UM3730 Datasheet | Union Semiconductor

Description The UM3730 series are low dropout linear regulators designed for low power portable applications. Typical output noise is only 220μVRMS and typical dropout voltage is 155m V at the load current of 150m A. Ideal for battery powered applications, the UM3730 draws only 29μA current during no load operation. The UM3730 includes an auto-discharge feature that is activated when the enable pin is low. Other features include 2% 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 UM3730 series are available in low profile DFN4 1.0×1.0 and SOT353 packages. Applications Features z Digital Camera z Input Voltage Range: 2.5V to 5.5V z PDAs and Notebook puters z Guaranteed 150m A Output Current z Portable Instruments and Battery-Powered z ±2% Voltage Accuracy at 150m A Systems z Low Dropout Voltage: z Cellular Phones 155m V (Typical) at 150m A z Low Quiescent Current: 29μA (Typical) z Low Noise: 220μVRMS (10Hz to 100k Hz) z Available Fixed Output Voltage from 1.0V to 3.3V with 0.1V Step z Output Current Limit z Thermal Overload Protection z Stable with 1μF Output Capacitor z Low Profile DFN4 1.0×1.0 and SOT353 Packages Typical Application Circuit ________________________________________________________________________ http://.union-ic. Rev.04 Aug.2016 1/11 Pin Configurations Top View (Top View) M: Month Code UM3730DA-xx DFN4 1.0×1.0 Pin Description Pin Number 1 1 2 4 4 5 EP Pin Name DFN4 1.0×1.0 SOT353 VOUT - - - HS Pad NC OUT - 1 M: Month Code UM3730P-xx SOT353 Pin Function Output Voltage Supply Input Ground Enable Input: Active High. High=ON, Low=Off Supply Input Not Connected Output Voltage Exposed Heat Sink...