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NXP Semiconductors MC34VR500V1ES
- Part No.:
- MC34VR500V1ES
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
MC34VR500V1ES.pdf
- Description:
- IC REG 9OUT BUCK/LDO 56QFN
- Quantity:
- Payment:
- Shipping:
Inventory:453
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Product details
Overview
MC34VR500V1ES from NXP Semiconductors is a multi-output DC/DC power management IC designed specifically for QorIQ LS1020/21/22A 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 processor cores, DDR3L memory, and peripherals in compact IoT gateways.
For engineers reviewing the MC34VR500V1ES datasheet, MC34VR500V1ES pinout, MC34VR500V1ES application, or MC34VR500V1ES equivalent, this PMIC supports precise voltage sequencing, thermal fault interrupting (THERM110I–THERM130I), dynamic voltage scaling, and factory-configured startup for LS1021A IoT Gateway reference designs with DDR3L VTT = 0.675 V.
Technical Context
The MC34VR500V1ES implements a SMARTMOS-based power architecture with integrated high-side/low-side MOSFETs per buck stage, enabling efficient conversion across its 2.8–4.5 V input range. Its internal 16 MHz trimmed RC oscillator drives PWM timing, while dedicated bias/reference blocks support accurate DDR3L termination (VTT = 0.5 × SW3) and REFOUT regulation.
Power control logic enables direct processor interface via EN, STBY, PORB, and INTB signals, with programmable start-up sequence (12-step), PFM/PWM/APS modes, and register-mapped OCP, UVLO, and thermal thresholds - all accessible over a 3.6 V-tolerant I²C bus (SCL/SDA/VCCI2C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8 V to 4.5 V - supports single-cell Li-ion or 3.3 V ±10 % supply rails without external pre-regulation. |
| SW1 Output Current / Voltage | 4.5 A, 0.625–1.875 V - powers LS102x core (VDDC) with dynamic voltage scaling and soft-start programmability. |
| SW4 VTT Mode | Enabled, tracks 50 % of SW3 output - delivers precise DDR3L termination at 0.675 V (SW3 = 1.35 V) per JEDEC spec. |
| REFOUT Accuracy | ±1 % over -40 °C to +105 °C - provides stable DDR3L reference for memory interface timing margin. |
| I²C Interface Voltage | VCCI2C = 1.7–3.6 V - allows direct connection to 1.8 V or 3.3 V host controllers without level-shifting. |
| Thermal Protection | Four programmable thresholds (110–130 °C) with 2–4 °C hysteresis - generates masked interrupts before shutdown at 140 °C. |
| Quiescent Current (Standby) | 297 μA typical - enables low-power network standby in always-on IoT gateway applications. |
Pinout & Package
MC34VR500V1ES is housed in a thermally enhanced 56-pin QFN-EP (8 mm × 8 mm, 0.5 mm pitch) with exposed thermal pad (EP). The package supports high-current routing and PCB-level heat dissipation via vias to inner/outer ground planes (RθJB = 10 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (Pin 56) | Enable input | Active-high logic control; pull-up to VBIAS (8–100 kΩ) required for reliable turn-on in LS1021A systems. |
| PORB (Pin 3) | Open-drain reset output | Asserted low 2–4 ms after final regulator enable - used to release LS102x processor from hardware reset. |
| INTB (Pin 1) | Open-drain fault interrupt | Signals thermal, OCP, UVLO, or sequencing faults; requires external pull-up to VVIN for host MCU edge detection. |
| FB1–FB4 (Pins 13,19,25,38) | Voltage feedback inputs | High-impedance analog nodes; must be routed separately from LX traces to avoid noise coupling into regulation loop. |
| LX1–LX4 (Pins 8–9,11,21–22,35–36) | Switching node outputs | High dv/dt nodes requiring tight layout with local ceramic bypass (4.7 μF + 0.1 μF) and Kelvin grounding. |
| SGND1–SGND4 (Pins 14,15,32,48) | Signal ground returns | Dedicated ground pins per regulator domain - must connect directly to solid ground plane to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed startup sequence | Pre-configured for LS1021A IoT Gateway (SW1→SW2→SW3→SW4→LDOs→REFOUT) with 1.0 ms inter-rail delay. |
| VTT tracking accuracy | SW4 maintains 50 % ratio to SW3 output with <±10 mV error - meets DDR3L VTT tolerance for signal integrity. |
| Multi-mode regulation | Configurable PWM (fixed-frequency), PFM (light-load efficiency), and APS (adaptive phase-shift) per buck channel. |
| DDR3L reference stability | REFOUT delivers 10 mA at ±1 % over temperature - eliminates need for external DDR reference IC in LS102x designs. |
| Thermal interrupt granularity | Four independent thresholds (110/120/125/130 °C) with software-clearable flags - enables predictive thermal throttling. |
Applications
| IoT Gateway Power Management | Mobile Wireless Router |
|---|---|
Use Scenario: Compact, fanless residential gateway integrating LS1021A SoC, dual-band Wi-Fi, and Ethernet switching. IC Role / Device Role / Timing Role: Single-chip power source for VDDC (1.0 V), DDR3L (1.35 V + 0.675 V VTT), and peripheral LDOs (1.8 V, 2.5 V, 3.3 V). Use Value: Eliminates 9 discrete regulators; reduces BOM count by >60 % and PCB area by 45 % vs. discrete solution. |
Use Scenario: Battery-powered portable router with LTE backup, requiring ultra-low standby current and fast wake-up. IC Role / Device Role / Timing Role: Manages sequenced power-up of LS1021A, RF transceivers, and USB PHY under 3.7 V Li-ion input. Use Value: Achieves 297 μA standby current and <6 ms PORB assertion - enables sub-100 ms system boot from deep sleep. |
| MFP Printer Controller | Network Attached Storage |
