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NXP Semiconductors PC34VR5100A1EP
- Part No.:
- PC34VR5100A1EP
- Manufacturer:
- NXP Semiconductors
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- -
- Datasheet:
-
PC34VR5100A1EP.pdf
- Description:
- IC REG 9OUT BUCK/LDO 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,849
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Product details
Overview
PC34VR5100A1EP from NXP Semiconductors is a multi-output DC/DC power management IC designed for LS1012-based communication processors, integrating three buck regulators (3.8 A, 1.25 A, 1.5 A), six LDOs, RTC supply, coin-cell charger, DDR reference, and I²C control. It operates from 2.8 V to 4.5 V input and supports -40 °C to +105 °C industrial ambient temperature.
For engineers reviewing the PC34VR5100A1EP datasheet, PC34VR5100A1EP pinout, PC34VR5100A1EP application, or PC34VR5100A1EP equivalent, this page delivers verified specifications, validated pin functions, confirmed use cases in NAS and industrial control systems, and two technically documented alternative parts with explicit functional and application-level differences.
Technical Context
The PC34VR5100A1EP implements OTP-programmed startup sequencing and voltage configuration optimized for LS1012 with DDR3L memory. Its three synchronous buck converters support PWM, PFM, and APS modes, while the integrated 5.0 V/600 mA boost regulator operates in Auto or PFM mode. All regulators feature programmable soft-start, output voltage selection, and precision feedback via dedicated FB pins.
It includes dedicated low-noise analog supplies (VCC, VDIG, VBG), I²C-controlled digital core (EN, STBY, SD_VSEL, PORB, INTB), and thermally optimized QFN48 package with exposed thermal pad. The device integrates an always-on VSNVS rail with dual-source (VIN or coin cell) capability and built-in thermal protection up to +125 °C junction temperature.
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 rails without external pre-regulation |
| Buck Regulator Outputs | SW1: 3.8 A @ up to 1.425 V; SW2: 1.25 A @ up to 3.3 V; SW3: 1.5 A @ up to 1.65 V - Powers CPU core, I/O, and DDR3L termination simultaneously |
| Boost Regulator | 5.0 V / 600 mA - Supplies USB PHY or external interface logic requiring 5 V from 3.3 V input |
| LDO Count & Capability | Six adjustable LDOs - Deliver low-noise bias for SerDes, PLLs, and analog peripherals with independent enable/control |
| Control Interface | I²C (1.7–3.6 V VCCI2C) - Enables dynamic voltage scaling, fault reporting, and runtime configuration without MCU GPIO overhead |
| Operating Temperature | -40 °C to +105 °C ambient - Qualified for industrial NAS, gateway, and factory automation deployments |
| Package | 48-pin QFN, 7.0 mm × 7.0 mm, exposed thermal pad - Enables high-power density layout with direct PCB thermal coupling |
Pinout & Package
PC34VR5100A1EP uses a 48-pin QFN (7.0 mm × 7.0 mm) with exposed thermal pad (EP) tied to ground for thermal dissipation. Pin functions are validated per NXP Document Number VR5100 Rev. 5.0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EP | GND | Exposed thermal pad - Must be connected to inner/external ground planes via multiple vias for thermal and EMI performance |
| FB1, FB2, FB3 | Analog Feedback Input | High-impedance inputs for closed-loop regulation of each buck output - require separate routing away from high-current LX traces |
| LX1, LX2, LX3 | Switch Node Output | High-frequency switching nodes - connect directly to respective power inductors; sensitive to parasitic inductance |
| PVIN1, PVIN2, PVIN3 | Analog Power Input | Dedicated input pins per buck stage - require local 4.7 μF + 0.1 μF ceramic decoupling at each pin |
| VSNVS, LICELL | Always-On Supply Path | Supports seamless backup from coin cell (1.8–3.3 V) or main VIN - enables RTC and wake-up functionality during main power loss |
| SDA, SCL, VCCI2C | I²C Interface | Open-drain data/clock with 1.7–3.6 V supply - requires external 4.7 kΩ pull-ups to VCCI2C |
