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NXP Semiconductors MC34VR500V8ESR2
- Part No.:
- MC34VR500V8ESR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
MC34VR500V8ESR2.pdf
- Description:
- REGULATOR BUCK QUAD WITH UP TO
- Quantity:
- Payment:
- Shipping:
Inventory:1,990
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Product details
Overview
MC34VR500V8ESR2 from NXP Semiconductors is a multi-output DC/DC power management IC designed specifically for QorIQ LS1/T1 communication processors, integrating four buck regulators (SW1: 4.5 A, SW2: 2.0 A, SW3: 2.5 A, SW4: 1.0 A in non-VTT mode), five LDOs, DDR reference generation (REFOUT), and I²C programmability. It powers the LS1046A processor, DDR memory subsystems, and system peripherals in network-attached storage and wireless router applications.
For engineers reviewing the MC34VR500V8ESR2 datasheet, MC34VR500V8ESR2 pinout, MC34VR500V8ESR2 application, or MC34VR500V8ESR2 equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal protection thresholds (130 °C shutdown), exact startup sequencing per Table 8, and real-world use cases aligned with LS1046ARDB-PA reference design.
Technical Context
The MC34VR500V8ESR2 implements a fully integrated PMIC architecture with independent PWM/PFM/APS control per buck regulator, factory-programmed startup sequence (SW4 disabled for VTT tracking), and dedicated 16 MHz trimmed RC oscillator for timing-critical operations. Its power control logic interfaces directly with LS1046A via EN, STBY, PORB, and INTB signals to coordinate system-level power states.
It features dynamic voltage scaling across all four buck outputs, programmable soft-start slew rates (e.g., 6.25 mV/μs for SW1), and thermal monitoring with four interrupt thresholds (THERM110I–THERM130I) plus 130 °C fail-safe shutdown. REFOUT provides a stable 10 mA DDR termination reference, while LDO1–LDO5 support configurable output voltages (e.g., LDO1: 0.8–1.55 V, 250 mA) for auxiliary rails.
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 supply without external pre-regulation |
| SW1 Output Current | 4.5 A - powers LS1046A core (VDD) with 0.85 V nominal output per Table 8 startup config |
| SW4 Mode | Non-VTT (1.0 V fixed) - disables DDR VTT tracking per V8ES variant definition in Table 1 |
| REFOUT Accuracy | ±1% - ensures precise DDR3L/DDR4 reference voltage for memory interface stability |
| Thermal Shutdown | 130 °C threshold - protects die under sustained overload or poor PCB thermal design |
| I²C Interface | Standard-mode (100 kHz) - enables full register read/write access for runtime voltage/frequency reconfiguration |
| Quiescent Current (Standby) | 297 μA typical - maintains all LDOs and REFOUT active while minimizing idle power in LS1046A low-power modes |
Pinout & Package
MC34VR500V8ESR2 uses a 56-pin QFN-EP (8 mm × 8 mm, 0.5 mm pitch) with exposed thermal pad (EP). Pin assignments are validated per NXP Document Number MC34VR500 Rev. 12 Section 3.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 56) | Enable input | Active-high logic signal controlling global power-up; requires pull-up to VBIAS (1.8 V) if not driven by processor |
| PORB (Pin 3) | Open-drain reset output | Asserts low for 2–4 ms after final regulator enables - used to release LS1046A from hardware reset |
| INTB (Pin 1) | Open-drain fault interrupt | Signals overcurrent, thermal, or UVLO faults; requires external pull-up to VCCI2C (3.3 V) |
| STBY (Pin 4) | Standby mode input | Directly controls entry/exit from standby state; polarity configurable via STBYINV bit |
| REFOUT (Pin 31) | DDR reference voltage output | Provides 1.0 V ±1% reference for DDR3L/DDR4 VREF; bypassed with ≥1.0 μF capacitor at pin |
| FB1–FB4 (Pins 13,19,25,38) | Voltage feedback inputs | High-impedance analog nodes requiring separate routing from high-current LX paths to avoid noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Four integrated buck regulators | Eliminates need for external MOSFETs and controllers - reduces BOM count and layout area for LS1046A designs |
| Factory-programmed startup sequence | Guarantees correct power-on order (e.g., SW1 before SW3) without firmware intervention per Table 8 for V8ES |
| Programmable PFM/PWM/APS modes | Optimizes efficiency across load range: PFM for light loads (<100 mA), PWM for heavy loads, APS for transient response |
| Dedicated DDR reference block | REFOUT + VHALF + REFIN circuitry meets JEDEC DDR3L/DDR4 VREF accuracy and noise requirements |
| Thermal protection with hysteresis | Four interrupt thresholds (110–130 °C) plus 2–4 °C hysteresis prevent oscillation during thermal transients |
| I²C register access | Enables runtime adjustment of output voltages, current limits, soft-start times, and sequencing - critical for dynamic DVFS |
Applications
| Network-Attached Storage (NAS) | Mobile Wireless Router |
|---|---|
Use Scenario: Powering LS1046A SoC, DDR4 memory, SATA controllers, and USB 3.0 PHY in compact NAS enclosures with passive cooling. IC Role / Device Role / Timing Role: Central PMIC managing all rail sequencing, DDR VREF generation, and thermal-aware throttling during sustained disk I/O. Use Value: Single-chip solution eliminates discrete regulator count, reduces PCB layer count, and guarantees JEDEC-compliant DDR4 VREF accuracy (±1%) for error-free data transfers. |
Use Scenario: Enabling battery-backed operation in portable 4G/5G routers using LS1046A with integrated Wi-Fi 6 and cellular modems. IC Role / Device Role / Timing Role: Regulating core, I/O, and memory rails while dynamically scaling SW1/SW2 voltages based on RF transmit power demands. Use Value: Programmable PFM/PWM modes cut quiescent current to 297 μA in standby, extending battery life without sacrificing wake-up latency. |
