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NXP Semiconductors MC34VR500V5ESR2
- Part No.:
- MC34VR500V5ESR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
MC34VR500V5ESR2.pdf
- Description:
- REGULATOR BUCK QUAD WITH UP TO
- Quantity:
- Payment:
- Shipping:
Inventory:1,321
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Product details
Overview
MC34VR500V5ESR2 from NXP Semiconductors is a multi-output DC/DC power management IC designed specifically for QorIQ LS1/T1 communication processors. It integrates four buck regulators (SW1: 4.5 A, SW2: 2.0 A, SW3: 2.5 A, SW4: 1.0 A VTT-tracking), five LDOs, DDR3L reference (REFOUT), and I²C programmability - delivering complete system power for LS102X processors, DDR3L memory, and peripherals in compact networking equipment.
For engineers reviewing the MC34VR500V5ESR2 datasheet, MC34VR500V5ESR2 pinout, MC34VR500V5ESR2 application, or MC34VR500V5ESR2 equivalent, key selection criteria include VTT tracking capability for DDR3L termination at 0.675 V, factory-configured startup sequence (SW4 enabled, LDO2/LDO3 at 1.8 V/2.5 V, SW1/SW2 at 1.5 V), thermal protection thresholds up to 130 °C, and QFN-56 8×8 mm EP package with exposed thermal pad.
Technical Context
The MC34VR500V5ESR2 implements a SMARTMOS-based PMIC architecture with integrated high-side/low-side MOSFETs per buck stage, supporting PWM, PFM, and APS operating modes. Its power control logic includes dedicated processor interface signals (EN, STBY, PORB, INTB) and event-driven sequencing aligned to LS102X boot requirements.
It features dual clock domains: a trimmed 16 MHz RC oscillator (±8%) for active-mode timing and regulation, and an untrimmed 32 kHz RC oscillator used only during low-power states (SLEEP, UVLO). All regulator outputs are software-programmable via I²C, including voltage, current limit, soft-start, and sequencing order - with factory-default configuration stored in non-volatile registers.
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 rails without external pre-regulation |
| SW1 Output Current | 4.5 A - powers LS102X core (VDDC) with dynamic voltage scaling support |
| SW4 Mode | VTT tracking - generates DDR3L termination voltage at 50% of SW3 output (0.675 V when SW3 = 1.35 V) |
| REFOUT Accuracy | ±1% - provides stable DDR3L reference voltage for memory interface compliance |
| Thermal Protection | 130 °C shutdown threshold - prevents die damage under sustained overload or poor PCB thermal design |
| I²C Interface | Standard-mode (100 kHz) and fast-mode (400 kHz) - enables real-time rail reconfiguration during system operation |
| Operating Temp | −40 °C to +105 °C - qualified for industrial and extended-temperature networking applications |
Pinout & Package
MC34VR500V5ESR2 uses a 56-pin QFN-EP (8 mm × 8 mm, 0.5 mm pitch) with exposed thermal pad (EPAD). The package is optimized for high-current switching regulator thermal dissipation and requires direct connection of EPAD to internal/external ground planes via multiple vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-high logic signal controlling global PMIC power-up; pull-up to VBIAS required if not driven by processor |
| PORB | Open-drain reset output | Asserted low 2–4 ms after final regulator enables - used to release LS102X from hardware reset |
| INTB | Open-drain interrupt output | Active-low fault indicator (OCP, thermal, UVLO); requires external pull-up to VCCI2C or VVIN |
| STBY | Standby mode input | Configurable active-high/low signal triggering entry/exit from low-power standby state |
| FB1–FB4 | Voltage feedback inputs | High-impedance analog inputs for closed-loop regulation; require Kelvin routing away from high-current LX paths |
| LX1–LX4 | Switching node outputs | High-frequency, high-current nodes connecting to external inductors; must be routed short and wide with minimal loop area |
| REFOUT | DDR reference output | 10 mA buffered reference for DDR3L VREF; requires ≥1.0 μF ceramic bypass at pin |
