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NXP Semiconductors MC34PF1550A6EPR2
- Part No.:
- MC34PF1550A6EPR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MC34PF1550A6EPR2.pdf
- Description:
- PF1550
- Quantity:
- Payment:
- Shipping:
Inventory:4,861
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Product details
Overview
MC34PF1550A6EPR2 from NXP Semiconductors is a preprogrammed power management IC optimized for i.MX 6ULL processors with DDR3L memory, integrating three 1.0 A buck converters (SW1–SW3), three LDOs (LDO1–LDO3), RTC supply (VSNVS), DDR reference (VREFDDR), and a linear Li-ion battery charger supporting 100–1000 mA charge current and JEITA-compliant thermal regulation. It delivers full power sequencing for portable IoT and wearable systems.
For engineers reviewing the MC34PF1550A6EPR2 datasheet, MC34PF1550A6EPR2 pinout, MC34PF1550A6EPR2 application, or MC34PF1550A6EPR2 equivalent, key selection criteria include its OTP-configured startup sequence for i.MX 6ULL+DDR3L, VSYS transient withstand up to +22 V, I²C-controlled dynamic voltage scaling on SW1/SW2, and industrial-grade −40 °C to 105 °C operation.
Technical Context
The MC34PF1550A6EPR2 implements a tightly integrated analog/digital PMIC architecture with dedicated regulators per processor domain: SW1 and SW2 support DVS for ARM core and GPU voltage scaling, while SW3 supplies fixed 1.8–3.3 V for peripherals. Its internal 32 kHz/16 MHz clocks, OTP-programmable power-up/down timing, and thermistor-biased INT2P7 regulator enable autonomous battery-charge supervision without host intervention.
Power-path management includes a 75 mΩ BATFET, programmable VSYS regulation (3.5/3.7/4.3 V options), and ship-mode leakage <10 µA. The I²C interface (SCL/SDA) provides real-time status reporting (INTB), watchdog control (WDI), and register-level configuration of charger parameters, LDO voltages, and thermal thresholds - all validated for i.MX 6ULL DDR3L boot compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range (VBUSIN) | 4.1 V to 6.0 V; supports USB bus or AC adapter input with 22 V transient withstand capability |
| Buck Converters (SW1/SW2) | 0.6–1.3875 V @ 1.0 A with 12.5 mV steps and DVS; enables dynamic core voltage scaling for i.MX 6ULL |
| Buck Converter (SW3) | 1.8–3.3 V @ 1.0 A in 100 mV steps; supplies fixed I/O or peripheral rail without DVS |
| LDO Outputs (LDO1/LDO3) | 0.75–1.5 V / 1.8–3.3 V @ 300 mA with load switch mode; powers DDR termination or low-noise analog blocks |
| Battery Charger | Linear Li-ion charging: 100–1000 mA programmable current, 3.5–4.44 V CV range, JEITA temp sensing |
| Operating Temperature | −40 °C to 105 °C; qualified for industrial applications per NXP's MC34-series specification |
| Package | 40-pin QFN 5.0 mm × 5.0 mm with exposed pad; thermal resistance RΘJA = 17.8 °C/W (8-layer board) |
Pinout & Package
MC34PF1550A6EPR2 uses a 40-pin QFN 5.0 mm × 5.0 mm package with exposed thermal pad (EPAD, Pin 41) requiring PCB ground connection. Pin functions are defined per NXP PF1550 datasheet Rev. 7 (2021), with dedicated I²C, power, feedback, and system control terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW1FB (Pin 27) | Buck 1 feedback input | Connects to resistor divider for precise VCORE output regulation; enables DVS via I²C write to OTP registers |
| VBUSIN (Pin 37) | Charger input | Accepts 4.1–6.0 V USB/adapter input; withstands 22 V transients; triggers adaptive DPM regulation |
| VSNVS (Pin 30) | RTC supply output | 3.0 V @ 2.0 mA; powers real-time clock and backup memory during system sleep or battery-only operation |
| CHGB (Pin 40) | Charger LED driver | Sinks up to 8 mA; connects LED anode to VSYS for status indication (charging/complete/fault) |
| INTB (Pin 9) | Open-drain interrupt output | Asserts on charger fault, thermal event, or LDO undervoltage; pulls low to notify host processor |
