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onsemi NCV8501PDWADJG
- Part No.:
- NCV8501PDWADJG
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
NCV8501PDWADJG.pdf
- Description:
- IC REG LIN POS ADJ 150MA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,624
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Product details
Overview
NCV8501PDWADJG from onsemi is an automotive-grade adjustable-output LDO linear regulator with 150 mA output, ±2.0% output accuracy, 0.6 V dropout at full load, and integrated ENABLE, RESET (with programmable DELAY), and FLAG monitor functions. It operates from −15 V to +45 V input, withstands +60 V load dump transients, and supports battery-powered microprocessor systems requiring early-warning reset signaling.
For engineers reviewing the NCV8501PDWADJG datasheet, pinout, applications, or equivalent options, this page delivers verified specifications, SOIC-16 exposed-pad package details, functional pin roles, automotive EMC-optimized design context, and validated alternative options for precision micropower regulation with fault monitoring.
Technical Context
The NCV8501PDWADJG implements a bandgap-referenced error amplifier driving a PNP pass transistor, with independent comparator-based FLAG and RESET circuits referenced to internal 1.28 V bandgap. Its ENABLE function features overvoltage-tolerant input structure supporting direct battery connection with external series resistor.
RESET activation occurs when VOUT drops below 97–98% of nominal output (e.g., 4.85 V for 5 V mode) or during power-up until regulation is established; FLAG asserts when MON pin voltage falls below 1.10–1.31 V, providing programmable early warning via external resistor divider. DELAY timing is set by external capacitor charged at 1.5–3.5 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 150 mA maximum - supports microprocessor core rails and peripheral logic without external pass devices. |
| Output Accuracy | ±2.0% over temperature and load - ensures reliable system boot and brownout detection thresholds. |
| Dropout Voltage | 600 mV max at 150 mA - enables operation with ≤0.6 V headroom, critical for low-voltage battery systems. |
| Quiescent Current | 90 µA typical at 100 µA load - extends battery life in always-on automotive modules (e.g., CAN nodes, sensors). |
| RESET Threshold | 0.97×VOUT low-to-high hysteresis - prevents oscillation during marginal supply conditions. |
| FLAG Threshold | 1.20 V typical on MON pin - allows precise early-warning margin setting before RESET assertion. |
| Input Voltage Range | −15 V to +45 V DC - accommodates reverse-battery protection and 42 V load-dump transients per ISO 7637-2. |
Pinout & Package
SOW-16 Exposed Pad (Case 751AG), thermally enhanced SOIC-wide-body package with exposed thermal pad for improved heat dissipation in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply rail; rated −15 V to +45 V, withstands +60 V transient spikes. |
| 2 | MON | Early-warning comparator input; threshold 1.10–1.31 V - connect to resistor divider from VOUT for programmable FLAG trigger point. |
| 3 | ENABLE | Active-high enable control; internal pull-down; tolerates >10 V with external current-limiting resistor. |
| 4–6, 10–12, 14–15 | NC | No internal connection - must remain unconnected per datasheet. |
| 7 | GND | Power ground; all GND pins must be tied to system ground plane for thermal and noise integrity. |
| 8 | DELAY | Reset delay timing capacitor node; supplies 1.5–3.5 µA charge current to external CDELAY. |
| 9 | RESET | Open-collector active-low reset output; valid down to VOUT = 1.0 V - drives microprocessor /RESET directly. |
| 10 | FLAG | Open-collector early-warning output; asserts low when MON voltage falls below threshold - signals impending RESET. |
| 11 | VOUT | Regulated output; ±2.0% accuracy; 150 mA capable; requires ≥10 µF output capacitor for stability. |
| 12 | VADJ | Adjustable feedback node; connects to resistor divider from VOUT to set output voltage (VOUT = 1.28 V × (1 + R1/R2)). |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | NCV prefix indicates AEC-Q100 stress-tested, change-controlled, and site-qualified for automotive applications. |
| Integrated FLAG monitor | Provides programmable early-warning signal (via MON pin) to allow microprocessor task completion before RESET shutdown. |
| Load-dump robustness | Withstands +60 V transient pulses per ISO 7637-2 - eliminates need for external TVS in many 12 V/24 V vehicle systems. |
| Low-IQ sleep mode | 12–30 µA quiescent current when ENABLE = 0 V - enables ultra-low-power standby in always-on ECUs. |
| Reverse-battery protection | Operates safely with −15 V applied to VIN - prevents damage during jump-start or battery reversal events. |
Applications
| Engine Control Unit (ECU) Power Management | Advanced Driver Assistance Systems (ADAS) Sensor Bias |
|---|---|
|
Use Scenario: Powers microcontroller, CAN transceiver, and analog front-end in engine control module operating across −40 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Primary 3.3 V or 5.0 V LDO with RESET/FLAG sequencing for safe boot and fault recovery. Use Value: ±2.0% output accuracy ensures reliable ADC reference and logic-level compatibility; FLAG provides 23.8 ms warning (with 33 nF DELAY cap) before RESET. |
Use Scenario: Supplies image sensor bias and radar processor I/O rails in camera or radar ECU exposed to load dump and thermal cycling. IC Role / Device Role / Timing Role: Adjustable-output LDO delivering stable 1.8 V or 2.5 V with integrated early-warning monitoring. Use Value: +60 V peak transient rating eliminates external TVS; exposed pad reduces RJA to 56 °C/W for high-temperature reliability. |
| Body Control Module (BCM) Microprocessor Core | Telematics Control Unit (TCU) Always-On Rail |
|
