MP28258
High Efficiency, Fast Transient, 3A, 20V Synchronous Step-down Converter with Programmable Frequency
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The MP28258 is a fully-integrated, high-efficiency, synchronous, step-down, switch mode converter. It offers a very compact solution that can achieve a 3A continuous output current over a wide input supply range with excellent load and line regulation, and can operate at high efficiency over a wide output-current load range. Constant-On-Time (COT) control mode provides fast transient response and eases loop stabilization. Full protection features include SCP, OCP, OVP, UVP and, thermal shut down. The MP28258 requires a minimal number of readily-available standard external components. This device is available in a space saving 2mmx3mm 12-pin QFN package.
Product Features
- Wide 4.2V to 20V Operating Input Range
- 3A Output Current
- Low RDS(ON) Internal Power Mosfets
- Proprietary Switching Loss Reduction Technique
- Power-Good Indicator in QFN Package
- Soft Startup/Shutdown
- Programmable Switching Frequency
- SCP, OCP, UVP Protection and Thermal Shutdown
- Optional OCP Protection: Latch-Off Mode and Hiccup Mode.
- Output Adjustable From 0.815V To 13V
- Available in a QFN12 (2x3mm) Package
Parametrics
- fsw (max) (kHz)0
- Vin (min) (V)4.2
- Vin (max) (V)20
- Iout (max) (A)3
- Isw Limit (typ) (A)5
- Vfb (typ) (V)0.815
- Iq (typ) (mA)0.36
- Regulated Outputs1
- Vout (max) (V)13
- Vout (min) (V)0.815
- GradeCatalog
- PackageQFN-12 (2x3)
- Control ModeCOT
- Common FeaturesLight-Load Efficiency, Power Good, Synchronous Rectification
- Special FeaturesProgrammable Frequency
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