MAX1763EEE+

MAXIM INTEGRATED PRODUCTS  MAX1763EEE+  芯片, 直流/直流转换器, 升压, 1.5A, 1MHZ

The is a high power, low noise step-up DC to DC converter in 16 pin QSOP package. It is intended for use in battery powered wireless applications. This device maintains exceptionally low quiescent supply current 110µA despite its high 1MHz operating frequency. Small external components and tiny package make this device an excellent choice for small hand held applications that require longest possible battery life. The MAX1763 uses synchronous rectified PWM boost topology to generate 2.5V to 5.5V outputs from wide range of input sources such as one to three alkaline or NiCd/NiMH cells or single Li-Ion Li+ cell. The Maxim"s Idle Mode circuitry significantly improves efficiency at light load currents while smoothly transitioning to fixed frequency PWM operation at higher load currents to maintain excellent full load efficiency. The MAX1763 may also be synchronized to an external clock to protect sensitive frequency bands in communications equipment.

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Input voltage range from 0.7V to 5.5V

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

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94% efficiency and 1.5A output current

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Start-up input voltage of 1.1V

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Fixed 3.3V output or adjustable from 2.5V to 5.5V

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1µA logic controlled shutdown mode

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Analogue gain block for linear regulator or low battery comparator

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Adjustable current limit and soft start

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Maximum oscillator duty cycle of 90% at TA = 0°C to +85°C