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onsemi NCV8504PW33G
- Part No.:
- NCV8504PW33G
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
NCV8504PW33G.pdf
- Description:
- IC REG LINEAR 3.3V 400MA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,364
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Product details
Overview
NCV8504PW33G from onsemi is an automotive-grade 3.3 V, 500 mA low-dropout (LDO) linear regulator in a 3 mm × 3 mm DFN-8 package with thermal shutdown, current limit, and reverse-battery protection. It delivers stable output under 100 mV dropout at full load and supports input voltages from 3.5 V to 45 V. It is used in body control modules, infotainment power rails, and ADAS sensor supplies.
For engineers reviewing the NCV8504PW33G datasheet, pinout, applications, or equivalent options, key selection criteria include automotive AEC-Q100 Grade 1 qualification, ±2% output voltage accuracy over temperature and line/load, integrated reverse-battery protection, and 45 V absolute maximum input rating for stop-start and load-dump resilience.
Technical Context
The NCV8504PW33G employs a PMOS pass transistor architecture enabling ultra-low dropout and inherent reverse-polarity protection without external components. Its internal bandgap reference and error amplifier maintain regulation across –40 °C to +150 °C junction temperature.
It integrates active current limiting with foldback and thermal shutdown with hysteresis, and features a precision enable pin with 0.9 V threshold and hysteresis for controlled sequencing in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% over –40 °C to +125 °C, ensuring reliable MCU core/logic supply in automotive environments. |
| Max Output Current | 500 mA continuous, sufficient for powering microcontrollers, CAN transceivers, and small sensors without external heatsinking. |
| Dropout Voltage | 100 mV at 500 mA, enabling operation down to 3.4 V input-critical during cold-crank conditions. |
| Input Voltage Range | 3.5 V to 45 V, supporting 12 V and 24 V vehicle architectures including load-dump transients. |
| Quiescent Current | 45 µA typical in active mode, minimizing standby power loss in always-on domains. |
| AEC-Q100 Grade | Grade 1 (–40 °C to +125 °C), qualified for engine bay and passenger compartment applications. |
| Protection Features | Reverse-battery protection, thermal shutdown with hysteresis, and current-limit foldback-no external diodes or circuitry required. |
Pinout & Package
NCV8504PW33G is housed in a thermally enhanced 3 mm × 3 mm, 0.5 mm pitch DFN-8 package with exposed thermal pad (EP) for PCB heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 3.5 V–45 V; connects directly to battery or pre-regulated rail with minimal input capacitance. |
| GND | Ground reference | Common return path for input, output, and internal circuitry; tied to EP for thermal conduction. |
| OUT | Regulated output | Delivers 3.3 V ±2% to load; requires 10 µF ceramic output capacitor for stability. |
| EN | Enable control input | Active-high logic input; 0.9 V threshold with hysteresis enables robust start-up sequencing. |
| BP | Bypass capacitor connection | Connects to 10 nF capacitor to reduce reference noise and improve PSRR above 10 kHz. |
| EP | Exposed thermal pad | Internally connected to GND; must be soldered to large copper pour for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-battery protection | Withstands –45 V input without damage or reverse current flow-eliminates need for external blocking diode. |
| Ultra-low quiescent current | 45 µA typical in active mode supports always-on ECU domains while meeting ISO 26262 sleep-state leakage targets. |
| High PSRR at 100 Hz | 75 dB PSRR enables clean 3.3 V rail for noise-sensitive ADCs and PLLs in mixed-signal ECUs. |
| Integrated thermal shutdown | Hysteresis of 20 °C prevents thermal cycling during overload; auto-recovery after cooldown. |
| Load transient response | ≤ 50 mV deviation for 100 mA step load change ensures stable operation for burst-mode microcontrollers. |
Applications
| Body Control Module (BCM) | ADAS Camera Power Supply |
|---|---|
Use Scenario: Powering microcontroller, CAN interface, and door-lock actuators in a centralized vehicle body controller. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying core logic and communication peripherals. Use Value: Reverse-battery protection and 45 V max input withstand load-dump events without system reset or component damage. | Use Scenario: Providing clean, low-noise 3.3 V bias to image sensor and ISP in forward-facing ADAS camera module. IC Role / Device Role / Timing Role: Post-regulator delivering stable voltage to analog front-end and digital processing blocks. Use Value: 75 dB PSRR at 100 Hz suppresses switching noise from upstream DC-DC converters, preserving image SNR. |
| Infotainment Head Unit | Telematics Control Unit (TCU) |
Use Scenario: Supplying 3.3 V to audio codec, touch controller, and display interface in dashboard infotainment system. IC Role / Device Role / Timing Role: Secondary LDO for low-power peripheral rails requiring tight voltage tolerance and low ripple. Use Value: ±2% output accuracy ensures reliable I²C/SPI timing margins and prevents data corruption during voltage sags. | Use Scenario: Powering cellular modem, GNSS receiver, and secure element in vehicle telematics gateway. IC Role / Device Role / Timing Role: Always-on LDO maintaining real-time clock and wake-up logic during deep sleep. Use Value: 45 µA quiescent current minimizes battery drain during extended parking, extending backup runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | 300 mA rated, 1.8 V–5.5 V input, no reverse-battery protection, not AEC-Q100 qualified. | Suitable only for non-automotive, low-current consumer applications with regulated input. | Select only if cost sensitivity outweighs automotive reliability and reverse-polarity requirements. |
| TLE42744GV50 | 500 mA, 40 V max input, integrated watchdog and reset generator, AEC-Q100 Grade 1. | Includes system-level supervision functions beyond regulation-adds complexity where not needed. | Prefer when reset monitoring and window watchdog are required alongside regulation. |
Compared with TLV73333PDBVR and TLE42744GV50, the NCV8504PW33G uniquely balances automotive qualification, reverse-battery resilience, and minimal BOM count-making it optimal for cost-constrained, safety-aware LDO applications without supervision overhead.
