The LM2727/LM2737 N-Channel FET Synchronous Buck Regulator Controller for Low Output Voltages is a high-performance, synchronous switching regulator controller released by Texas Instruments. It adopts a fixed-frequency, voltage-mode, PWM control architecture and can adjust the switching frequency from 50kHz to 2MHz by adjusting an external resistor. The device uses non-overlapping MOSFET gate drivers and a high-side bootstrap structure to further improve efficiency. The input power is 2.2V to 16V and the output voltage can be adjusted to 0.6V.
The LM2727 and LM2737 are high-speed, synchronous switching regulator controllers designed to control currents of 0.7A to 20A with up to 95% conversion efficiency. The LM2727 features output over-voltage and under-voltage latch-off, while the LM2737 uses flags for these conditions instead. Both devices operate from a low-current 5V bias and can convert power rails ranging from 2.2V to 16V.
| Input power range | 2.2V to 16V |
|---|---|
| Output voltage adjustable down to | 0.6V |
| Current limit range | 0.7A to 20A |
| Conversion efficiency | up to 95% |
| Reference Accuracy | 1.5% |
| Switching frequency range | 50 kHz to 2 MHz |
| Package type | TSSOP-14 |
The LM2727 employs output over-voltage and under-voltage latch-off, whereas the LM2737 uses flags for these conditions.
The high-side power FET drain voltage can be from 2.2V to 16V.
The output voltage is adjustable down to 0.6V.