NXP Semiconductors MC34708VKR2

Overview

MC34708VKR2 from NXP Semiconductors (formerly Freescale) is a Power Management Integrated Circuit (PMIC) engineered for i.MX50 and i.MX53 application processors. It integrates six multi-mode buck regulators, one boost regulator (380 mA), eight LDOs, 10-bit ADC, RTC with coin-cell backup/charger, SPI/I²C interface, and USB/UART/audio switching logic. It delivers precise power sequencing and monitoring for portable smart devices.

For engineers reviewing the MC34708VKR2 datasheet, MC34708VKR2 pinout, MC34708VKR2 application, or MC34708VKR2 equivalent, key selection criteria include its 206-ball MAPBGA (8.0 × 8.0 mm, 0.5 mm pitch), -40°C to +85°C operating range, integrated thermal warning detection, and support for DDR memory VREF regulation and touch-screen interface.

Technical Context

The MC34708VKR2 implements a hierarchical power tree with five synchronous buck regulators (SW1–SW5), including dual-phase DDR buck (SW4), plus a dedicated 380 mA boost regulator (SWBST) for USB OTG. Its startup sequencer enforces configurable power-up/down timing across rails, while internal trim-in-package circuitry ensures voltage accuracy without external calibration.

Control is executed via SPI or I²C, with register-mapped configuration of modes (e.g., DVS, LP), powergood monitoring (SW1PWGD, SW2PWGD), interrupt generation (INT), and real-time clock operation backed by LICELL. The device uses SMARTMOS technology and features dedicated analog ground (GNDACHRG), core ground (GNDCORE), and regulator-specific ground planes (GNDREG1/GNDREG2) for noise isolation.

Key Specifications

Pinout & Package

MC34708VKR2 is housed in a 206-ball MAPBGA package (8.0 × 8.0 mm, 0.5 mm pitch), optimized for thermal dissipation and signal integrity in space-constrained mobile designs. Ballmap follows JEDEC MO-270 standard with defined power, ground, analog, digital, and interface ball groups.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PMIC applications.

Compared with MC34708VMR2 and PF3000, the MC34708VKR2 offers optimal fit for production i.MX50/53 systems requiring minimal PCB area, proven reliability, and full legacy software support - its 8 mm × 8 mm footprint and exact register mapping make it irreplaceable in existing designs.

Availability

MC34708VKR2 is available at Aetrix Electronics and suitable for smart mobile devices, tablets, and portable navigation devices requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for MC34708VKR2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.

The MC34708VKR2 belongs to NXP's SMARTMOS PMIC product line, designed specifically to deliver complete, validated power solutions for Freescale/NXP i.MX application processors - emphasizing integration, thermal robustness, and seamless SoC interface.

FAQ

What is the primary application target for the MC34708VKR2?

The MC34708VKR2 is explicitly designed for use with NXP i.MX50 and i.MX53 application processors. It provides fully sequenced, monitored, and regulated power to the processor core, DDR memory, USB OTG, audio subsystem, and peripheral interfaces - making it essential for smart mobile devices, tablets, and portable navigation units built around those SoCs.

Does the MC34708VKR2 support battery charging functionality?

No, the MC34708VKR2 does not support battery charging. Per the official datasheet (Rev. 11.0, Section 4.2), pins related to charging (e.g., VBUSVIN, CHRGLX, CHRGFB, GOTG, GAUX) are marked "NC" and "Charger Not supported." The device monitors battery voltage and current but relies on external circuitry for charging.

What is the function of the PUMS1–PUMS5 pins on the MC34708VKR2?

The PUMS1–PUMS5 pins on the MC34708VKR2 configure the power-up sequencing mode and timing delays during startup. These inputs determine the order and delay intervals between activation of different regulator rails (e.g., VCORE before VREFDDR), ensuring safe and compliant initialization of the i.MX50/53 processor and its associated memory and peripherals.

Can the MC34708VKR2 be used with i.MX6 or later processors?

No, the MC34708VKR2 is not recommended for i.MX6 or later processors. It was architected specifically for i.MX50/53 power trees and register-level control. Newer SoCs like i.MX6 require different voltage rails, sequencing, and feature sets - addressed by successors such as the PF3000, which is incompatible at both hardware and firmware levels with the MC34708VKR2.

What package variant does the MC34708VKR2 use, and how does it differ from MC34708VMR2?

The MC34708VKR2 uses a 206-ball MAPBGA package measuring 8.0 × 8.0 mm with 0.5 mm pitch. In contrast, MC34708VMR2 uses the same die in a larger 13 × 13 mm MAPBGA with 0.8 mm pitch. The VK suffix denotes the smaller, higher-density variant optimized for compact mobile PCBs, while VM offers easier assembly at the cost of board area.