MPQ8861-AEC1 0.6-1.108V, 12A, 1.25MHz Synchronous Step-Down Converter QFN-14

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MPQ8861-AEC1 0.6-1.108V, 12A, 1.25MHz Synchronous Step-Down Converter QFN-14

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pMPS MPQ8861-AEC1 — synchronous step-down converter, 0.6-1.108V input, 12A output, 1.25 MHz, QFN-14./p

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Automotive AEC-Q100 DC-DC converter MPS Buck Converter Step-Down Converter QFN-14

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MPQ8861-AEC1 0.6-1.108V, 12A, 1.25MHz Synchronous Step-Down Converter QFN-14

MPS MPQ8861-AEC1 is a synchronous step-down converter that accepts 0.6 V to 1.108 V input, delivers 12 A, switches at 1.25 MHz, supplied in a QFN-14 package.

Key Specifications

Part Number	MPQ8861-AEC1
Input Voltage	0.6 V to 1.108 V
Output Voltage	0.6 V to 5.5 V
Output Current	12 A
Switching Frequency	1.25 MHz
Topology	Synchronous Step-Down Converter
Package	QFN-14
Ordering Codes	MPQ8861-AEC1

Features

0.6V to 5.5V Output Voltage (VOUT) Range
2.9V to 18V Input Voltage (VIN) Range
12A DC Output Current (IOUT)
1% Internal Reference Accuracy
4mV Steps for Dynamic Reference Adjustments with Slew Rate Control
Up to 1.25MHz Adjustable Frequency via the I2C
Selectable Pulse-Frequency Modulation (PFM) Mode, Pulse-Width Modulation (PWM) Mode, and Adjustable Current Limit via the I2C
Four Different Selectable I2C Addresses
Power Good (PG) Indication Output
Over-Voltage Protection (OVP), Over- Current Protection (OCP), and Thermal Shutdown Protection

Applications

Automotive Systems

Design Notes

The step-down topology needs an inductor and output capacitor sized for the ripple at the switching frequency, not just the DC load.
Keep the input loop short — high di/dt at the switch node sets conducted EMI.
Power switches are integrated, so the thermal path is the PCB copper under the pad.
AEC-Q100 qualification suits this part to automotive rails.
Package QFN-14 — check the land pattern in the datasheet before layout.