NXP Semiconductors MC34PF1550A7EPR2

Overview

MC34PF1550A7EPR2 from NXP Semiconductors is a preprogrammed power management IC (PMIC) optimized for i.MX 6UL with LPDDR2 memory in industrial-temperature portable systems. It integrates three 1.0 A buck converters (SW1–SW3), three LDOs (LDO1–LDO3), RTC supply (VSNVS), DDR reference (VREFDDR), and a linear Li-ion charger supporting 100–1000 mA charge current, 3.5–4.44 V CV, and JEITA-compliant thermal monitoring.

For engineers reviewing the MC34PF1550A7EPR2 datasheet, MC34PF1550A7EPR2 pinout, MC34PF1550A7EPR2 application, or MC34PF1550A7EPR2 equivalent, this page delivers verified electrical specs, I²C-configurable startup sequences, industrial-grade −40 °C to 105 °C operation, and direct mapping to i.MX 6UL + LPDDR2 power architecture - critical for wearable, IoT, and embedded monitoring designs.

Technical Context

The MC34PF1550A7EPR2 implements a tightly integrated analog/digital PMIC architecture with OTP-programmed boot sequence, dynamic voltage scaling on SW1/SW2, and adaptive power-path management between VBUSIN, VSYS, and VBATT. Its internal 32 kHz/16 MHz clocks, thermistor bias (INT2P7), and dedicated USBPHY LDO enable autonomous battery charging and system-level power state coordination without host processor intervention.

It supports programmable low-power modes (Standby, Sleep/Low-power, Off), battery supplement mode, and ship-mode leakage <10 µA. The 40-pin QFN package includes exposed pad (EPAD) for thermal dissipation and features integrated 50 mΩ battery isolation MOSFET, overcurrent protection up to 3.0 A, and ±1% CHGCV accuracy - all validated for industrial ambient operation.

Key Specifications

Pinout & Package

MC34PF1550A7EPR2 uses a 40-pin QFN (5.0 mm × 5.0 mm, 0.4 mm pitch) with exposed EPAD connected to ground for thermal management. Pin functions are defined per NXP PF1550 datasheet Rev. 7 (2021), Figure 4 and Table 2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC34PF1550A7EPR2, MC34PF1550A3EPR2 lacks LPDDR2-specific VREFDDR calibration and startup timing, while PF8100A7EPR2 offers superior thermal management and watchdog autonomy but mandates board revision - neither serves as a direct replacement without design changes.

Availability

MC34PF1550A7EPR2 is available at Aetrix Electronics and suitable for smart wearables, industrial IoT gateways, and embedded monitoring systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MC34PF1550A7EPR2 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 markets, with deep expertise in ARM-based application processors and associated power management.

The PF1550 product line was designed specifically to deliver single-chip power solutions for NXP's i.MX low-power application processors - minimizing external components, enabling fast time-to-market, and ensuring seamless integration with LPDDR2/DDR3L memory subsystems.

FAQ

What is the operating temperature range of the MC34PF1550A7EPR2?

The MC34PF1550A7EPR2 is rated for industrial operation from −40 °C to 105 °C, as confirmed by its MC34 prefix designation in Table 1 of the PF1550 datasheet Rev. 7. This exceeds consumer-grade variants (MC32 prefix, up to 85 °C) and ensures reliable performance in harsh environments such as factory floors or outdoor IoT deployments. Thermal protection activates at 125 °C junction temperature.

Does the MC34PF1550A7EPR2 support LPDDR2 memory interfaces?

Yes, the MC34PF1550A7EPR2 is specifically preprogrammed for i.MX 6UL with LPDDR2 (Program Code A7 per Table 1). It provides a dedicated VREFDDR output (0.5–0.9 V, 10 mA) with calibrated timing and voltage accuracy required for LPDDR2 termination, unlike DDR3L-optimized variants such as MC34PF1550A3EPR2.

How is the battery charging behavior configured on the MC34PF1550A7EPR2?

Charging parameters on the MC34PF1550A7EPR2 - including constant-voltage (3.5–4.44 V), constant-current (100–1000 mA), termination current (5–50 mA), and JEITA thresholds - are stored in OTP memory and can be configured via I²C before final programming. Default settings are fixed per A7 configuration; runtime adjustments require OTP reprogramming at factory.

What package type and pin count does the MC34PF1550A7EPR2 use?

The MC34PF1550A7EPR2 uses a 40-pin QFN package measuring 5.0 mm × 5.0 mm with 0.4 mm pitch and an exposed thermal pad (EPAD). Pin definitions match the PF1550 functional block diagram and pinout diagram (Figures 2–4, datasheet Rev. 7), including dedicated SWxFB, VREFDDR, THM, and CHGB terminals.

Can the MC34PF1550A7EPR2 operate without a battery connected?

Yes, the MC34PF1550A7EPR2 supports no-battery operation using its integrated 50 mΩ BATFET. When VBATT is absent or at 0 V, the device routes power from VBUSIN → VSYS to supply all rails. The VSYS regulator tolerates DC inputs up to +22 V, and ship-mode leakage remains below 10 µA - enabling reliable operation in adapter-only or solar-powered systems.