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NXP Semiconductors MC34PF1550A5EPR2
- Part No.:
- MC34PF1550A5EPR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MC34PF1550A5EPR2.pdf
- Description:
- PF1550
- Quantity:
- Payment:
- Shipping:
Inventory:3,100
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Product details
Overview
MC34PF1550A5EPR2 from NXP Semiconductors is a preprogrammed power management IC (PMIC) optimized for i.MX 6UL processors with DDR3 memory, delivering three 1.0 A buck converters (SW1–SW3), three LDOs (LDO1–LDO3), integrated linear battery charger (100–1000 mA), RTC supply (VSNVS), and DDR reference voltage (VREFDDR). It supports battery-powered smart wearables and industrial IoT edge nodes requiring tight thermal control and JEITA-compliant charging.
For engineers reviewing the MC34PF1550A5EPR2 datasheet, MC34PF1550A5EPR2 pinout, MC34PF1550A5EPR2 application, or MC34PF1550A5EPR2 equivalent, this page provides verified regulator output ranges, I²C-configurable charge parameters, thermal regulation thresholds (80/95/110 °C), VSYS transient response data, and confirmed pin mapping for QFN40 5.0 × 5.0 mm package with exposed pad.
Technical Context
The MC34PF1550A5EPR2 implements a dedicated power architecture for i.MX 6UL SoCs: 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 linear charger integrates programmable CV/CC thresholds, battery overcurrent protection (2.0–4.0 A), and thermistor-based JEITA compliance via THM pin.
Control is handled through an I²C interface (SCL/SDA) with OTP-programmable startup sequence, standby/sleep/off modes, and interrupt-driven event handling (INTB, CHGB, WDI). The device includes internal 16 MHz and 32 kHz clocks, watchdog timer (80 s ±20%), and robust input protection: VBUSIN withstands up to +22 V DC transients, and VSYS operates from 0 V to +4.8 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range (VBUSIN) | 4.1 V to 6.0 V operating; withstands up to +22 V DC transients for system-level surge resilience |
| Buck Converters (SW1/SW2) | 1.0 A output, 0.6–1.3875 V in 12.5 mV steps (DVS enabled); supports processor core voltage scaling |
| Buck Converter (SW3) | 1.0 A output, 1.8–3.3 V in 100 mV steps; supplies I/O or peripheral rails without DVS |
| 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-Poly, 100–1000 mA programmable CC, 3.5–4.44 V CV, JEITA temp sensing, 5–50 mA termination current |
| Operating Temperature | −40 °C to +105 °C ambient (industrial grade); junction limit 125 °C with thermal regulation at 80/95/110 °C |
| Package | 40-pin QFN, 5.0 mm × 5.0 mm, 0.4 mm pitch, exposed thermal pad (EPAD) connected to GND |
Pinout & Package
MC34PF1550A5EPR2 uses a 40-pin QFN (5.0 mm × 5.0 mm, 0.4 mm pitch) with exposed thermal pad (EPAD, Pin 41) requiring PCB ground connection for thermal dissipation and EMI control. Pin functions are validated per NXP PF1550 datasheet Rev. 7 (2021).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW1FB (Pin 27) | Buck 1 feedback input | Connects to resistor divider for precise VCORE output voltage regulation (0.6–1.3875 V range) |
| SW2FB (Pin 16) | Buck 2 feedback input | Enables DVS-capable VDIG rail regulation matching i.MX 6UL digital domain requirements |
| VREFDDR (Pin 21) | DDR memory reference voltage output | Provides 0.5–0.9 V, 10 mA stable reference for DDR3 termination; sourced from VINREFDDR/2 |
| CHGB (Pin 40) | Charger LED driver input | Sinks current from VSYS to drive status LED with programmable duty cycle (10–100%) and frequency (0.5–256 Hz) |
| THM (Pin 32) | Thermistor bias connection | Supplies bias current to external NTC thermistor for JEITA-compliant battery temperature monitoring |
