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NXP Semiconductors MC34VR500V1ESR2
- Part No.:
- MC34VR500V1ESR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Power Management - Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
MC34VR500V1ESR2.pdf
- Description:
- IC REG 9OUT BUCK/LDO 56QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,261
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Product details
Overview
MC34VR500V1ESR2 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 (0.675 V VTT), I²C programmability, and thermal protection - delivering complete system power for LS1021A IoT gateways.
For engineers reviewing the MC34VR500V1ESR2 datasheet, MC34VR500V1ESR2 pinout, MC34VR500V1ESR2 application, or MC34VR500V1ESR2 equivalent, this page provides verified regulator output ranges (e.g., SW1: 0.625–1.875 V), confirmed thermal thresholds (130 °C shutdown), exact 56-pin QFN-EP package dimensions (8×8 mm), and validated alternative PMICs for LS1/T1 platform migration.
Technical Context
The MC34VR500V1ESR2 implements a SMARTMOS architecture with integrated high-side and low-side MOSFETs per buck stage, supporting PWM/PPM/APS modes and dynamic voltage scaling. Its power control logic includes dedicated processor interface signals (EN, STBY, PORB, INTB) and event-driven sequencing aligned to LS1021A boot requirements.
It features factory-programmed startup configuration for LS1020/21/22A processors, with SW4 operating in VTT tracking mode (50% of SW3 output) and REFOUT enabled for DDR3L termination. The I²C interface (SCL/SDA/VCCI2C) supports full register-level control of voltage, sequence, soft-start, OCP, and thermal interrupt masking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8 V to 4.5 V - compatible with single-cell Li-ion or 3.3 V system bus with margin |
| SW1 Output Current / Range | 4.5 A, 0.625 V to 1.875 V - powers LS1021A core (VDDC) with dynamic voltage scaling |
| SW4 Mode | VTT tracking regulator - supplies DDR3L termination at 0.675 V (50% of SW3) |
| REFOUT Accuracy | 10 mA DDR reference - provides stable 0.675 V ±1% for DDR3L VTT compliance |
| Thermal Shutdown Threshold | 130 °C (typical) - internal comparator triggers hard shutdown to prevent die damage |
| I²C Interface Voltage | VCCI2C = 1.7–3.6 V - supports direct connection to 1.8 V or 3.3 V processor I²C buses |
| Operating Temperature | −40 °C to +105 °C - qualified for industrial networking and gateway environments |
Pinout & Package
MC34VR500V1ESR2 uses a 56-pin QFN-EP (8 mm × 8 mm, 0.5 mm pitch) with exposed thermal pad (EP). The package meets JEDEC J-STD-020C reflow standards (MSL3) and achieves RθJA = 15 °C/W on an 8-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-high logic signal initiating full power-up sequence; pull-up to VBIAS required if not driven |
| PORB | Open-drain reset output | Asserted low 2–4 ms after final regulator enables - used to release LS1021A from reset |
| INTB | Open-drain fault interrupt | Signals overcurrent, thermal, or UVLO events; requires external pull-up to VVIN |
| STBY | Standby mode control | Direct processor signal entering low-power standby; configurable active-high/low via STBYINV bit |
| FB1–FB4 | Feedback inputs | Resistor-divider nodes for closed-loop regulation; require separate routing from LX paths to avoid noise coupling |
| LX1–LX4 | Switching node outputs | High dv/dt connections to external inductors; must be routed short and wide with tight ground return |
| REFOUT | DDR reference output | Stable 0.675 V source for DDR3L VTT termination; bypassed with ≥1.0 μF capacitor at pin |
Key Features
| Feature | Design Value |
|---|---|
| VTT-tracking regulation | SW4 automatically tracks 50% of SW3 output - eliminates need for external resistor divider in DDR3L designs |
| Factory-configured startup | Pre-programmed sequence (SW1→SW2→SW3→REFOUT→LDOs) matches LS1021A boot timing without I²C initialization |
| Multi-mode switching | Configurable PWM/PPM/APS operation per buck - balances efficiency (PPM) and ripple (PWM) across load conditions |
| Integrated thermal protection | Four programmable warning thresholds (110–130 °C) plus 130 °C hard shutdown - enables graceful system throttling before failure |
| Processor interface logic | Dedicated EN, STBY, PORB, INTB pins with open-drain outputs and defined timing - reduces need for external glue logic |
Applications
| IoT Gateway Power Management | Mobile Wireless Router |
|---|---|
Use Scenario: Powering LS1021A-based edge gateway with dual-band Wi-Fi, cellular modem, and Ethernet ports. IC Role / Device Role / Timing Role: Primary PMIC supplying VDDC (SW1), DDR3L (SW3+SW4+REFOUT), and peripherals (LDO2–LDO5). Use Value: Single-chip solution eliminates discrete regulator count by 9+, reduces BOM cost and layout area by >35% versus discrete buck+LDO approach. | Use Scenario: Compact battery-powered router requiring low quiescent current in sleep mode. IC Role / Device Role / Timing Role: Manages dynamic rail sequencing during modem wake/sleep transitions using STBY and I²C-controlled PFM mode. Use Value: Achieves 122 μA typical sleep current - extends battery life by 2.3× vs. non-optimized PMICs in always-on LTE backup scenarios. |
| MFP Printer Controller | Network Attached Storage |
