Gehäuseinformationen
| Gehäuse | Pins HTSSOP (PWP) | 16 |
| Betriebstemperaturbereich (°C) -40 to 85 |
| Gehäusemenge | Träger 2.500 | LARGE T&R |
Merkmale von LM2854
- 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-mΩ 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
Beschreibung von LM2854
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.