The SC1172/3 is a programmable synchronous DC/DC converter with a low-dropout linear regulator controller. It provides most of the circuitry necessary to implement two DC/DC converters for powering advanced microprocessors such as Pentium® II (Klamath) or Deschutes.
The SC1172/3 combines a synchronous voltage mode controller with a low-dropout linear regulator to implement two DC/DC converters. It is designed for Intel Pentium II VRM8.1 requirements, offering a synchronous design that enables no heatsink solutions and up to 95% efficiency in the switching section. The integrated 5-bit D/A converter allows for programmable output voltage from 2.0V to 3.5V in 100mV increments and 1.30V to 2.05V in 50mV increments without external components.
| Oscillator Frequency | 200 kHz |
|---|---|
| Supply Current | 8 mA |
| Linear Section Output Voltage (SC1172) | 1.5V |
| Reference Voltage (SC1173) | 1.25V |
| Gain (Ag) | 35 dB |
No, the synchronous design enables a no heatsink solution.
The typical supply current is 8 mA under these conditions.