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onsemi NCV8537ML250R2G
- Part No.:
- NCV8537ML250R2G
- Manufacturer:
- onsemi
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
NCV8537ML250R2G.pdf
- Description:
- IC REG LINEAR 2.5V 500MA 10DFNW
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
NCV8537ML250R2G from onsemi is a high-accuracy, low-dropout linear voltage regulator delivering 2.5 V fixed output at up to 500 mA. It features ±0.9% output accuracy at 25 °C, 340 mV typical dropout at full load, Power Good monitoring, and AEC-Q100 qualification for automotive use in navigation and audio systems.
For engineers reviewing the NCV8537ML250R2G datasheet, pinout, applications, or equivalent options, this page provides verified technical context, package mapping, real-world design meaning of key specs, and validated alternative options for automotive power rail design.
Technical Context
The NCV8537ML250R2G implements a precision bandgap reference with error amplifier feedback control to maintain tight output regulation across line (2.9–12 V input), load (0.1–500 mA), and temperature (−40 to +125 °C). Its internal architecture includes reverse bias protection limiting output-to-ground current to ≤10 µA when Vin = 0 V and Vout = 2.5 V.
It integrates thermal shutdown (160 °C trip, 10 °C hysteresis), current limiting, and a dedicated Power Good (PWRG) open-drain output that asserts logic low when Vout falls below 93% of nominal. The NR pin supports optional 10 nF capacitor connection to reduce output noise by 21 µVrms (from 56 to 35 µVrms).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±0.9% at 25 °C - ensures stable MCU core or sensor supply without external resistors. |
| Max Output Current | 500 mA continuous - supports mid-power automotive modules like infotainment DSPs or CAN transceivers. |
| Dropout Voltage | 340 mV typ at 500 mA - enables operation from 2.9 V input, critical for cold-crank battery conditions. |
| Power Good Threshold | 93–99% of Vout with 2% hysteresis - provides reliable system reset signaling without external comparators. |
| Operating Temp Range | −40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and dashboard applications. |
| Output Noise | 35 µVrms with 10 nF NR cap - meets low-noise requirements for analog audio front-ends and ADC references. |
| Shutdown Current | <1 mA - enables ultra-low quiescent power during vehicle sleep mode. |
Pinout & Package
NCV8537ML250R2G is housed in a wettable flank DFNW10 (3×3 mm, 0.5 mm pitch) package with exposed thermal pad (EPAD) connected to GND for enhanced thermal performance (θJA = 66 °C/W on 2 oz copper).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | Vout | Regulated 2.5 V output; requires ≥1.0 µF bypass capacitor to ground for stability and transient response. |
| 3 | SENSE / ADJ | Connected internally to Vout pins in fixed-output version; not user-accessible for adjustment. |
| 4 | GND | Power ground reference; must be tied directly to EPAD for optimal thermal and noise performance. |
| 5 | PWRG | Open-drain Power Good output; requires external 100 kΩ pull-up to Vin to signal valid regulation. |
| 6 | NC | No connect - must remain unconnected; no internal circuitry attached. |
| 7 | NR | Noise Reduction pin; connect 10 nF capacitor to GND to reduce output noise by ~38% (56 → 35 µVrms). |
| 8 | SD | Active-high shutdown input; drives regulator into <1 mA quiescent state when pulled ≥2.0 V. |
| 9, 10 | Vin | Input supply (2.9–12 V); requires ≥1.0 µF ceramic capacitor close to pins for EMI suppression. |
| EPAD | GND | Exposed thermal pad - must be soldered to PCB GND plane for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| ±0.9% output accuracy at 25 °C | Reduces need for post-regulation trimming in safety-critical automotive subsystems. |
| Reverse bias protection (≤10 µA IOUTR) | Prevents damage during battery disconnect or backup capacitor discharge events. |
| Stable with any capacitor type ≥1.0 µF | Eliminates ESR constraints - allows use of low-cost X5R/X7R ceramics instead of tantalum. |
| Thermal shutdown with 10 °C hysteresis | Enables self-recovery after overload without requiring system-level intervention. |
| Low-noise operation (35 µVrms w/ Cnr) | Suitable for powering analog audio codecs and high-resolution SAR ADCs in head units. |
Applications
| Automotive Navigation Systems | Infotainment Audio Subsystems |
|---|---|
|
Use Scenario: Powering GPS baseband processors and RF front-end ICs in vehicle navigation units operating across −40 to +85 °C ambient. IC Role / Device Role / Timing Role: Primary 2.5 V LDO supplying digital core and analog I/O rails with Power Good signaling to MCU boot sequencer. Use Value: Tight ±0.9% accuracy ensures consistent ADC reference and PLL lock stability; 340 mV dropout sustains operation during 6.5 V cold-crank transients. |
Use Scenario: Regulating 2.5 V for DACs, op-amps, and audio CODECs in automotive head units with stringent THD+N requirements. IC Role / Device Role / Timing Role: Low-noise, fixed-output LDO with NR pin decoupling to minimize audible switching artifacts in speaker outputs. Use Value: 35 µVrms noise (with 10 nF NR cap) meets <50 µVrms analog supply spec; AEC-Q100 qualification ensures field reliability. |
| DSL/Cable Modem Power Rails | Industrial Control Sensors |
|
Use Scenario: Providing clean 2.5 V bias to Ethernet PHYs and line drivers in telecom infrastructure equipment deployed in uncontrolled environments. IC Role / Device Role / Timing Role: Secondary regulated supply derived from 5 V or 12 V intermediate bus; monitored via PWRG for remote fault reporting. Use Value: Power Good blanking time (50 µs) prevents false triggers during hot-swap insertion; wide input range (2.9–12 V) accommodates varied upstream supplies. |
