MPQ7920 datasheet(5/44 Pages) MPS

5 / 44 page

MPQ7920

– 5V POWER MANAGEMENT IC WITH I2C AND MTP, AEC-Q100

MPQ7920 Rev. 1.0

www.MonolithicPower.com

7/13/2020

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

PIN FUNCTIONS (continued)

Pin #

Name

Description

OUT4

LDO4 output. LDO4 is powered by VIN5.

VIN5

LDO4 and LDO5 power input pin. This pin operates from a 2.7V to 5.5V input voltage.

OUT5

LDO5 output. LDO5 is powered by VIN5.

FB4

Buck 4 feedback. Directly connect b

uck 4’s output to this pin.

VIN4

Buck 4 supply voltage input. The MPQ7920 operates from a 2.7V to 5.5V input rail. It

requires a ceramic capacitor to decouple the input rail. Connect using a wide PCB trace.

VIN1, VIN2, VIN3, VIN4, and AVIN must be connected to the same bus voltage.

SW4

Buck 4 switch output. Connect using a wide PCB trace.

GND2

Buck 2 and buck 4 power ground. This pin requires special consideration during PCB

layout. Connect to GND with copper traces and vias.

SW2

Buck 2 switch output. Connect using a wide PCB trace.

VIN2

Buck 2, LDORTC, LDO2, and LDO3 supply voltage input. The MPQ7920 operates

from a 2.7V to 5.5V input rail. It requires a ceramic capacitor to decouple the input rail.

Connect using a wide PCB trace. VIN1, VIN2, VIN3, VIN4, and AVIN must be connected

to the same bus voltage.

FB2

Buck 2 feedback. Directly connect b

uck 2’s output to this pin.

OUT3

LDO3 output. LDO3 is powered by VIN2.

OUT2/EN1

LDO2 output or EN1. LDO2 is powered by VIN2. When configuring this pin as EN1, it

acts as an input pin. Pull EN1 up or down to enable or disable the MPQ7920,

respectively.

OUTRTC

RTC LDO output. This LDO is powered by VIN2.

AGND

Analog ground. Connect this pin to GND1 and GND2.

AVIN

Power supply input for logic circuitry. Bypass this pin with a 0.1µF ceramic capacitor

to AGND. Connect AVIN to the system input through a 4.7

Ω resistor. VIN1, VIN2, VIN3,

VIN4, and AVIN must be connected to the same bus voltage.

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