Availability
NCV8504PW33G is available at Aetrix Electronics and suitable for automotive body electronics, ADAS sensor modules, and infotainment subsystems requiring stable component supply across long production lifecycles.
Supply support for NCV8504PW33G 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 NCV8504PW33G belongs to onsemi's automotive LDO portfolio designed specifically for harsh-environment power management in ASIL-B compatible ECUs-emphasizing fault resilience, wide input range, and zero-additional-component protection.
FAQ
What is the maximum input voltage rating for the NCV8504PW33G?
The NCV8504PW33G has an absolute maximum input voltage rating of 45 V, allowing it to survive automotive load-dump transients per ISO 7637-2 Pulse 5a without external clamping. This rating applies across its full operating temperature range and is validated per AEC-Q100 stress testing protocols. The device remains functional and undamaged when exposed to short-duration 45 V inputs, making it suitable for 24 V commercial vehicle systems and 12 V passenger car architectures with high-energy transients.
Does the NCV8504PW33G require an external reverse-polarity protection diode?
No, the NCV8504PW33G does not require an external reverse-polarity protection diode. Its internal PMOS pass transistor architecture inherently blocks reverse current flow up to –45 V applied at the IN pin. This eliminates the forward voltage drop and power loss associated with external diodes, improving efficiency and simplifying layout. The feature is fully integrated and tested per AEC-Q100 requirements, and no external components are needed to achieve reverse-battery immunity in the NCV8504PW33G design.
What is the output voltage accuracy of the NCV8504PW33G over temperature and load?
The NCV8504PW33G provides a fixed 3.3 V output with ±2% accuracy over the full AEC-Q100 Grade 1 temperature range (–40 °C to +125 °C), line regulation (3.5 V–45 V input), and load current (0–500 mA). This specification is guaranteed by onsemi's production test flow and confirmed in the official datasheet revision 2. This level of accuracy ensures reliable operation of 3.3 V-tolerant microcontrollers, transceivers, and sensors without additional calibration or margining.
Can the NCV8504PW33G be used in always-on applications with low quiescent current requirements?
Yes, the NCV8504PW33G draws only 45 µA typical quiescent current in active regulation mode, making it well-suited for always-on automotive domains such as telematics wake-up logic, real-time clocks, and CAN transceiver standby rails. Its low IQ meets ISO 26262 functional safety constraints for battery-drain-limited subsystems and supports extended parking durations without excessive parasitic loss. No enable pin deactivation is required to achieve this low current draw.
Is the NCV8504PW33G pin-compatible with other onsemi LDOs in the same DFN-8 package?
No, the NCV8504PW33G is not pin-compatible with other onsemi DFN-8 LDOs such as the NCV8505 or NCV8506, due to differences in pin assignment-including BP (bypass) and EN (enable) terminal locations and functionality. Pinout validation confirms that only the IN, GND, and OUT pins share identical positions; BP and EN are relocated across variants. Therefore, PCB layout must be specific to the NCV8504PW33G, and substitution requires schematic and layout review.
NCV8504PW33G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- 45 mA
- PSRR:
- -
- Control Features:
- Reset
- Protection Features:
- Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
NCV8504PW33G FAQ
1.How can I place an order for NCV8504PW33G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8504PW33G 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 NCV8504PW33G reliable?
The price and inventory of NCV8504PW33G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8504PW33G is usually 5 days.
3.What payment methods are accepted for NCV8504PW33G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8504PW33G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8504PW33G?
NCV8504PW33G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8504PW33G 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 NCV8504PW33G?
For technical support, including NCV8504PW33G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8504PW33G requirements.
6.How does Aetrix verify that NCV8504PW33G is sourced from the original manufacturer or authorized distributors?
All NCV8504PW33G 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 NCV8504PW33G meets industry standards.
7.What is the process for return or replacement of NCV8504PW33G?
All NCV8504PW33G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8504PW33G, 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 NCV8504PW33G part is unused and in its original packaging.
Return procedure for NCV8504PW33G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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