0
ACTIVE
Rating |
Catalog |
Topology |
Buck |
Iout (max) (A) |
4 |
Vin (max) (V) |
5.5 |
Vin (min) (V) |
2.95 |
Vout (max) (V) |
5 |
Vout (min) (V) |
0.8 |
Features |
Enable, Synchronous Rectification, Tracking |
Control mode |
Voltage mode |
Operating temperature range (°C) |
-40 to 85 |
Iq (typ) (A) |
0.0017 |
Duty cycle (max) (%) |
100 |
HTSSOP (PWP)-16-32 mm² 5 x 6.4
The LM2854 PowerWise™ buck regulator is a 500-kHz or 1-MHz step-down switching voltage regulator capable of driving up to a 4-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LM2854 can accept an input voltage rail between 2.95 V and 5.5 V, and deliver an adjustable and highly accurate output voltage as low as 0.8 V. Externally established soft-start with a small capacitor facilitates controlled start-up, and the LM2854 is capable of starting gracefully into a pre-biased output voltage. Partial internal compensation reduces the number of external passive components and PC board space typically necessary in a voltage mode buck converter application, yet preserving flexibility to deal with ceramic and/or electrolytic based load capacitors. Lossless cycle-by-cycle peak current limit is used to protect the load from an overcurrent or short-circuit fault, and an enable comparator simplifies sequencing applications. The LM2854 is available in an exposed pad HTSSOP-16 package that enhances the thermal performance of the regulator.
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