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onsemi NCV8502D50R2G
- Part No.:
- NCV8502D50R2G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
NCV8502D50R2G.pdf
- Description:
- IC REG LINEAR 5V 150MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
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Product details
Overview
NCV8502D50R2G from onsemi is a 5.0 V, ±2.0% accuracy, 150 mA automotive-grade LDO linear regulator in SO-8 package with integrated active RESET (with programmable delay), FLAG early-warning monitor, and fault protection including +60 V load dump tolerance, −15 V reverse battery, short-circuit, and thermal overload. It operates down to 1.0 V output for reliable microprocessor power sequencing in vehicle body control modules.
For engineers reviewing the NCV8502D50R2G datasheet, pinout, applications, or equivalent options, key selection considerations include its 90 µA quiescent current at 100 µA load, 400–600 mV dropout at 150 mA, adjustable reset threshold via RADJ, and SO-8 footprint compatibility with AEC-Q100 qualification for under-hood environments.
Technical Context
The NCV8502D50R2G implements a bandgap-referenced error amplifier driving a PNP pass transistor, with independent comparator circuits for RESET (valid down to VOUT = 1.0 V) and FLAG (1.20 V typical MON threshold, 20–100 mV hysteresis). Its DELAY pin sources 1.5–3.5 µA to an external capacitor for programmable reset timing.
RESET activation occurs when VOUT rises above 98% of nominal (e.g., 4.90 V) during power-up or falls below 97% (e.g., 4.85 V) during operation; the FLAG signal asserts low when MON voltage drops below 1.10–1.31 V, providing pre-reset warning to microcontrollers before shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2.0% - ensures stable MCU core voltage across temperature and load without external feedback components. |
| Max Output Current | 150 mA - supports mid-complexity automotive sensors, CAN transceivers, and small microcontrollers without external pass devices. |
| Dropout Voltage | 400–600 mV at 150 mA - enables operation from 12 V battery down to ~5.6 V input while maintaining regulation. |
| Quiescent Current | 90 µA at 100 µA load - minimizes standby power loss in always-on vehicle modules (e.g., door ECU, alarm systems). |
| RESET Threshold | 4.55–4.70 V (rising), 4.50–4.60 V (falling) - provides precise brown-out detection with hysteresis to prevent chatter near trip point. |
| Load Dump Tolerance | +60 V peak transient - withstands ISO 7637-2 Pulse 5a without external clamping, simplifying front-end protection design. |
| Operating Temp | −40°C to +150°C junction - certified for engine bay, transmission, and chassis-mounted applications per AEC-Q100 Grade 0. |
Pinout & Package
NCV8502D50R2G uses the SO-8 narrow-body package (Case 751-07), 4.8–5.0 mm × 3.8–4.0 mm × 1.35–1.75 mm, with exposed pad not present (SO-8 NB, not SOW-16). Pin 1 is VIN; pins 3 and 4 are NC; pin 5 is GND; pin 6 is RESET; pin 7 is FLAG; pin 8 is VOUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input voltage supply | Accepts −15 V to +48 V DC; handles +60 V load dump transients without damage or latch-up. |
| MON (Pin 2) | Monitor input | Reference point for FLAG comparator; connect to VOUT for fixed 1.20 V threshold or use resistor divider for custom trip point. |
| RADJ (Pin 3) | Reset adjust | Grounded for default 4.6 V reset threshold; connect external resistor divider to lower threshold (e.g., for 3.3 V logic rails). |
| DELAY (Pin 4) | Reset timing capacitor node | Sources 1.5–3.5 µA to external capacitor; sets delay time per tDELAY = CDELAY × (VDT − VLOW) / ICHARGE. |
| GND (Pin 5) | Power ground | Must be connected to system ground plane; all internal grounds tie here - critical for noise immunity and thermal performance. |
| RESET (Pin 6) | Open-collector reset output | Active-low, sinks ≥1.0 mA; valid down to VOUT = 1.0 V - ensures clean MCU reset even during deep brown-out. |
| FLAG (Pin 7) | Open-collector early-warning output | Asserts low when MON voltage drops below threshold; gives MCU time to save state before RESET assertion. |
| VOUT (Pin 8) | Regulated 5.0 V output | ±2.0% accuracy over −40°C to +150°C; requires 10 µF output capacitor (low-ESR ceramic or tantalum) for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated RESET with programmable delay | Enables configurable power-on reset timing (via external capacitor) and robust brown-out detection down to 1.0 V output. |
| FLAG early-warning monitor | Provides pre-reset alert via open-collector output, allowing microcontrollers to complete critical tasks before forced shutdown. |
| AEC-Q100 qualified | Grade 0 (−40°C to +150°C) qualification confirms suitability for under-hood automotive applications without derating. |
| +60 V load dump tolerance | Eliminates need for external TVS diodes in ISO 7637-2 compliant designs, reducing BOM count and PCB area. |
| Low 90 µA quiescent current | Supports >10-year battery life in always-on modules (e.g., keyless entry receivers, tire pressure sensors). |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Subsystem |
|---|---|
Use Scenario: Powering 5 V microcontroller, LIN transceiver, and sensor interface circuitry in door module with wake-on-LIN capability. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying MCU core and peripherals; RESET ensures deterministic boot after battery reconnect; FLAG warns of impending brown-out during cranking. Use Value: 90 µA IQ extends sleep-mode battery life; +60 V tolerance eliminates external clamping; SO-8 footprint fits space-constrained door panels. |
Use Scenario: Providing regulated 5 V to crank-angle sensor signal conditioner and diagnostic CAN transceiver in engine bay. IC Role / Device Role / Timing Role: Local 5 V regulator with RESET/FLAG monitoring for sensor signal chain; withstands 150°C ambient and 60 V load dump pulses. Use Value: −40°C to +150°C operation meets engine bay thermal requirements; ±2.0% output accuracy ensures ADC reference stability. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Automotive Infotainment Power Sequencing |
