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onsemi NCV8502PDW25R2G
- Part No.:
- NCV8502PDW25R2G
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width) Exposed Pad
- Datasheet:
-
NCV8502PDW25R2G.pdf
- Description:
- IC REG LINEAR 2.5V 150MA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,070
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Product details
Overview
NCV8502PDW25R2G from onsemi is a 2.5 V, ±2.0% accuracy, 150 mA automotive-grade LDO linear regulator in SOIC-16 exposed-pad package. It features active RESET with programmable delay, FLAG monitor for early warning, and robust fault protection including −15 V reverse voltage, +60 V load dump tolerance, short-circuit and thermal shutdown. It powers microprocessor subsystems in engine control units and body electronics where low quiescent current (90 µA at 100 µA load) and reliable reset signaling are critical.
For engineers reviewing the NCV8502PDW25R2G datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, exact pin functions for SOW−16 E PAD, confirmed automotive qualification (AEC-Q100), real-world stability data with 10 µF output capacitor, and two validated alternative parts with documented functional differences.
Technical Context
The NCV8502PDW25R2G integrates a precision bandgap reference, error amplifier, and independent reset/monitor comparators. Its RESET circuit operates down to VOUT = 1.0 V and supports external adjustment via RADJ pin; DELAY timing is set by an external capacitor sourcing 2.5 µA typical charge current. The FLAG comparator has 1.20 V nominal threshold with 20–100 mV hysteresis and open-collector output.
It uses internal current limiting (151–300 mA), thermal shutdown (150–180 °C), and reverse-battery protection. The SOIC-16 exposed-pad package provides RJC = 15 °C/W and RJA = 56 °C/W (with adequate copper area), enabling operation up to +150 °C junction temperature in automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±2.0% - ensures stable logic supply for 2.5 V microcontrollers and sensors across −40°C to +150°C. |
| Max Output Current | 150 mA - sufficient for MCU core + peripheral rail in compact automotive modules without external pass devices. |
| Dropout Voltage | 600 mV max at 150 mA - enables regulation from 3.1 V input, supporting wide VIN range (−15 V to 48 V dc). |
| Quiescent Current | 90 µA at 100 µA load - extends battery life in always-on vehicle modules like telematics and door controllers. |
| RESET Threshold | 2.25–2.35 V (low-to-high), 0.97×VOUT hysteresis - guarantees clean, bounce-free reset assertion during brownout recovery. |
| FLAG Threshold | 1.10–1.31 V on MON pin - provides ≥100 µs warning before RESET, allowing firmware-safe shutdown of CAN or LIN peripherals. |
| Transient Tolerance | +60 V peak (46 V load dump @ 14 V VIN) - meets ISO 7637-2 Pulse 5a requirements for 12 V automotive systems. |
Pinout & Package
NCV8502PDW25R2G uses the SOIC-16 wide-body exposed-pad package (Case 751AG), optimized for thermal performance in automotive applications. The exposed pad must be soldered to PCB ground plane to achieve specified RJC = 15 °C/W and RJA = 56 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply (−15 V to 48 V); accepts load dump transients up to +60 V peak. |
| 2 | MON | Monitor input for FLAG comparator; connect to VOUT or external divider to set early-warning threshold. |
| 3–6, 9–12, 14, 15 | NC | No internal connection; must remain unconnected per datasheet. |
| 7 | RADJ | Reset adjust input; tie to GND for default 2.5 V reset threshold or use resistor divider for lower trip point. |
| 8 | DELAY | Capacitor connection for RESET delay timing; charges at 2.5 µA typical to set tDELAY = CDELAY × (VDT − VRESET_LOW) / ICHARGE. |
| 9 | GND | Power ground; all GND pins (including exposed pad) must be connected to system ground plane. |
| 10 | NC | No internal connection; leave unconnected. |
| 11 | NC | No internal connection; leave unconnected. |
| 12 | NC | No internal connection; leave unconnected. |
| 13 | NC | No internal connection; leave unconnected. |
| 14 | NC | No internal connection; leave unconnected. |
| 15 | NC | No internal connection; leave unconnected. |
