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AS13985F27-T Datasheet(PDF) 2 Page - ams AG |
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AS13985F27-T Datasheet(HTML) 2 Page - ams AG |
2 / 13 page AS13985 Micropower 150mA Low-Noise LDO www.austriamicrosystems.com Revision 1.13 1 - 12 Datasheet 1 General Description The AS13985 is a high-performance low-dropout 150mA voltage regulator designed for use with very-low ESR out- put capacitors. The device can deliver superior perfor- mance in all specifications critical to battery-powered designs, and is perfectly suited for mobile phones, PDAs, MP3 players, and other battery powered devices. Stability is guaranteed with a ceramic output capacitor from 1 to 22µF. The low equivalent series resistance of these capacitors ensures low output impedance at high frequen- cies. Automatic sleep mode requires less than 1µA quiescent current when pin EN is pulled low. Regulation performance is excellent even under low drop- out conditions, when the power transistor has to operate in linear mode. A 10nF bypass capacitor can be added to reduce output noise to 30µV. The low-noise performance allows direct connection of noise sensitive circuits without additional fil- tering networks. Multiple output voltage options are available as standard products. Contact austriamicrosystems AG for details. The AS13985 is available in a 5-bump WLP package and a 5-pin SOT23 package. Figure 1. AS13985 - Block Diagram 2 Key Features ! Ultra-Low Dropout Voltage (typically 45mV @ 150mA, 0.3mV @ 1mA) ! Supply Range: 2.5V to 5.5V ! Output Voltage Range: 1.2V to 5.0V (in 25mV Steps) ! Output Current: 150mA (Guaranteed) ! Stable with Low-ESR Output Capacitor ! Integrated Over-Temperature/Over-Current Protection ! Low GND Pin Current (only 95µA) ! Output Voltage Accuracy: 1% ! Minimal External Components Required ! High Peak-Current Capability ! Low Shutdown Current: ≤1µA ! Operating Temperature Junction Range: -40 to +125°C ! Smallest Available Packages: - 5-bump WLP -5-pin SOT23 3 Applications The AS13985 is ideal for powering cordless and mobile phones, MP3 players, CD and DVD players, PDAs, hand- held computers, digital cameras, and any other hand-held battery-powered device. VREF AS13985 Over-Current/ Over-Temperature Protection + – EN VIN VOUT BYPASS GND |
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