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AS1359-BTTT-31 Datasheet(PDF) 2 Page - ams AG |
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AS1359-BTTT-31 Datasheet(HTML) 2 Page - ams AG |
2 / 17 page AS1358 / AS1359 150mA/300mA, Ultra-Low-Noise, High-PSRR Low Dropout Regulators www.austriamicrosystems.com Revision 1.5 1 - 16 Datasheet 1 General Description The AS1358 / AS1359 are ultra-low-noise, low-dropout linear regulators specifically designed to deliver up to 150/300mA continuous output current, and can achieve a low 140mV dropout for 300mA load current. The LDOs are designed and optimized to work with low-cost, small-capacitance ceramic capacitors. The devices are available as the standard products listed in Table 1. An integrated P-channel MOSFET pass transistor allows the devices to maintain extremely low quiescent current (40µA). The AS1358 / AS1359 uses an advanced architecture to achieve ultra-low output voltage noise of 9µVRMS and a power-supply rejection-ratio of better than 80dB (up to 10kHz). The AS1358 / AS1359 requires only 1µF output capacitor for stability at any load. When the LDO is disabled, current consumption drops below 500nA. The devices are available in a TSOT23 5-pin package. Figure 1. Typical Application Circuit 2 Key Features Preset Output Voltages: 1.5V to 4.5V (in 50mV steps) Output Noise: 9µVRMS @ 100Hz to 100kHz Power-Supply Rejection Ratio: 92dB @ 1kHz Low Dropout: 140mV @ 300mA Load Stable with 1µF Ceramic Capacitor for any Load Guaranteed 150mA / 300mA Output 1.25V Internal Reference Extremely-Low Quiescent Current: 40µA Excellent Load/Line Transient Overcurrent and Thermal Protection TSOT23 5-pin Package 3 Applications The devices are ideal for mobile phones, wireless phones, PDAs, handheld computers, mobile phone base stations, Bluetooth portable radios and accessories, wireless LANs, digital cameras, personal audio devices, and any other portable, battery-powered application. Table 1. Standard Products Model Load Current Output Voltage AS1358 150mA Preset – 1.5V to 4.5V AS1359 300mA Preset – 1.5V to 4.5V AS1358 / AS1359 4 BYPASS 2 GND 1 IN 5 OUT 3 SHDNN CIN 1µF On Off Input 2V to 5.5V COUT 1µF Output 1.5V to 4.5V CBYPASS 10nF |
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