MP2403

MP2403

NOT RECOMMENDED FOR NEW DESIGNS

4.6V to 32V, 250kHz, 3A Sync Buck with External , Comp and External SS

ALTERNATIVE PART

NRFND Datasheet

MP2403 continues to be in production for existing customers. Please consider this alternative for new designs:

MP9943GQ-Z

High Efficiency 3A Peak, 36V, Synchronous Step Down Converter with Power Good

Features & Benefits

Wide 4V to 36V Continuous Operating Input Range
85mO/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
Internal Power-Save Mode
Internal Soft-Start
Power Good Indicator
Over Current Protection and Hiccup
Thermal Shutdown
Output Adjustable from 0.8V
Available in an QFN-8 (3mmx3mm) package

… and many more!

Parameters Description

Vin (min) (V)
4.6
Vin (max) (V)
32
Iout (max) (A)
3
Iq (typ) (mA)
1.45
Vfb (V)
0.8
fsw (max) (kHz)
250
Control Mode
Current Mode
Package (mm)
SOIC-8N
Grade
Catalog
Regulated Outputs
1
Vout (min) (V)
0.8
Vout (max) (V)
28
Isw Limit (typ) (A)
5.3
Max Duty Cycle (%)
0.9

The MP2403 is a monolithic synchronous buck regulator. The device integrates a 150mΩ high side MOSFET and a 80mΩ low side MOSFET that provide 3A continuous load current over a wide operating input voltage of 4.6V to 32V. Current mode control provides fast transient response and cycle-by-cycle current limit. An adjustable soft-start prevents inrush current at turn-on. In shutdown mode, the supply current drops to 1μA. This device, available in an 8-pin SOIC package, provides a very compact system solution with minimal reliance on external components.