MAX653CPA+

The MAX653CPA+ is a 3V/adjustable, high-efficiency, low IQ, step down DC to DC converter in 8 pin DIP package. The step down switching regulator provides high efficiency over a wide range of load currents, delivering up to 225mA. A current-limiting pulse-frequency-modulated (PFM) control scheme gives the devices the benefits of pulse-width-modulated (PWM) converter (high efficiency at heavy loads) while using only 10µA of supply current (vs. 2mA to 10mA for PWM converter). The result is high efficiency over a wide range of loads. The input range is 4V to 11.5V provides lower preset output voltage of 3V or the output can be user-adjusted to any voltage from 1.3V to the input voltage. It has an internal 1A power MOSFET switch, making them ideal for minimum-component, low and medium power applications.

• Low battery detection comparator
• Current limiting PFM control scheme
• Dropout voltage is 0.5V at IOUT = 100mA, L = 100μH
• Efficiency is 85% (IOUT = 100mA, L = 100μH)
• Switch on-time is 8.3μs and switch off-time is 17.2μs (V+ = 9V, VOUT = 3V)
• Operating temperature range from 0°C to +70°C
• 5V to 3.3V Conversion; 9V Battery to 5V, 3.3V, or 3V Conversion; High-Efficiency Linear Regulator Replacement; Portable Instruments and Handy-Terminals

Applications

Power Management, Portable Devices, Consumer Electronics

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