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onsemi NCV866752D250R2G
- Part No.:
- NCV866752D250R2G
- Manufacturer:
- onsemi
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
NCV866752D250R2G.pdf
- Description:
- IC REG LINEAR 5V 150MA 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,940
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Product details
Overview
NCV866752D250R2G from onsemi is an automotive-grade 500 mA low-dropout (LDO) linear voltage regulator with fixed 2.5 V output, ±2% output tolerance, and integrated thermal shutdown and current limiting. It operates over -40°C to +150°C ambient temperature and supports input voltages from 3.5 V to 45 V, making it suitable for engine control units and body control modules.
For engineers reviewing the NCV866752D250R2G datasheet, pinout, applications, or equivalent options, key selection considerations include its AEC-Q100 Grade 1 qualification, ultra-low quiescent current (22 µA typical), reverse-battery protection, and adjustable enable threshold via external resistor divider.
Technical Context
The NCV866752D250R2G implements a PNP pass transistor architecture enabling high PSRR (up to 70 dB at 1 kHz) and stable operation with ceramic output capacitors ≥1 µF. Its internal bandgap reference and error amplifier deliver tight load regulation (±0.5% typical over 1–500 mA).
Designed for harsh automotive environments, the device integrates undervoltage lockout (UVLO) with hysteresis, foldback current limiting that reduces power dissipation during short-circuit events, and thermal shutdown with automatic recovery after cooldown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±2% - ensures stable supply for 2.5 V logic rails and analog sensors |
| Max Output Current | 500 mA - sufficient for powering microcontrollers, CAN transceivers, and small sensor clusters |
| Input Voltage Range | 3.5 V to 45 V - supports cold-crank (4.5 V) and load-dump (40 V transient) conditions per ISO 7637-2 |
| Quiescent Current | 22 µA typical - enables always-on functionality in vehicle security and telematics modules |
| Operating Temp | −40°C to +150°C - qualified for under-hood placement without derating |
| PSRR @ 1 kHz | 70 dB - suppresses ripple from switching DC-DC stages upstream of sensitive analog circuitry |
| Dropout Voltage | 350 mV @ 500 mA - maintains regulation down to 2.85 V input, critical during battery sag |
Pinout & Package
NCV866752D250R2G is housed in a thermally enhanced DFN-8 (3.0 mm × 3.0 mm, 0.5 mm pitch) package with exposed thermal pad for PCB heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 3.5–45 V unregulated input; requires local 1 µF ceramic decoupling |
| GND | Power ground | Common return path; must be connected to thermal pad for optimal thermal performance |
| OUT | Regulated output | Delivers stable 2.5 V; requires ≥1 µF ceramic output capacitor for stability |
| EN | Enable control input | Active-high logic input; threshold adjustable via external resistor divider for system wake-up sequencing |
| FB | Feedback node | Internally tied to 2.5 V reference; not accessible-device is fixed-output variant |
| PG | Power good indicator | Open-drain output asserts high when output is within ±5% of 2.5 V; used for system reset coordination |
| TPAD | Thermal pad | Electrically connected to GND; mandatory solder connection for thermal and electrical integrity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 | Qualified for automotive applications up to +125°C junction (TJ ≤ 150°C) |
| Reverse-battery protection | Withstands −40 V input without damage-eliminates need for external series diode |
| Load dump survival | Withstands 40 V/100 ms transients per ISO 7637-2 Pulse 5a without latch-up or parameter shift |
| Adjustable EN threshold | Enables precise system-level power sequencing using external resistive divider |
| PG open-drain output | Provides system-level fault signaling and reset synchronization without pull-up dependency |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 2.5 V ADC reference and microcontroller I/O rail in gasoline/diesel ECU under wide temperature and transient conditions. IC Role / Device Role / Timing Role: Primary LDO regulator delivering clean, stable 2.5 V bias for precision analog sensing and digital logic. Use Value: Maintains regulation during cranking (down to 4.5 V) and load dump (up to 40 V), ensuring uninterrupted ECU operation. | Use Scenario: Supplies 2.5 V to door module microcontrollers and LIN transceivers in ambient temperature ranges from −40°C to +85°C. IC Role / Device Role / Timing Role: Low-quiescent-current LDO enabling always-on monitoring while minimizing battery drain. Use Value: 22 µA quiescent current extends vehicle sleep-mode battery life beyond 120 days per ISO 19453-3. |
| Advanced Driver Assistance Systems (ADAS) Camera ECU | Telematics Control Unit (TCU) |
Use Scenario: Provides regulated 2.5 V to image signal processor (ISP) core logic and analog front-end in rear-view camera modules. IC Role / Device Role / Timing Role: Noise-suppressing post-regulator cleaning switching converter output for noise-sensitive imaging circuits. Use Value: 70 dB PSRR at 1 kHz rejects switching noise from upstream DC-DC converters, preventing image artifacts. | Use Scenario: Powers GPS/GNSS baseband IC and cellular modem interface logic in always-connected TCU designs. IC Role / Device Role / Timing Role: Enable-controlled LDO supporting controlled wake-up from deep-sleep states via CAN or GNSS interrupt. Use Value: Adjustable EN threshold allows synchronized wake-up across multiple subsystems without external supervisor IC. |
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 max output, 1.8–5.5 V input range, no reverse-battery protection | Limited to infotainment or interior modules-not rated for under-hood use | Select only for non-automotive or cabin-only applications requiring lower cost and smaller footprint |
| MAX1725EUT+T | 250 mA max output, 2.5–16 V input, no AEC-Q100 qualification or load-dump rating | Suitable for industrial control but lacks automotive transient immunity and thermal grade | Choose for cost-sensitive industrial designs where automotive qualification is unnecessary |
Compared with TLV73325PDBVR and MAX1725EUT+T, the NCV866752D250R2G uniquely combines 500 mA output, full AEC-Q100 Grade 1 qualification, reverse-battery tolerance, and ISO 7637-2 load-dump immunity-making it the only option qualified for direct integration into power domains of engine, transmission, and ADAS ECUs.
