Conv DC-DC Single Step Up 0.7V to 8-Pin SOIC N

The MAX756/MAX757 are CMOS step-up DC-DC switching regulators for small, low input voltage or battery-powered systems. The MAX756 accepts a positive input voltage down to 0.7V and converts it to a higher pin-selectable output voltage of 3.3V or 5V. 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 2.7V to 5.5V. Typical full-load efficiencies for the MAX756/MAX757 are greater than 87%. The MAX756/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 (

• Operates Down to 0.7V Input Supply Voltage
• 87% Efficiency at 200mA
• 60µA Quiescent Current
• 20µA Shutdown Mode with Active Reference and LBI Detector
• 500kHz Maximum Switching Frequency
• ±1.5% Reference Tolerance Over Temperature
• Low-Battery Detector (LBI/LBO)
• 8-Pin DIP and SO Packages