The CS51031 is a switching controller for use in DC–DC converters. It can be used in the buck topology with a minimum number of external components. The CS51031 consists of a VCC monitor for controlling the state of the device, 1.0 A power driver for controlling the gate of a discrete P–channel transistor, fixed frequency oscillator, short circuit protection timer, programmable soft start, precision reference, fast output voltage monitoring comparator, and output stage driver logic with latch. The high frequency oscillator allows the use of small inductors and output capacitors, minimizing PC board area and systems cost. The programmable soft start reduces current surges at start up. The short circuit protection timer significantly reduces the duty cycle to approximately 1/30 of its cycle during short circuit conditions. The CS51031 is available in an 8 Lead SO plastic package.
The CS51031 is a switching controller designed for use in DC-DC buck converters with a minimum number of external components. It features a 1.0 A power driver for controlling the gate of a discrete P-channel transistor, a fixed frequency oscillator, and short circuit protection. The device operates without requiring stability compensation and includes a programmable soft start to reduce current surges.
| Peak Output Current | 1.0 A |
|---|---|
| Maximum Duty Cycle | 80% |
| Operating Temperature Range (Industrial) | -40 to 85 °C |
| Oscillator Frequency (Typical) | 200 kHz |
| Package Type | 8 Lead SO plastic package |
No, the control method does not require any loop stability compensation.
The maximum duty cycle is limited to 80%.
No, it features lossless short circuit protection since no current sense resistor is required.