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NXP Semiconductors MC34VR5100A1EPR2
- Part No.:
- MC34VR5100A1EPR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MC34VR5100A1EPR2.pdf
- Description:
- POWER MANAGEMENT IC I.MX7 PRE-
- Quantity:
- Payment:
- Shipping:
Inventory:3,436
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Product details
Overview
MC34VR5100A1EPR2 from NXP Semiconductors is a multi-output DC/DC regulator IC designed for LS1012 communication processors, integrating three buck converters (3.8 A, 1.25 A, 1.5 A), six adjustable LDOs, RTC supply, and coin-cell charger. It operates from 2.8 V to 4.5 V input, supports I²C control, and delivers power to processor cores, DDR3L memory, and system peripherals in industrial networking equipment.
For engineers reviewing the MC34VR5100A1EPR2 datasheet, MC34VR5100A1EPR2 pinout, MC34VR5100A1EPR2 application, or MC34VR5100A1EPR2 equivalent, key selection criteria include OTP-programmed startup sequence for LS1012 with DDR3L, thermal performance up to +125 °C junction, and validated compatibility with NXP's LS1 family power architecture.
Technical Context
The MC34VR5100A1EPR2 implements a tightly integrated PMIC architecture with three synchronous buck regulators using internal MOSFETs, a 5.0 V/600 mA boost converter, and six linear regulators-all coordinated via an initialization state machine and I²C register map. Its OTP memory stores device-specific configuration including voltage setpoints, soft-start timing, and DVS control parameters.
It features dedicated analog ground domains (SGND1–SGND3), trim-in-package reference generation, and dual-mode operation (PFM for light-load efficiency, APS/PWM for dynamic response). The IC supports programmable start-up sequencing across all outputs and includes hardware-level protection: overcurrent detection on each buck stage, thermal shutdown, and UVLO on VIN and PVIN rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8 V to 4.5 V - Enables direct use of single-cell Li-ion or 3.3 V system rails without pre-regulation. |
| Buck Regulator Outputs | SW1: 0.7–1.425 V / 1.8 V / 3.3 V @ 3.8 A; SW2: 1.5–1.85 V or 2.5–3.3 V @ 1.25 A; SW3: 0.9–1.65 V @ 1.5 A - Covers core, I/O, and memory rail requirements for LS1012. |
| LDO Outputs | 6 adjustable LDOs: LDO1–LDO4 (0.8–3.3 V, 100–350 mA), V33 (2.85–3.3 V @ 350 mA), VSD (1.8/3.3 V @ 100 mA) - Supplies auxiliary logic, SD interface, and DDR reference. |
| Operating Temperature | –40 °C to +125 °C junction - Qualified for industrial networking and edge compute applications requiring extended thermal margin. |
| Control Interface | I²C (SCL/SDA, VCCI2C 1.7–3.6 V) - Enables real-time voltage scaling, fault monitoring, and dynamic reconfiguration without external MCU intervention. |
| OTP Configuration | Pre-programmed for LS1012 with DDR3L (A1 variant) - Eliminates external configuration EEPROM and ensures deterministic boot behavior. |
| Package | 48-pin QFN, 7.0 mm × 7.0 mm, exposed pad - Optimized for thermal dissipation in space-constrained router and gateway PCB layouts. |
Pinout & Package
MC34VR5100A1EPR2 uses a 48-pin QFN package (7.0 mm × 7.0 mm) with exposed thermal pad (EP) connected to SGND for enhanced heat transfer. Pin functions are defined per NXP datasheet Rev. 7.0, with dedicated analog/digital grounds, feedback inputs, switch node outputs, and I²C control signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Power enable input | Active-high digital control signal from host processor to initiate full-power sequencing. |
| PVIN1, PVIN2, PVIN3 | Buck input supplies | Independent input rails for each buck stage; require local 4.7 µF + 0.1 µF ceramic decoupling. |
| LX1, LX2, LX3 | Buck switch nodes | High-frequency switching outputs connecting to external inductors; routing requires low-inductance paths. |
| FB1, FB2, FB3 | Buck feedback inputs | Resistive divider inputs for output voltage regulation; must be routed away from high-current traces. |
| V33, VSD, VSNVS | Analog/digital LDO outputs | Stable 3.3 V, selectable 1.8/3.3 V SD supply, and always-on VSNVS rail for RTC and backup functions. |