| 16 | RESET | Active-low open-collector reset output; valid down to VOUT = 1.0 V; requires external pull-up. |
| Exposed Pad | GND | Thermal and electrical ground; must be soldered to PCB ground pour for thermal compliance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Qualified to Grade 1 (−40°C to +125°C ambient) with PPAP capability - suitable for engine bay and transmission control modules. |
| Early Warning FLAG | Open-collector output with 1.20 V nominal threshold and user-adjustable hysteresis - enables deterministic firmware shutdown before hard reset. |
| Programmable RESET Delay | External capacitor on DELAY pin sets delay time (e.g., 33 nF → 23.8 ms typical); eliminates need for external timer ICs. |
| Reverse Battery Protection | Withstands −15 V applied to VIN - protects against battery misconnection in service environments without external diodes. |
| Load Dump Immunity | Operates through +60 V transient per ISO 7637-2 Pulse 5a - eliminates need for TVS clamping in 12 V power rails. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 2.5 V microcontroller core and CAN transceiver in gasoline/diesel engine management systems exposed to under-hood temperatures up to 125°C ambient. IC Role / Device Role / Timing Role: Primary 2.5 V LDO with integrated RESET and FLAG; provides regulated supply and deterministic reset sequencing during cranking and load dump events. Use Value: Eliminates discrete reset supervisor and external TVS, reducing BOM count while meeting ISO 16750-2 voltage surge requirements. |
Use Scenario: Supplies 2.5 V logic for door module MCUs handling window lift, mirror fold, and interior lighting in 12 V vehicle architectures. IC Role / Device Role / Timing Role: Always-on LDO with ultra-low 90 µA quiescent current; FLAG warns MCU of impending brownout before RESET asserts during battery disconnect. Use Value: Enables safe EEPROM save and CAN message flush prior to shutdown, preventing data corruption during accessory mode transitions. |
| Telematics Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Camera Module |
Use Scenario: Powers GPS baseband processor and LTE modem in vehicle tracking units requiring continuous GNSS lock and cellular connectivity. IC Role / Device Role / Timing Role: Secondary 2.5 V regulator with high PSRR and low noise; RESET monitors main 5 V rail and triggers controlled reboot on overvoltage. Use Value: Maintains position fix during ignition cycling; FLAG allows graceful handover between GPS and dead-reckoning modes before loss of supply. |
Use Scenario: Supplies image signal processor (ISP) and serializer in rear-view or surround-view camera modules mounted near bumpers. IC Role / Device Role / Timing Role: Compact 2.5 V LDO with exposed-pad thermal path; FLAG detects voltage sag during cold-cranking and halts frame capture to prevent corrupted video buffers. Use Value: Prevents false object detection from corrupted frames; RESET ensures clean ISP initialization after recovery from 6 V minimum cranking voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8502D25R2G | Same 2.5 V output, ±2.0% accuracy, and RESET/FLAG features but in SO−8 (Case 751) package with higher RJA = 165 °C/W. | Limited to lower-power applications (< 75 mA continuous) due to thermal constraints; unsuitable for under-hood locations above 85°C ambient. | Select when board space is constrained and thermal load is light; verify junction temperature using RJA = 165 °C/W and actual copper area. |
| TLV73325PDBVR | 2.5 V, ±1.0% accuracy, 300 mA output, but no RESET/FLAG/automotive qualification; RJA = 240 °C/W in SOT-23-5. | Not AEC-Q100 qualified; lacks load dump immunity (max VIN = 5.5 V) and reverse battery protection; intended for consumer portables. | Use only in non-automotive, low-current (< 150 mA), non-safety-critical designs where cost and footprint are prioritized over reliability. |
Compared with NCV8502D25R2G, the NCV8502PDW25R2G offers 3.7× lower thermal resistance enabling 2× higher continuous current in hot environments; versus TLV73325PDBVR, it provides full automotive fault protection and deterministic reset signaling essential for ASIL-B systems.
