Description
The SC197 contains two identical high efficiency 500mA step-down regulators designed for use in battery powered applications. Each regulator includes 15 programmable output voltage settings that can be selected using the four control pins, eliminating the need for external feedback resistors. The output voltage can be fixed to a single setting or dynamically switched between
different levels. Pulling all four control pins low disables the output.

FEATUREs
Input Voltage — 2.9V to 5.5V
Output Voltage — 0.8V to 3.3V
Output current capability — 500mA per regulator
Efficiency up to 94%
Programmable output voltages — 15
High light-load efficiency via automatic PSAVE mode
Fast transient response
Oscillator frequency — 3.5MHz
100% duty cycle capability
Quiescent current — 38µA typical per regulator
Shutdown current — 0.1µA typical per regulator
Internal soft-start
Over-voltage protection
Current limit and short circuit protection
Over-temperature protection
Under-voltage lockout
Floating control pin protection
MLPQ-UT18 2.0 x 3.0 x 0.6 (mm) package
Lead-free, halogen-free, and RoHS/WEEE compliant

Aplications
Smart phones and cellular phones
MP3/Personal media players
Personal navigation devices
Digital cameras
Single Li-ion cell or 3 NiMH/NiCd cell devices
Devices with 3.3V or 5V internal power rails