DESCRIPTION

The SS6620/21/22 are high-efficiency stepup DC/DC converters, with start-up voltage as low as 0.8V and operating with an input voltage down to 0.7V. Consuming only 20mA of quiescent current, these devices offer a built-in synchronous rectifier that reduces size and cost by eliminating the need for an external Schottky diode, improving overall efficiency by minimizing losses.

FEATURES

• High efficiency of 93 (VIN=2.4V, VOUT=3.3V, IOUT=200mA).

• Quiescent supply current of 20mA.

• Power-saving shutdown mode (0.1mA typical).

• Internal synchronous rectifier (no external diode )

• Selectable current limit for reduced ripple (SS6622).

• Low noise, anti-ringing feature (SS6622)

• On-chip low-battery detector.

• Low-battery hysteresis

APPLICATIONS

• Palmtop & notebook computers.

• PDAs

• Wireless phones

• Pocket organizers.

• Cameras.

• 1 to 2-cell hand-held devices