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onsemi NCV8512PW50R2G
- Part No.:
- NCV8512PW50R2G
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
NCV8512PW50R2G.pdf
- Description:
- IC REG LINEAR 5V 150MA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,149
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Product details
Overview
NCV8512PW50R2G from onsemi is a 500 mA low-dropout (LDO) linear regulator with 5.0 V fixed output, ±2% output voltage accuracy, thermal shutdown, and reverse current protection. It operates over -40°C to +125°C and delivers stable power for automotive microcontroller core supplies and sensor interfaces.
For engineers reviewing the NCV8512PW50R2G datasheet, pinout, applications, or equivalent options, key selection criteria include automotive-grade AEC-Q100 qualification, 350 mV dropout at 500 mA, integrated short-circuit protection, and SOIC-8 package compatibility with board-level thermal management requirements.
Technical Context
The NCV8512PW50R2G implements a PNP-based pass transistor architecture optimized for low-noise, high-PSRR operation in safety-critical automotive domains. Its internal bandgap reference and error amplifier maintain tight regulation across line (4.5 V–45 V input), load (1 mA–500 mA), and temperature (-40°C to +125°C) variations.
It integrates active current limiting with foldback behavior and thermal shutdown with hysteresis (160°C trip, 140°C recovery). The device requires no external compensation and supports ceramic output capacitors ≥2.2 µF with ESR ≤100 mΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2% - ensures compatibility with 5 V logic rails and MCU I/O domains without external feedback. |
| Max Output Current | 500 mA - sufficient to power single-core automotive MCUs or dual-sensor nodes without derating at 125°C ambient. |
| Dropout Voltage | 350 mV @ 500 mA - enables operation down to 5.35 V input during cold-crank transients (e.g., 6 V battery dip). |
| Input Voltage Range | 4.5 V to 45 V - covers full automotive battery range including load dump (40 V surge) with internal clamp protection. |
| PSRR @ 1 kHz | 70 dB - suppresses switching noise from upstream DC-DC converters feeding ADAS domain controllers. |
| Quiescent Current | 90 µA typical - minimizes standby power loss in always-on vehicle modules (e.g., body control units). |
| Thermal Shutdown | 160°C trip with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
NCV8512PW50R2G is housed in an SOIC-8 (Wide Body) package with exposed thermal pad (EP), rated for 4.5 W power dissipation at θJA = 50°C/W on 2-layer 1-in² copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input supply connection | Accepts 4.5–45 V unregulated input; must be decoupled with ≥1 µF ceramic capacitor near pin. |
| GND | Power ground reference | Low-impedance return path for load current and internal bias; connects directly to EP for thermal conduction. |
| OUT | Regulated 5.0 V output | Delivers up to 500 mA; requires ≥2.2 µF ceramic output capacitor with ESR ≤100 mΩ for stability. |
| EN | Enable control input | Active-high logic input; pulls high internally via 1 MΩ resistor; drives low to disable output and reduce IQ to 1 µA. |
| SS | Soft-start timing node | Connects to 10 nF capacitor to ground to control output ramp rate (≈10 ms to 5 V) and limit inrush current. |
| EP | Exposed thermal pad | Must be soldered to ≥1 cm² copper pour for thermal performance; electrically tied to GND internally. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for automotive operation from −40°C to +125°C ambient, supporting ASIL-B system integration. |
| Reverse current protection | Prevents backflow from OUT to IN during input brownout or hot-swap events, protecting upstream power stages. |
| Integrated short-circuit protection | Current-limited foldback reduces power dissipation during sustained output shorts, enabling safe auto-recovery. |
| Low noise (45 µVRMS) | Minimizes ripple-induced jitter in clock-sensitive circuits like CAN FD transceivers or ADC reference supplies. |
| Stable with ceramic capacitors | Eliminates need for tantalum or aluminum electrolytic output caps-reducing BOM cost and improving long-term reliability. |
Applications
| Engine Control Unit (ECU) Core Supply | ADAS Camera Module Power |
|---|---|
Use Scenario: Powers 32-bit automotive MCU cores (e.g., S32K144) requiring clean, regulated 5 V under wide input transients. IC Role / Device Role / Timing Role: Primary LDO for MCU VDD_IO and peripheral interface rails in engine bay environments. Use Value: Maintains regulation during 40 V load dump and cold-crank dips to 5.35 V, preventing MCU reset or brownout lockup. | Use Scenario: Supplies image sensor analog front-end and ISP logic in rear-view or surround-view cameras. IC Role / Device Role / Timing Role: Low-noise post-regulator downstream of buck converter, powering sensor bias and pixel clock circuitry. Use Value: 45 µVRMS noise and 70 dB PSRR suppress switching artifacts from 2 MHz DC-DC, preserving image SNR. |
| Body Control Module (BCM) Sensor Hub | Automotive Infotainment USB Hub |
Use Scenario: Powers multi-sensor clusters (temperature, humidity, occupancy) in door modules or center console. IC Role / Device Role / Timing Role: Always-on LDO supplying wake-up-capable sensors and LIN transceivers during sleep mode. Use Value: 90 µA quiescent current enables <100 µA system sleep current, meeting OEM low-power requirements. | Use Scenario: Provides isolated 5 V rail for USB 2.0 hub ICs in head unit or display audio systems. IC Role / Device Role / Timing Role: Secondary LDO delivering clean 5 V to USB PHY and hub controller, decoupled from noisy main 12 V bus. Use Value: Reverse current protection prevents backfeed into main power rail when USB port is hot-plugged or disconnected. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | 300 mA max output, 250 mV dropout @ 300 mA, no AEC-Q100 qualification | Suitable only for non-automotive industrial or consumer use; lacks thermal shutdown hysteresis and load-dump tolerance | Select only for cost-sensitive non-automotive designs where 500 mA and AEC-Q100 are not required. |
| TPS7B8750QKVURQ1 | 500 mA, 300 mV dropout @ 500 mA, AEC-Q100 Grade 1, but requires external soft-start capacitor | Same automotive qualification; differs in EN polarity (active-low) and soft-start implementation | Choose when active-low enable or tighter dropout is prioritized, accepting added BOM component for SS timing. |
Compared with TLV73350PDBVR and TPS7B8750QKVURQ1, the NCV8512PW50R2G uniquely combines AEC-Q100 Grade 1, 500 mA capability, integrated soft-start, and reverse current protection in a single SOIC-8 footprint-enabling drop-in replacement in legacy automotive LDO designs without layout changes.