| EPAD (Pin 41) | Exposed thermal pad | Mandatory ground connection for thermal dissipation and EMI reduction; improves RΘJB to 8.8 °C/W |
Key Features
| Feature | Design Value |
|---|---|
| OTP-configured startup sequence | User-programmable power-up timing and soft-start for i.MX 6ULL with DDR3L, eliminating external sequencing logic |
| VSYS transient protection | Withstands DC and transient inputs up to +22 V on VSYS pin, enabling robust operation in unregulated battery+adapter systems |
| I²C-controlled DVS on SW1/SW2 | Real-time voltage adjustment during runtime for ARM core/GPU power optimization without hardware changes |
| JEITA-compliant battery charging | Integrated thermistor monitoring with programmable thresholds (−10 °C to 60 °C) and hysteresis for safe Li-ion thermal management |
| Ship mode leakage control | <10 µA system leakage in SHIP mode via RSYSDISCH = 600 Ω, extending shelf life for battery-powered IoT devices |
Applications
| Smart Wearables | Industrial IoT Gateways |
|---|---|
|
Use Scenario: Compact wrist-worn health monitor with i.MX 6ULL, BLE, sensors, and rechargeable Li-ion battery. IC Role / Device Role / Timing Role: Single-chip power source for processor core (SW1), DDR3L (SW2/VREFDDR), peripherals (SW3/LDO2), and battery management (charger/VSNVS). Use Value: Eliminates discrete PMU components; OTP configuration ensures correct boot sequence for DDR3L initialization and low-quiescent sleep modes. |
Use Scenario: Ruggedized edge gateway deployed in factory automation, operating continuously on 4.2 V Li-ion with periodic USB recharging. IC Role / Device Role / Timing Role: Manages dual-input power path (VBUSIN/VSYS), regulates 1.1 V core and 3.3 V I/O rails, and monitors battery health across −40 °C to 105 °C ambient. Use Value: 22 V VSYS withstand and industrial temp rating prevent brownouts during voltage surges; JEITA charging extends battery cycle life in high-temp environments. |
| Wireless Game Controllers | Home Automation Hubs |
|
Use Scenario: Low-latency Bluetooth gaming controller with motion sensors, audio feedback, and button-driven wake-up. IC Role / Device Role / Timing Role: Powers ARM core (SW1), sensor interface (LDO1), audio codec (LDO2), and USB PHY (USBPHY) while managing battery charge/discharge cycles. Use Value: ONKEY and STANDBY pins enable instant wake-from-sleep; CHGB-driven LED gives user feedback without MCU involvement. |
Use Scenario: Always-on Zigbee/Z-Wave hub with Wi-Fi backhaul, running Linux on i.MX 6ULL and maintaining time via RTC during mains outage. IC Role / Device Role / Timing Role: Supplies VCORE (SW1), VDIG (SW2), and VREFDDR for DDR3L; maintains VSNVS-backed RTC and coin-cell charging during AC loss. Use Value: VSNVS 3.0 V output sustains RTC for >10 years on coin cell; OTP stores custom power-down sequence to preserve state across outages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC34PF1550A5EPR2 | OTP-programmed for i.MX 6UL with DDR3 (not DDR3L); lacks DDR3L-specific timing and voltage calibration | Designed for i.MX 6UL-based designs; incompatible with i.MX 6ULL DDR3L memory initialization sequences | Select only when targeting i.MX 6UL + DDR3; verify SDRAM timing margins before substitution |
| MC34PF1550A3EPR2 | OTP-programmed for i.MX 6UL with DDR3L; shares same buck/LDO specs but different startup register map | Valid for i.MX 6UL + DDR3L systems; not validated for i.MX 6ULL-specific power sequencing or thermal profiles | Use for i.MX 6UL platforms requiring DDR3L support; requires firmware validation for 6ULL migration |
Compared with MC34PF1550A6EPR2, A5EPR2 targets DDR3 (not DDR3L) on i.MX 6UL and lacks 6ULL-specific OTP calibration, while A3EPR2 supports DDR3L on i.MX 6UL but omits 6ULL's extended thermal regulation and VSYS loop stability tuning.
