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NXP Semiconductors MC34VR5100A1EP
- Part No.:
- MC34VR5100A1EP
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MC34VR5100A1EP.pdf
- Description:
- IC REG 9OUT BUCK/LDO 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:245
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Product details
Overview
MC34VR5100A1EP from NXP Semiconductors is a multi-output DC/DC regulator IC designed specifically for LS1012 communication processors, integrating three buck converters (3.8 A, 1.25 A, 1.5 A), six adjustable LDOs, RTC supply, coin-cell charger, and DDR reference. It operates across –40 °C to +105 °C and supports I²C configuration with OTP-programmed startup sequencing for embedded communications systems.
For engineers reviewing the MC34VR5100A1EP datasheet, MC34VR5100A1EP pinout, MC34VR5100A1EP application, or MC34VR5100A1EP equivalent, key selection criteria include output voltage configurability per rail, buck converter mode selection (PWM/PFM/APS), thermal performance in QFN48 package, and compatibility with LS1012 processor power domains including DDR3L memory interface.
Technical Context
The MC34VR5100A1EP implements a tightly integrated power management architecture with dedicated switching regulators for core, I/O, and memory rails of the LS1012 processor. Its OTP memory stores device-specific configurations-including output voltages, soft-start timing, and startup sequence-enabling deterministic power-up without external firmware intervention.
Each buck stage features independent feedback (FB1–FB3), programmable current limits, and selectable operating modes optimized for dynamic load response and light-load efficiency. The integrated boost regulator (SWBST) delivers 5.0 V at 600 mA for USB or peripheral biasing, while the VSNVS switch provides always-on 3.3 V backup from VIN or coin cell.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8 V to 4.5 V - Supports single-cell Li-ion or regulated 3.3 V system rail with UVLO protection and LICELL-assisted low-voltage operation. |
| 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 LS1012 core, I/O, and DDR3L VDDQ requirements. |
| LDO Outputs | Six adjustable LDOs: LDO1–LDO4 (0.8–3.3 V, up to 350 mA), V33 (2.85–3.3 V @ 350 mA), VSD (1.8/3.3 V @ 100 mA) - Powers auxiliary logic, SDIO, and analog subsystems. |
| I²C Interface | Standard-mode (100 kHz) and fast-mode (400 kHz) compatible - Enables real-time voltage margining, fault monitoring, and dynamic voltage scaling during runtime. |
| Operating Temperature | –40 °C to +105 °C ambient - Qualified for industrial-grade deployment in networking edge devices and ruggedized communications hardware. |
| Package | 48-pin QFN, 7.0 mm × 7.0 mm, 0.4 mm pitch, exposed thermal pad - Optimized for high-power density PCB layouts with direct thermal coupling to internal ground planes. |
Pinout & Package
MC34VR5100A1EP uses a 48-pin QFN (7.0 mm × 7.0 mm) with exposed thermal pad (EP) tied to SGND for thermal dissipation. Pin functions are validated per NXP VR5100 datasheet Rev. 7.0, including dedicated feedback (FB1–FB3, FBBST), switch node (LX1–LX3, LXBST), and OTP/I²C control pins (EN, STBY, SCL, SDA, SD_VSEL).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Digital input | Active-high enable signal controlling global power-on sequencing; must be asserted after VIN stabilization. |
| FB1, FB2, FB3 | Analog feedback inputs | Resistor-divider nodes for closed-loop regulation of SW1–SW3 outputs; require Kelvin routing to minimize noise coupling. |
| LX1, LX2, LX3 | Switch node outputs | High-frequency switching nodes connecting to external inductors; require short, low-inductance PCB traces and local ceramic decoupling. |
| V33, VSD, VSNVS | Analog outputs | Regulated outputs for system I/O, SD card interface, and always-on backup supply; each requires specified ceramic output capacitance (2.2–4.7 µF). |
| SCL, SDA | I²C bidirectional interface | Open-drain digital bus requiring 4.7 kΩ pull-ups to VCCI2C; supports configuration, telemetry, and fault reporting during operation. |
