- 1.0 A Totem Pole Output Driver
- High Speed Oscillator (700 kHz max)
- No Stability Compensation Required
- Lossless Short Circuit Protection
- Vcc Monitor
- 2.0% Precision Reference
- Programmable Soft-Start
- Moisture Sensitivity Level 3
The LM51031 is a switching contoller for use in DC-DC converters. It can be used in the buck topology with a minimum number of external components. The LM51031 consists of a Vcc monitor for controlling the state of the device, 1.0A 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.
SOP8 & SOP8PP
The high frequency oscillator allows the use of small inductiors and output capacitors, minimizing PC board area and system cost.
The programmable Soft-Start reduces current surges at startup. The short circuit protection timer signifaicantly reduces the duth cycle to approximately 1/30 of its cycle during short circuit conditions.