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onsemi NCV8502D25G
- Part No.:
- NCV8502D25G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
NCV8502D25G.pdf
- Description:
- IC REG LINEAR 2.5V 150MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,533
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Product details
Overview
NCV8502D25G from onsemi is a 2.5 V fixed-output, 150 mA automotive-grade LDO linear regulator with ±2.0% output accuracy, 0.6 V dropout at full load, 90 µA quiescent current, and integrated active RESET (with programmable delay), FLAG early-warning monitor, and fault protection. It serves as the primary power supply for microprocessors in battery-powered automotive control modules.
For engineers reviewing the NCV8502D25G datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, −40°C to +150°C junction temperature range, 60 V peak transient tolerance, reverse-battery immunity (−15 V), and SO-8 package compatibility with automotive PCB layouts requiring high-reliability voltage regulation.
Technical Context
The NCV8502D25G implements a bandgap-referenced error amplifier driving a PNP pass transistor, enabling stable low-dropout operation. Its RESET circuit operates down to VOUT = 1.0 V and includes hysteresis (0.97×/0.98× VOUT thresholds) to prevent oscillation during brownout conditions.
The FLAG monitor uses an internal comparator referenced to 1.20 V (±0.11 V) with 20–100 mV hysteresis, while the MON input allows external threshold programming. The DELAY pin sources 2.5 µA typical current to set reset timing via an external capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±2.0% - ensures reliable logic-level supply for 2.5 V microcontrollers across temperature and load. |
| Max Output Current | 150 mA - sufficient to power core logic and I/O of automotive MCUs without external boosting. |
| Dropout Voltage | 600 mV max at 150 mA - enables operation with VIN as low as 3.1 V while maintaining regulation. |
| Quiescent Current | 90 µA at 100 µA load - minimizes battery drain in always-on vehicle subsystems (e.g., body control modules). |
| RESET Threshold | 2.25 V to 2.35 V (low-to-high), 2.28 V to 2.30 V (high-to-low) - provides precise brownout detection with hysteresis for glitch-free MCU reset. |
| Operating Temp | −40°C to +150°C junction - meets under-hood automotive thermal requirements without derating. |
| Transient Immunity | +60 V peak (load dump), −15 V reverse battery - eliminates need for external TVS or polarity protection in 12 V systems. |
Pinout & Package
NCV8502D25G is housed in an SO-8 narrow-body package (Case 751-07), Pb-free, with exposed pad not present. Pin 1 is VIN; Pin 2 is MON; Pins 3–4 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 4.5–45 V DC input; withstands 60 V transients and −15 V reverse polarity. |
| MON (Pin 2) | Monitor input | Connects to VOUT or external divider to set FLAG warning threshold; supports early brownout detection. |
| NC (Pins 3–4) | No connection | Internally unconnected; must be left floating or tied to GND per layout best practice. |
| GND (Pin 5) | Ground reference | Primary ground return for regulator, RESET, and FLAG; requires low-impedance PCB plane connection. |
| RESET (Pin 6) | Active-low reset output | Open-collector NPN; asserts low when VOUT drops below threshold; valid down to VOUT = 1.0 V. |
| FLAG (Pin 7) | Early-warning flag output | Open-collector; pulls low when MON input crosses threshold, giving MCU time to save state before RESET. |
| VOUT (Pin 8) | Regulated output | 2.5 V ±2.0% output; supplies MCU core/I/O; requires 10 µF ceramic output capacitor for stability. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Qualified to Grade 1 (−40°C to +125°C ambient) and validated for automotive PPAP; supports functional safety-aware designs. |
| Integrated FLAG monitor | Provides programmable early-warning signal (via MON pin) to allow MCU firmware to complete critical tasks before RESET assertion. |
| Adjustable RESET threshold | External resistor divider on RADJ (not present on D25G; fixed internally) - not applicable to this variant; RESET threshold is factory-set for 2.5 V output. |
| Robust fault protection | Includes short-circuit, thermal overload, reverse-battery (−15 V), and 60 V load-dump transient protection - reduces BOM count in automotive ECUs. |
| Low-noise micropower operation | 90 µA IQ at light load enables >10-year battery life in always-on telematics modules with infrequent wake-up cycles. |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Subsystem |
|---|---|
Use Scenario: Powers 2.5 V CAN controller and sensor interface ICs in door module electronics. IC Role / Device Role / Timing Role: Primary 2.5 V LDO supplying logic rails; RESET signals microcontroller on battery undervoltage during cranking. Use Value: Maintains regulation down to 3.1 V input, enabling uninterrupted operation during 6–8 V cranking dips common in 12 V systems. | Use Scenario: Supplies auxiliary 2.5 V rail for knock sensor ADC and diagnostic circuitry within main ECU housing. IC Role / Device Role / Timing Role: Secondary regulated supply with independent RESET/FLAG; decouples noise-sensitive analog front-end from main 5 V domain. Use Value: FLAG output alerts ECU firmware 20+ ms before RESET, allowing safe shutdown of sensor sampling and flash write operations. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Automotive Infotainment Power Sequencing |
