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NXP Semiconductors MC34VR500V2ESR2
- Part No.:
- MC34VR500V2ESR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
MC34VR500V2ESR2.pdf
- Description:
- IC REG 9OUT BUCK/LDO 56QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,806
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Product details
Overview
MC34VR500V2ESR2 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), five LDOs, DDR reference generation, and I²C programmability - delivering complete system power for processor cores, DDR3L memory, and peripherals in compact networking edge devices.
For engineers reviewing the MC34VR500V2ESR2 datasheet, MC34VR500V2ESR2 pinout, MC34VR500V2ESR2 application, or MC34VR500V2ESR2 equivalent, this PMIC supports precise voltage sequencing, dynamic voltage scaling, thermal fault monitoring, VTT tracking disable (per V2 variant), and low-power mode control - critical for IoT gateways, mobile routers, and industrial embedded systems requiring robust, integrated power delivery.
Technical Context
The MC34VR500V2ESR2 implements a SMARTMOS-based power architecture with fully independent regulation paths: SW1–SW4 operate as synchronous buck converters with programmable output voltages (SW1: 0.625–1.875 V; SW4: 0.625–1.975 V, non-VTT mode), while five LDOs provide low-noise auxiliary rails (LDO1: 0.8–1.55 V / 250 mA; LDO3: 1.8–3.3 V / 350 mA). All regulators are controlled via a single I²C interface with register-mapped sequencing, soft-start, and OCP configuration.
Its functional block includes dedicated DDR reference generation (REFOUT), internal 16 MHz trimmed RC oscillator for timing-critical startup and protection debouncing, and power control logic with PORB, INTB, and STBY signals for direct processor coordination. Thermal protection thresholds (110–130 °C) and junction-to-board thermal resistance (10 °C/W) confirm suitability for thermally constrained 56-pin QFN-EP packages in high-density PCB layouts.
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 bus without external pre-regulation |
| SW1 Output Current | 4.5 A - delivers core voltage for LS102x processors under full load with <1.5% load regulation |
| SW4 Mode | Disabled VTT tracking - configured per V2 variant for non-DDR termination applications (e.g., standalone peripheral rails) |
| LDO3 Output | 1.8–3.3 V / 350 mA - powers high-current peripherals like Ethernet PHYs or USB transceivers with <20 mV dropout at full load |
| I²C Interface | Standard-mode (100 kHz) and fast-mode (400 kHz) compatible - enables real-time voltage reconfiguration and fault logging without MCU firmware changes |
| Thermal Protection | Four programmable thresholds (110/120/125/130 °C) with 2–4 °C hysteresis - prevents thermal runaway during transient overload or airflow loss |
| Quiescent Current | 297 μA typical in Standby mode - maintains all rails active while minimizing idle power in always-on network edge nodes |
Pinout & Package
MC34VR500V2ESR2 uses a 56-pin QFN-EP (8 mm × 8 mm, 0.5 mm pitch) with exposed thermal pad (EPAD) for enhanced heat dissipation. The package complies with JEDEC J-STD-020C Pb-free reflow standards (MSL3) and achieves RθJB = 10 °C/W to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-high logic signal (0.8×VBIAS threshold) initiating full power-up sequence; pull-up required if driven by open-drain processor GPIO |
| PORB | Power-on reset output | Open-drain active-low signal asserted 2.0–4.0 ms after final regulator enables - used to release LS102x processor from hardware reset |
| INTB | Fault interrupt output | Open-drain active-low signal indicating thermal, overcurrent, or UVLO fault; requires external pull-up and software-clearable register bit |
| SCL/SDA | I²C interface | Bi-directional clock/data lines (3.6 V tolerant) enabling full register access for voltage, sequencing, and protection configuration |
| SW1–SW4 LX/FB | Switching node & feedback | High-frequency analog pins requiring separate routing from digital traces; FB inputs demand Kelvin connection to output capacitors for ±1% regulation accuracy |