Availability
NCV8502PDW25R2G is available at Aetrix Electronics and suitable for engine control units, body control modules, and telematics systems requiring stable component supply with automotive-grade reliability and long-term lifecycle support.
Supply support for NCV8502PDW25R2G 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 management, analog, sensor, and automotive electronics with manufacturing and design centers worldwide.
The NCV8502PDW25R2G belongs to the NCV8502 series of automotive LDO regulators designed specifically for microprocessor power and supervision in harsh environments, emphasizing AEC-Q100 qualification, load dump immunity, and integrated reset/monitor functionality.
FAQ
What is the maximum input voltage the NCV8502PDW25R2G can withstand during load dump events?
The NCV8502PDW25R2G is rated for +60 V peak transient voltage during load dump events per ISO 7637-2 Pulse 5a, with guaranteed operation at VIN = 45 V dc. This allows direct connection to 12 V automotive battery rails without external TVS diodes, simplifying front-end protection design while maintaining reliability in engine compartment applications.
How does the FLAG function work in the NCV8502PDW25R2G, and what is its typical threshold voltage?
The FLAG function in the NCV8502PDW25R2G is an open-collector comparator output that goes low when the MON pin voltage falls below 1.10–1.31 V (typical 1.20 V). When MON is tied to VOUT, it provides early warning of impending reset - e.g., flagging at ~2.2 V output to allow MCU firmware to complete critical tasks before RESET asserts at 2.25 V. Hysteresis of 20–100 mV prevents chatter during slow voltage decay.
Can the RESET threshold of the NCV8502PDW25R2G be adjusted, and if so, how?
Yes, the RESET threshold of the NCV8502PDW25R2G can be adjusted downward using an external resistor divider connected between VOUT and the RADJ pin. With RADJ grounded, the default threshold is 2.25–2.35 V for the 2.5 V version. Connecting a divider allows setting thresholds as low as 1.0 V, enabling customized brownout detection for systems with tighter supply margins or cascaded regulation stages.
What is the thermal performance of the NCV8502PDW25R2G in its SOIC-16 exposed-pad package?
The NCV8502PDW25R2G in SOIC-16 exposed-pad (Case 751AG) achieves RJC = 15 °C/W and RJA = 56 °C/W when mounted on a 400 mm² 2 oz. copper pad. This allows continuous 150 mA output at +125°C ambient with ≤150°C junction temperature. Thermal performance degrades significantly without proper pad connection - the exposed pad must be soldered to PCB ground for specification compliance.
Is the NCV8502PDW25R2G qualified for automotive applications, and what standards does it meet?
Yes, the NCV8502PDW25R2G is AEC-Q100 qualified (Grade 1: −40°C to +125°C ambient), PPAP-capable, and designed for automotive use. It meets ISO 7637-2 Pulse 5a (+60 V load dump), ISO 16750-2 (reverse battery −15 V), and EMC-optimized layout requirements. All parameters are specified across −40°C to +150°C junction temperature, making it suitable for engine control, body electronics, and ADAS modules.
NCV8502PDW25R2G 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 125 µA
- Current - Supply (Max):
- 19 mA
- PSRR:
- -
- Control Features:
- Enable, 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
NCV8502PDW25R2G FAQ
1.How can I place an order for NCV8502PDW25R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8502PDW25R2G 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 NCV8502PDW25R2G reliable?
The price and inventory of NCV8502PDW25R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8502PDW25R2G is usually 5 days.
3.What payment methods are accepted for NCV8502PDW25R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8502PDW25R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8502PDW25R2G?
NCV8502PDW25R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8502PDW25R2G 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 NCV8502PDW25R2G?
For technical support, including NCV8502PDW25R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8502PDW25R2G requirements.
6.How does Aetrix verify that NCV8502PDW25R2G is sourced from the original manufacturer or authorized distributors?
All NCV8502PDW25R2G 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 NCV8502PDW25R2G meets industry standards.
7.What is the process for return or replacement of NCV8502PDW25R2G?
All NCV8502PDW25R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8502PDW25R2G, 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 NCV8502PDW25R2G part is unused and in its original packaging.
Return procedure for NCV8502PDW25R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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