MAX775CSA+

The MAX775CSA+ is a -12V high efficiency, low IQ inverting DC to DC controller in 8 pin NSOIC package. This negative output, inverting power controller can be configured to drive an external P-channel MOSFET. Additionally, part can be set to any desired output voltage using an external resistor divider. The inverting switching regulator delivers high efficiency over three decades of load current. It has a unique control scheme that combines the advantage of pulse skipping, pulse frequency modulation (PFM) converter (ultra-low supply current) with advantage of pulse width modulation (PWM) converter (high efficiency with heavy loads). This control scheme allows device to achieve 85% efficiency with loads from 5mA to 1A. It is used in LCD bias generators, high efficiency DC-to-DC converters and data communicators.

• Input voltage range from 3V to 16.5V
• Operating temperature range from 0°C to 70°C
• Up to 5W output power
• Maximum supply current is 100µA
• Maximum shutdown current is 5µA
• Current limited PFM control scheme
• Switching frequency is 300KHz
• Maximum REF load regulation is 10mV at 0µA ≤ IREF ≤ 100µA
• Maximum REF line regulation is 100µV/V at 3V ≤ V+ ≤ 16.5V
• EXT rise time & fall time is 50ns

Applications

Power Management, Industrial, 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