The PM8903 is a high-efficiency monolithic step-down switching regulator designed to deliver up to 3A continuous current. It features high efficiency, a wide input voltage range of 2.8V to 6V, adjustable output voltage down to 0.6V, and more.
The PM8903 is a high-efficiency monolithic step-down switching regulator designed to deliver up to 3 A of continuous output current. It operates with an input voltage range of 2.8 V to 6 V and features low-resistance integrated nMOS power switches. The device includes a proprietary pulse-skipping mode to optimize efficiency across all loading ranges and offers adjustable output voltage down to 0.6 V with 1% accuracy.
| Continuous output current | 3 A |
|---|---|
| Input voltage range | 2.8 V to 6 V |
| Supply voltage range | 2.9 V to 5.5 V |
| Switching frequency | 1.1 MHz |
| Output voltage accuracy | 1% |
| Minimum output voltage | 0.6 V |
| HS MOSFET RDS(on) | 35 mΩ |
| Maximum junction temperature | 150 °C |
| Package type | VFQFPN16 3 x 3 mm |
The switching frequency is typically set to 1.1 MHz and can be programmed to 0.8 MHz or 1.0 MHz.
Yes, it supports interleaving synchronization with up to 2 ICs to reduce input RMS current.
The quiescent current is less than 15 μA when the shutdown function is active.