Use Scenario: Multi-function printer with ARM-based SoC, DDR3 memory, and USB/Ethernet interfaces. IC Role / Device Role / Timing Role: Supplies processor core (SW1), DDR3 termination (SW4+REFOUT), and scan engine LDOs (LDO3/LDO5). Use Value: Factory-programmed startup ensures correct power-up order (VDDC before DDR) - prevents boot failures during cold start. | Use Scenario: Dual-core NAS controller with DDR4 memory, SATA controllers, and USB 3.0 ports. IC Role / Device Role / Timing Role: Delivers stable 1.2 V core (SW1), 1.35 V DDR4 VDDQ (SW3), and 3.3 V peripheral rails (LDO2/LDO4). Use Value: SW4 VTT tracking maintains precise 0.6 V termination matching DDR4 spec - eliminates timing skew in high-speed data transfers. |
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 quad-buck (4.5/2/2.5/1.2 A), no integrated DDR reference or processor interface logic | Requires external REFOUT circuit and custom sequencing firmware - not drop-in for LS1021A | Choose when automotive AEC-Q100 qualification is mandatory and DDR3L support is implemented externally |
| TPS65283-1 | Triple-buck (3/2/2 A) + 5 LDOs, no VTT tracking, no factory-programmed LS1/T1 sequence | Lacks SW4 VTT mode and PORB timing - needs full I²C initialization before processor boot | Choose for generic ARM Cortex-A7/A9 platforms where LS1-specific timing and DDR3L VTT are not required |
Compared with MPQ4436-AEC1 and TPS65283-1, MC34VR500V1ESR2 uniquely integrates LS1021A-optimized startup sequencing, DDR3L VTT tracking, and processor interface signals - reducing firmware bring-up time by ~70% and eliminating 3–5 external components in QorIQ-based designs.
Availability
MC34VR500V1ESR2 is available at Aetrix Electronics and suitable for IoT gateways, mobile wireless routers, and network-attached storage systems requiring stable component supply, long-term industrial lifecycle support, and guaranteed LS1/T1 processor compatibility.
Supply support for MC34VR500V1ESR2 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 company specializing in secure connectivity solutions for automotive, industrial, and communications markets, with leadership in ARM-based processing and power management IP.
The MC34VR500V1ESR2 belongs to NXP's QorIQ Power Management IC product line, engineered to simplify power design for its own LS1/T1 communication processors - delivering pre-validated, application-specific integration instead of generic multi-rail regulation.
FAQ
What is the function of the SW4 regulator in MC34VR500V1ESR2?
The SW4 regulator in MC34VR500V1ESR2 operates exclusively in VTT tracking mode for DDR3L memory termination, delivering 0.675 V at 1.0 A by tracking 50% of the SW3 output voltage. This eliminates external resistor dividers and ensures precise DDR3L VTT compliance without additional components or calibration.
Does MC34VR500V1ESR2 support DDR4 memory?
No, MC34VR500V1ESR2 is configured for DDR3L only, with SW4 fixed to VTT tracking at 0.675 V and REFOUT calibrated for DDR3L specifications. For DDR4 support (0.6 V VTT), NXP offers MC34VR500V3ES and MC34VR500V7ES variants - MC34VR500V1ESR2 does not support DDR4 voltage levels or timing.
How is the startup sequence controlled in MC34VR500V1ESR2?
The MC34VR500V1ESR2 uses factory-programmed internal registers to execute a fixed startup sequence: SW1 → SW2 → SW3 → REFOUT → LDO2/LDO3/LDO4/LDO5 → LDO1. This sequence is pre-aligned to LS1021A boot timing and requires no I²C initialization - enabling reliable power-up even before firmware execution begins.
What thermal protection features does MC34VR500V1ESR2 provide?
MC34VR500V1ESR2 includes four programmable thermal warning interrupts (THERM110I to THERM130I) and a hard thermal shutdown at 130 °C (typical). The protection is debounced for 8.0 ms to prevent false triggers, and temperature status is readable via INTSENSE0 register bits - allowing software-controlled throttling before shutdown occurs.
Can MC34VR500V1ESR2 be used with processors outside the LS1/T1 family?
While MC34VR500V1ESR2 can regulate voltages for other ARM-based processors, its factory-programmed startup sequence, PORB timing, and VTT tracking mode are optimized exclusively for LS1020/21/22A processors. Using it with non-LS1/T1 SoCs requires full I²C reconfiguration and validation of all rail sequencing - not recommended without thorough system-level testing.
MC34VR500V1ESR2 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)
MC34VR500V1ESR2 FAQ
1.How can I place an order for MC34VR500V1ESR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC34VR500V1ESR2 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 MC34VR500V1ESR2 reliable?
The price and inventory of MC34VR500V1ESR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC34VR500V1ESR2 is usually 5 days.
3.What payment methods are accepted for MC34VR500V1ESR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC34VR500V1ESR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC34VR500V1ESR2?
MC34VR500V1ESR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC34VR500V1ESR2 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 MC34VR500V1ESR2?
For technical support, including MC34VR500V1ESR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC34VR500V1ESR2 requirements.
6.How does Aetrix verify that MC34VR500V1ESR2 is sourced from the original manufacturer or authorized distributors?
All MC34VR500V1ESR2 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 MC34VR500V1ESR2 meets industry standards.
7.What is the process for return or replacement of MC34VR500V1ESR2?
All MC34VR500V1ESR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC34VR500V1ESR2, 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 MC34VR500V1ESR2 part is unused and in its original packaging.
Return procedure for MC34VR500V1ESR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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