Use Scenario: Supplying 5 V to image signal processor (ISP) and MIPI CSI-2 serializer in rear-view camera module mounted on tailgate. IC Role / Device Role / Timing Role: Secondary LDO delivering clean 5 V rail; FLAG alerts host processor of voltage sag before camera reset; RESET synchronizes ISP boot. Use Value: 150 mA output supports ISP + serializer; SO-8 package enables compact layout; AEC-Q100 ensures reliability in vibration-prone mounting location. |
Use Scenario: Generating controlled 5 V supply for USB hub controller and display backlight driver in head unit, with coordinated power-up sequence. IC Role / Device Role / Timing Role: Regulator with programmable RESET delay (via DELAY pin) to stagger enable timing between subsystems and avoid inrush current peaks. Use Value: Adjustable delay (e.g., 23.8 ms with 33 nF) prevents bus contention; 400 mV dropout allows operation during cold-cranking (6.5 V battery). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | 500 mA output, 250 mV dropout, 50 µA IQ, no RESET/FLAG, SOT-23-5 package | Lacks integrated reset and monitor functions; requires external supervisor IC for brown-out detection | Choose for higher current needs where RESET/FLAG are handled separately; smaller footprint but no automotive qualification |
| TPS7B6750QPWPRQ1 | 450 mA output, 400 mV dropout, 120 µA IQ, integrated RESET (no FLAG), HTSSOP-8 package | Includes RESET but no FLAG monitor; rated for −40°C to +125°C (Grade 1), not Grade 0 | Prefer for cost-sensitive Grade 1 applications needing higher current; FLAG omission requires alternate warning strategy |
Compared with TLV73350PDBVR and TPS7B6750QPWPRQ1, the NCV8502D50R2G uniquely combines AEC-Q100 Grade 0 qualification, integrated FLAG+RESET, and +60 V load dump tolerance in a standard SO-8 - making it the only drop-in solution for safety-critical, space-constrained automotive modules requiring pre-reset warning.
Availability
NCV8502D50R2G is available at Aetrix Electronics and suitable for automotive body electronics, engine management subsystems, and ADAS camera modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for NCV8502D50R2G 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 focused on energy-efficient technologies for automotive, industrial, cloud, medical, and IoT applications.
The NCV8502D50R2G belongs to the NCV8502 series of automotive LDO regulators designed specifically for harsh-environment microprocessor power management, featuring integrated supervision functions and extended voltage/transient tolerance.
FAQ
What is the maximum input voltage the NCV8502D50R2G can withstand during load dump events?
The NCV8502D50R2G is rated for +60 V peak transient voltage during load dump conditions (per ISO 7637-2 Pulse 5a), with guaranteed operation up to 45 V DC input. This eliminates the need for external TVS diodes in most automotive front-end designs, reducing component count and board space while maintaining AEC-Q100 compliance.
Does the NCV8502D50R2G require an external capacitor on the DELAY pin, and how is delay time calculated?
Yes, the NCV8502D50R2G requires an external capacitor on the DELAY pin to set reset delay time. Delay is calculated as tDELAY = CDELAY × (VDT − VLOW) / ICHARGE, where VDT = 1.4–2.2 V (typical 1.8 V), VLOW ≈ 0 V, and ICHARGE = 1.5–3.5 µA (typical 2.5 µA). For example, a 33 nF capacitor yields ~23.8 ms delay.
Can the NCV8502D50R2G's RESET threshold be adjusted, and how is this done?
Yes, the NCV8502D50R2G's RESET threshold can be lowered using an external resistor divider connected between VOUT and RADJ (Pin 3). Grounding RADJ selects the default 4.6 V threshold. The adjusted threshold follows VRST = VOUT × R2 / (R1 + R2), where R1 connects VOUT to RADJ and R2 connects RADJ to GND.
What is the purpose of the FLAG pin on the NCV8502D50R2G, and how is it used in system design?
The FLAG pin on the NCV8502D50R2G provides an early-warning signal that the output voltage is approaching the RESET threshold. It asserts low when the MON pin voltage drops below 1.10–1.31 V, giving the microcontroller time to save critical data or complete pending tasks before RESET shuts it down - preventing data corruption during brown-out events.
Is the NCV8502D50R2G still in active production, and what is its packaging format?
The NCV8502D50R2G is marked as discontinued in the official datasheet (Rev. 32, July 2024), but remains available through authorized distributors and Aetrix Electronics with full traceability and extended lifecycle support. It is supplied in Pb-free SO-8 tape-and-reel packaging (2500 units per reel), Case 751-07, with marking "85025ALYWWG".
NCV8502D50R2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 150mA
- 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:
- 8-SOIC
NCV8502D50R2G FAQ
1.How can I place an order for NCV8502D50R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8502D50R2G 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 NCV8502D50R2G reliable?
The price and inventory of NCV8502D50R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8502D50R2G is usually 5 days.
3.What payment methods are accepted for NCV8502D50R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8502D50R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8502D50R2G?
NCV8502D50R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8502D50R2G 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 NCV8502D50R2G?
For technical support, including NCV8502D50R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8502D50R2G requirements.
6.How does Aetrix verify that NCV8502D50R2G is sourced from the original manufacturer or authorized distributors?
All NCV8502D50R2G 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 NCV8502D50R2G meets industry standards.
7.What is the process for return or replacement of NCV8502D50R2G?
All NCV8502D50R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8502D50R2G, 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 NCV8502D50R2G part is unused and in its original packaging.
Return procedure for NCV8502D50R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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