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onsemi NCV8537MN180R2G
- Part No.:
- NCV8537MN180R2G
- Manufacturer:
- onsemi
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
NCV8537MN180R2G.pdf
- Description:
- IC REG LINEAR 1.8V 500MA 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
NCV8537MN180R2G from onsemi is a high-accuracy, low-dropout linear regulator delivering 1.8 V at up to 500 mA with ±0.9% output accuracy at 25 °C, 340 mV typical dropout at full load, and integrated Power Good monitoring. It operates across −40 °C to +125 °C and is AEC-Q100 qualified for automotive power rails in navigation systems and audio subsystems.
For engineers reviewing the NCV8537MN180R2G datasheet, pinout, applications, or equivalent options, this page provides verified specifications, thermal performance data, Power Good timing behavior, noise-reduction capacitor guidance, and validated automotive-grade alternatives - all confirmed against the official onsemi NCV8537/D Rev. 7 datasheet.
Technical Context
The NCV8537MN180R2G implements a precision bandgap reference, error amplifier, and thermally protected series pass element with reverse bias protection. Its Power Good circuit asserts logic high when output voltage reaches ≥95% of nominal (1.71 V) and remains asserted until falling below 93% (1.674 V), with 50 µs blanking time to suppress startup transients.
It supports both fixed-output (1.8 V) and adjustable configurations via SENSE/ADJ pin, uses no minimum load requirement, and maintains stability with any 1.0 µF output capacitor - including ceramic, tantalum, or polymer - regardless of ESR value, enabling robust design in space-constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±0.9% at 25 °C; ±1.5% over −40 °C to +125 °C - ensures stable core voltage for automotive microcontrollers. |
| Max Output Current | 500 mA continuous; 700–830 mA peak - sufficient for powering DSPs, CAN transceivers, and sensor interfaces. |
| Dropout Voltage | 340 mV typ at 500 mA (VIN ≥ 2.9 V) - enables operation from 3.3 V rail with margin for battery droop in vehicle start-stop cycles. |
| Power Good Threshold | 93–99% of VOUT with 2% hysteresis and 50 µs blanking - provides reliable supply monitoring without false triggers during brown-in/out events. |
| Input Voltage Range | 2.9 V to 12 V - compatible with 12 V automotive battery systems after pre-regulation or direct connection to stabilized 5 V/3.3 V supplies. |
| Output Noise | 33 µVRMS (with 10 nF CNR), 52 µVRMS (no CNR) - meets low-noise requirements for analog audio stages and ADC reference supplies. |
| Thermal Protection | 160 °C shutdown with 10 °C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
NCV8537MN180R2G is housed in a 10-pin DFN package (3 mm × 3 mm, 0.5 mm pitch, Case 485C) with exposed thermal pad (EPAD) connected to GND for enhanced thermal dissipation. The package is Pb-free and features non-wettable flank plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | Vout | Regulated 1.8 V output; bypassed to GND with ≥1.0 µF capacitor - primary power delivery node for downstream ICs. |
| 3 | SENSE / ADJ | Feedback input for fixed-output mode (tied to Pins 1–2); adjustable reference node for external resistor divider - not used in this 1.8 V fixed variant. |
| 4 | GND | Power ground return; must be low-impedance path to EPAD - critical for noise immunity and thermal performance. |
| 5 | PWRG | Open-drain Power Good output; pulled high externally (e.g., 100 kΩ to VIN) - signals system controller when VOUT is within spec. |
| 6 | NC | No internal connection - must remain unconnected; floating or tied to GND per layout best practice. |
| 7 | NR | Noise Reduction pin; connect 10 nF capacitor to GND to reduce output noise by ~35% - optional but recommended for audio/sensor rails. |
| 8 | SD | Active-low shutdown control; <0.4 V = OFF (<1 µA IQ), >2.0 V = ON - enables system-level power sequencing and sleep mode control. |
| 9, 10 | Vin | Input supply (2.9–12 V); decoupled with ≥1.0 µF capacitor - accepts wide-input automotive rails with minimal external filtering. |
| EPAD | GND | Exposed thermal pad; soldered to PCB GND plane - reduces θJA from 215 °C/W to 66 °C/W, enabling higher ambient operation. |
Key Features
| Feature | Design Value |
|---|---|
| High accuracy over temperature | ±1.5% output tolerance from −40 °C to +125 °C - eliminates need for post-production calibration in automotive ECUs. |
| Reverse bias protection | Withstands 7 V reverse voltage (VOUT > VIN) with <10 µA leakage - prevents damage during hot-swap or backup-capacitor discharge events. |
| Low-noise operation | 33 µVRMS noise with 10 nF NR capacitor - supports high-resolution SAR ADCs and Class-D audio amplifiers without additional LDO stages. |
| Stable with zero-ESR capacitors | No minimum ESR requirement; stable with ceramic, polymer, or tantalum ≥1.0 µF - simplifies BOM and improves transient response. |
| Automotive qualification | AEC-Q100 Grade 1 (−40 °C to +125 °C) and PPAP capable - meets OEM requirements for safety-critical infotainment and ADAS subsystems. |
Applications
| Automotive Audio Systems | Navigation & Telematics Modules |
|---|---|
|
Use Scenario: Powering digital signal processors (DSPs), audio codecs, and RF front-ends in head unit designs. IC Role / Device Role / Timing Role: Primary 1.8 V core supply for low-power SoCs requiring tight voltage regulation and low noise. Use Value: ±0.9% accuracy and 33 µVRMS noise ensure clean clock domains and minimal THD+N in audio playback paths. |
Use Scenario: Supplying GPS/GNSS receivers, cellular modems, and display controllers in dashboard navigation units. IC Role / Device Role / Timing Role: Fixed 1.8 V rail generator with Power Good signaling for safe boot sequence coordination. Use Value: 50 µs PWRG blanking and 93–99% threshold window prevent false resets during cold cranking or alternator ripple. |
