Dual Step-Down DC-DC Converter
Dual Step-Down DC-DC Converter
The ST2S06 is a dual step-down DC-DC converter optimized for powering low-voltage digital cores in ODD applications and, generally, to replace the high current linear solution when the power dissipation may cause a high heating of the application environment. It provides up to 0.5 A over an input voltage range of 2.5 V to 5.5 V.
A high switching frequency of 1.5 MHz allows the use of tiny surface-mount components as well as a resistor divider to set the output voltage value.
Only an inductor and two capacitors are required. A low output ripple is guaranteed by the current mode PWM topology and the utilization of low E.S.R. SMD ceramic capacitors. The device is thermally protected and current limited to prevent damage due to accidental short circuit. The ST2S06 series is available in the QFN12L (4x4 mm) package.
Featrues
- Step-down current mode PWM (1.5 MHz) DC-DC converter
- Fixed or adjustable output voltage from 0.8 V
- 2% DC output voltage tolerance
- Synchronous rectification
- Reset function for A and D versions
- Inhibit function for B version
- Internal soft start for start-up current limitation and power ON delay of 50-100µs
- Typical efficiency: > 90%
- 0.5 A output current capability
- Non-switching quiescent current: max 1 mA over temperature range
- RDS(ON) 150 mΩ (typ.)
- Uses tiny capacitors and inductors
- Available in QFN12L (4x4 mm)