| IoT Gateway | Industrial MFP Printer |
Use Scenario: Supporting multi-protocol edge gateways (Zigbee, Thread, BLE, Ethernet) running Linux on LS1046A with dual DDR4 channels. IC Role / Device Role / Timing Role: Providing synchronized power-up of processor, DDR, and peripheral LDOs (LDO2–LDO5) per factory-configured sequence. Use Value: Eliminates external sequencer ICs - simplifies design validation and reduces time-to-market for certified IoT platforms. |
Use Scenario: Powering LS1046A-based imaging pipelines, scanner sensors, and motor drivers in multifunction printers operating at -40 °C to +105 °C. IC Role / Device Role / Timing Role: Delivering robust 4.5 A core rail with thermal shutdown at 130 °C and extended temperature qualification. Use Value: Qualified for industrial ambient range (-40 °C to +105 °C) with validated thermal resistance (RθJA = 15 °C/W on 8-layer board) ensures reliability in sealed printer chassis. |
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 4-channel buck (3 A/3 A/2 A/2 A); no integrated LDOs or DDR reference | Requires external LDOs and REFOUT circuit for LS1046A DDR interface | Choose only if automotive AEC-Q100 compliance is mandatory and DDR reference can be added externally |
| TPS65218D0 | ARM-specific PMIC with 4 bucks (3 A/2 A/2 A/1 A), 5 LDOs, but no DDR VREF or LS1046A-optimized sequencing | Lacks factory-programmed LS1046A startup sequence and REFOUT accuracy for DDR4 | Select when targeting AM57x/AM65x processors instead of QorIQ; not drop-in for LS1046A designs |
Compared with MPQ4436-AEC1 and TPS65218D0, MC34VR500V8ESR2 uniquely integrates LS1046A-validated sequencing, DDR4-compliant REFOUT, and industrial temperature rating - eliminating external components and qualification effort for QorIQ-based networking equipment.
Availability
MC34VR500V8ESR2 is available at Aetrix Electronics and suitable for network-attached storage, mobile wireless routers, and industrial IoT gateways requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MC34VR500V8ESR2 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.
The MC34VR500 product line was engineered to deliver complete, processor-matched power solutions for QorIQ LS1/T1 communication processors - reducing design complexity and accelerating time-to-market for networking infrastructure.
FAQ
What is the default SW4 configuration for MC34VR500V8ESR2?
The MC34VR500V8ESR2 has SW4 configured in non-VTT mode per Table 1 of the datasheet, delivering a fixed 1.0 V output instead of DDR termination tracking. This is confirmed in the "SW4 VTT mode" column for V8ES, where it is explicitly marked "Disabled". The MC34VR500V8ESR2 does not generate VTT; its SW4 output serves as a general-purpose 1.0 A rail.
Does MC34VR500V8ESR2 support DDR4 memory interfaces?
Yes, MC34VR500V8ESR2 supports DDR4 through its REFOUT regulator, which provides a ±1% accurate 1.0 V reference compliant with DDR4 VREF requirements. The VHALF and REFIN pins enable precise half-supply referencing, and the device is validated for LS1046A DDR4 operation per the LS1046ARDB-PA reference design.
What is the thermal shutdown threshold for MC34VR500V8ESR2?
The MC34VR500V8ESR2 triggers thermal shutdown at 130 °C, as specified in Table 5 ("Thermal Protection Threshold") of the datasheet. This fail-safe mechanism activates above the THERM130 threshold (120–140 °C) with 8 ms debouncing to prevent false trips from transient spikes.
How is the startup sequence programmed in MC34VR500V8ESR2?
The MC34VR500V8ESR2 uses factory-hardcoded startup sequencing defined in Table 8 of the datasheet. For V8ES, SW1 starts first (SEQ = 1), followed by SW2 (SEQ = 1), SW3 (SEQ = 3), and LDOs in defined order - no external programming is needed. Runtime modifications require I²C writes to internal registers after power-up.
What package type and dimensions does MC34VR500V8ESR2 use?
MC34VR500V8ESR2 uses a 56-pin QFN-EP package measuring 8 mm × 8 mm with 0.5 mm pitch and an exposed thermal pad (EP). This is documented in the "Packaging" section (Section 8) and confirmed by the "56 QFN-EP WF8X8" notation in the part's suffix description.
MC34VR500V8ESR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- QorlQ LS1/T1 Communications Processors
- Current - Supply:
- 2A
- Voltage - Supply:
- 2.8V ~ 4.5V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 56-QFN-EP (8x8)
MC34VR500V8ESR2 FAQ
1.How can I place an order for MC34VR500V8ESR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34VR500V8ESR2 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 MC34VR500V8ESR2 reliable?
The price and inventory of MC34VR500V8ESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34VR500V8ESR2 is usually 5 days.
3.What payment methods are accepted for MC34VR500V8ESR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34VR500V8ESR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34VR500V8ESR2?
MC34VR500V8ESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34VR500V8ESR2 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 MC34VR500V8ESR2?
For technical support, including MC34VR500V8ESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34VR500V8ESR2 requirements.
6.How does Aetrix verify that MC34VR500V8ESR2 is sourced from the original manufacturer or authorized distributors?
All MC34VR500V8ESR2 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 MC34VR500V8ESR2 meets industry standards.
7.What is the process for return or replacement of MC34VR500V8ESR2?
All MC34VR500V8ESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC34VR500V8ESR2, 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 MC34VR500V8ESR2 part is unused and in its original packaging.
Return procedure for MC34VR500V8ESR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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