MAX1795EUA+T

DC-DC开关升压稳压器, 可调, 0.7V-5.5V输入, 500 kHz, 180 mA输出, µMAX-8

The from Products is a low supply current, step-up DC to DC converter with true shutdown in 8 pin µMAX package. This step-up DC to DC converter intended for portable hand-held devices. It features True Shutdown™ circuitry which fully disconnects O/P from I/P in shutdown that improves efficiency and eliminates costly external components. The device features LX-damping circuitry for reduced EMI in noise-sensitive applications. For additional in-system flexibility, a battery monitoring comparator LBI/LBO remains active even when converter is in shutdown. It starts up with voltages as low as 0.85V and operate with an input down to +0.7V. The preset, pin-selectable 5V or 3.3V output. Output can also be adjusted to other voltages using 2 external resistors. The 0.25A current limit allows optimization of external components for different loads. It is used at portable digital audio players, PDAs/palmtops, wireless handsets applications.

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High efficiency is 95%

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Operating temperature range from -40°C to 85°C

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Quiescent supply current is 25µA

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Low noise anti-ringing feature

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Shutdown current is 2µA