Use Scenario: Multi-function printer with LS1021A-based imaging engine, scanner interface, and USB host. IC Role / Device Role / Timing Role: Supplies core, DDR3L, and mixed-signal rails (LDO2/LDO4 for ADC/DAC, LDO5 for USB PHY). Use Value: Integrated REFOUT and VTT eliminate external DDR reference IC; LDO soft-start prevents inrush-induced brownout. |
Use Scenario: Dual-core NAS appliance with LS1021A, SATA controllers, and Gigabit Ethernet PHY. IC Role / Device Role / Timing Role: Powers CPU, DDR3L memory, and peripheral interfaces (SATA 3.3 V, Ethernet 2.5 V, USB 3.3 V). Use Value: Programmable SW1/SW2 voltage scaling reduces dynamic power by 22 % during idle disk operations. |
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/2 A/2 A/1.5 A); no integrated DDR VTT or REFOUT; requires external reference. | Targeted at automotive infotainment; lacks LS102x-specific sequencing and DDR3L support. | Select only if automotive AEC-Q100 qualification is mandatory and DDR reference is implemented externally. |
| TPS65270 | 3-buck + 3-LDO PMIC; no VTT tracking; max SW1 = 3 A; no factory-programmed LS102x sequence. | General-purpose industrial use; requires full custom I²C configuration for LS102x compatibility. | Choose when cost sensitivity outweighs LS102x design acceleration - adds ~40 hours firmware integration effort. |
Compared with MPQ4436-AEC1 and TPS65270, the MC34VR500V1ES delivers LS102x-optimized power delivery with zero-customization startup, integrated DDR3L VTT/REFOUT, and thermal interrupt granularity - reducing time-to-market by eliminating reference design porting and validation overhead.
Availability
MC34VR500V1ES 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 guaranteed traceable sourcing for industrial deployments.
Supply support for MC34VR500V1ES 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 deep expertise in power management for communications processors.
The MC34VR500V1ES belongs to NXP's QorIQ LS1/T1 companion PMIC family, engineered to simplify power delivery for multicore ARM-based networking SoCs - reducing design complexity and accelerating time-to-market for edge infrastructure.
FAQ
What is the primary processor family supported by the MC34VR500V1ES?
The MC34VR500V1ES is specifically designed for the NXP QorIQ LS1020/21/22A family of communication processors. Its factory-programmed startup sequence, DDR3L VTT tracking, and REFOUT output match the LS1021A IoT Gateway reference design (TWR-LS1021A), ensuring plug-and-play compatibility without custom register configuration.
Does the MC34VR500V1ES support DDR4 memory?
No, the MC34VR500V1ES is configured for DDR3L operation with VTT = 0.675 V (50 % of SW3 = 1.35 V). For DDR4 support, NXP offers the MC34VR500V3ES and MC34VR500V7ES variants, which configure SW4 for VTT = 0.6 V - the MC34VR500V1ES does not support DDR4 voltage levels or timing requirements.
How is thermal protection implemented in the MC34VR500V1ES?
The MC34VR500V1ES features four independent thermal interrupt thresholds (110 °C, 120 °C, 125 °C, 130 °C) with 2–4 °C hysteresis. When crossed, it asserts INTB and sets corresponding bits (THERM110S–THERM130S) in INTSENSE0 register. Shutdown occurs only at 140 °C - the interrupts enable proactive thermal management in the host firmware before critical derating.
Can the MC34VR500V1ES be used with processors outside the LS1/T1 family?
While the MC34VR500V1ES can power other ARM-based SoCs, its factory-programmed startup sequence, default voltage settings (e.g., SW1 = 1.0 V, SW3 = 1.35 V), and LS102x-specific PORB timing are optimized for LS1020/21/22A. Using it with non-LS1/T1 processors requires full I²C reconfiguration of registers - the MC34VR500V1ES is not a generic PMIC but a purpose-built companion device.
What is the role of the VHALF pin on the MC34VR500V1ES?
The VHALF pin on the MC34VR500V1ES provides a precision half-supply reference derived from the internal bandgap, used to bias the DDR3L termination network. It connects to the DDR controller's VREF pin and ensures accurate VTT tracking relative to SW3 output - a critical requirement for DDR3L signal integrity that the MC34VR500V1ES implements without external components.
MC34VR500V1ES Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Tray
- 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)
MC34VR500V1ES FAQ
1.How can I place an order for MC34VR500V1ES through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34VR500V1ES 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 MC34VR500V1ES reliable?
The price and inventory of MC34VR500V1ES are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34VR500V1ES is usually 5 days.
3.What payment methods are accepted for MC34VR500V1ES?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34VR500V1ES transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34VR500V1ES?
MC34VR500V1ES orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34VR500V1ES 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 MC34VR500V1ES?
For technical support, including MC34VR500V1ES datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34VR500V1ES requirements.
6.How does Aetrix verify that MC34VR500V1ES is sourced from the original manufacturer or authorized distributors?
All MC34VR500V1ES 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 MC34VR500V1ES meets industry standards.
7.What is the process for return or replacement of MC34VR500V1ES?
All MC34VR500V1ES units undergo pre-shipment inspection (PSI). If there is an issue with MC34VR500V1ES, 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 MC34VR500V1ES part is unused and in its original packaging.
Return procedure for MC34VR500V1ES:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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