MAX638AEPA+

MAXIM INTEGRATED PRODUCTS  MAX638AEPA+  芯片, 降压开关稳压器, 可调

The is a CMOS step down switching regulator in 8 pin DIP package. This device is designed for minimum component, low power DC to DC conversion. Typical application requires only small, low cost inductor, an output filter capacitor and a catch diode. Low battery detection circuitry is included on-chip. It is fixed +5V output regulator and can also be set for other voltages by adding two resistors. The MAX638 is used in linear voltage regulator replacement, +12V to +5V conversion and battery life extension applications.

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Supply voltage range from 5V to 16.5V Vout = 5V and 2.2V to 16.5V adjustable mode

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

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Typical efficiency of 85% and output current of 0.075A

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Supply current of 135µA at TA = 25°C

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Line regulation is 0.2% Vout and load regulation is 0.2% Vout

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Oscillator frequency of 65KHz and oscillator duty cycle of 50%