GENERAL DEscriptION

The SGM6623 is a general-purpose miniature Boost DC/DC switching regulator with high efficiency for battery backup and standby power systems. The acceptable input voltage range of 0.8V to 12V can be converted to a regulated 3.3V to 13V output voltage with efficiency as high as 90%. SGM6623 can be used as backup charger for systems with 1- to 4-cell batteries. It operates at a 600kHz (TYP) switching frequency, allowing the use of small and low-profile inductor for compact design. It also has several built-in protection features, such as cycle-by-cycle over-current limit, soft-start, thermal shutdown and open loop over-voltage protection.

The SGM6623 is available in a Green SOT-23-6 package.

FEATURES

• 0.8V to 12V Input Voltage Range

• 3.3V to 13V Wide Output Voltage Range

• 4.4A Current Limited Integrated Switch

• Up to 90% Efficiency

• 600kHz Nominal Fixed Switching Frequency with Pulse Skipping at Light Loads

• Built-In Soft-Start Function

• Open Loop Over-Voltage Protection

• Enable Input Pin

• 47μA Typical Current (to VS Pin)

• 0.4μA Typical Supply Current in Shutdown

• Available in a Green SOT-23-6 Package

APPLICATIONS

Mobile Phones

Portable Equipment

Hand-Held Instruments

1-, 2-, 3- or 4-Cell Battery Systems