MP2451
Active
36V, 2MHz, 0.6A Step-Down Converter

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The MP2451 is a high frequency (2MHz) step-down switching regulator with integrated internal high-side high voltage power MOSFET. It provides single 0.6A (or less) highly efficient output with current mode control for fast loop response. The wide 3.3V to 36V input range accommodates a variety of step-down applications in automotive input environment. A 1? shutdown mode quiescent current allows use in battery-powered applications. High power conversion efficiency over a wide load range is achieved by scaling down the switching frequency at light load condition to reduce the switching and gate driving losses. Frequency fold-back helps prevent inductor current runaway during start-up. Thermal shutdown provides reliable, fault-tolerant operation. The MP2451 is available in the cost-effective SOT23-6 and TSOT23-6 packages.
Product Features
- 130? Operating Quiescent Current
- Wide 3.3V to 36V Operating Input Range
- 500mO Internal Power MOSFET
- 2MHz fixed Switching Frequency
- Internally Compensated
- Stable with Ceramic Output Capacitors
- Internal Soft-Start
- Precision Current Limit Without Current Sensing Resistor
- >90% Efficiency
- Output Adjustable from +0.8V to 0.8xVIN
- Low Shutdown Mode Current: <1uA
- SOT23-6 and TSOT23-6 Packages
Parametrics
- fsw (max) (kHz)2000
- Vin (min) (V)3.3
- Vin (max) (V)36
- Iout (max) (A)0.6
- Isw Limit (typ) (A)1
- Vfb (typ) (V)0.794
- Iq (typ) (mA)0.13
- Regulated Outputs1
- Vout (max) (V)29
- Vout (min) (V)0.8
- mps_Status1
- Mps StatusActive
- GradeCatalog
- PackageSOT23-6L
- Control ModeCurrent Mode
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