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AS3709 Datasheet(PDF) 1 Page - ams AG |
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AS3709 Datasheet(HTML) 1 Page - ams AG |
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1 / 74 page  ams Datasheet, Confidential: 2013-Aug [1-02] AS3709 – 1 AS3709 μPMIC with 5 DCDC and 2 LDOs The AS3709 is an ultra compact μPMIC containing 5 high-efficiency, constant-frequency synchronous buck converters in addition with two universal IO LDOs are available for lower current power rails. The wide input voltage range (2.7V to 5.5V), automatic power-save mode and minimal external component requirements make the AS3709 perfect for any single Li-Ion battery-powered or fixed 3.3V/5V supply application. Typical supply current with no load is 110μA and decreases to ≤ 7μA in shutdown mode. An internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. The internally fixed switching frequency (2MHz, 3MHz or 4MHz) allows the use of small surface mount external components. Very low output voltages can be delivered with the internal 0.6V feedback reference voltage. The AS3709 is available in a 32-pin QFN 4x4mm package and in a very compact CSP36 with 0.4mm pitch. For further understanding in regards to the contents of the datasheet, please refer to the Reference Guide located at the end of the document. Key Benefits & Features The benefits and features of AS3709, μPMIC with 5 DCDC and 2 LDOs are listed below: Figure 1: Added Value of using AS3709 Benefits Features Compact design due to small coils for IO and memory voltage generation 5 DCDC step down regulators (2-4MHz) Independent voltage rails for general purpose IO supplies 2 universal IO LDOs Flexible and fast adaptation to different processors/applications OTP programmable Boot and Power-down sequence Power saving control according to the processor‘s needs. Stand-by function with programmable sequence and voltages Self-contained start-up and control for single-cell battery applications. Safety shutdown feature. Control Interface I²C/SPI control lines ON key with 4/8s emergency shut-down POR with RESET I/O Dedicated packages for specific applications. Optimization for PCB cost or size. 32-pin QFN (4x4mm), 0.4mm pitch 36-ball WL-CSP 0.4mm pitch General Description |
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