Use Scenario: Powers image signal processor (ISP) I/O banks requiring clean, stable 2.5 V supply in rear-view camera module. IC Role / Device Role / Timing Role: Low-noise, low-IQ LDO with EMC-optimized design; RESET coordinates ISP initialization with main SoC boot sequence. Use Value: 150 mA output and 0.6 V dropout support operation from 3.3 V intermediate rail, reducing heat generation in compact sealed housings. | Use Scenario: Provides controlled 2.5 V enable signal and timed RESET to audio DSP during ignition-on power-up sequence. IC Role / Device Role / Timing Role: Sequencing element: DELAY pin sets 10–100 ms reset hold-off via external capacitor; FLAG monitors pre-reset voltage margin. Use Value: Programmable DELAY ensures audio subsystem powers up only after main processor and memory are fully initialized, preventing bus contention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73325PDBVR | 300 mA output, 170 mV dropout at 300 mA, no RESET/FLAG, SOT-23-5 package | Lacks integrated monitoring and reset functions; requires external supervisor IC for brownout handling | Choose for higher current needs where system-level supervision already exists and space-constrained layouts favor SOT-23 |
| TPS7B6725QPWPRQ1 | 200 mA output, 300 mV dropout, integrated watchdog timer, same SO-8 package, AEC-Q100 Grade 1 | Includes watchdog but no FLAG early-warning function; RESET threshold fixed at 92% of VOUT | Prefer when system requires watchdog timeout recovery but can accept reduced early-warning capability versus NCV8502D25G |
Compared with TLV73325PDBVR and TPS7B6725QPWPRQ1, the NCV8502D25G uniquely combines 2.5 V precision regulation, automotive-grade transient robustness, and dual-stage brownout signaling (FLAG + RESET) in a single SO-8 footprint-enabling simpler, more reliable power management in cost-sensitive automotive control units.
Availability
NCV8502D25G is available at Aetrix Electronics and suitable for automotive body electronics, engine management subsystems, and ADAS camera modules requiring stable component supply with long-term lifecycle assurance.
Supply support for NCV8502D25G 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 (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV8502 series belongs to onsemi's automotive power management portfolio, designed specifically for harsh-environment microprocessor power delivery with integrated supervision-targeting body control, chassis, and infotainment systems demanding AEC-Q100 compliance and PPAP readiness.
FAQ
What is the minimum input voltage required for NCV8502D25G to maintain regulation?
The NCV8502D25G maintains 2.5 V regulation with a minimum input voltage of 3.1 V, based on its maximum 600 mV dropout voltage at 150 mA load. Below this, output voltage drops linearly with input; the device remains functional but exits regulation. Input must also stay within absolute maximum ratings (−15 V to 48 V).
Does NCV8502D25G require an external capacitor on the DELAY pin?
No - the NCV8502D25G does not use a DELAY pin. That pin is present only on adjustable-output variants (e.g., NCV8502DADJG). The fixed 2.5 V version (NCV8502D25G) integrates a fixed-delay RESET function; no external capacitor is needed or supported for timing adjustment.
Can the FLAG output of NCV8502D25G drive a standard CMOS input directly?
Yes - the FLAG pin is an open-collector NPN output rated for 1.0 mA sink current. When pulled up to 2.5 V or 3.3 V with a 10 kΩ resistor, it delivers clean logic-low (≤0.4 V) and logic-high (>2.0 V) levels compatible with standard CMOS inputs, including those of automotive microcontrollers.
Is NCV8502D25G pin-compatible with other parts in the NCV8502 family?
Yes - all SO-8 variants in the NCV8502 family (including NCV8502D25G, NCV8502D33G, and NCV8502DADJG) share identical pinouts and footprints. However, internal connections differ: fixed-output versions route RADJ/DELAY to internal logic, while adjustable versions expose VADJ and require external feedback. Swapping requires verifying external circuit compatibility.
What is the thermal resistance (RJA) of NCV8502D25G in SO-8 package?
The SO-8 package of NCV8502D25G has a specified junction-to-ambient thermal resistance (RJA) of 165°C/W under standard JEDEC test conditions (single-layer 1 in² copper pad). Actual RJA improves significantly with PCB copper area - adding a 200 mm² exposed pad beneath the package reduces RJA to ~90°C/W.
NCV8502D25G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 8-SOIC
NCV8502D25G FAQ
1.How can I place an order for NCV8502D25G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8502D25G 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 NCV8502D25G reliable?
The price and inventory of NCV8502D25G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8502D25G is usually 5 days.
3.What payment methods are accepted for NCV8502D25G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8502D25G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8502D25G?
NCV8502D25G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8502D25G 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 NCV8502D25G?
For technical support, including NCV8502D25G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8502D25G requirements.
6.How does Aetrix verify that NCV8502D25G is sourced from the original manufacturer or authorized distributors?
All NCV8502D25G 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 NCV8502D25G meets industry standards.
7.What is the process for return or replacement of NCV8502D25G?
All NCV8502D25G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8502D25G, 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 NCV8502D25G part is unused and in its original packaging.
Return procedure for NCV8502D25G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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