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onsemi NCV8502PDWADJR2G
- Part No.:
- NCV8502PDWADJR2G
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
NCV8502PDWADJR2G.pdf
- Description:
- IC REG LIN POS ADJ 150MA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,388
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Product details
Overview
NCV8502PDWADJR2G from onsemi is an automotive-grade adjustable-output LDO linear regulator delivering 150 mA with ±2.0% output accuracy, 0.6 V max dropout at full load, and integrated active RESET (with programmable delay), FLAG early-warning monitor, and fault protection including +60 V transient tolerance and −15 V reverse-battery immunity. It serves as a primary power supply and system supervisor in engine control units and body electronics.
For engineers reviewing the NCV8502PDWADJR2G datasheet, pinout, applications, or equivalent options, key selection criteria include its adjustable output voltage range (1.25–10 V), low 50 µA quiescent current at light load, operation down to 1.0 V output for valid RESET assertion, and SOW-16 exposed-pad package optimized for thermal performance in automotive under-hood environments.
Technical Context
The NCV8502PDWADJR2G implements a bandgap-referenced error amplifier with unity-gain feedback via the VADJ pin, enabling precise output adjustment using an external resistor divider. Its RESET circuit operates independently of regulation status and remains functional down to VOUT = 1.0 V, ensuring reliable microprocessor reset signaling even during brownout conditions.
It integrates three supervisory functions: a DELAY capacitor-programmable reset timer, a FLAG open-collector comparator with 1.20 V typical MON threshold and 20–100 mV hysteresis, and a reset-adjust input (RADJ) allowing threshold reduction below default levels. All functions are AEC-Q100 qualified and designed for EMC robustness in 12 V/24 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 150 mA maximum continuous - supports mid-power MCU cores and peripheral ICs without external pass devices. |
| Output Accuracy | ±2.0% over temperature and load - ensures stable logic supply within processor VDD tolerance bands. |
| Dropout Voltage | 600 mV max at 150 mA - enables operation with VIN as low as VOUT + 0.6 V, critical for cold-crank scenarios. |
| Quiescent Current | 50 µA typical at 100 µA load - extends battery life in always-on vehicle modules like door controllers. |
| RESET Threshold | Programmable via RADJ; default 97–98% of VOUT - provides precise undervoltage detection aligned with system-level reset requirements. |
| FLAG Threshold | 1.20 V typical on MON pin with 20–100 mV hysteresis - delivers deterministic early warning before RESET activation. |
| Transient Tolerance | +60 V peak (load dump), −15 V reverse battery - meets ISO 7637-2 Pulse 5a/b and reverse-polarity test requirements. |
Pinout & Package
SOW-16 wide-body SOIC with exposed thermal pad (Case 751AG), optimized for high-power dissipation in automotive under-hood applications. Junction-to-case thermal resistance is 15 °C/W, enabling >1 W continuous power handling with proper PCB copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input voltage supply | Accepts 4.5–45 V DC; withstands +60 V transients and −15 V reverse polarity. |
| MON | Monitor input | Connects to resistor divider for programmable FLAG trip point; default ties to VOUT for fixed 1.20 V reference. |
| RADJ | Reset adjust input | External resistor divider lowers RESET threshold below default 97–98% of VOUT; grounded for nominal setting. |
| DELAY | Reset timing capacitor node | Sinks/supplies charge current (2.5 µA typ.) to set RESET delay time; discharges fully after reset violation. |
| GND | Ground reference | All GND pins must be connected to common ground plane; exposed pad is electrically tied to GND for thermal conduction. |
| RESET | Active-low reset output | Open-collector NPN; asserts low when VOUT drops below threshold; valid down to VOUT = 1.0 V. |
| FLAG | Early-warning output | Open-collector NPN; pulls low when MON voltage falls below threshold, giving MCU time to save state before RESET. |
| VOUT | Regulated output | Adjustable 1.25–10 V via VADJ feedback; ±2.0% accuracy ensures compliance with MCU I/O voltage specs. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Output Voltage | 1.25 V to 10 V via external resistor divider on VADJ - eliminates need for multiple fixed-voltage SKUs in multi-rail designs. |
| Programmable RESET Delay | Capacitor-controlled timing (e.g., 23.8 ms with 33 nF) - allows configurable reset hold-off to meet processor boot timing requirements. |
| Early Warning FLAG | 1.20 V MON threshold with 20–100 mV hysteresis - provides deterministic pre-reset signal enabling graceful MCU shutdown and data preservation. |
| AEC-Q100 Qualified | Grade 1 (−40°C to +125°C junction) - certified for engine compartment and transmission control module deployment. |
| Robust Fault Protection | +60 V transient, −15 V reverse battery, short-circuit, and thermal shutdown - reduces need for external protection components in cost-sensitive modules. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 32-bit MCU core and CAN transceiver in gasoline/diesel ECU under wide ambient and supply voltage ranges. IC Role / Device Role / Timing Role: Primary 5 V or 3.3 V LDO with integrated RESET supervision and early-warning FLAG for safe firmware execution during cranking and load-dump events. Use Value: Enables reliable cold-start operation with VIN as low as 6 V and maintains valid RESET assertion down to VOUT = 1.0 V, preventing spurious resets. | Use Scenario: Supplies power and reset management to microcontroller in door module controlling windows, locks, and mirrors. IC Role / Device Role / Timing Role: Adjustable-output LDO (e.g., 3.3 V) with programmable RESET delay and FLAG warning to coordinate actuator sequencing during power-up/down. Use Value: Low 50 µA quiescent current minimizes parasitic drain in sleep mode; exposed pad ensures thermal stability during repeated window motor activation. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Transmission Control Module (TCM) |
