PM6685 is a dual step-down controller specifically designed to provide auxiliary voltages for notebook system power. It features a 6V to 28V input voltage range, fixed 5V and 3.3V output voltages, 100mA peak current delivery, 1.230V±1% reference voltage, and more.
The PM6685 is a dual step-down controller specifically designed to provide high efficiency conversion with loss-less current sensing technique. It features a constant on-time architecture for fast load transient response and embedded voltage feed-forward for nearly constant switching frequency operation. The device includes selectable pulse skipping at light loads and a minimum switching frequency of 33 kHz to avoid audio noise issues.
| Input voltage range | 6 V to 28 V |
|---|---|
| Output voltages | 5 V - 3.3 V |
| Peak current | 100 mA |
| Reference voltage | 1.230 V |
| Soft-start time | 2 ms |
| Quiescent power | 4 mW |
| Minimum switching frequency | 33 kHz |
| Power dissipation | 2 W |
| Operating temperature | -10 to 125 °C |
The device supports an input voltage range from 6 V to 28 V.
The controller provides fixed 5 V and 3.3 V output voltages.
It uses lossless current sensing using low side MOSFETs' Rds(on).
The soft-start is internally fixed at 2 ms.