The SC1144 is a programmable, high-performance multi-phase PWM controller designed for high-power microprocessors. It features ultra-fast transient recovery time, a wide high-frequency operating range, selectable 2, 3, or 4 phase operation, floating feedback ground for remote sensing, precision load current sharing, selectable internal or external clock, soft start, over-current protection, and a 5-bit DAC programmable output with programmable clock ranging from 200Khz to 2Mhz per phase.
The SC1144 is a high-performance, multi-phase PWM controller designed for high-power microprocessors requiring ultra-fast transient response, such as the Pentium II and beyond. It utilizes a unique design to distribute the output load across up to four converter channels by digitally phase-shifting the PWM outputs, which reduces stress on components and lowers input ripple current.
Key features include selectable 2, 3, or 4-phase operation, a programmable output voltage via a 5-bit DAC, and the ability to use either an internal or external clock. The device also offers soft-start capability, over-current protection, and a floating feedback ground for remote sensing.
| Operating Temperature Range | 0 to +70 °C |
|---|---|
| Junction Temperature Range | 0 to +125 °C |
| Maximum Clock Frequency | 8 MHz |
| Number of Phases | Up to 4 |
| Output Voltage Resolution | 5-bit DAC |
| Package Type | 24-Pin SOIC |
It is designed for high-power microprocessors requiring ultra-fast transient response, such as the Pentium II and beyond.
The controller supports selectable 2, 3, or 4-phase operation.
Yes, the output voltage is digitally programmable using a 5-bit DAC.