MP9942A
Active
High Efficiency 2A, 36V, 410kHz Synchronous Step-Down Converter with Power Good
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The MP9942A is a high-frequency, synchronous, rectified, step-down, switch-mode converter with built-in power MOSFETs. It offers a very compact solution to achieve a 2A continuous output current with excellent load and line regulation over a wide input supply range. The MP9942A has synchronous mode operation for higher efficiency over the output current load range. Current-mode operation provides fast transient response and eases loop stabilization. Full protection features include over-current protection and thermal shutdown. The MP9942A requires a minimal number of readily-available standard external components, and is available in a space-saving 8-pin TSOT23 package.
Product Features
- Wide 4V to 30V Continuous Operating Input Range
- 36V Input Transient Tolerance
- 90mO/55mO Low RDS(ON) Internal Power MOSFETs
- High-Efficiency Synchronous Mode Operation
- 410kHz Switching Frequency
- Synchronizes from 200kHz to 2.2MHz External Clock
- High Duty Cycle for Automotive Cold-crank
- Force CCM Mode
- Internal Soft-Start
- Power Good Indicator
- Over-Current Protection with Hiccup
- Thermal Shutdown
- Output Adjustable from 0.8V
- Available in an 8-pin TSOT-23 package
Parametrics
- fsw (max) (kHz)410
- Vin (min) (V)4
- Vin (max) (V)30
- Iout (max) (A)2
- Isw Limit (typ) (A)5
- Max Duty Cycle (%)0.95
- Vfb (typ) (V)0.792
- Iq (typ) (mA)0.5
- Regulated Outputs1
- Vout (max) (V)28.5
- Vout (min) (V)0.8
- GradeCatalog
- PackageTSOT23-8
- Control ModeCurrent Mode
- Common FeaturesForced CCM, Power Good, Synchronous Rectification
- Special FeaturesExternal Frequency Sync
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