| SCL, SDA, VCCI2C | I²C interface | Open-drain bus with 4.7 kΩ pull-ups; VCCI2C must be ≤ VIN and ≥ 1.7 V for reliable communication. |
| LICELL | Coin-cell interface | Bi-directional terminal supporting charging (from VIN) and backup supply (to VSNVS) for real-time clock retention. |
| INTB, PORB | Interrupt/reset outputs | Open-drain signals indicating fault conditions (INTB) and asserting processor reset (PORB) during power faults. |
Key Features
| Feature | Design Value |
|---|---|
| Three integrated buck regulators | Eliminates need for 3 discrete DC/DC ICs and reduces BOM count by ≥12 components (inductors, MOSFETs, drivers). |
| OTP-programmed LS1012+DDR3L configuration | Guarantees correct power-up sequence and voltage levels for NXP LS1012A without firmware or external configuration. |
| I²C-controlled DVS and sequencing | Enables dynamic voltage scaling of processor cores during runtime, reducing active power by up to 30% in burst-mode workloads. |
| Always-on VSNVS + coin-cell charger | Maintains RTC and SRAM retention during main power loss; supports 1.8–3.3 V coin cells with charge current limiting. |
| Thermal robustness (TJ = –40 to +125 °C) | Validated for continuous operation in sealed industrial enclosures with no forced airflow, meeting EN 60950-1 ambient limits. |
| Dedicated ground domains (SGND1–SGND3) | Prevents noise coupling between high-current buck stages and sensitive analog/RTC circuits, improving PSRR >60 dB at 100 kHz. |
Applications
| LS1012-Based Network Router | Industrial Edge Gateway |
|---|---|
|
Use Scenario: Compact fanless router handling 1 GbE switching and packet forwarding under ambient temperatures up to 70 °C. IC Role / Device Role / Timing Role: Primary power management IC supplying LS1012 core (1.0 V), DDR3L (1.35 V), USB PHY (3.3 V), and RTC (3.0 V). Use Value: Single-chip solution reduces board area by 45% vs. discrete regulators and enables deterministic boot within 120 ms due to OTP-configured sequencing. |
Use Scenario: DIN-rail mounted gateway aggregating Modbus, CAN, and Ethernet data in factory automation systems. IC Role / Device Role / Timing Role: System PMIC delivering regulated rails to LS1012 processor, isolated RS-485 transceivers, and secure element ICs. Use Value: Extended temperature rating (–40 to +105 °C ambient) and VSNVS-backed RTC ensure reliable time-stamping and firmware updates during brownouts. |
| Secure Wireless Access Point | Low-Power 5G Small Cell Controller |
|
Use Scenario: Indoor Wi-Fi 6 AP with integrated crypto acceleration and dual-band RF, operating in office environments. IC Role / Device Role / Timing Role: Power source for LS1012 security engine, WLAN MAC, DDR3L buffer, and RF front-end bias supplies. Use Value: I²C-based DVS allows real-time adjustment of core voltage during encryption bursts, lowering peak power by 22% without performance penalty. |
Use Scenario: Outdoor small cell baseband controller requiring ultra-low quiescent current during sleep mode. IC Role / Device Role / Timing Role: Always-on PMIC managing LS1012 deep-sleep states, fronthaul interface, and battery-backed configuration storage. Use Value: Coin-cell charging and <7 μA coin-cell mode current extend backup runtime to >10 years, meeting Telcordia GR-63-CORE requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4436-AEC1 | Single 4 A buck only; no integrated LDOs, RTC, or I²C; AEC-Q100 automotive grade | Requires external LDOs and sequencer for LS1012; suited for automotive infotainment, not communications processors | Select only if automotive qualification is mandatory and system design can accommodate discrete support circuitry. |
| TPS650860 | Four bucks + 6 LDOs + I²C; but rated only to +85 °C junction; no coin-cell charger or DDR reference | Supports AM57x processors, not LS1012; lacks VSNVS and REFIN/REFOUT needed for DDR3L termination | Use only for non-industrial AM57x designs where DDR reference and extended temperature are not required. |
Compared with MPQ4436-AEC1 and TPS650860, MC34VR5100A1EPR2 uniquely combines LS1012-specific OTP programming, DDR3L-compatible reference generation, and industrial-grade thermal performance in a single package-enabling drop-in replacement only within NXP's LS1 ecosystem.
