MP28265

NOT RECOMMENDED FOR NEW DESIGNS

21V, 5A, 1.1MHz Synchronous Step-down Converter

ALTERNATIVE PART

NRFND Datasheet

MP28265 continues to be in production for existing customers. Please consider this alternative for new designs:

MP2329GG-Z

4.5 to 24V, 6.5A, Low IQ, Synchronous Buck Converter

Features & Benefits

Wide 4.5V to 24V Operating Input Range
105μA Low Quiescent Current
6.5A Continuous Output Current
7.5A Peak Output Current
Adaptive Constant-On-Time (COT) Control for Fast Transient
DC Auto-Tune Loop
Low R_DS(ON) Internal Power MOSFETs
Proprietary Switching Loss Reduction Technique
Power Good (PG) Indication
Fixed 700kHz Switching Frequency
Stable with POSCAP and Ceramic Capacitors
Internal Soft Start (SS)
Output Discharge
OCP, OVP, UVP, and Thermal Shutdown with Auto-Retry
Available in a QFN-11 (2mmx2mm) Package
The MPL-AL6050 Inductor Series Matches Best Performance

… and many more!

Parameters Description

Vin (min) (V)
4.5
Vin (max) (V)
21
Iout (max) (A)
5
Iq (typ) (mA)
0.7
Vfb (V)
0.805
fsw (max) (kHz)
1100
Control Mode
Current Mode
Package (mm)
QFN-14 (3x4)
Grade
Catalog
Regulated Outputs
1
Vout (min) (V)
0.8
Isw Limit (typ) (A)
6
Max Duty Cycle (%)
0.9

The MP28265 is a high frequency synchronous rectified step-down switch mode converter with built in internal power MOSFETs. It offers a very compact solution to achieve 5A continuous output current over a wide input supply range with excellent load and line regulation. The MP28265 operates at high efficiency over a wide output current load range. Current mode operation provides fast transient response and eases loop stabilization. Full protection features include OCP and thermal shut down. The MP28265 requires a minimum number of readily available standard external components and is available in a space saving 3mm x 4mm 14-pin QFN package.