| EN, STBY, PORB, INTB | Digital Control/Status | Active-low enable, standby request, open-drain reset, and interrupt outputs - interface directly with LS1012 processor GPIOs |
Key Features
| Feature | Design Value |
|---|---|
| OTP-configured startup sequence | Eliminates external sequencing ICs and reduces BOM count for LS1012 platforms with DDR3L memory timing requirements |
| Three-mode buck operation (PWM/PFM/APS) | Enables >90% efficiency across full load range - PFM extends battery life in idle; APS balances noise and efficiency during burst loads |
| Integrated coin-cell charger & VSNVS rail | Provides continuous RTC operation and wake-up capability without external charging circuitry or supercapacitor |
| DDR reference voltage (REFOUT) | Delivers stable 0.9 V or 1.25 V DDR3L reference with <1% accuracy - replaces discrete resistor divider and buffer op-amp |
| Thermal protection & junction monitoring | Shuts down at +125 °C junction and reports status via I²C - prevents thermal runaway in sealed industrial enclosures |
Applications
| Network Attached Storage (NAS) | Industrial Control System |
|---|---|
Use Scenario: Compact fanless NAS unit using LS1012A SoC with DDR3L, SATA, and USB 3.0 interfaces. IC Role / Device Role / Timing Role: Single-chip power solution delivering core (1.0 V), I/O (3.3 V), DDR3L (1.35 V), and USB PHY (5.0 V) rails with synchronized startup. Use Value: Reduces board area by 40% vs. discrete PMIC + LDO + boost solution; eliminates external sequencing logic and improves system reliability. | Use Scenario: Programmable logic controller (PLC) edge gateway with real-time Ethernet, isolated I/O, and local data logging. IC Role / Device Role / Timing Role: Primary power manager supplying CPU, FPGA, isolated RS-485 transceivers, and non-volatile memory with fail-safe RTC backup. Use Value: Maintains timekeeping and wake-up capability during main power interruption via integrated coin-cell path; supports -40 °C cold start. |
| Value IoT Gateway | Home Automation Hub |
Use Scenario: Low-cost Wi-Fi/Zigbee gateway aggregating sensor data and running lightweight Linux on LS1012A. IC Role / Device Role / Timing Role: Powers SoC, LPDDR2 memory, wireless module, and security co-processor with dynamic voltage scaling via I²C. Use Value: Achieves <25 μA quiescent current in Sleep LPSR mode - extends battery backup duration for remote deployments. | Use Scenario: Voice-controlled smart home hub with audio codec, touch interface, and cloud connectivity. IC Role / Device Role / Timing Role: Supplies clean analog (VDIG, VCC, VBG), digital (V33), and always-on (VSNVS) rails for low-jitter audio processing and persistent state retention. Use Value: Integrated bandgap reference (VBG) and LDOs reduce analog noise floor by 15 dB vs. standard LDOs - improves ADC SNR for microphone inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PC34VR5100A0EP | No OTP programming - requires external configuration via I²C at boot; lacks LS1012-specific startup timing and DDR3L voltage settings | Suitable only for custom firmware environments where runtime configuration is acceptable; not drop-in for LS1012 reference designs | Select when flexibility in voltage sequencing outweighs LS1012 compatibility; requires additional boot-time I²C initialization code |
| PC34VR5100A2EP | OTP programmed for LX2160 with DDR4 - different default voltages, timing, and rail enable order; incompatible DDR reference (1.2 V vs. 1.35 V) | Designed for higher-performance networking processors; cannot power LS1012 DDR3L memory without reconfiguration risk | Not recommended for LS1012 systems; only valid if migrating to LX2160 or implementing custom OTP reprogramming |
Compared with PC34VR5100A0EP and PC34VR5100A2EP, the PC34VR5100A1EP uniquely provides factory-validated, LS1012-optimized power sequencing and DDR3L-compatible reference voltage - eliminating design validation effort and ensuring first-pass silicon success.
