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BD71847AMWV-E2

BD71847AMWV-E2

Rohm Semiconductor
PMIC - Voltage Regulators - Linear Switching 12 Output Step-Down (Buck) (6), Linear (LDO) (6) 2MHz UQFN56BV7070
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Overview

The BD71847AMWV-E2 is a highly integrated Power Management IC (PMIC) designed specifically to power the i.MX 8M Mini application processor family. It integrates six buck regulators and six LDOs, providing a total of 12 regulated rails to support the SoC, DDR memory, and system peripherals from a single 2.75V to 5.5V input.

Why Choose This Part

This PMIC features a built-in 32.768 kHz crystal oscillator driver and a power button detector, reducing the need for external discrete components. It includes OTP-configurable power sequencing and hardware signaling for seamless transitions between SoC low-power states, optimizing system efficiency and thermal performance.

Applications

i.MX 8M Mini Core Power
Provides dedicated high-efficiency power rails for the VPU, GPU, and ARM Cortex-A53 cores with programmable voltage scaling.
DDR Memory Power
Supports various DDR types including LPDDR4, DDR4, and DDR3L with specific termination and VREF requirements.
IoT Edge Gateways
Serves as a compact power solution for Linux-based industrial and smart home hubs requiring small PCB footprints.
Voice-Controlled Devices
Powers the high-speed processing and audio subsystems in smart speakers and voice-assistant hardware.

Key Specifications

Topology Step-Down (Buck) (6), Linear (LDO) (6)
w/Sequencer Yes
w/LED Driver No
w/Supervisor No
Mounting Type Surface Mount
Package / Case 56-VFQFN Exposed Pad
Voltage - Supply 2.75V ~ 5.5V
Number of Outputs 12
Frequency - Switching 2MHz
Operating Temperature -40degC ~ 105degC (TA)
Supplier Device Package UQFN56BV7070
Voltage/Current - Output 1 0.7V ~ 1.3V, 3A
Voltage/Current - Output 2 0.7V ~ 1.3V, 3A
Voltage/Current - Output 3 0.7V ~ 1.35V, 3A

Getting Started

Designers should refer to the i.MX 8M Mini reference designs for recommended inductor and capacitor values for the 2MHz switching regulators. Configuration of the power rails and sequencing is handled via the I2C interface, while the UQFN56BV7070 package is optimized for Type3 PCB manufacturing processes.