SC900 Datasheet | SEMTECH

Programmable Penta ULDO with RESET and I2C Interface POWER MANAGEMENT Description The SC900 is a highly integrated power management device for low power portable applications. The device contains five adjustable low-dropout linear regulators (LDOs) with CMOS pass-devices as well as a band-gap reference, I2C interface, and DACs to control the output voltages. Many Features of the SC900 are programmable through the I2C interface. These include the ability to indepen.. dently turn on any bination of the five regulators. All five of the LDO output voltages are programmable in 50m V steps from 1.45V to 3.00V. Each LDO can have an active shutdown or nonactive shutdown program option through the interface. There is also a reset monitor flag that is associated with LDOA. In addition, the device has a separate programmable power-good monitor flag that activates when one or more LDOs go out of regulation. The SC900 offers significant quiescent current and space savings to the system designer by sharing reference and biasing among five LDOs. The small and thermally efficient 20-lead MLPQ package make it ideal for use in portable products where minimizing layout area is critical. Features ! ! ! ! ! ! ! ! ! ! ! ! ! Five LDO regulators in one package I2C interface with multiple device capability Independent I2C enable/disable of LDOs Independent I2C control of output voltages Low thermal impedance of 40°C per watt 150m V dropout at 150m A Input range from 2.7V to 5.5V Programmable power-good flag Minimal number of external ponents Over temperature protection Small 4mm x 4mm 20-lead MLPQ package Small input/output filter capacitors Programmable VOUT range - 1.45V to 3.00V for each LDO Applications ! ! ! ! ! Palmtop/Laptop puters Personal Digital Assistants Cellular telephones Battery-powered equipment High efficiency linear power supplies Typical Application Circuit LDOE LDOD VIN INA 4.7µF VBAT INB INCD INE EN LDOPGD ARST SDA SCL A0 GND...