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onsemi NCV8720BMT105TBG
- Part No.:
- NCV8720BMT105TBG
- Manufacturer:
- onsemi
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
NCV8720BMT105TBG.pdf
- Description:
- IC REG LINEAR 1.05V 350MA 6WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,460
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Product details
Overview
NCV8720BMT105TBG from onsemi is a 350 mA very low dropout (VLDO) linear voltage regulator with NMOS pass transistor and separate VBIAS supply, delivering a fixed 1.05 V 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 post-regulation in FPGA/DSP power rails and automotive infotainment systems.
For engineers reviewing the NCV8720BMT105TBG datasheet, pinout, applications, or equivalent options, key selection criteria include dual-rail operation (VIN/VBIAS), wettable-flank WDFN6 package compatibility with automated optical inspection, thermal shutdown at +160 °C, and PSRR >65 dB at 1 kHz on both input rails.
Technical Context
The NCV8720BMT105TBG implements a dual-supply NMOS-based LDO architecture: VIN powers the pass element while VBIAS independently supplies internal control circuitry, enabling stable regulation even when VIN approaches VOUT. This decoupling allows ultra-low dropout and reduces sensitivity to output capacitor ESR variations.
It integrates soft-start with monotonic VOUT rise, undervoltage lockout on VBIAS (1.6 V threshold with 0.2 V hysteresis), and thermal shutdown with automatic recovery. The enable pin supports direct connection to VIN or VBIAS when unused, and shutdown current is just 0.5 µA typical at −40 °C to +85 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.05 V - factory-programmed, no external feedback required; eliminates resistor network errors and layout sensitivity. |
| Max Output Current | 350 mA continuous - sufficient for core logic rails of mid-tier FPGAs and application processors without derating at +125 °C ambient. |
| VIN Dropout Voltage | 110 mV typical at 350 mA - enables operation with VIN as low as 1.16 V, critical for battery-powered systems near end-of-discharge. |
| VBIAS Dropout Voltage | 1.15 V typical at 350 mA - requires VBIAS ≥ 2.2 V minimum for stable 1.05 V output, supporting common 2.5 V/3.3 V bias rails. |
| Output Accuracy | ±2% over −40 °C to +125 °C - meets AEC-Q100 Grade 1 requirements for automotive under-hood applications. |
| PSRR (VIN, 1 kHz) | 65 dB - suppresses switching noise from upstream DC/DC converters, preserving signal integrity in camera sensor and ADC power domains. |
| Bias Input Current | 80 µA typical - minimizes quiescent power draw from auxiliary bias rail, extending runtime in always-on subsystems. |
| Thermal Shutdown | +160 °C activation / +140 °C reset - provides robust overtemperature protection with hysteresis to prevent oscillation during thermal stress. |
Pinout & Package
NCV8720BMT105TBG is housed in a 2 mm × 2 mm WDFN6 package (Case 511BR) with wettable flanks for enhanced solder-joint inspection. The exposed thermal pad must be soldered to the PCB ground plane to achieve RJA = 65 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output | Delivers stable 1.05 V; connects directly to load with minimal trace inductance to maintain PSRR and transient response. |
| 2 - N/C | No connect | Not internally bonded; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress. |
| 3 - EN | Enable control | Active-high logic input (1.1 V threshold); ties to VIN or VBIAS if always-on; draws only 0.3 µA max when enabled. |
| 4 - BIAS | Bias supply input | Powers internal reference and control circuits; monitored by UVLO; requires ≥2.4 V and stable decoupling (≥0.1 µF ceramic). |
| 5 - GND | Ground reference | Common return for IN, OUT, BIAS, and EN; must be low-impedance connection to thermal pad and system ground plane. |
| 6 - IN | Main input supply | Feeds NMOS pass transistor; accepts 0.8–5.5 V; requires ≥1.16 V for regulation at 350 mA due to 110 mV dropout. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail NMOS architecture | Separates power path (VIN→OUT) from control logic (VBIAS→internal circuits), enabling lower dropout and improved PSRR vs. PMOS LDOs. |
| Built-in soft-start | Monotonic VOUT rise limits inrush current to ≤100 mA + ILOAD, preventing input rail collapse during power-up sequencing. |
| Stable with 2.2 µF ceramic output cap | Eliminates need for large tantalum or electrolytic capacitors; supports compact, high-reliability designs with zero ESR dependency. |
| AEC-Q100 Grade 1 qualified | Validated for −40 °C to +125 °C ambient operation with PPAP capability - suitable for automotive ADAS domain controllers and body ECUs. |
| Wettable flank WDFN6 package | Enables automated optical inspection (AOI) of solder joints without X-ray, improving manufacturing yield and field reliability in high-volume automotive production. |
Applications
| Automotive Infotainment SoC Core Rail | FPGA I/O Bank Power Supply |
|---|---|
|
Use Scenario: Powering 1.05 V I/O banks of automotive-grade FPGA in head-unit display controller, operating continuously across temperature extremes. IC Role / Device Role / Timing Role: Post-regulator providing clean, low-noise voltage after a primary buck converter; ensures signal integrity for high-speed LVDS interfaces. Use Value: 65 dB PSRR at 1 kHz suppresses switching ripple from upstream 2 MHz DC/DC, reducing bit error rate in video data lanes. |
Use Scenario: Delivering tightly regulated 1.05 V to configurable I/O banks in industrial FPGA used for real-time motor control. IC Role / Device Role / Timing Role: Low-dropout linear regulator maintaining voltage stability during dynamic I/O switching transients. Use Value: 110 mV dropout enables operation from 1.2 V intermediate rail, minimizing power loss and heat generation in space-constrained enclosures. |
| Camera Sensor Analog Front-End | Automotive Radar DSP Core Supply |
|