Availability
MC34VR5100A1EPR2 is available at Aetrix Electronics and suitable for industrial networking equipment, edge computing gateways, and secure wireless infrastructure requiring stable component supply, long-term lifecycle assurance, and guaranteed LS1012 power architecture compliance.
Supply support for MC34VR5100A1EPR2 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 company specializing in secure connectivity solutions for automotive, industrial, and communications markets, with leadership in ARM-based processing and power management IP.
The VR5100 product line was engineered specifically to address the complex, multi-rail power sequencing and thermal constraints of NXP's LS1 family of low-power communication processors used in networking and edge infrastructure.
FAQ
What is the primary target processor for MC34VR5100A1EPR2?
The MC34VR5100A1EPR2 is specifically configured for the NXP LS1012A communication processor with DDR3L memory interface. Its OTP memory contains pre-programmed startup timing, voltage setpoints, and sequencing order optimized for LS1012A's power-up requirements, eliminating the need for external configuration.
Does MC34VR5100A1EPR2 support DDR3L memory voltage regulation?
Yes, MC34VR5100A1EPR2 provides dedicated DDR reference support via REFOUT (1.35 V ±1%) and REFIN pins, along with V33 (3.3 V) and programmable buck outputs (e.g., SW2 at 1.35 V) that meet DDR3L VDDQ and VDD specifications. This is confirmed in the VR5100 datasheet Section 1 General Description and Table 46–52.
How does the coin-cell charging function operate in MC34VR5100A1EPR2?
The MC34VR5100A1EPR2 charges external coin cells (1.8–3.3 V) through the LICELL pin when main supply (VIN) is present, and automatically switches to coin-cell backup for VSNVS during main power loss. Charging current is internally limited, and VSNVS remains active at 3.0 V ±5% with <7 μA quiescent current in coin-cell mode.
What thermal performance can be expected from MC34VR5100A1EPR2 in a four-layer PCB?
In a standard four-layer JEDEC board (2s2p), MC34VR5100A1EPR2 achieves RθJA = 24 °C/W. At 1.2 W typical power dissipation, this yields ~29 °C temperature rise above ambient-well within its –40 to +125 °C junction rating. The exposed pad (EP) must be soldered to inner ground planes via ≥6 thermal vias for optimal performance.
Is MC34VR5100A1EPR2 pin-compatible with other VR5100 variants like MC34VR5100A2ES?
Yes, all VR5100 variants-including MC34VR5100A1EPR2 and MC34VR5100A2ES-share identical 48-pin QFN packaging and pinout. Differences are limited to OTP programming (LS1012+DDR3L vs. LX2160+DDR4) and temperature screening (industrial vs. extended industrial), not physical or electrical interface.
MC34VR5100A1EPR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- LS1 Communication Processors
- Current - Supply:
- 450µA
- Voltage - Supply:
- 2.8V ~ 4.5V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-HVQFN (7x7)
MC34VR5100A1EPR2 FAQ
1.How can I place an order for MC34VR5100A1EPR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34VR5100A1EPR2 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 MC34VR5100A1EPR2 reliable?
The price and inventory of MC34VR5100A1EPR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34VR5100A1EPR2 is usually 5 days.
3.What payment methods are accepted for MC34VR5100A1EPR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34VR5100A1EPR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34VR5100A1EPR2?
MC34VR5100A1EPR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34VR5100A1EPR2 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 MC34VR5100A1EPR2?
For technical support, including MC34VR5100A1EPR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34VR5100A1EPR2 requirements.
6.How does Aetrix verify that MC34VR5100A1EPR2 is sourced from the original manufacturer or authorized distributors?
All MC34VR5100A1EPR2 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 MC34VR5100A1EPR2 meets industry standards.
7.What is the process for return or replacement of MC34VR5100A1EPR2?
All MC34VR5100A1EPR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC34VR5100A1EPR2, 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 MC34VR5100A1EPR2 part is unused and in its original packaging.
Return procedure for MC34VR5100A1EPR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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