MAX638AESA+

The MAX638AESA+ is a CMOS step down switching regulator in 8 pin NSOIC 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.

• Supply voltage range from 5V to 16.5V (Vout = 5V) and 2.2V to 16.5V (adjustable mode)
• Operating temperature range from -40°C to 85°C
• Typical efficiency of 85% and output current of 0.075A
• Supply current of 135μA at TA = 25°C
• Line regulation is 0.2% Vout and load regulation is 0.2% Vout
• Oscillator frequency of 65KHz and oscillator duty cycle of 50%

Applications

Power Management, Portable Devices

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party