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Award-winning SIMPLE SWITCHER DC/DC converters deliver robust power supplies with the minimum set of external components. All SIMPLE SWITCHER products work with the enhanced WEBENCH Power Designer end-to-end design and prototyping tools.
LM285x Synchronous SIMPLE SWITCHER Regulator Series
The LM285x series of SIMPLE SWITCHER® buck regulators support switching frequencies from 500kHz to 1.5MHz and can drive up to a 4A load with exceptional power conversion efficiency, line and load regulation, and output accuracy. The LM285x series can accept an input voltage rail between 2.85V and 5.5V to deliver an adjustable and highly accurate output voltage as low as 0.8V.
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.
While both the LM2852 and LM2853 feature internal type-three compensation thus greatly simplifying external component selection, the LM2854 features partial internal compensation to preserve flexibility in using ceramic and/or electrolytic based load capacitors. All members of the LM285x series are available in exposed pad TSSOP packaging that enhances the thermal performance of the regulator.
Features
- Voltage Mode control
- Up to 4A load current
- Switching frequencies up to 1.5MHz
- Low standby current consumption
- Integrated switches
- Output voltage from 0.8V to 4.5V
- Pre-biased capability (LM2854 only)
- Thermally enhanced exposed pad TSSOP packaging
Product Information
| Product ID | VIn (V) | VOut (V) | IOut (A) | Frequency |
| LM2852 | 2.85 - 5.5 | 0.8 - 3.3 | 2.0 | 500kHz or 1.5MHz |
| LM2853 | 3.0 - 5.5 | 0.8 - 3.3 | 3.0 | 550kHz |
| LM2854 | 2.95 - 5.5 | 0.8 - 4.5 | 4.0 | 500kHz or 1MHz |
Design Resources
App Notes
- Voltage-Mode Control and Compensation: Intricacies for Buck Regulators
- AN-1343 - LM2852 Evaluation Board (500kHz version)
- AN-1880 - LM2854 1MHz SIMPLE SWITCHER Buck Regulator Demo Board
- AN-1513 - LM2853 Evaluation Board
- AN-1397 - LM2852X Demonstration Board
- AN-1786 - LM2854 500 kHz Buck Regulator Evaluation Board
- AN-1821 - CPRI Repeater System
- PD-105 - Power Management Design for Applications Processors
- AN-1973 - Benefits and Challenges of High-Frequency Regulators (for Space-Constrained Applications)
Videos
PDF Selection Guides
- SIMPLE SWITCHER Family Brochure
- SIMPLE SWITCHER Design Guide
- Power Module Benefits by End Application:




