My Inquiry
My Account
NXP Semiconductors MC34PF1550A4EPR2
- Part No.:
- MC34PF1550A4EPR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MC34PF1550A4EPR2.pdf
- Description:
- POWER MANAGEMENT IC: 3 BUCK REGS
- Quantity:
- Payment:
- Shipping:
Inventory:1,811
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC34PF1550A4EPR2 from NXP Semiconductors is a preprogrammed power management IC (PMIC) optimized for i.MX 7ULP processors with LPDDR3 memory in industrial-grade portable and IoT systems. It integrates three 1.0 A buck converters, three LDOs (300 mA/400 mA/300 mA), RTC supply (3.0 V), DDR reference voltage (0.5–0.9 V), and a linear Li-ion charger (100–1000 mA) with JEITA-compliant thermistor monitoring.
For engineers reviewing the MC34PF1550A4EPR2 datasheet, MC34PF1550A4EPR2 pinout, MC34PF1550A4EPR2 application, or MC34PF1550A4EPR2 equivalent, key selection criteria include its OTP-configured startup sequence for i.MX 7ULP + LPDDR3, −40 °C to 105 °C industrial temperature rating, QFN40 5.0 × 5.0 mm package with exposed pad, and I²C-controlled dynamic voltage scaling on SW1/SW2.
Technical Context
The MC34PF1550A4EPR2 implements a tightly integrated analog/digital PMIC architecture with dedicated regulator blocks: SW1 and SW2 support dynamic voltage scaling (DVS) across 0.6–1.3875 V (12.5 mV steps) or 1.1–3.3 V (variable), while SW3 delivers fixed 1.8–3.3 V outputs. Its battery path includes an integrated 50 mΩ isolation MOSFET, programmable charge termination (5–50 mA), and VSYS transient withstand up to +22 V DC.
Control logic resides in a configurable state machine with OTP memory storing startup/power-down sequences, regulator voltages, and charger parameters. The I²C interface enables real-time processor supervision of all regulators, charger events, thermal thresholds, and LED status indicators-critical for low-power wearable and edge-sensor applications requiring deterministic power sequencing and fault recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | VBUSIN: 4.1–6.0 V (USB/AC adapter); VSYS withstand: 0–22 V DC transient |
| Buck Converters | SW1/SW2: 1.0 A, DVS-capable (0.6–1.3875 V @ 12.5 mV steps); SW3: 1.0 A, 1.8–3.3 V @ 100 mV steps |
| LDO Regulators | LDO1/LDO3: 300 mA, 0.75–1.5 V or 1.8–3.3 V; LDO2: 400 mA, 1.8–3.3 V; all with <1.5 μA quiescent current in low-power mode |
| Battery Charger | Linear Li-ion/Li-Po: 100–1000 mA CC, 3.5–4.44 V CV, JEITA temp sensing, 5–50 mA termination, 2–4 A overcurrent protection |
| RTC & Memory Support | VSNVS: 3.0 V / 2.0 mA; VREFDDR: 0.5–0.9 V / 10 mA; coin cell charging support |
| Operating Temperature | −40 °C to 105 °C (industrial grade) |
| Package | QFN-40, 5.0 mm × 5.0 mm, 0.5 mm pitch, exposed thermal pad (EPAD) |
Pinout & Package
MC34PF1550A4EPR2 uses a 40-pin QFN package (98ASA00913D) with 5.0 mm × 5.0 mm footprint, 0.5 mm pitch, and exposed thermal pad (Pin 41) requiring PCB ground connection for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW1FB (Pin 27) | Buck 1 feedback input | Resistor-divider network sets regulated output voltage; supports DVS via I²C register control |
| SW2FB (Pin 16) | Buck 2 feedback input | Enables independent voltage programming and dynamic scaling for dual-core or GPU rail |
| SW3FB (Pin 15) | Buck 3 feedback input | Fixed-output configuration for peripherals or memory I/O supply (1.8–3.3 V range) |
| VREFDDR (Pin 21) | DDR memory reference voltage output | Provides precision 0.5–0.9 V reference for LPDDR3 termination; requires external 1 µF capacitor |
| CHGB (Pin 40) | Charger LED driver sink | Drives status LED from VSYS; supports programmable duty cycle (10–100%), frequency (0.5–256 Hz), and ramp timing |
| THM (Pin 32) | Thermistor bias input | Connects NTC thermistor to ground; enables JEITA-compliant charge control across −10 °C to 60 °C |