| EPAD | Thermal & power ground | Exposed copper pad tied directly to inner/outer PCB ground planes via ≥6 thermal vias - mandatory for thermal performance and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Four integrated buck regulators | Eliminates need for 4 external MOSFETs, drivers, and compensation networks - reduces BOM count by ≥12 components and layout area by >30% |
| VTT tracking disable (V2 variant) | Removes DDR termination dependency - simplifies design for applications using DDR3L without VTT (e.g., MFP printers, ATMs) and avoids unnecessary SW4 current draw |
| Programmable start-up sequencing | Per-regulator enable order and delay (1.0 ms steps) ensures safe power-up of LS102x SoC, DDR3L, and peripherals - prevents latch-up and data corruption |
| DDR reference generation (REFOUT) | 10 mA buffered 0.6 V or 0.675 V output with <1% accuracy - supplies precise termination reference for DDR3L memory without external resistor divider |
| Multi-mode regulation (PWM/PFM/APS) | Enables >90% efficiency at full load (PWM) and <250 μA quiescent current at light load (PFM) - extends battery life in portable wireless routers |
| Integrated thermal protection | Dedicated comparator with four user-selectable trip points and hardware shutdown - provides fail-safe response before junction exceeds 125 °C |
Applications
| IoT Gateway Power Management | Mobile Wireless Router |
|---|---|
|
Use Scenario: Compact, fanless residential gateway with LS1021A SoC, dual-band Wi-Fi, and cellular backup. IC Role / Device Role / Timing Role: Primary PMIC supplying VDD (1.0 V @ 4.5 A), DDR3L (1.35 V @ 2.5 A), and peripheral rails (3.3 V LDOs) with synchronized startup. Use Value: Single-chip solution eliminates discrete DC/DC + LDO combinations, reducing thermal hotspots and enabling 2-layer PCB design. |
Use Scenario: Battery-powered LTE router deployed in vehicles with frequent thermal cycling and limited airflow. IC Role / Device Role / Timing Role: System power controller managing deep-sleep wake-up (297 μA standby), DDR self-refresh, and rapid core ramp-up on data arrival. Use Value: PFM mode operation and thermal warning interrupts (THERM110I) prevent brownouts during engine-start voltage sag and overheating in parked conditions. |
| MFP Printer Mainboard | Network Attached Storage Controller |
|
Use Scenario: Multi-function printer with LS1022A SoC, scanner ASIC, and USB host - requiring clean, sequenced power for mixed-signal subsystems. IC Role / Device Role / Timing Role: Centralized regulator providing isolated 1.2 V core, 1.8 V I/O, 3.3 V USB, and 2.5 V sensor rails with independent soft-start. Use Value: Five LDOs with <20 mV dropout eliminate need for external low-noise regulators, improving ADC accuracy and reducing EMI coupling into imaging path. |
Use Scenario: Dual-core NAS controller with LS1043A, SATA controllers, and Gigabit Ethernet - operating 24/7 in enclosed enclosures. IC Role / Device Role / Timing Role: High-reliability power manager delivering 1.5 V core, 1.2 V DDR4, and 3.3 V PHY rails with continuous thermal monitoring and fault logging via I²C. Use Value: Junction temperature sensing (THERM130I) triggers graceful shutdown before NAND flash or Ethernet PHY damage occurs - extending product lifetime. |
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 (3A/2A/2A/1.5A); no integrated LDOs or DDR reference; requires external sequencing logic | Targets automotive infotainment with AEC-Q100 Grade 2; lacks processor-specific startup config and REFOUT for DDR | Select only if automotive qualification is mandatory and system can implement external LDOs + DDR ref circuit |
| TPS65218D0 | ARM-specific PMIC (4 buck + 4 LDO); supports AM335x/AM437x; SW4 fixed at 1.8 V (no VTT option); I²C address fixed at 0x24 | Optimized for Sitara processors; no LS1/T1 register map compatibility or VTT-disable capability for MC34VR500V2ESR2 use cases | Choose only for TI ARM-based designs; not drop-in replaceable due to different sequencing registers and missing VTT disable |
Compared with MPQ4436-AEC1 and TPS65218D0, the MC34VR500V2ESR2 uniquely combines LS1/T1-optimized factory-programmed sequencing, VTT disable for non-DDR applications, and integrated DDR reference - making it irreplaceable for NXP QorIQ-based designs requiring minimal external components and guaranteed startup behavior.
