NOT RECOMMENDED FOR NEW DESIGN - USE AP7361C AP7361 1A LOW DROPOUT ADJUSTABLE AND FIXED-MODE REGULATOR WITH ENABLE Description Pin Assignments The AP7361 is a 1A, adjustable and fixed output voltage, ultra-low (Top View) dropout linear regulator with enable. The device includes pass element, error amplifier, band-gap reference, current limit and thermal OUT 1 8 IN shutdown circuitry. The device is turned on when the EN pin is set to NC NC 2 7 logic high level. GND NC ADJ/NC 3 6 EN GND 4 5 The characteristics of the low dropout voltage and low quiescent current make it suitable for low to medium power applications, for U-DFN3030-8 example, laptop computers, audio and video applications, and battery powered devices. The typical quiescent current is approximately ( Top View ) ( Top View ) 70A. Built-in current-limit and thermal-shutdown functions prevent 3 3 IC from damage in fault conditions. 2 2 2 The AP7361 is available in U-DFN3030-8, SOT89-5, SOT223, TO252 and SO-8EP package. 1 1 SOT223/SOT223R TO252/TO252R Features Wide input voltage range: 2.2V - 6V (Top View) (Top View) 150mV Very Low Dropout at 300mA Load OUT 1 8 IN 500mV Very Low Dropout at 1A Load OUT EN 1 5 Low Quiescent Current (I ): 70A Typical Q 2 7 NC EN Adjustable Output Voltage Range: 1V to 5.0V GND GND 2 3 6 NC NC Fixed Output Options: 1V to 3.3V 4 5 GND NC ADJ/NC 3 4 IN Very-Fast Transient Response SO-8EP High PSRR SOT89-5 Accurate Voltage Regulation Current Limiting and Short Circuit Protection Applications Thermal Shutdown Protection Stable with Ceramic Output Capacitor 2.2F Servers and Laptops Ambient Temperature Range -40C to +85C FPGA and DSP Core or I/O Power U-DFN3030-8, SOT89-5, SOT223/SOT223R, TO252/TO252R TV, and Home Electrical Appliances and SO-8EP Battery-Powered Devices Available in Green Molding Compound (No Br, Sb) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See AP7361 Typical Applications Circuit V V IN V IN V OUT OUT IN OUT IN OUT AP7361 AP7361 R1 1uF 1uF 4.7uF 4.7uF Enable Enable ADJ EN EN GND GND R2 Fixed Version Adjustable Output U-DFN3030-8, SOT89-5 and SO-8EP U-DFN3030-8 and SOT89-5 V V IN OUT IN OUT AP7361 1uF 4.7uF GND Fixed Version TO252, SOT223 Pin Descriptions Pin Number Pin Function Name U-DFN3030-8 SOT89-5 TO252 TO252R SOT223 SOT223R SO-8EP The input of the regulator. Bypass to ground through at IN 8 4 1 3 1 3 8 least 1F ceramic capacitor. The output of the regulator. Bypass to ground through OUT 1 5 3 2 3 2 1 at least 2.2F ceramic capacitor. For improved ac load response a larger capacitor is recommended. GND 4 2 2 1 2 1 4 Ground Adjustable voltage version only a resistor divider from ADJ 3 3 NA NA NA NA NA this pin to the OUT pin and ground sets the output voltage. EN 5 1 NA NA NA NA 2 Enable input, active high NC 2, 6, 7 NA NA NA NA NA 3, 5, 6, 7 No connection 2 of 22 AP7361 March 2017 Diodes Incorporated www.diodes.com Document number: DS33626 Rev. 11 - 3