| INTB (Pin 9) | Open-drain interrupt output | Asserts on critical events: thermal fault, battery OCP, charger timeout, or regulator UVLO |
| 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 |
|---|---|
| DVS on SW1/SW2 | Reduces dynamic power in ARM cores by enabling real-time voltage scaling during CPU load transitions |
| OTP-programmed startup | Hard-coded power-on sequence for i.MX 7ULP + LPDDR3 eliminates external firmware dependency |
| VSYS transient tolerance | Withstands 22 V DC transients on main input-enables robust operation in automotive-accessory or industrial USB-powered systems |
| Integrated battery isolation | 50 mΩ internal MOSFET allows system boot with no/low battery while preventing reverse discharge |
| JEITA thermistor interface | Hardware-accelerated battery temperature monitoring with programmable thresholds and hysteresis avoids software overhead |
Applications
| Smart Wearables | Industrial IoT Sensors |
|---|---|
Use Scenario: Compact wrist-worn health monitor with i.MX 7ULP, optical heart-rate sensor, and Bluetooth LE radio. IC Role / Device Role / Timing Role: MC34PF1550A4EPR2 supplies core voltage (SW1), DDR I/O (SW3), sensor bias (LDO2), and battery charging with thermal safety. Use Value: OTP-configured sequencing ensures reliable cold-start; 1.0 μA ULP quiescent current extends battery life beyond 7 days. | Use Scenario: Battery-powered environmental node deployed in factory settings measuring temperature/humidity with LoRaWAN backhaul. IC Role / Device Role / Timing Role: MC34PF1550A4EPR2 powers i.MX 7ULP MCU, LPDDR3 memory, and LoRa transceiver while managing wide-input USB/DC charging. Use Value: −40 °C to 105 °C rating guarantees operation in uncontrolled enclosures; VSYS 22 V tolerance prevents failure during surge events. |
| POS Terminals | E-Readers |
Use Scenario: Handheld retail terminal using i.MX 6UL with DDR3L, touchscreen, and NFC reader. IC Role / Device Role / Timing Role: MC34PF1550A4EPR2 delivers regulated rails for processor, display controller, and secure element; manages fast-charge via USB-C PD. Use Value: Programmable charge current (100–1000 mA) enables rapid recharge between shifts without thermal throttling. | Use Scenario: Solar-charged e-reader with i.MX 7ULP, EPD display, and ambient light sensor. IC Role / Device Role / Timing Role: MC34PF1550A4EPR2 supplies low-noise VREFDDR for display timing, LDO1 for sensor bias, and linear charging from variable solar input. Use Value: VREFDDR accuracy (±1%) ensures stable EPD waveform generation; battery supplement mode maintains operation during low-light conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC34PF1550A4EP | Tape-and-reel suffix omitted; identical OTP configuration and electrical specs | No functional difference; differs only in packaging format (bulk vs. reel) | Select MC34PF1550A4EPR2 for automated SMT assembly requiring tape-and-reel delivery |
| MPF5020-A0 | Higher integration: includes Ethernet PHY, CAN FD, and dual Cortex-M7; larger BGA package; no LPDDR3-specific OTP | Targets high-end industrial gateways-not optimized for ultra-low-power wearables or cost-sensitive IoT nodes | Choose MPF5020-A0 only when Ethernet/CAN connectivity and multi-core processing are required alongside PMIC functions |
Compared with MC34PF1550A4EP, MC34PF1550A4EPR2 offers identical functionality with reel-ready packaging for production lines; versus MPF5020-A0, it provides lower BOM cost, smaller footprint, and pre-validated i.MX 7ULP + LPDDR3 sequencing-making it optimal for space-constrained, battery-operated edge devices.
Availability
MC34PF1550A4EPR2 is available at Aetrix Electronics and suitable for smart wearables, industrial IoT sensors, and handheld POS terminals requiring stable component supply, long-term lifecycle support, and industrial-temperature reliability.
