All trademarks are the property of their respective owners.
DescriptionThe LM2854MH-500/NOPB PowerWise? buck regulatoris a 500-kHz or 1-MHz step-down switching voltage regulator capable of driving up to a 4-A loadwith exceptional power conversion efficiency, line and load regulation, and output accuracy. TheLM2854MH-500/NOPB can accept an input voltage rail between 2.95 V and 5.5 V, and deliver an adjustable andhighly accurate output voltage as low as 0.8 V. Externally established soft-start with a smallcapacitor facilitates controlled start-up, and the LM2854MH-500/NOPB is capable of starting gracefully into apre-biased output voltage. Partial internal compensation reduces the number of external passivecomponents and PC board space typically necessary in a voltage mode buck converter application, yetpreserving flexibility to deal with ceramic and/or electrolytic based load capacitors. Losslesscycle-by-cycle peak current limit is used to protect the load from an overcurrent or short-circuitfault, and an enable comparator simplifies sequencing applications. The LM2854MH-500/NOPB is available in anexposed pad HTSSOP-16 package that enhances the thermal performance of the regulator.
Feature
- Input Voltage Range of 2.95 V to 5.5 V
- Maximum Load Current of 4 A
- Wide Bandwidth Voltage Mode Control Loop, Partial Internal Compensation
- Fixed Switching Frequency of 500 kHz or 1 MHz
- 35-m? Integrated MOSFET Switches
- Adjustable Output Voltage Down to 0.8 V
- Optimized Reference Voltage Initial Accuracy and Temperature Drift
- External Soft-Start Control With Tracking Capability
- Enable Pin With Hysteresis
- Low Standby Current of 230 μA
- Pre-Biased Load Start-up Capability
- Integrated UVLO, OCP, and Thermal Shutdown
- 100% Duty Cycle Capability
- HTSSOP-16 Exposed Pad Package
All trademarks are the property of their respective owners.
DescriptionThe LM2854 PowerWise? buck regulatoris a 500-kHz or 1-MHz step-down switching voltage regulator capable of driving up to a 4-A loadwith exceptional power conversion efficiency, line and load regulation, and output accuracy. TheLM2854 can accept an input voltage rail between 2.95 V and 5.5 V, and deliver an adjustable andhighly accurate output voltage as low as 0.8 V. Externally established soft-start with a smallcapacitor facilitates controlled start-up, and the LM2854 is capable of starting gracefully into apre-biased output voltage. Partial internal compensation reduces the number of external passivecomponents and PC board space typically necessary in a voltage mode buck converter application, yetpreserving flexibility to deal with ceramic and/or electrolytic based load capacitors. Losslesscycle-by-cycle peak current limit is used to protect the load from an overcurrent or short-circuitfault, and an enable comparator simplifies sequencing applications. The LM2854 is available in anexposed pad HTSSOP-16 package that enhances the thermal performance of the regulator.
