Date: 29/09/2009

3.5MHz, 500mA synchronous step down DC-DC regulator

The SC195 from Semtech is a high efficiency, 500mA step down regulator designed to operate with an input voltage range of 2.9V to 5.5V. Four control logic pins are used to select the output voltage, eliminating the need for external feedback resistors.


Features:

Input Voltage - 2.9V to 5.5V
Output Voltage - 0.8V to 3.3V
Output current capability - 500mA
Efficiency up to 94%
15 Programmable output voltages
High light-load efficiency via automatic PSAVE mode
Fast transient response
Temperature range - -40 to +85°C
Oscillator frequency - 3.5MHz
100% duty cycle capability
Quiescent current - 38µA typ
Shutdown Current - 0.1µA typ
Internal soft-start
Over-voltage protection
Current limit and short circuit protection
Over-temperature protection
Under-voltage lockout
Floating control pin protection
Pb free, Halogen free, and RoHS/WEEE compliant
Package: MLPQ-UT8 1.5 x 1.5 x 0.6 (mm) package


The suggested applications of this device are, smart phones and cellular phones, MP3/personal media players, personal navigation devices, digital cameras, single Li-ion cell or 3 NiMH/NiCd cell devices and devices with 3.3V or 5V internal power rails.

For more info visit www.semtech.com