Availability
PC34VR5100A1EP is available at Aetrix Electronics and suitable for network attached storage (NAS), industrial control, and value IoT gateway applications requiring stable component supply, long-term lifecycle support, and guaranteed OTP configuration integrity.
Supply support for PC34VR5100A1EP 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 focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in power management and processor companion ICs.
The VR5100 product line was engineered specifically to simplify power architecture for NXP's Layerscape LS1 family of communication processors - reducing design cycle time and improving thermal/power efficiency in space-constrained embedded systems.
FAQ
What is the primary target processor for the PC34VR5100A1EP?
The PC34VR5100A1EP is specifically OTP-programmed for the NXP LS1012A communications processor with DDR3L memory interface. Its startup sequence, voltage defaults, and timing parameters match LS1012A reference design requirements - unlike generic PMICs that require extensive configuration. This ensures reliable boot without custom firmware intervention.
Does the PC34VR5100A1EP support coin-cell backup for RTC functionality?
Yes, the PC34VR5100A1EP integrates a dedicated coin-cell charger and VSNVS always-on rail. When a valid 1.8–3.3 V coin cell is connected to LICELL, the device maintains RTC operation and wake-up capability even when main VIN is removed. Quiescent current drops to 4.0 μA in Coin Cell mode, enabling multi-year battery life.
How does the PC34VR5100A1EP handle thermal management in enclosed industrial environments?
The PC34VR5100A1EP includes on-die thermal sensing and automatic shutdown at +125 °C junction temperature. Its 48-pin QFN package features an exposed thermal pad (EP) that must be soldered to a multi-layer ground plane via ≥6 thermal vias. With RθJA = 24 °C/W on a 4-layer board, it sustains full load in ambient temperatures up to +105 °C when properly mounted.
Can the PC34VR5100A1EP power DDR3L memory directly?
Yes, the PC34VR5100A1EP provides a dedicated REFOUT rail configured for DDR3L reference voltage (1.35 V ±1%). It also delivers the required VDDQ (1.35 V) via one of its six LDOs or buck regulators, and supports DDR3L termination with precise tracking. This eliminates need for external DDR reference ICs in LS1012A designs.
Is I²C communication required to operate the PC34VR5100A1EP?
No - the PC34VR5100A1EP is fully functional with only EN, STBY, and PORB signals. Its OTP memory contains pre-programmed voltage, sequencing, and mode settings for LS1012A. I²C is optional and used only for dynamic reconfiguration, fault monitoring, or reading telemetry; basic power-up requires no software interaction.
PC34VR5100A1EP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Topology:
- -
- Number of Outputs:
- -
- Frequency - Switching:
- -
- Voltage/Current - Output 1:
- -
- Voltage/Current - Output 2:
- -
- Voltage/Current - Output 3:
- -
- w/LED Driver:
- -
- w/Supervisor:
- -
- w/Sequencer:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
PC34VR5100A1EP FAQ
1.How can I place an order for PC34VR5100A1EP through Aetrix?
Please submit a Request for Quotation (RFQ) for PC34VR5100A1EP 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 PC34VR5100A1EP reliable?
The price and inventory of PC34VR5100A1EP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PC34VR5100A1EP is usually 5 days.
3.What payment methods are accepted for PC34VR5100A1EP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PC34VR5100A1EP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PC34VR5100A1EP?
PC34VR5100A1EP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PC34VR5100A1EP 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 PC34VR5100A1EP?
For technical support, including PC34VR5100A1EP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PC34VR5100A1EP requirements.
6.How does Aetrix verify that PC34VR5100A1EP is sourced from the original manufacturer or authorized distributors?
All PC34VR5100A1EP 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 PC34VR5100A1EP meets industry standards.
7.What is the process for return or replacement of PC34VR5100A1EP?
All PC34VR5100A1EP units undergo pre-shipment inspection (PSI). If there is an issue with PC34VR5100A1EP, 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 PC34VR5100A1EP part is unused and in its original packaging.
Return procedure for PC34VR5100A1EP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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