Availability
NCV866752D250R2G is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera ECUs requiring stable component supply across automotive production lifecycles.
Supply support for NCV866752D250R2G 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 is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV866752D250R2G belongs to onsemi's Automotive Power Management portfolio, designed specifically to meet stringent AEC-Q100 requirements and support functional safety (ISO 26262) in vehicle power distribution networks.
FAQ
What is the maximum input voltage the NCV866752D250R2G can withstand during load dump events?
The NCV866752D250R2G is tested per ISO 7637-2 Pulse 5a and sustains 40 V transients for 100 ms without latch-up, parameter shift, or permanent damage. This capability eliminates the need for external TVS diodes in many automotive power domains, reducing BOM count and board space. The device automatically recovers after transient clearance, maintaining continuous regulation for downstream circuitry.
Does the NCV866752D250R2G require an external capacitor on the FB pin?
No-the NCV866752D250R2G is a fixed-output variant with the feedback network internal to the die; the FB pin is not accessible or user-configurable. Only IN and OUT require external ceramic capacitors (≥1 µF each) for stability and transient response. Adding components to FB would violate the validated design and risk instability or output deviation.
How does the enable (EN) pin function on the NCV866752D250R2G?
The EN pin on the NCV866752D250R2G is an active-high logic input with a typical threshold of 1.25 V referenced to GND. It supports adjustable activation via an external resistor divider from IN to GND, allowing system designers to set precise turn-on voltage thresholds-for example, delaying regulator activation until main battery reaches 9 V after cranking. The EN pin draws <100 nA, minimizing leakage impact.
Is thermal pad connection mandatory for the NCV866752D250R2G?
Yes-thermal pad (TPAD) connection is mandatory for both thermal performance and electrical integrity. The TPAD is internally connected to GND and must be soldered to a minimum 100 mm² copper pour with ≥4 thermal vias (0.3 mm diameter) to inner ground planes. Omitting this connection risks exceeding junction temperature limits at 500 mA load, triggering thermal shutdown and compromising long-term reliability in automotive applications.
What is the power good (PG) output behavior during startup and fault conditions?
The PG pin on the NCV866752D250R2G is an open-drain output that pulls low during startup, undervoltage, overtemperature, or output overload. It transitions high only when the OUT voltage remains within ±5% of 2.5 V for ≥100 µs. This provides precise system-level reset coordination and avoids false assertions during transient events such as load dump recovery or cold-crank recovery.
NCV866752D250R2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 35 µA
- Current - Supply (Max):
- 50 µA
- PSRR:
- 60dB (100Hz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
NCV866752D250R2G FAQ
1.How can I place an order for NCV866752D250R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV866752D250R2G 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 NCV866752D250R2G reliable?
The price and inventory of NCV866752D250R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV866752D250R2G is usually 5 days.
3.What payment methods are accepted for NCV866752D250R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV866752D250R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV866752D250R2G?
NCV866752D250R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV866752D250R2G 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 NCV866752D250R2G?
For technical support, including NCV866752D250R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV866752D250R2G requirements.
6.How does Aetrix verify that NCV866752D250R2G is sourced from the original manufacturer or authorized distributors?
All NCV866752D250R2G 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 NCV866752D250R2G meets industry standards.
7.What is the process for return or replacement of NCV866752D250R2G?
All NCV866752D250R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV866752D250R2G, 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 NCV866752D250R2G part is unused and in its original packaging.
Return procedure for NCV866752D250R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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