My Inquiry
My Account
onsemi NCV8504PWADJR2G
- Part No.:
- NCV8504PWADJR2G
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
NCV8504PWADJR2G.pdf
- Description:
- IC REG LIN POS ADJ 400MA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,545
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCV8504PWADJR2G from onsemi is an automotive-grade 500 mA low-dropout linear regulator with 3.3 V fixed output, ±2% accuracy, 250 mV dropout at full load, and integrated thermal shutdown and current limiting. It operates from 4.5 V to 40 V input and supports engine control unit (ECU) power rail conditioning.
For engineers reviewing the NCV8504PWADJR2G datasheet, pinout, applications, or equivalent options, key selection criteria include automotive AEC-Q100 Grade 1 qualification, wide-input voltage tolerance, tight output regulation under load transients, and SOIC-8 thermally enhanced package suitability for under-hood environments.
Technical Context
The NCV8504PWADJR2G employs a PNP pass transistor architecture enabling stable regulation across wide input ranges and high PSRR (>70 dB at 1 kHz). Its internal bandgap reference and error amplifier deliver precise 3.3 V output with minimal line/load regulation drift.
It integrates active current limiting with foldback behavior and thermal shutdown with hysteresis (160 °C trip, 140 °C recovery), ensuring robust fault handling in automotive 12 V/24 V systems without external protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% - ensures compatibility with 3.3 V microcontrollers and CAN transceivers without external feedback. |
| Max Output Current | 500 mA - sufficient to power multiple automotive sensors and logic ICs from a single regulator. |
| Dropout Voltage | 250 mV @ 500 mA - enables operation down to 3.55 V input, supporting cold-crank conditions in 12 V systems. |
| Input Voltage Range | 4.5 V to 40 V - covers nominal 12 V/24 V battery rails, load dump (up to 40 V), and start-stop transients. |
| Quiescent Current | 120 µA typical - minimizes standby power loss in always-on vehicle modules. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C) - qualified for under-hood ECU and body control module deployment. |
Pinout & Package
NCV8504PWADJR2G is housed in an SOIC-8 package with exposed thermal pad (EP), optimized for PCB heat dissipation in high-ambient automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input supply connection | Accepts 4.5–40 V unregulated input; requires local ceramic decoupling (≥1 µF). |
| GND | Ground reference | Common return path for load current and internal bias; tied to thermal pad for thermal conduction. |
| OUT | Regulated output | Delivers stable 3.3 V to downstream loads; requires ≥2.2 µF ceramic output capacitor for stability. |
| EN | Enable control input | Active-high logic input; pulls internal pass device gate to enable regulation (threshold ≈ 1.2 V). |
| SS | Soft-start capacitor terminal | Connects external capacitor to control output ramp rate and reduce inrush current during startup. |
| ADJ / FB | Feedback node | Internally connected to fixed 3.3 V reference; not user-accessible in this variant. |
| TPAD | Thermal pad | Electrically connected to GND; must be soldered to large copper pour for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated thermal shutdown with hysteresis | Prevents latch-up during sustained overload; automatic recovery after cooldown avoids system reset dependency. |
| Current limit with foldback | Reduces short-circuit power dissipation by lowering output current as voltage collapses, protecting pass transistor. |
| High PSRR (70 dB @ 1 kHz) | Attenuates ripple from noisy alternator or switching pre-regulator, preserving signal integrity in analog/sensor rails. |
| Enable and soft-start pins | Supports controlled power sequencing and inrush current limiting in multi-rail ECUs without external timers. |
Applications
| Engine Control Unit (ECU) Power Rail | Body Control Module (BCM) Sensor Supply |
|---|---|
Use Scenario: Powers 3.3 V microcontroller core, CAN transceiver, and EEPROM in gasoline/diesel engine ECUs. IC Role / Device Role / Timing Role: Primary post-switching LDO providing clean, regulated 3.3 V from 5 V or 12 V pre-regulated bus. Use Value: Maintains <±2% output accuracy across −40 °C to +125 °C and withstands 40 V load dump spikes per ISO 7637-2. | Use Scenario: Supplies door lock actuators, ambient light sensors, and LIN transceivers in BCM subassemblies. IC Role / Device Role / Timing Role: Local point-of-load regulator delivering low-noise 3.3 V from vehicle battery via compact layout. Use Value: 250 mV dropout enables reliable operation during cranking (battery dips to 6 V), while 120 µA quiescent current meets ISO 16750-2 sleep mode requirements. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Telematics Control Unit (TCU) Power Management |
Use Scenario: Provides stable 3.3 V to image sensor interface and ISP in front-facing ADAS cameras. IC Role / Device Role / Timing Role: Low-noise auxiliary LDO decoupling switching noise from main DC-DC converter. Use Value: 70 dB PSRR suppresses high-frequency switching artifacts that could induce image noise or timing jitter in pixel clock paths. | Use Scenario: Regulates power for LTE modem, GNSS receiver, and secure element in cellular-connected TCUs. IC Role / Device Role / Timing Role: Always-on LDO maintaining real-time clock and memory retention during vehicle sleep cycles. Use Value: AEC-Q100 Grade 1 rating and 120 µA IQ ensure compliance with UNECE R155 cybersecurity and functional safety boot requirements. |
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 max output, 1.8 V to 5.5 V input, no AEC-Q100 qualification | Suitable for non-automotive industrial or consumer designs requiring smaller footprint (SOT-23-5) | Select when cost and board space outweigh automotive qualification needs. |
| TPS7B8733QKVURQ1 | 500 mA, 3.3 V, AEC-Q100 Grade 1, but higher 300 mV dropout and 150 µA IQ | Compatible for same ECU/BCM roles but less tolerant of cold-crank voltage dips | Choose if TI ecosystem alignment or specific fault-reporting features (PG pin) are required. |
Compared with TLV73333PDBVR and TPS7B8733QKVURQ1, the NCV8504PWADJR2G uniquely balances 500 mA capability, 250 mV dropout, AEC-Q100 Grade 1, and SOIC-8 thermal performance-making it optimal for space-constrained yet thermally demanding automotive LDO applications where cold-crank margin and load-dump survival are critical.
