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NXP Semiconductors MC34VR500VBES
- Part No.:
- MC34VR500VBES
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
MC34VR500VBES.pdf
- Description:
- REGULATOR, BUCK, QUAD WITH UP TO
- Quantity:
- Payment:
- Shipping:
Inventory:1,991
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Product details
Overview
MC34VR500VBES from NXP Semiconductors is a multi-output DC/DC power management IC designed specifically for the LX2160 communications processor. It integrates four buck regulators (SW1: 4.5 A, SW2: 2.0 A, SW3: 2.5 A, SW4: 1.0 A), five LDOs, DDR reference generation (REFOUT), and I²C programmable control - delivering complete system power for processor cores, DDR memory, and peripherals in high-density networking equipment.
For engineers reviewing the MC34VR500VBES datasheet, MC34VR500VBES pinout, MC34VR500VBES application, or MC34VR500VBES equivalent, this device requires attention to its disabled VTT tracking mode (per orderable variant), LX2160-specific startup sequencing, thermal protection thresholds (110–130 °C), and QFN-56 EP (8×8 mm) package layout constraints for high-current switching nodes.
Technical Context
The MC34VR500VBES implements a SMARTMOS-based PMIC architecture with fully independent, I²C-configurable buck regulators operating in PWM/PPM/APS modes. Its internal 16 MHz trimmed RC oscillator enables precise timing for startup sequencing and fault debounce, while dedicated bias blocks (VDIG = 1.5 V, VCC = 3.6 V, VBG = 1.5 V) support analog core stability and DDR reference accuracy (REFOUT).
Power control logic includes processor interface signals (EN, STBY, PORB, INTB), dynamic voltage scaling capability, and factory-programmed startup sequence (SW4_SEQ = 5, LDO1_SEQ = 0, VTT disabled). Thermal protection uses four discrete thresholds (THERM110I–THERM130I) with 2–4 °C hysteresis and 8 ms debouncing to prevent false shutdowns during transient load events.
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 bus without external pre-regulation |
| SW1 Output Current | 4.5 A - powers LX2160 core rail (VDD) with 0.625–1.875 V programmable range |
| SW4 Mode | VTT disabled - configured for standard 0.625–1.975 V output (not DDR termination tracking) |
| I²C Interface | Standard-mode (100 kHz) and fast-mode (400 kHz) compatible - enables full register read/write for voltage, sequencing, and fault monitoring |
| Thermal Protection | Four threshold interrupts (110/120/125/130 °C) + 140 °C shutdown - ensures safe operation under sustained high-power loads |
| Package | 56-pin QFN-EP, 8 mm × 8 mm, 0.5 mm pitch - exposed pad provides <1.2 °C/W junction-to-case thermal resistance |
| Operating Temperature | −40 °C to +105 °C - qualified for industrial and telecom infrastructure environments |
Pinout & Package
MC34VR500VBES is housed in a thermally enhanced 56-pin QFN-EP (8 mm × 8 mm, 0.5 mm pitch) with an exposed thermal pad (EP) connected to SGND. The package supports high-current routing via multiple PVIN/LX pins per regulator and dedicated signal ground planes (SGND1–SGND4) to minimize noise coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 56) | Enable input | Active-high logic input; pull-up to VBIAS (1.8 V) required if not driven by processor - initiates full power-up sequence |
| PORB (Pin 3) | Open-drain reset output | Asserted low 2.0–4.0 ms after last regulator enables - used to release LX2160 from hardware reset |
| INTB (Pin 1) | Open-drain interrupt output | Active-low fault indicator (OCP, thermal, UVLO); requires external pull-up to VCCI2C (3.3 V) |
| STBY (Pin 4) | Standby mode control | Processor-driven signal to enter/exit standby; polarity configurable via STBYINV bit in register map |
| REFOUT (Pin 31) | DDR reference voltage output | Stable 0.6–0.9 V reference (10 mA sink/source) for DDR3L/DDR4 VREF - routed separately from noisy switching nodes |
| FB1–FB4 (Pins 13,19,25,38) | Feedback inputs | Analog voltage sense points; require Kelvin connection to output capacitors - critical for ±1% regulation accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power MOSFETs | Eliminates need for 9 external high-side/low-side FETs - reduces BOM count and PCB area for LX2160 power tree |
| Programmable Startup Sequence | Factory-configured 12-step sequence (SW4_SEQ = 5, LDO1_SEQ = 0) ensures safe LX2160 boot - modifiable via I²C post-deployment |
| Multi-Mode Regulation | PWM (fixed-frequency), PFM (light-load efficiency), and APS (adaptive phase-shift) modes - optimizes efficiency across 1 μA–4.5 A load range |
| DDR Memory Support | Dedicated REFOUT (0.6–0.9 V) and VHALF (half-supply reference) enable compliant DDR3L/DDR4 termination - no external resistor divider needed |
| Thermal Fault Management | Four independent temperature interrupts (THERM110I–THERM130I) with software-clearable flags - enables predictive thermal throttling before shutdown |
Applications
| LX2160-Based Secure Gateway | 5G Small Cell Baseband Unit |
|---|---|
Use Scenario: High-throughput, low-latency packet forwarding in enterprise SD-WAN gateways with hardware-accelerated crypto and DPAA2. IC Role / Device Role / Timing Role: Primary PMIC supplying all rails (VDD, DDR, peripherals) with synchronized startup and DDR VREF generation. Use Value: Single-chip solution eliminates discrete regulator count, reduces layout complexity, and ensures LX2160-compliant power sequencing per NXP reference design TWR-LX2160A. |
Use Scenario: Compact, fanless 5G NR baseband processing unit requiring high-efficiency power delivery under variable RF load. IC Role / Device Role / Timing Role: System-level power manager coordinating CPU, DDR4, FPGA I/O, and RF front-end bias rails. Use Value: PFM mode extends battery backup runtime; thermal interrupts enable dynamic clock scaling before junction exceeds 125 °C. |
| Industrial IoT Edge Controller | Network Attached Storage (NAS) Appliance |
