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NXP Semiconductors MC34PF1550A8EPR2
- Part No.:
- MC34PF1550A8EPR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MC34PF1550A8EPR2.pdf
- Description:
- POWER MANAGEMENT IC 3 BUCK REGS
- Quantity:
- Payment:
- Shipping:
Inventory:2,447
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Product details
Overview
MC34PF1550A8EPR2 from NXP Semiconductors is a preprogrammed power management IC (PMIC) optimized for i.MX 6UL with DDR3L memory in edge-sensitive timing applications. 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 battery charger supporting 100–1000 mA charge current, 3.5–4.44 V programmable CV, and JEITA-compliant thermal regulation - enabling full power delivery for portable IoT and industrial wearable systems.
For engineers reviewing the MC34PF1550A8EPR2 datasheet, MC34PF1550A8EPR2 pinout, MC34PF1550A8EPR2 application, or MC34PF1550A8EPR2 equivalent, this page delivers verified technical context, validated pin functions, confirmed regulator output ranges, I²C-configurable charging parameters, and industrial-grade thermal operation (−40 °C to 105 °C) critical for low-power embedded design validation and BOM selection.
Technical Context
The MC34PF1550A8EPR2 implements a tightly integrated analog/digital PMIC architecture with dedicated power-path control: SW1 and SW2 support dynamic voltage scaling (DVS) for processor core (VCORE) and digital (VDIG) rails, while SW3 supplies fixed 1.8–3.3 V outputs for peripherals. Its linear charger includes integrated 50 mΩ BATFET, VSYS transient withstand up to +22 V DC, and OTP-programmable startup sequence - all coordinated via I²C interface with interrupt-driven event reporting (INTB, CHGB).
Regulator control logic enables user-defined power states: Standby, Sleep/Low-power (quiescent current <1.5 μA for LDOs), and Off (REGS_DISABLE). Thermal monitoring uses an external NTC thermistor on THM pin with JEITA thresholds (−10 °C to 60 °C), and battery overcurrent protection triggers at programmable 2.0–4.0 A with 12.8–19.2 ms debounce - ensuring robust operation in battery-backed industrial edge nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Buck Output Current | 1.0 A per buck (SW1/SW2/SW3); supports full-core power for i.MX 6UL with DDR3L under dynamic load |
| Buck Voltage Range | SW1/SW2: 0.6–1.3875 V (12.5 mV steps) or 1.1–3.3 V (variable); SW3: 1.8–3.3 V (100 mV steps) |
| LDO Output Current | LDO1/LDO3: 300 mA with load switch; LDO2: 400 mA; enables peripheral rail isolation and sequencing |
| Battery Charger Range | Charge current: 100–1000 mA; CV voltage: 3.5–4.44 V; termination current: 5–50 mA - configurable via OTP/I²C |
| Operating Temperature | −40 °C to 105 °C (industrial grade); validated for continuous operation in enclosed wearable and IoT enclosures |
| Package & Pin Count | 40-pin QFN 5.0 mm × 5.0 mm with exposed pad (EPAD); supports high-density PCB layout and thermal dissipation |
| I²C Interface | Standard-mode (100 kHz) and fast-mode (400 kHz); enables real-time voltage/temperature monitoring and fault logging |
Pinout & Package
MC34PF1550A8EPR2 is housed in a 40-pin QFN package (5.0 mm × 5.0 mm, 0.5 mm pitch) with exposed thermal pad (EPAD, Pin 41) requiring solder connection to PCB ground plane for optimal thermal performance and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW1FB (Pin 27) | Buck 1 feedback input | Monitors VCORE output for closed-loop regulation; sets core voltage via external resistor divider |
| SW2FB (Pin 16) | Buck 2 feedback input | Regulates VDIG rail; supports DVS during processor frequency scaling |
| SW3FB (Pin 15) | Buck 3 feedback input | Stabilizes fixed 1.8–3.3 V peripheral supply; no DVS capability |
| VREFDDR (Pin 21) | DDR memory reference output | Provides 0.5–0.9 V, 10 mA precision reference for LPDDR3/DDR3L termination |
| VBATT (Pin 33) | Battery input | Accepts single-cell Li-ion/Li-Po (2.7–4.44 V); connects to internal charger and BATFET |
| CHGB (Pin 40) | Charger LED driver | Sinks programmable LED current (4–8 mA) for battery status indication; driven from VSYS |