| INTB (Pin 9) | Open-drain interrupt output | Asserts on critical events (charger fault, thermal warning, power state change); requires external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| DVS-enabled buck regulators (SW1/SW2) | Enables real-time core voltage scaling during i.MX 6UL DVFS operation, reducing dynamic power by >30% under variable load |
| Programmable battery charge termination | Configurable IEOC (5–50 mA) stored in OTP ensures consistent end-of-charge detection across production units |
| VSYS power-path management | Integrates BATFET (75 mΩ typical) and adaptive DPM regulation to maintain system operation during USB input voltage sag |
| Industrial-grade thermal operation | Rated −40 °C to +105 °C ambient with three programmable thermal regulation thresholds (80/95/110 °C) for safe battery charging |
| I²C-controlled power sequencing | OTP-programmable startup/shutdown timing eliminates need for external sequencer in space-constrained wearable designs |
Applications
| Smart Wearables | Industrial IoT Edge Node |
|---|---|
Use Scenario: Compact wrist-worn health monitor with i.MX 6UL, BLE, sensors, and rechargeable Li-Po battery. IC Role / Device Role / Timing Role: MC34PF1550A5EPR2 supplies VCORE (SW1), VDIG (SW2), VIO (SW3), sensor LDOs, and manages battery charge/discharge cycles. Use Value: Integrated JEITA thermistor interface and 100–1000 mA programmable charge current enable safe overnight charging without external thermal supervision. |
Use Scenario: Battery-backed environmental sensor gateway deployed in uncontrolled factory environments (−40 °C to +85 °C). IC Role / Device Role / Timing Role: MC34PF1550A5EPR2 powers i.MX 6UL, DDR3 memory (via VREFDDR), and RS-485 transceivers while sustaining operation during mains failure. Use Value: −40 °C to +105 °C rating, 22 V VBUSIN transient tolerance, and OTP-configured low-power modes ensure reliable field operation without derating. |
| POS Terminal | Home Automation Hub |
Use Scenario: Portable retail POS terminal with touchscreen, barcode scanner, and magnetic stripe reader. IC Role / Device Role / Timing Role: MC34PF1550A5EPR2 delivers regulated rails to i.MX 6UL, display controller, and peripherals; manages dual-input (USB + battery) power routing. Use Value: VSYS power-path architecture enables seamless switchover between USB host and battery without system reset or brownout. |
Use Scenario: Voice-controlled smart home hub with Wi-Fi, Zigbee, and local storage, operating 24/7 on wall power with battery backup. IC Role / Device Role / Timing Role: MC34PF1550A5EPR2 supplies always-on VSNVS (3.0 V RTC), memory retention, and fast wake-up from deep sleep using STANDBY/ONKEY inputs. Use Value: <1.5 μA LDO quiescent current and OTP-programmable sleep modes extend battery backup life to >1 year in ship mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC34PF1550A3EPR2 | Preprogrammed for i.MX 6UL with DDR3L; SW1/SW2 default voltages tuned for DDR3L VDDQ (1.35 V) | Targeted at lower-voltage DDR3L memory interfaces; not calibrated for standard DDR3 (1.5 V) | Select MC34PF1550A3EPR2 only when DDR3L memory is used; MC34PF1550A5EPR2 is required for standard DDR3 compliance. |
| MC34PF1550A6EPR2 | Preprogrammed for i.MX 6ULL with DDR3L; includes optimized power-down sequencing for 6ULL's reduced peripheral set | Designed for i.MX 6ULL SoC; lacks full i.MX 6UL peripheral regulator configuration (e.g., USBPHY timing) | MC34PF1550A6EPR2 is incompatible with i.MX 6UL; use only with i.MX 6ULL-based designs requiring identical package and pinout. |
Compared with MC34PF1550A3EPR2 and MC34PF1550A6EPR2, the MC34PF1550A5EPR2 uniquely supports i.MX 6UL + DDR3 (1.5 V) timing and voltage requirements, includes full USBPHY LDO configuration, and retains all 6UL-specific OTP sequences-making it the sole validated option for DDR3-based i.MX 6UL platforms.