| EPAD | Thermal ground | Primary thermal path to PCB; must be soldered to solid ground plane with ≥9 thermal vias (0.3 mm diameter) |
Key Features
| Feature | Design Value |
|---|---|
| VTT Tracking Mode | SW4 automatically tracks 50% of SW3 output voltage - eliminates need for external resistor divider and improves DDR3L termination accuracy across temperature/voltage |
| Factory-Programmed Startup | Pre-configured sequence for LS102X: SW1/SW2 at 1.5 V, SW3 at 1.35 V, SW4 in VTT mode, LDO2/LDO3 at 1.8 V/2.5 V - reduces firmware initialization overhead |
| Multi-Mode Regulation | Supports PWM (fixed-frequency), PFM (light-load efficiency), and APS (adaptive phase shift) - maintains >85% efficiency from 10 mA to full load |
| Integrated Thermal Monitoring | Four independent thermal interrupts (THERM110I–THERM130I) with 2–4 °C hysteresis - enables graded system response before shutdown |
| DDR3L Reference Compliance | REFOUT delivers ±1% accuracy over −40 °C to +105 °C - meets JEDEC DDR3L specification for VREF tolerance |
Applications
| IoT Gateway Power Management | Mobile Wireless Router |
|---|---|
Use Scenario: Compact indoor/outdoor gateway aggregating Zigbee, BLE, and Wi-Fi traffic onto LS1021A SoC with DDR3L memory and Ethernet PHY. IC Role / Device Role / Timing Role: MC34VR500V5ESR2 supplies all rails: VDDC (1.5 V @ 4.5 A), DDR3L VTT (0.675 V), and peripheral LDOs (1.8 V/2.5 V) while coordinating power-up sequence with LS1021A reset timing. Use Value: Eliminates discrete DC/DC + LDO + DDR reference solution, reducing BOM count by 12 components and PCB area by 35%. | Use Scenario: Battery-powered portable router using LS1022A with dual-band Wi-Fi, USB host, and LTE modem - requiring dynamic power state transitions. IC Role / Device Role / Timing Role: MC34VR500V5ESR2 manages rail sequencing during wake-from-sleep, enabling <250 μA standby current and sub-10 ms resume latency via STBY-controlled state machine. Use Value: Achieves 32 kΩ RC-based sleep mode with trimmed 16 MHz clock disabled - extending battery life by 4.2× vs. non-PMIC designs. |
| MFP Printer Controller | Network Attached Storage |
Use Scenario: Multifunction printer with LS1023A SoC driving scanner, print engine, and Gigabit Ethernet - subject to thermal cycling and transient load spikes. IC Role / Device Role / Timing Role: MC34VR500V5ESR2 delivers 2.5 A to LS1023A I/O domain (SW3), 1.0 A VTT for DDR3L, and 350 mA LDO3 for image sensor interface, with thermal interrupts feeding system watchdog. Use Value: On-die thermal monitoring triggers graceful shutdown at 125 °C - preventing print job corruption during sustained 60 °C ambient operation. | Use Scenario: Dual-bay NAS using LS1043A with SATA controllers, DDR4 memory (via compatible variant), and USB 3.0 - requiring reliable cold-start under varying input conditions. IC Role / Device Role / Timing Role: MC34VR500V5ESR2 ensures robust power-on reset assertion (PORB) within 4 ms of VIN stabilization, even with 2.8 V minimum input, synchronizing with LS1043A boot ROM execution. Use Value: UVLO detection at 2.65 V prevents brown-out lockup during capacitor discharge - improving system reliability in UPS-backed deployments. |
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 6 A buck; no integrated LDOs or DDR reference; AEC-Q100 automotive grade | Requires external LDOs and REF circuitry; lacks processor-specific sequencing logic | Select only if automotive qualification is mandatory and system can accommodate discrete support components |
| TPS65270PWP | Triple buck (3 A/2 A/2 A); no VTT tracking; no factory-programmed LS1/T1 sequence | Needs custom firmware to replicate LS102X startup timing; REFOUT not included | Choose when cost sensitivity outweighs time-to-market; requires additional I²C register programming effort |
Compared with MPQ4436-AEC1 and TPS65270PWP, MC34VR500V5ESR2 uniquely integrates VTT tracking, DDR3L REFOUT, and LS102X-optimized factory sequencing - reducing firmware development time by ~120 engineering hours and eliminating 7 passive components per board.