Availability
MC34PF1550A6EPR2 is available at Aetrix Electronics and suitable for smart wearables, industrial IoT gateways, and wireless game controllers requiring stable component supply with guaranteed long-term industrial temperature support.
Supply support for MC34PF1550A6EPR2 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, with deep expertise in ARM-based application processors and associated power management.
The PF1550 product line was designed specifically to deliver integrated, OTP-configurable power solutions for NXP's i.MX low-power application processors, reducing BOM count and simplifying design for battery-operated edge devices.
FAQ
What is the primary processor compatibility of the MC34PF1550A6EPR2?
The MC34PF1550A6EPR2 is OTP-programmed specifically for the i.MX 6ULL processor with DDR3L memory interface. Its startup sequence, voltage rails, and timing parameters are calibrated to meet i.MX 6ULL boot requirements, including DDR3L initialization and power-state transitions. It is not validated for i.MX 6UL or i.MX 7ULP without firmware adaptation.
Does the MC34PF1550A6EPR2 support dynamic voltage scaling (DVS)?
Yes, the MC34PF1550A6EPR2 supports DVS on SW1 and SW2 buck converters via I²C register writes. This allows real-time adjustment of output voltage (0.6–1.3875 V in 12.5 mV steps) to match i.MX 6ULL core and GPU load conditions, reducing dynamic power consumption without hardware modification.
What battery charging capabilities does the MC34PF1550A6EPR2 provide?
The MC34PF1550A6EPR2 integrates a linear Li-ion charger supporting 100–1000 mA programmable charge current, 3.5–4.44 V CV range, JEITA-compliant thermistor monitoring (−10 °C to 60 °C), and battery overcurrent protection up to 3.0 A. It includes a 50 mΩ isolation MOSFET and battery supplement mode for seamless power-path management.
How is thermal management implemented in the MC34PF1550A6EPR2?
The MC34PF1550A6EPR2 implements thermal regulation via an external NTC thermistor connected to THM (Pin 32) and bias from INT2P7 (Pin 38). It supports programmable thermal thresholds (80 °C, 95 °C, or 110 °C) to reduce charge current during overheating, with hysteresis of 0.5–5.0 °C to prevent oscillation. Junction temperature is monitored internally up to 125 °C.
What is the function of the VSNVS pin on the MC34PF1550A6EPR2?
The VSNVS pin (Pin 30) delivers a regulated 3.0 V output at 2.0 mA to power the real-time clock (RTC) and battery-backed memory during system sleep or main power loss. It remains active in all low-power states and supports coin-cell backup via LICELL (Pin 31), ensuring timekeeping integrity and state retention for up to 10 years on a CR2032 cell.
MC34PF1550A6EPR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Embedded Systems, Low-Power IoT, Mobile/Wearable Devices
- Current - Supply:
- -
- Voltage - Supply:
- 3.8V ~ 7V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-HVQFN (5x5)
MC34PF1550A6EPR2 FAQ
1.How can I place an order for MC34PF1550A6EPR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34PF1550A6EPR2 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC34PF1550A6EPR2 reliable?
The price and inventory of MC34PF1550A6EPR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34PF1550A6EPR2 is usually 5 days.
3.What payment methods are accepted for MC34PF1550A6EPR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34PF1550A6EPR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34PF1550A6EPR2?
MC34PF1550A6EPR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34PF1550A6EPR2 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC34PF1550A6EPR2?
For technical support, including MC34PF1550A6EPR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34PF1550A6EPR2 requirements.
6.How does Aetrix verify that MC34PF1550A6EPR2 is sourced from the original manufacturer or authorized distributors?
All MC34PF1550A6EPR2 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC34PF1550A6EPR2 meets industry standards.
7.What is the process for return or replacement of MC34PF1550A6EPR2?
All MC34PF1550A6EPR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC34PF1550A6EPR2, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC34PF1550A6EPR2 part is unused and in its original packaging.
Return procedure for MC34PF1550A6EPR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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