MAX1765EEE+

The MAX1765EEE+ is an 800mA, low-noise, step-up DC to DC converter with 500mA linear regulator in 16 pin QSOP package. It operates at a high 1MHz fixed frequency while maintaining an exceptionally low quiescent supply current (200μA). Its small external components and tiny package. The MAX1765 uses a synchronous-rectified pulse width modulation boost topology to generate 2.5V to 5.5V outputs from a wide range of input sources, such as one to three alkaline or NiCd/NiMH cells or a single lithium-ion cell. It significantly improves efficiency at low load currents while automatically transitioning to fixed-frequency PWM operation at medium to high load currents to maintain excellent full-load efficiency. Forced-PWM mode is available for applications that require constant-frequency operation at all load currents and the MAX1765 may also be synchronized to an external clock to protect sensitive frequency bands in communications equipment.

• Supply Voltage is 5.5V
• Operating temperature range from -40°C to 85°C
• Up to 93% efficiency
• Low 125mV dropout at 500mA
• Logic controlled shutdown is 0.1μA
• Adjustable inductor current limit and soft-start
• Thermal shutdown

Applications

Power Management, Portable Devices

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