MP28266
Active
21V, 3A, 500kHz, Synchronous Step-Down Converter with Low Rds on, SS and AAM (LL Mode)
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The MP28266 is a synchronous, rectified, step-down, switch-mode converter with built in internal power MOSFETs. It offers a very compact solution to achieve a 3A continuous output current over a wide input supply range, with excellent load and line regulation. The MP28266 has synchronous mode operation for higher efficiency over the output-current?oad range. Current-mode operation provides a fast transient response and eases loop stabilization. Full protection features include over-current protection and thermal shutdown.?The MP28266 requires a minimal number of readily-available standard external components, and is available in a space-saving 3mm?mm 14-pin QFN package.
Product Features
- Wide 6V-to-21V Operating Input Range
- 0.6V Internal Reference with 2% Accuracy
- 3A Output Current
- Low-Rds(ON) Internal Power MOSFETs
- Fixed 500kHz Switching Frequency
- Frequency SYNC from a 300kHz-to-2MHz External Clock
- External Soft-Start
- AAM Power-Save Mode
- OCP and Thermal Shutdown
- Available in a 3mm?mm QFN14 Package.
Parametrics
- fsw (max) (kHz)500
- Vin (min) (V)6
- Vin (max) (V)21
- Iout (max) (A)3
- Isw Limit (typ) (A)5.5
- Max Duty Cycle (%)0.9
- Vfb (typ) (V)0.603
- Iq (typ) (mA)0.6
- Regulated Outputs1
- Vout (max) (V)18
- Vout (min) (V)0.6
- mps_Status1
- Mps StatusActive
- GradeCatalog
- PackageQFN-14 (3x4)
- Control ModeCurrent Mode
- Common FeaturesExternal Soft Start, Light-Load Efficiency, Synchronous Rectification
- Special FeaturesExternal Frequency Sync
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