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  3. DC To DC Converters
  4. 45V, 2A, Low Iq, Synchronous Step-Down Converter with Frequency Spread Spectrum, AEC-Q100 Qualified MPQ4312-AEC1 (Monolithic Power Systems, Inc.)
45V, 2A, Low Iq, Synchronous Step-Down Converter with Frequency Spread Spectrum, AEC-Q100 Qualified MPQ4312-AEC1-MPQ4312-AEC1
45V, 2A, Low Iq, Synchronous Step-Down Converter with Frequency Spread Spectrum, AEC-Q100 Qualified MPQ4312-AEC1-Monolithic Power Systems, Inc.

45V, 2A, Low Iq, Synchronous Step-Down Converter with Frequency Spread Spectrum, AEC-Q100 Qualified MPQ4312-AEC1
Monolithic Power Systems, Inc.

Monolithic Power Systems, Inc.'s Response Status

Response Rate

100.0%

Response Time

15.6hours

Relatively Fast Response

About This Product

■Summary

The MPQ4312 is a frequency programmable synchronous step-down switching converter with internal high-side and low-side power MOSFETs (HS-FET and LS-FET, respectively). It provides high efficiency output current (IOUT) up to 2A with current mode control that allows fast loop response. A wide input voltage (VIN) range of 3.3V to 45V supports a variety of step-down applications in automotive input environments. A quiescent current in shutdown mode of 1.7μA enables the device to be used in battery-powered applications. It achieves high power conversion efficiency over a wide load range by lowering the switching frequency (fSW) under light load conditions and reducing 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. Frequency foldback helps prevent the inductor current (IL) from running out of control during start-up. Thermal shutdown provides reliable and fault-tolerant operation. Achieves high duty cycle and low dropout mode for on-board cold crank conditions. The MPQ4312 is available in a QFN-20 (4mm x 4mm) package.

■Features and benefits

・Wide operating input voltage (VIN) range from 3.3V to 45V ・2A continuous output current (IOUT) ・Low shutdown supply current (ISHDN) of 1.7μA ・18μA sleep mode quiescent current (quiescent current) ・Internal 48mΩ high side and 20mΩ low side MOSFET ・Configurable switching frequency (fSW) for car battery applications from 350kHz to 1,000kHz ・Can be synchronized with external clock ・Anti-phase synchronous clock output ・Frequency spread spectrum (FSS) for low EMI ・Symmetrical VIN for low EMI ・Power Good (PG) output ・External soft start (SS) ・Minimum on time of 100ns - Selectable advanced asynchronous modulation mode (AAM) or forced continuous conduction mode (FCCM) ・Low dropout mode

  • Product

    45V, 2A, Low Iq, Synchronous Step-Down Converter with Frequency Spread Spectrum, AEC-Q100 Qualified MPQ4312-AEC1

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1 Models of 45V, 2A, Low Iq, Synchronous Step-Down Converter with Frequency Spread Spectrum, AEC-Q100 Qualified MPQ4312-AEC1

Image Part Number Price (excluding tax) Control Mode Iout (max) (A) Iq (typ) (mA) Vfb (V) Fsw (max) (kHz) Grade Package (mm) Input voltage (max) (V) Input voltage (min) (V)
45V, 2A, Low Iq, Synchronous Step-Down Converter with Frequency Spread Spectrum, AEC-Q100 Qualified MPQ4312-AEC1-Part Number-MPQ4312-AEC1

MPQ4312-AEC1

Available upon quote

Current Mode

2

0.018

0.815

1,000

Automotive

QFN-20 (4x4)

45

3.3

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About Company Handling This Product

Monolithic Power Systems, Inc.

Response Rate

100.0%

Response Time

15.6hrs

Company Overview

Monolithic Power Systems (MPS), founded in 1997 and headquartered in San Jose, California, is a manufacturer o...

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