The SC1157 is a programmable synchronous DC/DC controller designed for single-ended power supply applications. It is low-cost and efficient, making it ideal for powering advanced microprocessors such as Pentium II.
The SC1157 is a low-cost, full-featured synchronous voltage-mode controller designed for use in single-ended power supply applications where efficiency is of primary concern. It is ideal for implementing DC/DC converters needed to power advanced microprocessors such as Pentium II (Klamath) in both single and multiple processor configurations. The device features an integrated 4-bit V, DAC, temperature compensated voltage reference, triangle wave oscillator, current limit comparator, frequency shift over-current protection, and an internally compensated error amplifier.
| Oscillator Frequency | 140 kHz |
|---|---|
| Supply Voltage | 4.5 V |
| Supply Current | 15 mA |
| Dead Time | 50 ns |
It is designed for use in single-ended power supply applications where efficiency is of primary concern.
Yes, it is designed to meet Intel VRM8.2 (Pentium II) specifications.
The maximum duty cycle is 95%.