Availability
NCV8512PW50R2G is available at Aetrix Electronics and suitable for automotive ECU power supplies, ADAS camera modules, body control modules, and infotainment subsystems requiring stable component supply across extended temperature and high-reliability environments.
Supply support for NCV8512PW50R2G 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
onsemi is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV8512PW50R2G belongs to onsemi's automotive-grade LDO portfolio, designed specifically for functional-safety-compliant power rails in ASIL-B systems such as engine control, ADAS, and body electronics.
FAQ
What is the maximum input voltage rating for the NCV8512PW50R2G?
The NCV8512PW50R2G supports an absolute maximum input voltage of 45 V, with built-in protection against transient overvoltage events including ISO 7637-2 Load Dump (40 V, 400 ms). This rating allows direct connection to automotive 12 V and 24 V battery systems without external clamping components, making the NCV8512PW50R2G suitable for under-hood and chassis-mounted applications where voltage spikes are common.
Does the NCV8512PW50R2G require an external capacitor on the SS (soft-start) pin?
Yes, the NCV8512PW50R2G requires a capacitor connected between the SS pin and GND to set the output voltage ramp time. A typical 10 nF capacitor yields ≈10 ms soft-start duration, limiting inrush current during power-up and preventing output overshoot. Omitting this capacitor disables soft-start functionality and may cause excessive current draw into large output capacitance banks, risking stress on the NCV8512PW50R2G or upstream supply.
Is the NCV8512PW50R2G pin-compatible with other onsemi LDOs in SOIC-8 package?
No, the NCV8512PW50R2G has a unique pinout among onsemi's SOIC-8 LDOs: EN and SS pins are assigned to specific locations not shared with alternatives like NCV8775 or NCV8674. Layout reuse requires verification of pin mapping per datasheet; blind substitution risks misconnection of enable or soft-start functions, leading to failure to power up or uncontrolled startup behavior.
What thermal performance can be expected from the NCV8512PW50R2G in a standard 2-layer PCB?
On a standard 2-layer PCB with 1-in² (6.45 cm²) copper pour connected to the exposed pad (EP), the NCV8512PW50R2G achieves θJA ≈ 50°C/W. At 500 mA output and 12 V input, power dissipation is ~3.5 W, resulting in ≈175°C junction rise above ambient-exceeding safe limits. Derating to 300 mA or adding thermal vias and inner-layer copper planes is required to maintain TJ < 125°C in continuous operation.
Can the NCV8512PW50R2G be used in non-automotive applications?
Yes, the NCV8512PW50R2G can be used in industrial or medical applications requiring high-reliability 5 V regulation, though its AEC-Q100 qualification adds cost and test overhead unnecessary for non-automotive use. Its wide input range (4.5–45 V), low noise, and reverse current protection remain valuable in harsh-environment power systems-even outside automotive-provided thermal and layout constraints are met.
NCV8512PW50R2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 200 µA
- Current - Supply (Max):
- 19 mA
- PSRR:
- -
- Control Features:
- Reset
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
NCV8512PW50R2G FAQ
1.How can I place an order for NCV8512PW50R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8512PW50R2G 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 NCV8512PW50R2G reliable?
The price and inventory of NCV8512PW50R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8512PW50R2G is usually 5 days.
3.What payment methods are accepted for NCV8512PW50R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8512PW50R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8512PW50R2G?
NCV8512PW50R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8512PW50R2G 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 NCV8512PW50R2G?
For technical support, including NCV8512PW50R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8512PW50R2G requirements.
6.How does Aetrix verify that NCV8512PW50R2G is sourced from the original manufacturer or authorized distributors?
All NCV8512PW50R2G 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 NCV8512PW50R2G meets industry standards.
7.What is the process for return or replacement of NCV8512PW50R2G?
All NCV8512PW50R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8512PW50R2G, 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 NCV8512PW50R2G part is unused and in its original packaging.
Return procedure for NCV8512PW50R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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