Use Scenario: Provides clean, supervised 1.8 V or 2.5 V rail to image sensor and ISP in rear-view camera module. IC Role / Device Role / Timing Role: Precision LDO with ±2.0% output accuracy and FLAG-based early warning to prevent image corruption during voltage sags. Use Value: Bandgap-stabilized reference ensures consistent sensor biasing across −40°C to +105°C; MON pin allows custom threshold tuning for sensor-specific UVLO. | Use Scenario: Powers microcontroller and solenoid drivers in automatic transmission controller exposed to high under-hood temperatures. IC Role / Device Role / Timing Role: High-thermal-performance LDO (SOW-16 exposed pad) with 150 mA output and +125°C junction rating for sustained operation near exhaust manifold. Use Value: 15 °C/W RJC enables >1 W dissipation with standard 2 oz. copper; AEC-Q100 Grade 1 qualification guarantees reliability at 150°C TJ. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator with reset and monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8501PDWADJR2G | 50 mA output current, identical pinout and feature set - lower current capability only. | Suitable for ultra-low-power modules (e.g., smart sensors) where 150 mA headroom is unnecessary. | Select when total system load < 40 mA and board space/thermal budget is constrained. |
| TLV70733PDQNR | 3.3 V fixed output, 300 mA rating, no RESET/FLAG features, smaller 6-pin WSON package. | Applicable where only basic LDO functionality is needed and supervisory signals are handled externally. | Choose for non-automotive, cost-sensitive consumer applications lacking reset/monitor requirements. |
Compared with NCV8502PDWADJR2G, the NCV8501PDWADJR2G offers identical supervision features at reduced current capacity, while the TLV70733PDQNR trades integrated monitoring for higher output current and smaller footprint - neither provides drop-in replacement due to differing current ratings, supervision integration, or automotive qualification.
Availability
NCV8502PDWADJR2G is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera ECUs requiring stable component supply with automotive-grade reliability and long-term lifecycle support.
Supply support for NCV8502PDWADJR2G 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, and cloud power applications.
The NCV8502 series belongs to onsemi's automotive power management portfolio, designed specifically for robust, integrated voltage regulation and system supervision in harsh-temperature, high-transient automotive environments.
FAQ
What is the minimum input voltage required for NCV8502PDWADJR2G to regulate a 3.3 V output?
The NCV8502PDWADJR2G requires VIN ≥ VOUT + dropout voltage. With a max dropout of 600 mV at 150 mA, it regulates 3.3 V output down to VIN = 3.9 V. At light loads, dropout drops to 150 mV, enabling regulation from 3.45 V. This supports cold-crank operation in 12 V systems where battery voltage dips to ~6 V.
How is the output voltage adjusted on the NCV8502PDWADJR2G?
The NCV8502PDWADJR2G uses a resistor divider from VOUT to the VADJ pin to set output voltage. The internal reference is 1.28 V (typical), so VOUT = 1.28 × (1 + R1/R2). For example, R1 = 15 kΩ and R2 = 5.1 kΩ yields ≈5.0 V. The VADJ pin draws ≤0.5 µA, minimizing divider current error.
Can the NCV8502PDWADJR2G be used in non-automotive applications?
Yes, the NCV8502PDWADJR2G is fully functional in industrial and medical applications requiring high reliability, wide temperature range (−40°C to +125°C), and robust fault protection. Its AEC-Q100 qualification adds margin but is not a barrier to use outside automotive - many customers deploy it in railway, energy, and avionics systems.
What is the purpose of the MON pin on the NCV8502PDWADJR2G?
The MON pin on the NCV8502PDWADJR2G is the input to the FLAG early-warning comparator. When voltage at MON falls below 1.20 V (typical), FLAG pulls low to alert the microcontroller of impending RESET. It can be tied directly to VOUT for fixed threshold or biased via resistor divider to customize the warning point relative to system needs.
Does the NCV8502PDWADJR2G require an external capacitor on the DELAY pin?
Yes, the DELAY pin requires an external capacitor to set the RESET delay time. The device sources ~2.5 µA into the capacitor during power-up or recovery; delay time is calculated as tDELAY = CDELAY × (VDT − VDL) / ICHARGE. For example, a 33 nF capacitor yields ~23.8 ms delay using typical values (VDT = 1.8 V, VDL = 0 V, ICHARGE = 2.5 µA).
NCV8502PDWADJR2G 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):
- 1.28V
- Voltage - Output (Max):
- 44.4V
- Voltage Dropout (Max):
- 0.6V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 75 µA
- Current - Supply (Max):
- 19 mA
- PSRR:
- -
- Control Features:
- Enable
- 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
NCV8502PDWADJR2G FAQ
1.How can I place an order for NCV8502PDWADJR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8502PDWADJR2G 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 NCV8502PDWADJR2G reliable?
The price and inventory of NCV8502PDWADJR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8502PDWADJR2G is usually 5 days.
3.What payment methods are accepted for NCV8502PDWADJR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8502PDWADJR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8502PDWADJR2G?
NCV8502PDWADJR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8502PDWADJR2G 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 NCV8502PDWADJR2G?
For technical support, including NCV8502PDWADJR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8502PDWADJR2G requirements.
6.How does Aetrix verify that NCV8502PDWADJR2G is sourced from the original manufacturer or authorized distributors?
All NCV8502PDWADJR2G 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 NCV8502PDWADJR2G meets industry standards.
7.What is the process for return or replacement of NCV8502PDWADJR2G?
All NCV8502PDWADJR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8502PDWADJR2G, 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 NCV8502PDWADJR2G part is unused and in its original packaging.
Return procedure for NCV8502PDWADJR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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