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onsemi NCV8720BMT170TBG
- Part No.:
- NCV8720BMT170TBG
- Manufacturer:
- onsemi
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
NCV8720BMT170TBG.pdf
- Description:
- IC REG LINEAR 1.7V 350MA 6WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:58,450
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Product details
Overview
NCV8720BMT170TBG from onsemi is a 350 mA very low dropout (VLDO) linear voltage regulator with NMOS pass transistor and separate VBIAS supply, delivering 1.70 V fixed output at ±2% accuracy over −40 °C to +125 °C, ultra-low 110 mV typical dropout at full load, and 80 µA typical bias current - designed for automotive point-of-load regulation in FPGA, DSP, and camera power systems.
For engineers reviewing the NCV8720BMT170TBG datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (WDFN6 2 mm × 2 mm), confirmed pin functions, real-world PSRR performance (70 dB @ 1 kHz on VBIAS), thermal shutdown behavior (+160 °C trip), and validated alternatives for AEC-Q100 Grade 1 designs.
Technical Context
The NCV8720BMT170TBG implements dual-rail regulation: VIN supplies the NMOS pass element while VBIAS powers internal control circuitry, enabling stable operation down to VIN = VOUT + 110 mV and VBIAS ≥ VOUT + 1.4 V. Its architecture decouples output stability from input capacitor ESR, unlike PMOS LDOs.
It integrates monotonic soft-start, undervoltage lockout (1.6 V VBIAS threshold with 0.2 V hysteresis), and thermal shutdown with automatic recovery (+140 °C reset). The enable pin supports direct connection to VIN/VBIAS when unused and draws only 0.5 µA in shutdown mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.70 V - factory-programmed, no external feedback required |
| Max Output Current | 350 mA continuous - supports FPGA core I/O and DSP logic rails |
| VIN Dropout Voltage | 110 mV typ. @ 350 mA - enables regulation from 1.81 V input in 1.70 V systems |
| VBIAS Dropout Voltage | 1.15 V min. - requires VBIAS ≥ 2.85 V for stable 1.70 V output |
| Output Accuracy | ±2% over −40 °C to +125 °C - meets AEC-Q100 Grade 1 automotive requirements |
| PSRR (VBIAS) | 70 dB @ 1 kHz - suppresses noise from shared bias rails in multi-rail systems |
| Thermal Shutdown | +160 °C trip / +140 °C reset - protects against sustained overload in sealed enclosures |
Pinout & Package
NCV8720BMT170TBG uses the WDFN6 2 mm × 2 mm package (Case 511BR) with wettable flanks option, thermal pad soldered to ground plane for 65 °C/W junction-to-air thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output | Delivers 1.70 V to load; requires 2.2 µF ceramic capacitor directly connected |
| 2 - N/C | No internal connection | Must remain unconnected; no routing or stitching allowed |
| 3 - EN | Enable control | Active-high logic: ≥1.1 V enables regulator; ≤0.4 V disables with 0.5 µA shutdown current |
| 4 - BIAS | Bias supply input | Powers internal reference and control circuits; monitored by UVLO (1.6 V threshold) |
| 5 - GND | Ground reference | Common return for IN, OUT, BIAS, and EN; thermal pad must be soldered to PCB ground plane |
| 6 - IN | Main input supply | Feeds NMOS pass transistor; supports 0.8–5.5 V input range with 110 mV dropout |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail NMOS architecture | Separates power path (VIN→OUT) from control rail (VBIAS), enabling lower dropout and higher PSRR than PMOS LDOs |
| Monotonic soft-start | Guarantees controlled VOUT rise without undershoot/overshoot during power-up, limiting inrush to 100 mA + ILOAD |
| Stable with 2.2 µF ceramic output cap | Eliminates need for high-ESR tantalum or aluminum electrolytic capacitors, reducing board area and cost |
| AEC-Q100 Grade 1 qualified | Validated for −40 °C to +125 °C ambient operation with PPAP capability - suitable for engine bay and infotainment modules |
| Ultra-low bias current | 80 µA typical IBias enables >10-year battery life in always-on automotive sensors powered from VBIAS |
Applications
| Automotive Infotainment SoC Core Supply | FPGA I/O Bank Regulation |
|---|---|
Use Scenario: Powering 1.7 V I/O banks of automotive-grade FPGAs in head-unit systems where VIN varies between 3.3 V and 5.0 V under load dump conditions. IC Role / Device Role / Timing Role: Post-regulator providing clean, low-noise 1.70 V rail downstream of a switching DC/DC converter. Use Value: 70 dB PSRR at 1 kHz rejects ripple from upstream buck converters; 110 mV dropout ensures regulation during cold-crank (VIN = 6.0 V → 3.2 V). | Use Scenario: Supplying configurable 1.7 V I/O banks in ADAS domain controllers requiring precise voltage tolerance and fast transient response. IC Role / Device Role / Timing Role: Low-noise, high-accuracy linear regulator delivering stable voltage to FPGA I/O pins during configuration and high-speed data transfer. Use Value: ±2% output accuracy over temperature ensures signal integrity across automotive operating range; monotonic soft-start prevents configuration errors during power-up. |
| Camera Module Sensor Bias Rail | Industrial PLC Digital I/O Isolation Supply |
Use Scenario: Providing ultra-low-noise 1.70 V bias to CMOS image sensor analog front-end in automotive rear-view cameras. IC Role / Device Role / Timing Role: Noise-sensitive analog supply rail decoupled from noisy digital domains via separate VBIAS sourcing. Use Value: 40 µVRMS output noise (10 Hz–100 kHz) preserves SNR in image capture; VBIAS PSRR dominates over VIN PSRR for cleaner bias rejection. | Use Scenario: Generating isolated 1.70 V logic supply for optocoupler input stages in industrial programmable logic controllers operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: Local point-of-load regulator converting 3.3 V system rail to 1.70 V for digital isolator inputs. Use Value: 2.2 µF ceramic stability eliminates electrolytic capacitor aging concerns; thermal shutdown (+160 °C) prevents failure during extended overcurrent events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar very low dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8170BMT170TBG | Same WDFN6 package, 1.70 V fixed output, but uses PMOS pass transistor; 200 mV dropout @ 350 mA | Lacks separate VBIAS rail; less effective PSRR on bias-supply noise; not optimized for ultra-low-VIN operation | Choose when VBIAS rail is unavailable and higher dropout is acceptable |
| TPS7A2017PDBVR | 1.7 V fixed output, 300 mA, SOT-23-5 package; 170 mV dropout @ 300 mA; no VBIAS pin | Smaller footprint but lower current rating and no automotive qualification; max TA = +125 °C only (not Grade 1) | Choose for space-constrained non-automotive designs where AEC-Q100 is not required |
Compared with NCV8720BMT170TBG, NCV8170BMT170TBG trades VBIAS flexibility and lower dropout for simpler single-rail operation, while TPS7A2017PDBVR offers compact packaging at the expense of current capability, thermal robustness, and automotive compliance.