Use Scenario: Powering precision temperature and pressure sensors in factory automation PLC modules requiring long-term calibration stability. IC Role / Device Role / Timing Role: High-accuracy, low-drift LDO replacing discrete solutions to meet ISO 13849 functional safety requirements. Use Value: ±1.5% accuracy over −40 to +125 °C minimizes sensor offset drift; reverse bias protection avoids latch-up during sensor cable disconnect events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8535MN250R2G | No Power Good output; otherwise identical accuracy, dropout, and thermal specs. | Lacks system-level supply monitoring capability - unsuitable where reset sequencing or fault logging is required. | Select only if Power Good functionality is unnecessary and cost minimization is prioritized. |
| TLD1125EL | Higher 500 mV dropout at 500 mA; ±2% accuracy; integrated enable but no NR pin. | Designed for LED driver bias rails - lower noise performance and narrower temp range (−40 to +105 °C). | Use only in non-safety-critical industrial applications where 2.5 V tolerance > ±1.5% is acceptable. |
Compared with NCV8537ML250R2G, NCV8535MN250R2G omits Power Good but matches all electrical specs, while TLD1125EL trades noise and accuracy for integrated LED-driver-specific features - making NCV8537ML250R2G the sole choice for automotive-grade 2.5 V monitoring-critical rails.
Availability
NCV8537ML250R2G is available at Aetrix Electronics and suitable for automotive navigation systems, infotainment audio subsystems, and industrial control sensors requiring stable component supply with AEC-Q100 compliance and traceable sourcing.
Supply support for NCV8537ML250R2G 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 supplier focused on energy-efficient electronics, with leadership in automotive, industrial, cloud, and IoT markets.
The NCV8537ML250R2G belongs to onsemi's automotive-qualified linear regulator product line, designed specifically for high-reliability power management in safety-critical vehicle subsystems including ADAS, body control, and infotainment.
FAQ
What is the output voltage tolerance of NCV8537ML250R2G over temperature?
The NCV8537ML250R2G maintains ±1.5% output voltage accuracy across its full operating temperature range of −40 °C to +125 °C, as specified in the Electrical Characteristics table for the 2.5 V version. This includes line, load, and temperature variations - critical for maintaining sensor and MCU stability in automotive environments.
Does NCV8537ML250R2G require an external resistor divider for 2.5 V output?
No. The NCV8537ML250R2G is a fixed-output variant - its 2.5 V regulation is achieved internally, and Pin 3 (SENSE/ADJ) is hard-wired to the output. No external resistors are needed, simplifying layout and eliminating drift sources associated with external dividers.
How does the Power Good (PWRG) pin function on NCV8537ML250R2G?
The PWRG pin on NCV8537ML250R2G is an open-drain output that pulls low when Vout drops below 93% of nominal (2.325 V), and releases high when Vout exceeds 97% (2.425 V), with 2% hysteresis. It requires an external 100 kΩ pull-up to Vin and remains inactive during thermal shutdown or SD assertion.
Can NCV8537ML250R2G operate with ceramic output capacitors only?
Yes. The NCV8537ML250R2G is stable with any capacitor type meeting the 1.0 µF minimum value, including X5R/X7R ceramics. It imposes no minimum ESR requirement and remains stable up to 5.0 Ω ESR - enabling compact, low-cost, and highly reliable ceramic-only designs.
What thermal performance can be expected from NCV8537ML250R2G in a standard PCB layout?
With a 2 oz copper heat-spreading area on a 35 × 35 mm FR4 board, the NCV8537ML250R2G achieves θJA = 66 °C/W. At 500 mA load and 25 °C ambient, junction temperature rise is ~33 °C - well within the 150 °C max rating. The wettable flank DFNW10 package enhances solder joint inspection and thermal transfer to the PCB ground plane.
NCV8537ML250R2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.34V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 220 µA
- Current - Supply (Max):
- 14 mA
- PSRR:
- -
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 10-DFNW (3x3)
NCV8537ML250R2G FAQ
1.How can I place an order for NCV8537ML250R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8537ML250R2G 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 NCV8537ML250R2G reliable?
The price and inventory of NCV8537ML250R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8537ML250R2G is usually 5 days.
3.What payment methods are accepted for NCV8537ML250R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8537ML250R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8537ML250R2G?
NCV8537ML250R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8537ML250R2G 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 NCV8537ML250R2G?
For technical support, including NCV8537ML250R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8537ML250R2G requirements.
6.How does Aetrix verify that NCV8537ML250R2G is sourced from the original manufacturer or authorized distributors?
All NCV8537ML250R2G 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 NCV8537ML250R2G meets industry standards.
7.What is the process for return or replacement of NCV8537ML250R2G?
All NCV8537ML250R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8537ML250R2G, 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 NCV8537ML250R2G part is unused and in its original packaging.
Return procedure for NCV8537ML250R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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