Availability
MC34VR500V2ESR2 is available at Aetrix Electronics and suitable for IoT gateway, mobile wireless router, and MFP printer applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial production programs.
Supply support for MC34VR500V2ESR2 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 IoT markets, with annual R&D investment exceeding $1.5B.
The MC34VR500V2ESR2 belongs to NXP's QorIQ Power Management IC family, engineered specifically to simplify power delivery for LS1/T1 communication processors - reducing design risk, validation time, and board space in high-performance networking edge devices.
FAQ
What is the key functional difference between MC34VR500V2ESR2 and MC34VR500V1ESR2?
The MC34VR500V2ESR2 disables SW4 VTT tracking functionality per its factory configuration (Table 1), whereas MC34VR500V1ESR2 enables it for DDR3L termination. This makes MC34VR500V2ESR2 ideal for applications needing SW4 as a general-purpose 1.0 A buck rail (e.g., 1.8 V for USB PHY) without DDR-specific constraints. Both share identical pinout, package, and I²C register map.
Does MC34VR500V2ESR2 support DDR4 memory interfaces?
No, MC34VR500V2ESR2 does not support DDR4. Its REFOUT output and factory-configured SW4 voltage range (0.625–1.975 V) are specified for DDR3L (VTT = 0.675 V). DDR4 support requires MC34VR500V3ESR2 or MC34VR500V7ESR2 variants, which configure REFOUT for 0.6 V and enable VTT tracking at that level.
How is thermal protection implemented in MC34VR500V2ESR2?
MC34VR500V2ESR2 integrates four independent thermal comparators monitoring die temperature, generating interrupt signals THERM110I through THERM130I at thresholds of 110 °C, 120 °C, 125 °C, and 130 °C respectively. A final hardware shutdown activates at 140 °C (typical). All thresholds include 2–4 °C hysteresis and are debounced for 8.0 ms to reject noise-induced trips.
Can MC34VR500V2ESR2 be used with processors outside the LS1/T1 family?
Yes, MC34VR500V2ESR2 can power other SoCs, but its factory-programmed startup sequence, register defaults, and I²C command set are optimized for LS1/T1. Using it with non-NXP processors requires full register-level configuration via I²C - including disabling unused rails, redefining sequencing order, and verifying voltage compatibility - with no guarantee of out-of-box functionality.
What is the purpose of the VHALF pin on MC34VR500V2ESR2?
The VHALF pin on MC34VR500V2ESR2 provides a precision half-supply reference voltage derived from the internal bandgap, used exclusively as the feedback reference for the DDR termination regulator (REFOUT). It ensures accurate 0.675 V (DDR3L) or 0.6 V (DDR4) output regardless of input voltage variation or load transients - critical for signal integrity on high-speed DDR buses.
MC34VR500V2ESR2 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:
- 250µA
- 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)
MC34VR500V2ESR2 FAQ
1.How can I place an order for MC34VR500V2ESR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34VR500V2ESR2 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 MC34VR500V2ESR2 reliable?
The price and inventory of MC34VR500V2ESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34VR500V2ESR2 is usually 5 days.
3.What payment methods are accepted for MC34VR500V2ESR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34VR500V2ESR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34VR500V2ESR2?
MC34VR500V2ESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34VR500V2ESR2 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 MC34VR500V2ESR2?
For technical support, including MC34VR500V2ESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34VR500V2ESR2 requirements.
6.How does Aetrix verify that MC34VR500V2ESR2 is sourced from the original manufacturer or authorized distributors?
All MC34VR500V2ESR2 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 MC34VR500V2ESR2 meets industry standards.
7.What is the process for return or replacement of MC34VR500V2ESR2?
All MC34VR500V2ESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC34VR500V2ESR2, 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 MC34VR500V2ESR2 part is unused and in its original packaging.
Return procedure for MC34VR500V2ESR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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