The LM2854 is a 500kHz or 1MHz synchronous simple switch buck regulator capable of driving up to a 4A load with exceptional power conversion efficiency, line and load regulation, and output accuracy.
The LM2854 PowerWise® SIMPLE SWITCHER® buck regulator is a step‑down switching voltage regulator that can deliver up to 4 A with high efficiency. It operates from an input voltage of 2.95 V to 5.5 V and offers a selectable switching frequency of 500 kHz or 1 MHz, with an adjustable output as low as 0.8 V.
The document provides a complete description of the device, including features, pin descriptions, absolute maximum and operating ratings, electrical characteristics, typical performance curves, efficiency graphs, and physical dimensions. Ordering information, connection diagrams, and typical application circuits are also included to aid designers in implementing the regulator.
| Input voltage range | 2.95 V to 5.5 V |
|---|---|
| Maximum load current | 4 A |
| Switching frequency options | 500 kHz or 1 MHz |
| Standby current | 230 pA |
| Enable pin hysteresis | 150 mV |
The LM2854 accepts an input voltage between 2.95 V and 5.5 V.
It can supply up to 4 A of load current.
The device operates at either 500 kHz or 1 MHz, selectable by the part number.
The standby (quiescent) current is 230 pA.