MIC7401 Series

Configurable PMIC, Five-Channel Buck Regulator Plus One-Boost w/ HyperLight Load

Catalog

Configurable PMIC, Five-Channel Buck Regulator Plus One-Boost w/ HyperLight Load

Part	Supplier Device Package [x]	Supplier Device Package	Supplier Device Package [y]	Current - Output	Topology	Output Type	Voltage - Output (Min/Fixed)	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Input (Min) [Min]	Output Configuration	Package / Case	Number of Outputs	Synchronous Rectifier	Function	Voltage - Input (Max) [Max]	Frequency - Switching	Mounting Type
Microchip Technology MIC7401YFL-TR	4.5	36-FQFN	4.5	3 A 200 mA	Boost Buck	Programmable	1.05 V 1.1 V 1.25 V 1.8 V 12 V	-40 °C	125 ¯C	2.4 V	Positive	36-VFQFN Exposed Pad	6		Step-Down Step-Up	5.5 V	2 MHz	Surface Mount

Catalog

Configurable PMIC, Five-Channel Buck Regulator Plus One-Boost w/ HyperLight Load

Key Features

• * Input voltage: 2.4V to 5.5V

• * Five independent synchronous bucks up to 3A

• * One independent non-synchronous boost 200mA

• * 200µA quiescent current (all regulators on)

• * 5µA typical shutdown current

• * 93% peak buck efficiency, 85% typical efficiency at 1mA

• * Dual power mode: stand-by and normal mode

• * I2C interface up to 3.4MHz

• * Buck and boost output voltage scaling

• * Power-on-Reset (PoR) threshold and delay

• * Power-up sequencing/sequencing delay

• * Buck and boost current limit

• * Buck and boost pull-down when disabled

• * Individual ON, OFF, and stand-by modes

• * Soft-start and global power-good masking

• * 23µA buck typical quiescent current

• * 70µA boost typical quiescent current

• * 1.5% output accuracy over temperature/line/load

• * 2.0MHz boost switching frequency

• * 1.3MHz buck operation in continuous mode

• * Ultra-fast buck transient response

• * 12mm x 8.5mm x 1.25mm solution size (Top Layer)

• * Thermal-shutdown and current-limit protection

• * 36-pin 4.5mm x 4.5mm x 0.85mm FQFN package (0.4mm pitch)

• * -40°C to +125°C junction temperature range

Description

The MIC7401 is a powerful, highly integrated, configurable, power-management IC (PMIC) featuring five synchronous buck regulators, one boost regulator, and a high-speed I2C interface with an internal EEPROM.The device offers two distinct modes of operation 'stand-by mode' and 'normal mode' intended to provide an energy-optimized solution suitable for portable handheld, and infotainment applications.In normal mode, the programmable switching converters can be configured to support a variety of features, including start-up sequencing, timing, soft-start ramp, output voltage levels, current-limit levels, and output discharge for each channel. In stand-by mode the PMIC can be configured in a low power state by either disabling an output or by changing the output voltage to a lower level. Independent exit from stand-by mode can be achieved either by I2C communication or by the external STBY pin. The device has five synchronous buck regulators with high-speed adaptive on-time control that supports even the most challenging ultra-fast transient requirement for core supplies. One boost regulator provides a flash-memory programming supply that delivers up to 200mA of output current. The boost is equipped with an output disconnect switch that opens if a short-to-ground fault is detected.An internal EEPROM enables a single-chip solution across many platforms by allowing the designer to customize the PMIC for their design. Modifications can be made without the need to re-approve a new PMIC, saving valuable design resources and time. All switchers provide light-load efficiency with HyperLight Load® mode for buck and PFM mode for boost. An additional benefit of this proprietary architecture is very-low output ripple voltage throughout the entire load range with the use of small output capacitors. The MIC7401 is designed for use with a small inductors (down to 0.47µH for buck, 1.5µH for boost), and an output capacitor as small as 10µF for buck, enabling a total solution size of 12mm x 8.5mm and less than 1mm height on the top layer.