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SS6612
High-Efficiency Synchronous Step-up DC/DC Converter with Selectable Current Limit
FEATURES
H...
www.DataSheet4U.net
SS6612
High-Efficiency Synchronous Step-up DC/DC Converter with Selectable Current Limit
FEATURES
High efficiency (93% with VIN=2.4V, VOUT= 3.3V, IOUT=200mA) Output current up to 500mA. (VIN=2.4V, at VOUT=3.3V, CLSEL=OUT) Quiescent supply current of 20µA Power-saving shutdown mode (0.1µA typical). Internal synchronous rectifier (no external diode required). Selectable current limit for reduced ripple. Low-noise, anti-ringing feature. On-chip low-battery detector. Low-battery hysteresis. Space-saving package: MSOP-10
DESCRIPTION
The SS6 612 is a high - efficiency step-up DC/DC converter, with a start-up voltage as low as 0.8V, and an operating voltage down to 0.7V. Consuming only 20µA of quiescent current, this device includes a built-in synchronous rectifier that reduces size and cost by eliminating the need for an external
Schottky diode, and improves overall efficiency by minimizing losses. The switching frequency can range up to 500KHz depending on the load and input voltage. The output voltage can be easily set; by two external resistors for 1.8V to 5.5V; con-
APPLICATIONS
Palmtop & Notebook Computers. PDAs Wireless Phones Pocket Organizers. Digital Cameras. Hand-Held Devices with 1 to 3 Cells of NiMH/NiCd Batteries.
necting FB to OUT to get 3.3V; or connecting to GND to get 5.0V. For additional design flexibility, the peak current of the internal switch is selectable (0.65A or 1.0A). The SS6612 also features a circuit that eliminates noise caused ...