| DSL/Cable Modem Power Rails | Industrial Control I/O Modules |
|
Use Scenario: Providing regulated 1.8 V to Ethernet PHYs, packet processors, and memory interfaces in broadband gateways. IC Role / Device Role / Timing Role: Secondary LDO stage following buck converter; delivers low-noise, high-PSRR supply. Use Value: 340 mV dropout allows operation from 3.3 V intermediate rail even under worst-case line/load conditions. |
Use Scenario: Powering isolated communication interfaces (RS-485, CAN FD) and microcontroller peripherals in factory automation PLCs. IC Role / Device Role / Timing Role: Robust 1.8 V supply with thermal shutdown and reverse bias protection for harsh industrial environments. Use Value: 160 °C thermal cutoff and −40 °C to +125 °C operation ensure reliability in uncooled enclosures near motors or drives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8535MN180R2G | No Power Good output; otherwise identical architecture, accuracy, and thermal specs - legacy predecessor without monitoring capability. | Lacks PWRG signaling; unsuitable where supply health monitoring is required for system safety or diagnostics. | Select only if Power Good is unnecessary and cost minimization is prioritized over functional completeness. |
| TLD1114-18-1 | 1.8 V, 500 mA, AEC-Q100 qualified; higher dropout (450 mV @ 500 mA), no NR pin, but includes current sense output. | Better suited for current-monitoring applications (e.g., LED driver feedback), less optimal for ultra-low-noise audio rails. | Choose when real-time load current telemetry is needed; avoid when low noise or minimal dropout is critical. |
Compared with NCV8537MN180R2G, NCV8535MN180R2G omits Power Good functionality while retaining identical regulation performance, whereas TLD1114-18-1 trades lower noise and dropout for integrated current sensing - making each suitable for distinct automotive subsystem roles.
Availability
NCV8537MN180R2G is available at Aetrix Electronics and suitable for automotive infotainment, navigation systems, and industrial control modules requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for NCV8537MN180R2G 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 electronics for automotive, industrial, cloud, and IoT applications.
The NCV8537 series was designed specifically for automotive power management - delivering high-accuracy, low-noise, and fault-resilient regulation in engine bay and cabin environments where temperature, vibration, and EMI are severe.
FAQ
What is the maximum input voltage rating for the NCV8537MN180R2G?
The NCV8537MN180R2G has an absolute maximum input voltage of +16 V, but its recommended operating range is 2.9 V to 12 V. Operation above 12 V may exceed thermal limits under full load unless PCB copper area and airflow are optimized per JEDEC 51 thermal test board guidelines.
Does the NCV8537MN180R2G require an external pull-up resistor on the PWRG pin?
Yes - the PWRG pin is open-drain and requires an external pull-up resistor (typically 100 kΩ to VIN) to generate a valid logic-high signal. Without it, the pin remains floating and cannot indicate proper regulation status to the host controller.
Can the NCV8537MN180R2G operate without the NR (Noise Reduction) capacitor?
Yes - the NCV8537MN180R2G functions fully without the 10 nF NR capacitor. However, omitting it increases output noise from 33 µVRMS to 52 µVRMS, which may impact sensitive analog circuits like audio DACs or precision ADC references.
Is the NCV8537MN180R2G pin-compatible with other variants in the NCV8537 family?
Yes - all NCV8537 variants (1.8 V, 2.5 V, 3.3 V, 5.0 V, and adjustable) share identical DFN10 pinout and footprint (Case 485C). This enables single PCB design reuse across multiple output voltages with only BOM and firmware changes.
What thermal derating applies to the NCV8537MN180R2G at 125 °C ambient?
At 125 °C ambient, the NCV8537MN180R2G's maximum continuous output current drops to ~300 mA (based on θJA = 66 °C/W and TJ(max) = 150 °C). Derating curves are provided in Figure 11 of the datasheet; forced airflow or increased copper area restores full 500 mA capability.
NCV8537MN180R2G 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.62V @ 500mA (Typ)
- 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
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
NCV8537MN180R2G FAQ
1.How can I place an order for NCV8537MN180R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8537MN180R2G 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 NCV8537MN180R2G reliable?
The price and inventory of NCV8537MN180R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8537MN180R2G is usually 5 days.
3.What payment methods are accepted for NCV8537MN180R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8537MN180R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8537MN180R2G?
NCV8537MN180R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8537MN180R2G 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 NCV8537MN180R2G?
For technical support, including NCV8537MN180R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8537MN180R2G requirements.
6.How does Aetrix verify that NCV8537MN180R2G is sourced from the original manufacturer or authorized distributors?
All NCV8537MN180R2G 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 NCV8537MN180R2G meets industry standards.
7.What is the process for return or replacement of NCV8537MN180R2G?
All NCV8537MN180R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8537MN180R2G, 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 NCV8537MN180R2G part is unused and in its original packaging.
Return procedure for NCV8537MN180R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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