Use Scenario: Regulates 5.0 V rail for BCM MCU and LIN transceivers in door modules and lighting controllers. IC Role / Device Role / Timing Role: Micropower LDO with ENABLE control enabling deep-sleep wake-up via ignition signal. Use Value: 90 µA quiescent current at light load minimizes parasitic drain; RESET ensures deterministic restart after battery disconnect. |
Use Scenario: Provides always-on 3.3 V supply for GPS/GNSS receiver and cellular modem in TCU during vehicle sleep mode. IC Role / Device Role / Timing Role: Low-noise, low-IQ LDO with FLAG-triggered graceful shutdown before main battery depletion. Use Value: FLAG assertion at 1.20 V MON threshold gives MCU time to save state and initiate controlled power-down sequence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8501DADJR2G | SO-8 package (RJA = 165 °C/W), no exposed pad, same electrical specs. | Limited thermal performance; suitable only for lower-power, lower-ambient applications. | Select when board space constraints prohibit SOW-16 or thermal load is <500 mW. |
| TLV73312PDBVR | Fixed 1.2 V output, 300 mA rating, 25 µA IQ, no RESET/FLAG/DELAY functions. | Lacks integrated monitoring and reset logic; requires external supervisor IC for safety-critical systems. | Select for non-automotive, cost-sensitive designs where supervision is handled separately. |
Compared with NCV8501DADJR2G, the NCV8501PDWADJG offers superior thermal performance (RJA = 56 °C/W vs. 165 °C/W) and higher transient immunity due to exposed pad construction; compared with TLV73312PDBVR, it integrates automotive-grade supervision features but trades off output flexibility and quiescent current.
Availability
NCV8501PDWADJG is available at Aetrix Electronics and suitable for automotive engine control units, ADAS sensor modules, and telematics control units requiring stable component supply with long-term lifecycle assurance and AEC-Q100 compliance.
Supply support for NCV8501PDWADJG 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 infrastructure markets.
The NCV8501PDWADJG belongs to the NCV8501 series of automotive-qualified LDO regulators designed specifically for microprocessor power management in harsh environments requiring high transient immunity, precise reset monitoring, and extended temperature operation.
FAQ
What is the maximum input voltage rating for NCV8501PDWADJG?
The NCV8501PDWADJG supports a continuous DC input voltage range of −15 V to +45 V and can withstand transient peaks up to +60 V per ISO 7637-2 load-dump testing. This makes NCV8501PDWADJG suitable for 12 V and 24 V automotive systems where battery reversal and alternator transients occur.
How does the FLAG function work in NCV8501PDWADJG?
The FLAG function in NCV8501PDWADJG is an open-collector output that goes low when the voltage on the MON pin falls below 1.10–1.31 V. By connecting MON to a resistor divider from VOUT, designers set a programmable early-warning threshold. This gives the microprocessor time to complete tasks before the subsequent RESET signal shuts it down - a key feature of NCV8501PDWADJG for fail-safe operation.
Can NCV8501PDWADJG be used with fixed output voltages like 3.3 V or 5.0 V?
No - NCV8501PDWADJG is the adjustable-output variant (denoted by "ADJ" in the part number) and requires an external resistor divider between VOUT and VADJ to set the output voltage. For fixed 3.3 V or 5.0 V outputs, use NCV8501PDW33G or NCV8501PDW50G respectively. The NCV8501PDWADJG itself does not have factory-trimmed fixed outputs.
What is the purpose of the DELAY pin on NCV8501PDWADJG?
The DELAY pin on NCV8501PDWADJG sources 1.5–3.5 µA to charge an external capacitor, creating a programmable delay before RESET deasserts after power-up or recovery from undervoltage. With a 33 nF capacitor, NCV8501PDWADJG achieves ~23.8 ms delay - ensuring stable VOUT before releasing the microprocessor from reset.
Is NCV8501PDWADJG pin-compatible with other packages in the NCV8501 family?
No - NCV8501PDWADJG uses the SOW-16 exposed pad package (Case 751AG) with 16 pins and distinct pinout, while SO-8 variants (e.g., NCV8501DADJG) have only 8 pins and different terminal assignments. Pin mapping differs significantly: DELAY and RESET are separate pins in SOW-16 but combined or absent in SO-8. PCB layout must be redesigned for NCV8501PDWADJG.
NCV8501PDWADJG 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:
- 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
NCV8501PDWADJG FAQ
1.How can I place an order for NCV8501PDWADJG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8501PDWADJG 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 NCV8501PDWADJG reliable?
The price and inventory of NCV8501PDWADJG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8501PDWADJG is usually 5 days.
3.What payment methods are accepted for NCV8501PDWADJG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8501PDWADJG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8501PDWADJG?
NCV8501PDWADJG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8501PDWADJG 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 NCV8501PDWADJG?
For technical support, including NCV8501PDWADJG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8501PDWADJG requirements.
6.How does Aetrix verify that NCV8501PDWADJG is sourced from the original manufacturer or authorized distributors?
All NCV8501PDWADJG 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 NCV8501PDWADJG meets industry standards.
7.What is the process for return or replacement of NCV8501PDWADJG?
All NCV8501PDWADJG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8501PDWADJG, 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 NCV8501PDWADJG part is unused and in its original packaging.
Return procedure for NCV8501PDWADJG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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