NXP Semiconductors MC34PF3000A4EP

Overview

MC34PF3000A4EP from NXP Semiconductors is a power management IC (PMIC) engineered for i.MX 6SX application processors with DDR3 memory, delivering four buck regulators (SW1A/B up to 2.75 A combined, SW2 at 1.25 A, SW3 at 1.5 A), six LDOs including V33 (350 mA) and VCC_SD (100 mA), and integrated DDR reference (VREFDDR) with 0.5×VDDR scaling. It supports dynamic voltage scaling, OTP-programmable startup sequencing, and operates from 2.8–4.5 V or 3.7–5.5 V input.

For engineers reviewing the MC34PF3000A4EP datasheet, MC34PF3000A4EP pinout, MC34PF3000A4EP application, or MC34PF3000A4EP equivalent, key selection criteria include its pre-programmed OTP configuration for i.MX 6SX + DDR3, 48-pin QFN wettable flank package, I²C programmability, coin-cell backup support, and compatibility with industrial temperature range (−40 °C to +105 °C).

Technical Context

The MC34PF3000A4EP implements a multi-rail architecture optimized for i.MX 6SX SoCs: SW1A and SW1B can operate independently (1.0 A / 1.75 A) or in parallel (2.75 A) to supply core logic, while SW2 and SW3 target SOC I/O and memory domains with programmable output ranges (e.g., SW2: 1.50–1.85 V or 2.50–3.30 V). Its OTP memory stores regulator voltages, startup timing, PWRON edge/level configuration, and I²C address (0x08–0x0F), eliminating external configuration components.

Control logic integrates direct interface signals-PWRON (debounce-configurable), STANDBY (active-high/low selectable), RESETBMCU (fault-aware or timer-based), INTB (open-drain fault interrupt), and SD_VSEL (dual-voltage VCC_SD selection)-alongside I²C for runtime reconfiguration. The VSNVS rail provides always-on 3.0 V @ 1.0 mA for secure real-time clock, and VREFDDR delivers precision 0.5×SW3_OUT for DDR3 termination.

Key Specifications

Pinout & Package

MC34PF3000A4EP uses a 48-pin QFN package (98ASA00933D), 7.0 mm × 7.0 mm with wettable flanks for enhanced solder joint inspection and thermal performance. Exposed pad (EP) serves as ground return for buck/boost regulators and must be connected to internal/external ground planes via multiple vias.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC33PF3000A4ES and MC34PF3000A3EP, the MC34PF3000A4EP uniquely combines industrial temperature qualification, full coin-cell charger support, and DDR3-specific OTP calibration-making it the sole fit for ruggedized i.MX 6SX systems using standard DDR3 memory and battery-backed RTC.

Availability

MC34PF3000A4EP is available at Aetrix Electronics and suitable for POS terminals, industrial control panels, and home security gateways requiring stable component supply, long-term lifecycle assurance, and industrial-grade thermal performance.

Supply support for MC34PF3000A4EP 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The PF3000 product line delivers highly integrated, application-processor-specific PMICs for NXP's i.MX family, reducing system complexity through OTP-configurable power trees and optimized rail sequencing for DDR memory and heterogeneous compute cores.

FAQ

What is the primary application processor compatibility for the MC34PF3000A4EP?

The MC34PF3000A4EP is specifically OTP-programmed for the NXP i.MX 6SX application processor with standard DDR3 memory. Its startup sequence, voltage ranges (e.g., SW2 for DDR3 I/O), and VREFDDR scaling are calibrated for this exact configuration-not DDR3L, LPDDR2, or i.MX 7 variants. Using it with other processors requires full I²C reconfiguration and validation.

Does the MC34PF3000A4EP support coin-cell backup, and how is it implemented?

Yes, the MC34PF3000A4EP supports coin-cell backup via the LICELL pin (Pin 36), which functions as both input and output. When a coin cell is connected, it powers the VSNVS rail (3.0 V @ 1.0 mA) to maintain RTC and secure non-volatile state during main power loss. The internal charger circuit conditions the coin cell voltage and prevents over-discharge, ensuring >10-year backup life under typical conditions.

How does the PWRON pin function on the MC34PF3000A4EP, and can its behavior be modified?

The PWRON pin (Pin 48) initiates power-on sequences and supports configurable edge- or level-sensitive detection via OTP bit PWRON_CFG. In edge mode (default for mechanical switches), a falling edge wakes the device, with optional hardware debounce up to 750 ms. In level mode, a sustained high signal enables operation. Both modes trigger the same OTP-loaded startup sequence, and the setting is locked at manufacturing.

What is the role of the VREFDDR output on the MC34PF3000A4EP, and how is its voltage determined?

The VREFDDR output (Pin 25) provides the DDR3 memory reference voltage, set precisely to 0.5 × SW3_OUT. Since SW3 is typically configured for 1.5 V core voltage, VREFDDR delivers 0.75 V-matching DDR3's VDDQ/2 requirement. This ratio is hardwired in silicon and does not require external resistors, ensuring accuracy and stability across temperature and load.

Is the MC34PF3000A4EP pin-compatible with other PF3000 variants like MC32PF3000A4EP or MC33PF3000A4ES?

Yes, all PF3000 variants-including MC34PF3000A4EP-share identical 48-pin QFN packaging, pinout, and electrical interface. Differences lie solely in OTP programming (e.g., i.MX 6SX vs. i.MX 7), temperature grade (industrial vs. automotive), and minor functional enablings (e.g., LICELL support). Hardware layout is fully reusable across the family, simplifying platform design and migration.