| EP | Thermal ground pad | Exposed copper pad beneath package; must be connected via ≥4 thermal vias to inner/external GND planes for junction temperature control. |
Key Features
| Feature | Design Value |
|---|---|
| OTP-configurable startup sequence | Enables deterministic, glitch-free power-up of LS1012 processor domains without external sequencer or firmware dependency. |
| Three independent buck regulators with PFM/PWM/APS modes | Optimizes efficiency across full load range: PFM for ultra-low quiescent current (<25 µA in Off mode), APS for adaptive transient response. |
| Integrated coin-cell charger and VSNVS switch | Provides seamless RTC backup and always-on 3.3 V supply from either main rail or coin cell (1.8–3.3 V), eliminating external backup circuitry. |
| DDR reference voltage generator (REFOUT) | Delivers stable 0.9 V ±1% reference for DDR3L memory termination, reducing layout complexity and improving signal integrity. |
| Industrial temperature qualification (–40 °C to +105 °C) | Validated for continuous operation in uncontrolled environments such as outdoor base stations, industrial gateways, and telecom edge nodes. |
Applications
| LS1012-Based Edge Router | DDR3L Memory Power System |
|---|---|
|
Use Scenario: Compact fanless edge router with LS1012 processor, dual Ethernet, and PoE interface requiring reliable multi-rail power under thermal constraints. IC Role / Device Role / Timing Role: Primary PMIC managing all processor core, I/O, memory, and peripheral supplies with synchronized startup and I²C-monitored health status. Use Value: Reduces BOM count by consolidating 12+ discrete regulators into one IC, while OTP programming eliminates boot-time configuration delays. |
Use Scenario: High-reliability industrial data acquisition module using DDR3L SDRAM for buffering sensor streams in wide-temperature environments. IC Role / Device Role / Timing Role: Supplies VDD, VDDQ, and VREF for DDR3L with matched timing, tight voltage accuracy (±3%), and low-noise regulation. Use Value: Ensures DDR3L compliance with JEDEC JESD79-3F through dedicated REFOUT and simultaneous VDD/VDDQ ramping controlled by OTP sequence. |
| Low-Power Cellular Gateway | Secure Boot Embedded Controller |
|
Use Scenario: Battery-backed cellular IoT gateway operating on 3.3 V rail with intermittent LTE transmission bursts demanding dynamic power scaling. IC Role / Device Role / Timing Role: Delivers burst-mode power to modem subsystem via SWBST boost and manages sleep-state LDO retention (LDO1/LDO3) with <25 µA quiescent current. Use Value: Extends battery life by enabling deep-sleep states with VSNVS-powered RTC and wake-on-event capability via INTB interrupt. |
Use Scenario: Trusted execution environment (TEE) controller requiring tamper-resistant power sequencing and secure boot verification before releasing processor reset. IC Role / Device Role / Timing Role: Generates PORB reset signal only after all regulated rails meet tolerance and stability thresholds, enforced by internal state machine. Use Value: Prevents insecure boot by blocking processor release until OTP-validated power integrity is confirmed across all 11 outputs. |
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 | Automotive-qualified dual-buck + 4-LDO PMIC; no OTP, no coin-cell charger, no DDR reference; I²C only for monitoring. | Targets automotive infotainment with ASIL-B compliance; lacks LS1012-specific sequencing and DDR3L support. | Choose when automotive qualification and functional safety are required over LS1012 integration and DDR reference. |
| TPS65218D0 | ARM-based PMIC with 4 bucks + 4 LDOs; supports AM335x/AM437x; no built-in coin-cell charging; different I²C register map and OTP model. | Designed for Sitara processors; requires external sequencing logic for DDR3L; no VSNVS always-on switch functionality. | Choose for TI Sitara platforms where ecosystem tooling and SDK support outweigh LS1012-specific optimizations. |
Compared with MPQ4436-AEC1 and TPS65218D0, the MC34VR5100A1EP uniquely integrates OTP-programmed LS1012 power sequencing, DDR3L reference generation, and coin-cell-backed VSNVS-making it irreplaceable for NXP LS1012 designs without compromising on industrial temperature range or I²C configurability.