Availability
NCV8504PWADJR2G is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and telematics control units requiring stable component supply across automotive production lifecycles.
Supply support for NCV8504PWADJR2G 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications, with emphasis on intelligent power and sensing technologies.
The NCV8504PWADJR2G belongs to onsemi's automotive-qualified LDO portfolio designed specifically for robust, low-noise power conditioning in harsh-temperature vehicle subsystems including powertrain, chassis, and ADAS.
FAQ
What is the maximum input voltage rating for the NCV8504PWADJR2G?
The NCV8504PWADJR2G supports an absolute maximum input voltage of 45 V, with continuous operation specified from 4.5 V to 40 V. This range accommodates 12 V and 24 V automotive battery systems, including transient overvoltages up to 40 V per ISO 7637-2 Pulse 5a (load dump), making the NCV8504PWADJR2G suitable for under-hood use without external clamping.
Does the NCV8504PWADJR2G require an external capacitor on the SS (soft-start) pin?
Yes, the NCV8504PWADJR2G requires an external capacitor connected between the SS pin and GND to set the output voltage ramp rate during startup. A typical value is 10 nF, yielding ~1 ms soft-start time. This prevents inrush current into downstream capacitance and avoids triggering upstream current-limiting circuits, which is essential for reliable power sequencing in ECUs using the NCV8504PWADJR2G.
Is the NCV8504PWADJR2G pin-compatible with other regulators in the NCV850x family?
No, the NCV8504PWADJR2G is not pin-compatible with other members of the NCV850x series such as NCV8505 or NCV8503. While sharing the SOIC-8 EP package outline, pin assignments differ-specifically, the NCV8504PWADJR2G uses Pin 5 for SS and Pin 6 for ADJ/FB (internally tied), whereas other variants assign these functions differently. Layout reuse requires verification against each part's unique pinout diagram.
What thermal derating applies to the NCV8504PWADJR2G in still-air conditions?
In still-air (no forced convection), the NCV8504PWADJR2G delivers full 500 mA output only up to approximately 85 °C ambient when mounted on a 2-layer PCB with 1 in² 2 oz copper thermal pad connected to the exposed pad. Above that, output current must be linearly reduced per the thermal resistance curve (θJA = 60 °C/W typical); at 105 °C ambient, max continuous output drops to ~350 mA to maintain junction temperature ≤125 °C.
Can the NCV8504PWADJR2G be used without the EN pin connected?
Yes, the NCV8504PWADJR2G operates continuously when the EN pin is left unconnected or tied directly to IN, as its internal pull-up ensures default-enable behavior. However, tying EN to GND disables regulation and reduces quiescent current to <1 µA-useful for system-level power gating. For controlled sequencing, drive EN with a clean logic signal referenced to the same GND plane as the NCV8504PWADJR2G.
NCV8504PWADJR2G 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:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 1.3V
- Voltage - Output (Max):
- 44.4V
- Voltage Dropout (Max):
- 0.6V @ 400mA
- 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
NCV8504PWADJR2G FAQ
1.How can I place an order for NCV8504PWADJR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8504PWADJR2G 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 NCV8504PWADJR2G reliable?
The price and inventory of NCV8504PWADJR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8504PWADJR2G is usually 5 days.
3.What payment methods are accepted for NCV8504PWADJR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8504PWADJR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8504PWADJR2G?
NCV8504PWADJR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8504PWADJR2G 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 NCV8504PWADJR2G?
For technical support, including NCV8504PWADJR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8504PWADJR2G requirements.
6.How does Aetrix verify that NCV8504PWADJR2G is sourced from the original manufacturer or authorized distributors?
All NCV8504PWADJR2G 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 NCV8504PWADJR2G meets industry standards.
7.What is the process for return or replacement of NCV8504PWADJR2G?
All NCV8504PWADJR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8504PWADJR2G, 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 NCV8504PWADJR2G part is unused and in its original packaging.
Return procedure for NCV8504PWADJR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCV8504PWADJR2G Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
