AP2127 300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR Description Pin Assignments The AP2127 Series are positive voltage regulator ICs fabricated by CMOS process. (Top View) (Top View) VIN The AP2127 Series have features of low dropout voltage, low noise, 3 high output voltage accuracy, and low current consumption which VIN 1 5 VOUT make them ideal for use in various battery-powered devices. GND 2 The AP2127 has 1.0V, 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.2V, Shutdown 3 4 NC/ADJ and 4.75V fixed voltage versions and 0.8V to 5.5V adjustable voltage 1 2 versions. GND VOUT SOT-23/SOT-23-3 SOT-23-5 The AP2127 Series are available in SOT-23 (for fixed versions only), SOT-23-3 (for fixed versions only), SOT-23-5, SOT-89 (for fixed (Top View) versions only) packages. Features Wide Operating Voltage: 2.5V to 6V High Output Voltage Accuracy: 2% High Ripple Rejection: 1 2 3 68dB f = 1kHz, 54dB f = 10kHz GND VIN VOUT Low Standby Current: 0.1A Low Dropout Voltage: 170mV 300mA for V = 3.3V, OUT SOT-89 140mV 300mA for V = 4.75V OUT Low Quiescent Current: 60A Typical Applications Low Output Noise: 60V V = 0.8V RMS OUT Short Current Limit: 50mA Datacom Over Temperature Protection Notebook Computers Compatible with Low ESR Ceramic Capacitor: Mother Board 1F for C and C IN OUT Excellent Line/Load Regulation Soft Start Time: 50s Auto Discharge Resistance: R = 60 DS(ON) 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 AP2127 Typical Applications Circuit V V IN OUT 1 5 VIN VOUT AP2127 R1 3 4 Shutdown ADJ C OUT 1F R2 GND C IN 1 F 2 V = 0.8(1+R1/R2)V OUT V V IN OUT 1 5 VIN VOUT AP2127 3 Shutdown C OUT 1F C IN GND 1 F 2 For Fixed Voltage Versions 2 of 24 AP2127 December 2017 Diodes Incorporated www.diodes.com Document number: DS36478 Rev. 7 - 2