Availability
NCV8720BMT170TBG is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and industrial PLC digital I/O requiring stable component supply despite its discontinued status - inventory is secured for legacy program continuity.
Supply support for NCV8720BMT170TBG 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV8720 series belongs to onsemi's automotive-grade linear regulator product line, engineered specifically for AEC-Q100 Grade 1 reliability in noise-sensitive, space-constrained point-of-load applications such as camera sensors and FPGA I/O banks.
FAQ
Is NCV8720BMT170TBG still in production?
No, NCV8720BMT170TBG is marked as discontinued per onsemi's official documentation (Rev. 4, February 2026). However, Aetrix Electronics maintains secured legacy inventory with full traceability and supports ongoing production programs through coordinated lifecycle management - including alternative sourcing guidance and cross-reference validation for the NCV8720BMT170TBG.
What is the exact output voltage tolerance of NCV8720BMT170TBG over temperature?
The NCV8720BMT170TBG delivers ±2% output voltage accuracy across the full −40 °C to +125 °C ambient operating range, verified under specified test conditions (VBIAS ≥ VOUT + 1.4 V, VIN ≥ VOUT + 0.5 V, 0–350 mA load). At +25 °C, typical accuracy tightens to ±0.5%, as confirmed in the Electrical Characteristics table of the NCV8720BMT170TBG datasheet.
Can NCV8720BMT170TBG operate without connecting the BIAS pin?
No - the BIAS pin is mandatory for NCV8720BMT170TBG operation. It supplies power to all internal control circuitry, including the voltage reference and error amplifier. Leaving BIAS unconnected or below 2.4 V will trigger undervoltage lockout (UVLO), disabling regulation. The minimum functional VBIAS is (VOUT + 1.4 V) = 3.1 V for the NCV8720BMT170TBG, with 1.6 V UVLO threshold and 0.2 V hysteresis.
What package type and dimensions does NCV8720BMT170TBG use?
NCV8720BMT170TBG uses the WDFN6 2 mm × 2 mm package (Case 511BR) with 0.65 mm pitch and wettable flanks. The thermal pad must be soldered to the PCB ground plane to achieve the rated 65 °C/W junction-to-air thermal resistance. Pin 2 is N/C and must remain unconnected; pin numbering follows top-view orientation with OUT at pin 1 and IN at pin 6.
Does NCV8720BMT170TBG require an external feedback resistor network?
No - NCV8720BMT170TBG is a fixed-output voltage regulator with factory-programmed 1.70 V output. It contains no external feedback pins (e.g., FB or ADJ); the output voltage is trimmed internally during wafer sort and laser-trimmed in final test. No resistors, dividers, or compensation components are needed beyond the mandatory 2.2 µF ceramic output capacitor placed directly at the OUT pin.
NCV8720BMT170TBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 350mA
- Current - Output:
- 350mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 52dB ~ 25dB (10Hz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WDFN (2x2)
NCV8720BMT170TBG FAQ
1.How can I place an order for NCV8720BMT170TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8720BMT170TBG 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 NCV8720BMT170TBG reliable?
The price and inventory of NCV8720BMT170TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8720BMT170TBG is usually 5 days.
3.What payment methods are accepted for NCV8720BMT170TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8720BMT170TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8720BMT170TBG?
NCV8720BMT170TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8720BMT170TBG 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 NCV8720BMT170TBG?
For technical support, including NCV8720BMT170TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8720BMT170TBG requirements.
6.How does Aetrix verify that NCV8720BMT170TBG is sourced from the original manufacturer or authorized distributors?
All NCV8720BMT170TBG 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 NCV8720BMT170TBG meets industry standards.
7.What is the process for return or replacement of NCV8720BMT170TBG?
All NCV8720BMT170TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8720BMT170TBG, 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 NCV8720BMT170TBG part is unused and in its original packaging.
Return procedure for NCV8720BMT170TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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