The SC1152 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. Synchronous operation allows for the elimination of heat sinks in many applications. The SC1152 is ideal for implementing DC/DC converters needed to power advanced microprocessors such as Pentium ® ll (Klamath), in both single and multiple pro- cessor configurations. Internal level-shift, high-side drive circuitry, and preset shoot-thru control, allows for use of inexpensive n-channel power switches. SC1152 features include an integrated 5-bit VID DAC, temperature compensated voltage reference, triangle wave oscillator, current limit comparator, frequency shift over-current protection, and an accessible, inter- nally compensated error amplifier.
The SC1152 is a programmable synchronous DC/DC controller designed for use in single-ended power supply applications where efficiency is a primary concern. It features synchronous operation to eliminate the need for heat sinks in many applications and is ideal for implementing DC/DC converters for advanced microprocessors such as the Pentium II (Klamath) in both single and multiple processor configurations.
Key features include an integrated 5-bit Vref DAC, temperature compensated voltage reference, triangle wave oscillator, current limit comparator, frequency shift over-current protection, and accessible, internally compensated error amplifier. The device operates at a fixed 200kHz frequency, providing an optimum compromise between efficiency, external component size, and cost.
| Oscillator Frequency | 200 kHz |
|---|---|
| Supply Voltage | 4.2 to 7 V |
| Current Limit Voltage | 60 to 80 mV |
| OVP Threshold Voltage | 120 % |
| Dead Time | 50 to 100 ns |
The SC1152 operates at a fixed 200kHz frequency.
The maximum supply voltage (Vcc) is 7 V.