Availability
MC34PF1550A5EPR2 is available at Aetrix Electronics and suitable for smart wearables, industrial IoT edge nodes, and portable POS terminals requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature grade performance.
Supply support for MC34PF1550A5EPR2 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, preconfigured power solutions for NXP's i.MX low-power application processors-including i.MX 6UL, 6ULL, 6SX, and 7ULP-reducing design complexity and time-to-market for battery-operated edge devices.
FAQ
What is the primary target processor for MC34PF1550A5EPR2?
The MC34PF1550A5EPR2 is preprogrammed specifically for the i.MX 6UL processor with DDR3 memory interface. Its OTP configuration sets default output voltages, power-up sequencing, and regulator timing to match i.MX 6UL's core (VCORE), digital (VDIG), and I/O (VIO) domain requirements, as well as DDR3 VDD/VDDQ specifications. It is not compatible with DDR3L or LPDDR variants without reconfiguration.
Does MC34PF1550A5EPR2 support JEITA-compliant battery charging?
Yes, MC34PF1550A5EPR2 supports JEITA-compliant charging via its integrated thermistor interface (THM pin) and OTP-programmable thermal regulation thresholds. It monitors battery temperature using an external NTC thermistor and dynamically adjusts charge current or halts charging based on predefined JEITA zones (e.g., 0–10 °C, 45–60 °C), with hysteresis of 0.5–5.0 °C to prevent oscillation.
What are the key differences between MC34PF1550A5EPR2 and MC34PF1550A3EPR2?
MC34PF1550A5EPR2 is configured for i.MX 6UL with standard DDR3 (1.5 V), while MC34PF1550A3EPR2 targets i.MX 6UL with DDR3L (1.35 V). Their OTP settings differ in SW1/SW2 default voltages, DDR timing parameters, and power-down sequences. Using MC34PF1550A3EPR2 with DDR3 memory may cause timing violations or instability due to incorrect VDDQ regulation.
Can MC34PF1550A5EPR2 operate with a 22 V transient on VBUSIN?
Yes, MC34PF1550A5EPR2's VBUSIN pin is rated to withstand up to +22 V DC transients, as specified in Table 5 of the datasheet. This capability allows direct connection to industrial USB-C or adapter inputs without external TVS clamping, provided sustained operation remains within the 4.1–6.0 V operating range. The internal protection circuitry prevents latch-up or damage during brief overvoltage events.
How is the DDR reference voltage (VREFDDR) generated and what is its accuracy?
MC34PF1550A5EPR2 generates VREFDDR by dividing the VINREFDDR input voltage by two internally, producing a precise 0.5–0.9 V output capable of sourcing 10 mA. Accuracy is maintained via trimmed internal resistors; typical deviation is ±1% over temperature and load, meeting JEDEC DDR3 specification requirements for termination reference stability.
MC34PF1550A5EPR2 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)
MC34PF1550A5EPR2 FAQ
1.How can I place an order for MC34PF1550A5EPR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34PF1550A5EPR2 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 MC34PF1550A5EPR2 reliable?
The price and inventory of MC34PF1550A5EPR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34PF1550A5EPR2 is usually 5 days.
3.What payment methods are accepted for MC34PF1550A5EPR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34PF1550A5EPR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34PF1550A5EPR2?
MC34PF1550A5EPR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34PF1550A5EPR2 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 MC34PF1550A5EPR2?
For technical support, including MC34PF1550A5EPR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34PF1550A5EPR2 requirements.
6.How does Aetrix verify that MC34PF1550A5EPR2 is sourced from the original manufacturer or authorized distributors?
All MC34PF1550A5EPR2 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 MC34PF1550A5EPR2 meets industry standards.
7.What is the process for return or replacement of MC34PF1550A5EPR2?
All MC34PF1550A5EPR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC34PF1550A5EPR2, 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 MC34PF1550A5EPR2 part is unused and in its original packaging.
Return procedure for MC34PF1550A5EPR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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