Availability
MC34VR500V5ESR2 is available at Aetrix Electronics and suitable for IoT gateways, mobile wireless routers, and MFP printers requiring stable component supply, guaranteed long-term availability, and full traceability for industrial deployment.
Supply support for MC34VR500V5ESR2 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 over 40 years of analog and power management IP expertise.
The MC34VR500 series belongs to NXP's QorIQ Power Management portfolio, engineered specifically to simplify power delivery for LS1/T1 family communication processors - minimizing design risk through factory-configured, application-validated sequences and DDR-compliant references.
FAQ
What is the default VTT voltage setting for MC34VR500V5ESR2?
The MC34VR500V5ESR2 is factory-configured for DDR3L VTT operation at 0.675 V, achieved by setting SW4 to track 50% of SW3's output. When SW3 is programmed to 1.35 V (its default startup value), SW4 automatically delivers 0.675 V without external resistors or firmware adjustment - ensuring JEDEC-compliant DDR3L termination.
Does MC34VR500V5ESR2 support DDR4 memory?
No, MC34VR500V5ESR2 is configured for DDR3L compatibility only. Its SW4 VTT tracking is fixed to 50% of SW3 and calibrated for DDR3L's 0.675 V requirement. For DDR4 (0.6 V VTT), NXP offers MC34VR500V3ESR2 and MC34VR500VAESR2 variants with different factory trim settings - MC34VR500V5ESR2 cannot be reconfigured for DDR4 VTT.
How does the thermal protection in MC34VR500V5ESR2 behave during overload?
MC34VR500V5ESR2 monitors die temperature continuously and asserts THERM130I interrupt at 130 °C (typical). If temperature exceeds 140 °C (thermal protection threshold), it initiates immediate shutdown. The protection is debounced for 8.0 ms to reject noise, and recovery requires cycling EN or power - ensuring fail-safe operation without latch-up during sustained overload.
Can MC34VR500V5ESR2 operate with input voltage below 2.8 V?
MC34VR500V5ESR2 has an absolute maximum rating of −0.3 V to 4.8 V on VIN, but its functional input range is 2.8 V to 4.5 V per datasheet specifications. Below 2.8 V, undervoltage lockout (UVDET) activates at 2.65 V, disabling all regulators and drawing only 17 μA. Sustained operation below 2.8 V is not characterized or guaranteed - MC34VR500V5ESR2 will not regulate correctly in that range.
What is the purpose of the ICTEST1 and ICTEST2 pins on MC34VR500V5ESR2?
ICTEST1 and ICTEST2 are reserved test pins for internal NXP wafer-level characterization and are not intended for system use. Per datasheet Table 2, both must be connected to GND in all application circuits. Leaving them floating may cause unpredictable behavior or reduced ESD robustness - MC34VR500V5ESR2 functionality is fully defined without any connection to these pins.
MC34VR500V5ESR2 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)
MC34VR500V5ESR2 FAQ
1.How can I place an order for MC34VR500V5ESR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34VR500V5ESR2 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 MC34VR500V5ESR2 reliable?
The price and inventory of MC34VR500V5ESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34VR500V5ESR2 is usually 5 days.
3.What payment methods are accepted for MC34VR500V5ESR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34VR500V5ESR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34VR500V5ESR2?
MC34VR500V5ESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34VR500V5ESR2 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 MC34VR500V5ESR2?
For technical support, including MC34VR500V5ESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34VR500V5ESR2 requirements.
6.How does Aetrix verify that MC34VR500V5ESR2 is sourced from the original manufacturer or authorized distributors?
All MC34VR500V5ESR2 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 MC34VR500V5ESR2 meets industry standards.
7.What is the process for return or replacement of MC34VR500V5ESR2?
All MC34VR500V5ESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC34VR500V5ESR2, 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 MC34VR500V5ESR2 part is unused and in its original packaging.
Return procedure for MC34VR500V5ESR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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