Availability
MC34VR5100A1EP is available at Aetrix Electronics and suitable for LS1012-based edge routers, DDR3L memory subsystems, and low-power cellular gateways requiring stable component supply, long-term lifecycle assurance, and industrial temperature qualification.
Supply support for MC34VR5100A1EP 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 communications markets, with deep expertise in ARM-based processor ecosystems.
The VR5100 product line was engineered specifically to address the complex, multi-rail power sequencing and DDR3L interface requirements of NXP's LS1 family of communication processors, emphasizing integration, configurability, and industrial reliability.
FAQ
What is the primary target processor for the MC34VR5100A1EP?
The MC34VR5100A1EP is specifically configured for the NXP LS1012A communication processor with DDR3L memory interface. Its OTP programming (A1 variant) defines startup timing, voltage levels, and sequencing optimized for LS1012A's power domains-including core, I/O, DDR3L VDDQ, and USB PHY rails-ensuring compliant and deterministic boot behavior without external configuration.
Does the MC34VR5100A1EP support DDR3L memory reference voltage generation?
Yes, the MC34VR5100A1EP includes a dedicated REFOUT regulator that delivers a precise 0.9 V ±1% DDR reference voltage. This output is internally trimmed and bypassed with 1.0 µF to ground, meeting JEDEC JESD79-3F requirements for DDR3L termination and eliminating the need for an external reference IC in LS1012A designs.
How does the MC34VR5100A1EP handle coin-cell backup and always-on power?
The MC34VR5100A1EP integrates both a coin-cell charger and the VSNVS always-on switch. When a valid coin cell (1.8–3.3 V) is present at LICELL, it charges the cell and powers VSNVS; if absent, VSNVS draws from VIN. This ensures uninterrupted RTC operation and wake-up capability-even during main power loss-without external diode-or or charge-management circuitry.
What buck regulator operating modes does the MC34VR5100A1EP support?
The MC34VR5100A1EP supports PWM, PFM, and Adaptive Peak Switching (APS) modes across all three buck regulators. PFM minimizes quiescent current (<25 µA in Off mode); PWM ensures fixed-frequency regulation under heavy loads; APS dynamically adjusts switching frequency and peak current to balance efficiency and transient response-critical for LS1012A's variable-core workloads.
Is the MC34VR5100A1EP pin-compatible with other VR5100 variants like MC34VR5100A0ES or MC34VR5100A2ES?
Yes, all VR5100 variants-including MC34VR5100A0ES, MC34VR5100A1ES, and MC34VR5100A2ES-share identical 48-pin QFN packaging and pinout. The differences lie solely in OTP programming (startup sequence, voltage settings, DDR type) and temperature grade (A1EP is industrial –40 °C to +105 °C), allowing drop-in replacement with firmware-aware configuration updates.
MC34VR5100A1EP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- LS1 Communication Processors
- Current - Supply:
- 450µA
- Voltage - Supply:
- 2.8V ~ 4.5V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-HVQFN (7x7)
MC34VR5100A1EP FAQ
1.How can I place an order for MC34VR5100A1EP through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34VR5100A1EP 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 MC34VR5100A1EP reliable?
The price and inventory of MC34VR5100A1EP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34VR5100A1EP is usually 5 days.
3.What payment methods are accepted for MC34VR5100A1EP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34VR5100A1EP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34VR5100A1EP?
MC34VR5100A1EP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34VR5100A1EP 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 MC34VR5100A1EP?
For technical support, including MC34VR5100A1EP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34VR5100A1EP requirements.
6.How does Aetrix verify that MC34VR5100A1EP is sourced from the original manufacturer or authorized distributors?
All MC34VR5100A1EP 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 MC34VR5100A1EP meets industry standards.
7.What is the process for return or replacement of MC34VR5100A1EP?
All MC34VR5100A1EP units undergo pre-shipment inspection (PSI). If there is an issue with MC34VR5100A1EP, 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 MC34VR5100A1EP part is unused and in its original packaging.
Return procedure for MC34VR5100A1EP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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