MP4312GRE-P

MP4312 is a configurable-frequency, synchronous step-down switching converter with integrated internal high-side and low-side power MOSFETs (HS-FET and LS-FET, respectively). It provides up to 2A of highly efficient output current (IOUT) with current mode control for fast loop response. The wide 3.3V to 45V input voltage (VIN) range accommodates a variety of step-down applications in automotive input environments. High power conversion efficiency across a wide load range is achieved by scaling down the switching frequency (fSW) under light-load conditions to reduce the switching and gate driver losses. An open-drain power good (PG) signal indicates whether the output is within 95% to 105% of its nominal voltage. High-duty cycle and low-dropout mode are provided for automotive cold-crank conditions. The MP4312 is available in a QFN-20 (4mmx4mm) package. Applications include radios, battery-powered systems, general-purpose consumer applications and industrial power systems.

• 45V, 2A, low IQ, synchronous step-down converter with frequency spread spectrum
• 18μA sleep mode quiescent current (IQ), 1.7μA low shutdown current (ISD)
• Internal 48mohm/20mohm high-side and low side MOSFETs (HS-FET and LS-FET)
• 350KHz to 1000KHz configurable switching frequency (fSW) for car battery applications
• Can be synchronized to an external clock, out-of-phase synchronized clock output
• Frequency spread spectrum for low EMI, thermal shutdown provides reliable, fault-tolerant operation
• Symmetric VIN for low EMI, power good (PG) output, external soft start (SS)
• 100ns minimum on time (tON-MIN), low-dropout (LDO) mode
• Selectable advanced asynchronous modulation (AAM) mode or forced continuous conduction mode (FCCM)
• Overcurrent protection (OCP) with hiccup mode, frequency foldback

Notes

MPS part numbers ending in "-P" and "-Z" are the same parts. P & Z only indicates reel size.