Use Scenario: Ruggedized edge server running real-time analytics on time-sensitive sensor data in harsh environments. IC Role / Device Role / Timing Role: Robust power source with −40 °C to +105 °C operation, UVLO protection, and fault-reporting via INTB. Use Value: Integrated thermal protection prevents field failures due to enclosure overheating; I²C registers allow runtime voltage tuning for workload optimization. |
Use Scenario: Multi-bay NAS platform with dual LX2160 SoCs managing RAID controllers, NVMe SSDs, and 10GbE interfaces. IC Role / Device Role / Timing Role: Dual-PMIC configuration powering primary and secondary SoC domains with independent sequencing. Use Value: REFOUT and VHALF outputs ensure DDR4 compliance across both memory subsystems; shared I²C bus simplifies firmware integration. |
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-grade 4-channel buck (3 A/3 A/2 A/2 A); no integrated LDOs or DDR reference; AEC-Q100 qualified | Targets automotive ADAS ECU, not communications processors; lacks I²C programmability and LX2160-specific sequencing | Select only for automotive environments requiring AEC-Q100; requires external LDOs and DDR reference circuitry |
| TPS65218D0 | ARM-specific PMIC (4 buck, 4 LDO); supports AM335x/AM437x; 1.8–3.3 V LDO range only; no VTT or DDR reference | Designed for Sitara processors, not QorIQ/LX families; incompatible startup register map and I²C command set | Use only in TI ARM-based designs; cannot substitute for MC34VR500VBES without full hardware/firmware redesign |
Compared with MPQ4436-AEC1 and TPS65218D0, the MC34VR500VBES delivers processor-matched sequencing, integrated DDR reference generation, and factory-configured LX2160 startup - eliminating external components and reducing validation effort for NXP-based platforms.
Availability
MC34VR500VBES is available at Aetrix Electronics and suitable for secure gateway, 5G small cell, and industrial edge controller applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for mission-critical deployments.
Supply support for MC34VR500VBES 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 SoC power management.
The MC34VR500VBES belongs to NXP's QorIQ LS1/T1/LX family PMIC product line, engineered to deliver tightly integrated, processor-optimized power solutions for high-performance communications processors - minimizing design risk and accelerating time-to-market.
FAQ
What is the key differentiator of MC34VR500VBES versus generic multi-rail PMICs?
The MC34VR500VBES is uniquely optimized for the LX2160 processor, featuring factory-programmed startup sequencing (SW4_SEQ = 5, LDO1_SEQ = 0), disabled VTT mode per its VBES suffix, and integrated DDR4 reference generation (REFOUT/VHALF). Unlike generic PMICs, it eliminates external components and reduces firmware integration effort through NXP-specific I²C register mapping and power control logic.
Does MC34VR500VBES support DDR4 memory termination?
Yes, MC34VR500VBES supports DDR4 via its dedicated REFOUT output (0.6–0.9 V, 10 mA) and VHALF half-supply reference pin. However, its SW4 regulator operates in standard buck mode (0.625–1.975 V), not VTT tracking - so external termination resistors or a separate VTT generator are required for DDR4 VTT compliance.
How is thermal protection implemented in MC34VR500VBES?
MC34VR500VBES features four independent thermal interrupt signals (THERM110I, THERM120I, THERM125I, THERM130I) with 2–4 °C hysteresis and 8 ms debouncing. When junction temperature crosses any threshold, INTB asserts low. The thermal shutdown threshold is 140 °C. These functions are enabled by default and require no external components.
What are the critical layout requirements for MC34VR500VBES?
MC34VR500VBES requires strict adherence to layout guidelines: (1) connect EP pad to inner/outer ground planes using ≥6 vias; (2) route FB1–FB4 traces separately from LX nodes with Kelvin connections to output caps; (3) place 4.7 μF + 0.1 μF ceramic bypasses within 2 mm of each PVIN pin; (4) isolate REFOUT/VHALF routing from noisy switching paths to maintain DDR reference accuracy.
Can MC34VR500VBES be used with processors outside the LX2160 family?
While MC34VR500VBES can power other devices, its factory-programmed startup sequence, register map, and I²C command set are specifically validated for LX2160. Using it with non-NXP processors requires full register reconfiguration, custom sequencing logic, and validation of all 12 startup steps - increasing design risk and qualification time significantly.
MC34VR500VBES Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- Processor
- Current - Supply:
- 297µA
- Voltage - Supply:
- 2.8V ~ 4.5V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 56-QFN-EP (8x8)
MC34VR500VBES FAQ
1.How can I place an order for MC34VR500VBES through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34VR500VBES 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 MC34VR500VBES reliable?
The price and inventory of MC34VR500VBES are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34VR500VBES is usually 5 days.
3.What payment methods are accepted for MC34VR500VBES?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34VR500VBES transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34VR500VBES?
MC34VR500VBES orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34VR500VBES 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 MC34VR500VBES?
For technical support, including MC34VR500VBES datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34VR500VBES requirements.
6.How does Aetrix verify that MC34VR500VBES is sourced from the original manufacturer or authorized distributors?
All MC34VR500VBES 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 MC34VR500VBES meets industry standards.
7.What is the process for return or replacement of MC34VR500VBES?
All MC34VR500VBES units undergo pre-shipment inspection (PSI). If there is an issue with MC34VR500VBES, 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 MC34VR500VBES part is unused and in its original packaging.
Return procedure for MC34VR500VBES:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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