MAX757CPA+

The MAX757CPA+ is a CMOS Step-up DC-DC Switching Regulator for small, low input voltage or battery-powered systems. The MAX757 is an adjustable version that accepts an input voltage down to 0.7V and generates a higher adjustable output voltage in the range from 2.7 to 5.5V. Typical full-load efficiencies for the MAX757 is greater than 87%. The MAX757 provide three improvements over previous devices. Physical size is reduced-the high switching frequencies (up to 0.5MHz) made possible by MOSFET power transistors allow for tiny (<lt/>5mm diameter) surface-mount magnetic. Efficiency is improved to 87% (10% better than with low-voltage regulators fabricated in bipolar technology). Supply current is reduced to 60µA by CMOS construction and an unique constant-off-time pulse-frequency modulation control scheme.

• Operates down to 0.7V input supply voltage
• 87% Efficiency at 200mA
• 60µA Quiescent current
• 20µA Shutdown mode with active reference and LBI detector
• ±1.5% Reference tolerance over-temperature
• Low-battery detector (LBI/LBO)

Applications

Computers & Computer Peripherals, Medical, Power Management, Portable Devices

Warnings

ESD sensitive device, take proper precaution while handling the device. 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