2.5A 5.5V Synchronous Step-Down Switching Regulator
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The MP2120 is an internally compensated 1.5MHz fixed frequency PWM synchronous step-down regulator. MP2120 operates from a 2.7V to 5.5V input and generates an output voltage as low as 0.8V. The MP2120 integrates an 80mΩ high side switch and a 60mΩ synchronous rectifier for high efficiency without an external Schottky diode. With peak current mode control and internal compensation, the MP2120 based solution delivers a very compact footprint with a minimum component count. The MP2120 is available in a small 3mm x 3mm 10-lead QFN package.
Product Features
- 2.5A Output Current
- Input Operation Range: 2.7V to 5.5V
- All Ceramic Capacitor Design
- Up to 95% Efficiency
- 1.5MHz Fixed Switching Frequency
- Adjustable Output from 0.8V to 0.9xVIN
- Internal Soft Start
- Frequency Synchronization Input
- Power Good Output
- Cycle-by-Cycle Current Limiting
- Hiccup Short Circuit Protection
- Thermal Shutdown
- 3mm x 3mm 10-lead QFN Package
Parametrics
- fsw (max) (kHz)1500
- Vin (min) (V)2.7
- Vin (max) (V)5.5
- Iout (max) (A)2.5
- Isw Limit (typ) (A)4.5
- Max Duty Cycle (%)0.9
- Vfb (typ) (V)0.8
- Iq (typ) (mA)0.75
- Regulated Outputs1
- Vout (max) (V)4.95
- Vout (min) (V)0.8
- GradeCatalog
- PackageQFN-10 (3x3)
- Control ModeCurrent Mode
- Common FeaturesPower Good, Synchronous Rectification
- Special FeaturesExternal Frequency Sync
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