| THM (Pin 32) | Thermistor bias input | Connects external NTC thermistor to ground; enables JEITA-compliant charge control |
| INTB (Pin 9) | Open-drain interrupt output | Asserts on fault events (OV/UV, thermal, battery OCP); requires external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| OTP-Programmed Startup Sequence | User-defined power-on timing, soft-start delays, and shutdown order stored permanently for repeatable system boot |
| DVS on SW1 & SW2 | Enables real-time core/digital rail voltage adjustment synchronized with i.MX 6UL CPU frequency changes |
| VSYS Transient Withstand | Withstands +22 V DC transients on VSYS pin - eliminates need for external TVS in USB-powered designs |
| Integrated Coin Cell Charger | Charges backup coin cell from VSYS or VBUSIN; maintains RTC and SRAM retention during main battery removal |
| Industrial Temp Grade | Rated −40 °C to 105 °C junction temperature; qualified for uncooled industrial edge gateways and smart sensors |
Applications
| Smart Wearables | Industrial IoT Gateways |
|---|---|
|
Use Scenario: Compact wrist-worn health monitor with i.MX 6UL, BLE, and optical heart-rate sensor. IC Role / Device Role / Timing Role: MC34PF1550A8EPR2 supplies VCORE (1.1 V), VDIG (1.2 V), DDR3L (1.35 V), and sensor LDOs while managing Li-Po charging and RTC backup. Use Value: Single-chip power solution reduces board area by >40% vs discrete regulators; edge-sensitive programming ensures precise timing alignment with i.MX 6UL DDR3L interface. |
Use Scenario: Ruggedized wireless gateway for factory-floor asset tracking using i.MX 6UL, LoRa, and environmental sensors. IC Role / Device Role / Timing Role: MC34PF1550A8EPR2 powers processor, memory, radio, and sensors; handles wide-input USB/DC charging and battery failover. Use Value: VSYS 22 V transient rating eliminates external surge protection; industrial temp grade enables deployment in non-climate-controlled environments. |
| POS Terminals | E-Readers |
|
Use Scenario: Battery-backed handheld point-of-sale terminal with touch display and NFC reader. IC Role / Device Role / Timing Role: MC34PF1550A8EPR2 delivers regulated rails for ARM core, display driver, NFC chip, and secure element; manages fast Li-ion charging. Use Value: Programmable charge termination (5–50 mA) prevents overcharge in high-cycle retail use; LDO load-switch capability isolates unused peripherals to extend battery life. |
Use Scenario: Solar-charged e-reader with i.MX 6UL, E Ink display, and ambient light sensor. IC Role / Device Role / Timing Role: MC34PF1550A8EPR2 regulates display bias, memory, and sensor rails; uses coin cell charger to retain time/date during solar dormancy. Use Value: Ultra-low quiescent current (<1.5 μA in LPM) minimizes self-discharge; VSNVS 3.0 V output sustains RTC and SRAM for months without main power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33PF1550A8EPR2 | Consumer-grade variant (−40 °C to 85 °C); identical pinout, OTP configuration, and electrical specs except thermal rating | Valid for consumer wearables and indoor IoT where ambient temperature remains below 85 °C | Select MC33PF1550A8EPR2 only when industrial temp range is unnecessary - reduces cost without compromising functionality |
| PF8100A0EP | Higher-current PMIC (2.5 A bucks); lacks integrated battery charger and JEITA thermal control; different OTP structure and pinout | Targeted at AC-powered i.MX 7ULP systems requiring higher power but no battery management | Choose PF8100A0EP only for mains-powered applications needing >1 A buck current; not a drop-in replacement due to missing charger and incompatible pin mapping |
Compared with MC34PF1550A8EPR2, the MC33PF1550A8EPR2 offers identical power delivery and configuration but reduced thermal margin, while PF8100A0EP provides greater buck current at the expense of battery functionality and direct compatibility - making MC34PF1550A8EPR2 uniquely suited for battery-operated industrial edge devices requiring full-featured, OTP-locked power management.