Use Scenario: Supplying analog pixel array and column ADC circuitry in rear-view camera module, where noise directly impacts image SNR. IC Role / Device Role / Timing Role: Ultra-low-noise (40 µVRMS) bias rail generator decoupled from noisy digital domains. Use Value: 40 µVRMS integrated noise over 10 Hz–100 kHz preserves analog signal fidelity, avoiding visible banding in low-light video. |
Use Scenario: Providing 1.05 V core voltage to 77 GHz radar DSP in ADAS ECU, subject to engine-bay thermal cycling and EMI. IC Role / Device Role / Timing Role: AEC-Q100 Grade 1 LDO with thermal shutdown and UVLO ensuring fail-safe operation during cold cranking or overheating events. Use Value: ±2% output accuracy over −40 °C to +125 °C maintains DSP timing margins and prevents functional safety violations per ISO 26262 ASIL-B. |
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 |
|---|---|---|---|
| TPS7A05105PDBVR | Single-rail (VIN-only) 1.05 V LDO; 170 mV dropout at 300 mA; no VBIAS input; 25 µVRMS noise. | Lacks dual-rail flexibility; unsuitable where VBIAS is available and VIN is constrained near VOUT. | Select when board space is tighter and bias rail sharing is not required; verify PSRR meets system noise floor. |
| NCP1117ST105T3G | 1.05 V fixed-output; 1.2 V dropout at 800 mA; PMOS topology; TO-220/SOT-223 package; no wettable flanks. | Higher dropout and larger footprint; lacks AEC-Q100 qualification and automotive temperature range. | Consider only for non-automotive industrial prototypes where cost outweighs thermal and size constraints. |
Compared with TPS7A05105PDBVR and NCP1117ST105T3G, the NCV8720BMT105TBG uniquely supports dual-rail operation for ultra-low-VIN scenarios, delivers automotive-grade reliability in a compact wettable-flank package, and achieves superior PSRR-making it optimal for noise-sensitive, thermally demanding automotive electronics.
Availability
NCV8720BMT105TBG is available at Aetrix Electronics and suitable for automotive infotainment systems, FPGA power management, and radar DSP core supplies requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for NCV8720BMT105TBG 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 is part of onsemi's automotive-qualified power management portfolio, engineered specifically for low-noise, high-accuracy point-of-load regulation in safety-critical vehicle subsystems.
FAQ
What is the nominal output voltage of the NCV8720BMT105TBG?
The NCV8720BMT105TBG is factory-programmed to deliver a fixed 1.05 V output voltage with ±2% accuracy over the full −40 °C to +125 °C operating temperature range. This value is laser-trimmed during production and does not require external feedback components, ensuring consistent performance across units and eliminating resistor tolerance errors in the design.
Does the NCV8720BMT105TBG require an external bias supply, and what are its voltage requirements?
Yes, the NCV8720BMT105TBG requires a separate VBIAS supply connected to Pin 4. Per the datasheet, VBIAS must be between (VOUT + 1.4 V) and 5.5 V - i.e., ≥2.45 V for the 1.05 V output - and is monitored by an internal UVLO circuit with 1.6 V turn-on threshold. This dual-rail architecture enables ultra-low dropout while isolating control circuitry from noisy input rails.
Can the NCV8720BMT105TBG be used without connecting the EN pin?
Yes, the NCV8720BMT105TBG can operate without external enable control: the EN pin (Pin 3) may be tied directly to VIN or VBIAS to maintain permanent operation. When enabled this way, the device draws only ~20 µA per volt of nominal output from VIN - approximately 21 µA for the 1.05 V output - making it suitable for always-on subsystems with minimal quiescent overhead.
What package type and thermal characteristics does the NCV8720BMT105TBG have?
The NCV8720BMT105TBG uses the WDFN6 2 mm × 2 mm package (Case 511BR) with wettable flanks for AOI-compatible solder joints. Its thermal resistance is RJA = 65 °C/W when mounted on a standard high-K 3″ × 3″ multilayer PCB with dedicated 125 mm² copper area. The exposed thermal pad must be soldered to the ground plane to achieve this rating and ensure reliable operation at full 350 mA load in +125 °C ambient.
Is the NCV8720BMT105TBG suitable for automotive applications, and what qualifications does it hold?
Yes, the NCV8720BMT105TBG carries the NCV prefix indicating compliance with automotive-specific quality and change-control requirements. It is AEC-Q100 qualified (Grade 1: −40 °C to +125 °C ambient), PPAP-capable, and manufactured in IATF 16949-certified facilities. These qualifications confirm its suitability for under-hood and cabin applications including ADAS, infotainment, and body control modules.
NCV8720BMT105TBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.05V
- 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)
NCV8720BMT105TBG FAQ
1.How can I place an order for NCV8720BMT105TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8720BMT105TBG 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 NCV8720BMT105TBG reliable?
The price and inventory of NCV8720BMT105TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8720BMT105TBG is usually 5 days.
3.What payment methods are accepted for NCV8720BMT105TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8720BMT105TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8720BMT105TBG?
NCV8720BMT105TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8720BMT105TBG 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 NCV8720BMT105TBG?
For technical support, including NCV8720BMT105TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8720BMT105TBG requirements.
6.How does Aetrix verify that NCV8720BMT105TBG is sourced from the original manufacturer or authorized distributors?
All NCV8720BMT105TBG 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 NCV8720BMT105TBG meets industry standards.
7.What is the process for return or replacement of NCV8720BMT105TBG?
All NCV8720BMT105TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8720BMT105TBG, 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 NCV8720BMT105TBG part is unused and in its original packaging.
Return procedure for NCV8720BMT105TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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