Supply support for MC34PF1550A4EPR2 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.
The PF1550 product line was designed specifically to deliver complete, pre-validated power solutions for NXP's i.MX application processors-including 7ULP, 6UL, 6ULL, and 6SX-enabling rapid development of low-power, battery-operated edge devices.
FAQ
What is the primary target processor for MC34PF1550A4EPR2?
The MC34PF1550A4EPR2 is preprogrammed for the i.MX 7ULP processor with LPDDR3 memory interface. Its OTP configuration includes optimized power-up sequencing, voltage levels, and timing specifically validated for this SoC-memory combination-ensuring reliable boot and stable operation without external configuration.
Does MC34PF1550A4EPR2 support dynamic voltage scaling (DVS)?
Yes, MC34PF1550A4EPR2 supports DVS on SW1 and SW2 buck converters. These rails can be dynamically adjusted between 0.6 V and 1.3875 V in 12.5 mV steps via I²C commands, enabling real-time power optimization for ARM Cortex-A7 cores in the i.MX 7ULP during varying computational loads.
What battery charging profiles does MC34PF1550A4EPR2 implement?
MC34PF1550A4EPR2 implements full JEITA-compliant charging: precharge (2.8 V threshold), constant-current (100–1000 mA), constant-voltage (3.5–4.44 V), and termination (5–50 mA). It also supports battery supplement mode and thermal regulation at 80 °C, 95 °C, or 110 °C thresholds-all configurable via OTP or I²C.
Is MC34PF1550A4EPR2 compatible with consumer-temperature applications?
No-MC34PF1550A4EPR2 is rated for −40 °C to 105 °C industrial operation. For consumer applications (0 °C to 85 °C), NXP offers the MC32PF1550A4EP variant. Using MC34PF1550A4EPR2 in consumer designs is permissible but incurs higher cost without functional benefit.
How is the DDR memory reference voltage generated by MC34PF1550A4EPR2?
MC34PF1550A4EPR2 generates VREFDDR internally by dividing VINREFDDR (supplied from VSYS or dedicated rail) by two, then regulating it to a precise 0.5–0.9 V output capable of sourcing 10 mA. This rail is dedicated to LPDDR3 termination and requires a 1.0 µF ceramic capacitor at the VREFDDR pin for stability.
MC34PF1550A4EPR2 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)
MC34PF1550A4EPR2 FAQ
1.How can I place an order for MC34PF1550A4EPR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34PF1550A4EPR2 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 MC34PF1550A4EPR2 reliable?
The price and inventory of MC34PF1550A4EPR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34PF1550A4EPR2 is usually 5 days.
3.What payment methods are accepted for MC34PF1550A4EPR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34PF1550A4EPR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34PF1550A4EPR2?
MC34PF1550A4EPR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34PF1550A4EPR2 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 MC34PF1550A4EPR2?
For technical support, including MC34PF1550A4EPR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34PF1550A4EPR2 requirements.
6.How does Aetrix verify that MC34PF1550A4EPR2 is sourced from the original manufacturer or authorized distributors?
All MC34PF1550A4EPR2 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 MC34PF1550A4EPR2 meets industry standards.
7.What is the process for return or replacement of MC34PF1550A4EPR2?
All MC34PF1550A4EPR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC34PF1550A4EPR2, 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 MC34PF1550A4EPR2 part is unused and in its original packaging.
Return procedure for MC34PF1550A4EPR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC34PF1550A4EPR2 Tags
-
TPS2511DGNR
Texas Instruments
-
UTC2000/MG
Microchip Technology
-
TUSB320HAIRWBR
Texas Instruments
-
TPS61252DSGR
Texas Instruments
-
PI5USB30216CXUAEX
Diodes Incorporated
-
SN6501DBVR
Texas Instruments
-
CYPD3177-24LQXQT
Infineon Technologies
-
SN6501QDBVRQ1
Texas Instruments
-
STUSB1600AQTR
STMicroelectronics
-
SN6505BDBVR
Texas Instruments
-
SN6501DBVT
Texas Instruments
-
TPS65150PWPR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
