in a low profile SOT23-6 package, the UM4750DA-xx series are available in a low profile DFN6 2.0×2.0 package, and UM4750DB-xx series are available in a low profile DFN8 3.0×3.0 package.

特性 Features

- Very Low Dropout: 200mV (Max) at 100mA
- Maximum Input Voltage: 5.5V
- Low Noise: 200μVRMS (10Hz to 100kHz)
- Fast Transient Response
- Dual LDO Outputs (300mA/300mA)
- Output Current Limit
- Stable with 1μF Output Capacitor
- Thermal Overload Protection
- Low Profile SOT23-6, 6-Lead DFN 2.0×2.0 and 8-Lead DFN 3.0×3.0 Packages

应用 Application

- Bluetooth/802.11 Cards
- PDAs and Notebook Computers
- Portable Instruments and Battery-Powered Systems
- Cellular Phones