Availability
MC34PF1550A8EPR2 is available at Aetrix Electronics and suitable for smart wearables, industrial IoT gateways, and battery-powered POS terminals requiring stable component supply across extended product lifecycles and temperature extremes.
Supply support for MC34PF1550A8EPR2 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 fully integrated, OTP-configured power solutions for NXP's i.MX low-power application processors - reducing design complexity and accelerating time-to-market for battery-operated edge devices.
FAQ
What is the primary application processor family supported by the MC34PF1550A8EPR2?
The MC34PF1550A8EPR2 is preprogrammed for the i.MX 6UL processor with DDR3L memory and edge-sensitive timing requirements. Its OTP configuration (code "8") defines the startup sequence, voltage rails, and DDR3L-compatible VREFDDR settings required for reliable boot and operation of this specific i.MX variant - not generic across all i.MX families.
Does the MC34PF1550A8EPR2 include a battery charger, and what are its key configurable parameters?
Yes, the MC34PF1550A8EPR2 integrates a linear Li-ion/Li-Po battery charger supporting 100–1000 mA charge current, 3.5–4.44 V constant-voltage setting, and 5–50 mA termination current - all programmable via OTP or runtime I²C commands. It also features JEITA-compliant thermal regulation and battery supplement mode for seamless power path management.
What is the significance of the "A8" suffix in MC34PF1550A8EPR2?
The "A8" suffix indicates OTP programming code 8, which configures the MC34PF1550A8EPR2 for i.MX 6UL with DDR3L memory and edge-sensitive timing behavior. This preprogrammed configuration defines the power-up sequence, regulator output voltages, DVS settings, and DDR reference voltage - eliminating the need for external configuration during system initialization.
Can the MC34PF1550A8EPR2 operate without an external microcontroller after initial configuration?
Yes - the MC34PF1550A8EPR2 executes its entire power sequence autonomously using OTP-stored settings for startup, soft-start, and shutdown. While I²C allows runtime reconfiguration (e.g., DVS adjustment or fault monitoring), full system operation - including battery charging, regulation, and thermal protection - proceeds without host processor intervention once powered.
What thermal performance specifications apply to the MC34PF1550A8EPR2 in industrial environments?
The MC34PF1550A8EPR2 is rated for −40 °C to 105 °C ambient operation and includes on-die thermal regulation that reduces charge current at 80 °C, 95 °C, or 110 °C (OTP-selectable). Its QFN package achieves 17.8 °C/W junction-to-ambient thermal resistance on an eight-layer PCB, enabling reliable operation in sealed industrial enclosures without active cooling.
MC34PF1550A8EPR2 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:
- 4.1V ~ 6V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-HVQFN (5x5)
MC34PF1550A8EPR2 FAQ
1.How can I place an order for MC34PF1550A8EPR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34PF1550A8EPR2 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 MC34PF1550A8EPR2 reliable?
The price and inventory of MC34PF1550A8EPR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34PF1550A8EPR2 is usually 5 days.
3.What payment methods are accepted for MC34PF1550A8EPR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34PF1550A8EPR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34PF1550A8EPR2?
MC34PF1550A8EPR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34PF1550A8EPR2 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 MC34PF1550A8EPR2?
For technical support, including MC34PF1550A8EPR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34PF1550A8EPR2 requirements.
6.How does Aetrix verify that MC34PF1550A8EPR2 is sourced from the original manufacturer or authorized distributors?
All MC34PF1550A8EPR2 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 MC34PF1550A8EPR2 meets industry standards.
7.What is the process for return or replacement of MC34PF1550A8EPR2?
All MC34PF1550A8EPR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC34PF1550A8EPR2, 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 MC34PF1550A8EPR2 part is unused and in its original packaging.
Return procedure for MC34PF1550A8EPR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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