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AS1359-BTTT-30 Datasheet(PDF) 1 Page - ams AG |
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AS1359-BTTT-30 Datasheet(HTML) 1 Page - ams AG |
1 / 14 page AS1358/AS1359 150mA/300mA, Ultra-Low-Noise, High-PSRR Low Dropout Regulators www.austriamicrosystems.com Revision 1.04 1 - 14 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, cur- rent 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: 1.5 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 150/300mA 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 accesso- ries, wireless LANs, digital cameras, personal audio devices, and any other portable, battery-powered appli- cation. Table 1. Standard Products Model Load Current Output Voltage AS1358 150mA Preset – 1.5 to 4.5V AS1359 300mA Preset – 1.5 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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