GENERAL DEscriptION

The SGM6605 is a constant frequency, current mode, synchronous boost switching regulator. The input voltage can accept the voltage at a range from 2.7V to 5.5V. And the output voltage is adjustable with a peak of 5.2V. This device also has the 5.0V fixed output version.

High switching frequency minimizes the sizes of inductor and capacitor. Integrated power MOSFETs and internal compensation make the SGM6605 simple to use and fit the total solution into a compact space.

The SGM6605 enters the power-save mode at light loads to maintain high efficiency. Anti-ringing control circuitry reduces EMI concerns by damping the inductor in discontinuous mode. The SGM6605 provides true output disconnection, allowing VOUT to go to 0V during shutdown without drawing any current from the input source. The SGM6605 supports 1.8V logic for control.

The output voltage of SGM6605-ADJ can be programmed by an external resistor divider, and that of SGM6605-5.0 is fixed internally on the chip. The device is available in a Green SOT-23-6 package. It operates over an ambient temperature range of -40℃ to +85℃.

FEATURES

• 2.7V to 5.5V Input Voltage Range

• 5.0V Fixed Output Voltage

• Adjustable Output Voltage up to 5.2V

• Up to 90% Efficiency

• 30μA (TYP) Current

• 1μA (MAX) Shutdown Current

• 6V Output Voltage Clamping

• Improved Light Load Efficiency with Power-Save Mode (PSM)

• Load Disconnected in Shutdown Mode

• 1.8V Logic on EN Pin for Control

• Low Reverse Leakage Current when VOUT > VIN

• Over-Temperature Protection

• Available in a Green SOT-23-6 Package

• -40℃ to +85℃ Operating Temperature Range

APPLICATIONS

Single-Cell Li Battery Powered Products

Portable Audio Players

Mobile Phones

Personal Medical Devices