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AS1371-BTDT-15 Datasheet(PDF) 1 Page - ams AG |
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AS1371-BTDT-15 Datasheet(HTML) 1 Page - ams AG |
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1 / 14 page  AS1371 400mA, Low Input Vo ltage, Low Quiescent Current LDO www.austriamicrosystems.com Revision 1.04 1 - 14 Datasheet 1 General Description The AS1371 low input voltage, positive voltage regulator is designed to deliver up to 400mA while consuming typically only 15µA of quiescent current. The device operates from input voltages of 1.2V to 3.6V, and is available in fixed output voltages between 0.6V and 3.3V (programmable in 50mV steps). Operation at the full 400mA load current is dependent upon the maximum power dissipation available from package and environment. The low input voltage and ultra-low dropout voltage (20mV @ 100mA load and 80mV @ 400mA load) supports single primary cell operation in small applications, when operated with minimum input-to- output voltage differentials. In addition, the regulator provides a power management life extension by operating from pre-existing 1.8V and 2.5V outputs to provide low output voltages for new generation portable processor cores. The device features stable output voltage with ceramic capacitors down to a value of 1µF, strict output voltage regulation tolerances (±1%), and good line- and load- regulation. The AS1371 is available in a 6-pin 2x2 TDFN package and is qualified for -40°C to +85°C operation. 2 Key Features ! Ultra-Low Dropout Voltage: 20mV @ 100mA load ! Operating Input Voltage Range: 1.2V to 3.6V ! Output Voltages: 0.6V to 3.3V in 50mV steps ! Max. Output Current: 400mA ! Output Voltage Accuracy: ±1% ! Low Shutdown Current: 10nA ! Low Quiescent Current: 50µA @ max load ! Integrated Overtemperature/Overcurrent Protection ! Under-Voltage Lockout Feature ! Chip Enable Input ! Power-OK and Low Battery Detection ! Sense Input Option ! Minimal External Components Required ! Operating Temperature Range: -40°C to +85°C ! 6-pin 2x2 TDFN Package 3 Applications The devices are ideal for powering cordless and mobile phones, MP3 players, CD and DVD players, PDAs, hand-held computers, digital cameras, and any other hand-held and/or battery-powered device. Figure 1. AS1371 - Typical Application Diagram Input 1.2V to 3.6V CIN 1µF ON OFF 100k Ω COUT 1µF Output 0.6V to 3.3V IN EN GND SENSE OUT AS1371 POK |
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