AP139 300mA LOW-NOISE CMOS LDO General Description Features The AP139 is a positive voltage linear regulator utilizing CMOS Very Low Dropout Voltage technology. The features that include low quiescent current Low Current Consumption: Typ. 45A, max. 60uA (45 A typ.), low dropout voltage, and high output voltage Output Voltage: 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V accuracy, make it ideal for battery applications. EN input 3.3V, and 3.5V connected to the device will produce a low bias current. Guaranteed 300mA Output The space-saving SOT25 package is attractive for pocket and Input Range from 2.7 up to 5.5V hand held applications. Thermal Shutdown Current Limiting This rugged device has both thermal shutdown, and current limit Stability with Low ESR Capacitors protections to prevent device failure under the worst operating Low Temperature Coefficient conditions. Lead Free Package: SOT25 SOT25: Available in Green Molding Compound In a low noise, regulated supply application, a 10nF capacitor is (No Br, Sb) necessary to be placed in between Bypass and Ground. Lead Free Finish/RoHS Compliant (Note 1) The AP139 is stable with a low ESR output capacitor of 1.0 F or greater. Applications Personal Communication Devices Home Electric/Electronic Appliances PC Peripherals Battery-Powered Devices Ordering Information AP139 - XX W X - 7 Output Voltage Package Lead Free Packing 15 :1.5V W : SOT25 L : Lead Free 7 : Tap e & Reel G : Green 18 :1.8V 20 :2.0V 25 :2.5V 28 :2.8V 30 :3.0V 33 :3.3V 35 :3.5V 7 Tape and Reel Packaging Package Device Code (Note 2) Quantity Part Number Suffix AP139-XXWL-7 W SOT25 3000/Tape & Reel -7 Lead-free 3000/Tape & Reel -7 AP139-XXWG-7 W SOT25 Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at AP139 300mA LOW-NOISE CMOS LDO Pin Descriptions Pin Assignments ( Top View ) V OUT Pin BYP Pin No. Description 5 4 Name V 1 Power Supply IN GND 2 Ground AP139 EN 3 Enable Pin BYP 4 Bypass Signal Pin V 5 Output OUT 1 2 3 V GND IN EN SOT25 Block Diagram V V IN OUT Current Limit 1uA Thermal R1 Shutdown EN BYP - AMP + Vref R2 GND Absolute Maximum Ratings Symbol Parameter Rating Unit V Input Voltage +6 V IN I Output Current P /(V -V) mA OUT D IN O V Output Voltage GND - 0.3 to V + 0.3 V OUT IN ESD Classification B T Operating Junction Temperature Range -40 to +125 C OP T Maximum Junction Temperature 150 C MJ P Internal Power Dissipation 250 mW D AP139 Rev. 6 2 of 7 FEBRUARY 2009 www.diodes.com Diodes Incorporated