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onsemi NCV8161BMX300TBG
- Part No.:
- NCV8161BMX300TBG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCV8161BMX300TBG.pdf
- Description:
- IC REG LINEAR 3V 450MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,306
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Product details
Overview
NCV8161BMX300TBG from onsemi is an automotive-grade ultra-low-noise, high-PSRR LDO regulator delivering 450 mA output current with 3.0 V fixed output, 225 mV dropout at full load (XDFN4), ±2% output accuracy over −40°C to +125°C, and 10 µVRMS integrated noise - optimized for RF and analog power rails in parking camera modules and infotainment systems.
For engineers reviewing the NCV8161BMX300TBG datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 Grade 1 qualification, absence of active discharge (distinguishing it from 'A'-suffix variants), XDFN4 thermal performance (RJA = 198°C/W), and compatibility with 1 µF ceramic input/output capacitors.
Technical Context
The NCV8161BMX300TBG employs a PMOS pass transistor architecture enabling low dropout and reverse-current protection via inherent body diode. Its bandgap reference and integrated soft-start ensure stable startup under varying load and line conditions without external components.
It features thermal shutdown (160°C trip, 140°C reset), current limiting (700 mA typ.), and enable-controlled operation with 0.4 V disable / 1.2 V enable thresholds. Unlike version 'A', this 'B' variant omits active output discharge, confirmed by datasheet ordering table and functional description.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% over −40°C to +125°C - ensures stable bias for sensitive RF ICs and ADCs without trimming. |
| Max Output Current | 450 mA continuous - supports multi-rail camera sensor SoCs and audio codecs in compact automotive modules. |
| Dropout Voltage | 225 mV at 450 mA (XDFN4, VOUT = 3.0 V) - enables operation from 3.225 V input, critical for 3.3 V rail margin in start-stop vehicles. |
| PSRR | 98 dB at 1 kHz (20 mA load) - suppresses switching noise from DC/DC converters feeding adjacent digital subsystems. |
| Output Noise | 10 µVRMS (10 Hz–100 kHz) - preserves SNR in analog front-ends like radar receivers and microphone preamps. |
| Quiescent Current | 18 µA typ. - extends battery life in always-on vehicle cameras during ignition-off monitoring. |
| Enable Threshold | VENH = 1.2 V, VENL = 0.4 V - compatible with standard 1.8 V/3.3 V GPIOs and supports clean sequencing with microcontrollers. |
Pinout & Package
XDFN4 package (1.0 mm × 1.0 mm, 0.65 mm pitch, exposed pad); thermally enhanced for automotive ambient up to +125°C. Exposed pad (EPAD) must be soldered to PCB ground plane for optimal thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Regulated output | Delivers 3.0 V to load; requires 1 µF ceramic capacitor placed adjacent to pin for stability and transient response. |
| 2: GND | Ground reference | Common return path for input, output, and enable; connects to EPAD for lowest thermal resistance. |
| 3: EN | Enable control input | Active-high logic: ≥1.2 V enables regulation; ≤0.4 V disables output and reduces supply current to 10 nA typ. |
| 4: IN | Input voltage supply | Accepts 1.9–5.5 V; internal PMOS structure blocks reverse current if VOUT > VIN. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 | Qualified for −40°C to +125°C ambient operation - meets automotive infotainment and ADAS environmental requirements. |
| No Active Discharge | Omits internal discharge FET (unlike 'A' variants) - prevents unintended discharge of downstream capacitance during disable, preserving state in powered-down subsystems. |
| 1 µF Ceramic Stability | Stable with 0201/0402 1 µF X7R/X5R MLCCs - eliminates need for larger, higher-ESR tantalum or electrolytic capacitors, reducing board area and cost. |
| Ultra-Low Noise | 10 µVRMS broadband noise - avoids degradation of RF receiver sensitivity and analog signal chain dynamic range. |
| High PSRR at 100 kHz | 48 dB at 100 kHz - mitigates noise coupling from high-frequency DC/DC converters commonly used in vehicle power architectures. |
Applications
| Parking Camera Module | Automotive Infotainment Head Unit |
|---|---|
Use Scenario: Powering image sensor, ISP, and video encoder in rear-view camera systems operating across vehicle battery voltage swings (5.5 V to 12 V). IC Role / Device Role / Timing Role: Primary 3.0 V analog and I/O rail LDO supplying low-noise bias to CMOS image sensors and SerDes interfaces. Use Value: 10 µVRMS noise and 98 dB PSRR prevent horizontal banding and color artifacts in live video feed under engine cranking conditions. |
Use Scenario: Providing clean 3.0 V supply to audio DACs, touchscreen controllers, and Bluetooth baseband ICs in head unit mainboard. IC Role / Device Role / Timing Role: Secondary LDO decoupling high-speed digital noise from precision analog subsystems within shared 3.3 V domain. Use Value: 225 mV dropout allows sustained 3.0 V output even when main 3.3 V rail dips to 3.225 V during cold-crank events. |
| Wireless Telematics Control Unit | ADAS Radar Signal Conditioning |
Use Scenario: Powering GNSS receiver, LTE modem, and CAN transceiver interface circuitry in telematics control units (TCUs). IC Role / Device Role / Timing Role: Isolated 3.0 V rail generator for RF-sensitive components, decoupled from noisy digital processors and power management ICs. Use Value: 18 µA quiescent current minimizes parasitic drain during vehicle sleep mode, extending battery backup runtime beyond ISO 16750-2 requirements. |
Use Scenario: Supplying low-noise 3.0 V to IF amplifiers, ADC drivers, and clock buffers in 77 GHz radar front-end modules. IC Role / Device Role / Timing Role: Precision analog rail LDO ensuring phase noise integrity for local oscillator distribution and ADC sampling clocks. Use Value: ±2% output accuracy over temperature maintains consistent gain calibration across −40°C to +125°C junction range, reducing factory recalibration frequency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8161AMX300TBG | Includes active output discharge (280 Ω pull-down on disable); otherwise identical electrical specs and package. | Required where rapid output discharge is needed after shutdown (e.g., to meet system-level power sequencing timing). | Select NCV8161AMX300TBG only if active discharge is mandated; NCV8161BMX300TBG is preferred when discharge is undesirable or externally managed. |
| TLD1121-30V | 300 mA rated, 3.0 V fixed, AEC-Q100 Grade 1, but higher 45 µVRMS noise and lower 70 dB PSRR at 1 kHz. | Suitable for less noise-sensitive digital I/O rails, not RF/analog signal chains requiring sub-15 µVRMS noise. | Choose TLD1121-30V only for cost-sensitive non-RF applications; NCV8161BMX300TBG remains superior for noise-critical analog/RF loads. |
Compared with NCV8161AMX300TBG, the NCV8161BMX300TBG avoids unintended discharge of downstream capacitance, improving system state retention; versus TLD1121-30V, it delivers 4.5× lower noise and 28 dB higher PSRR - essential for radar and camera signal integrity.
Availability
NCV8161BMX300TBG is available at Aetrix Electronics and suitable for automotive infotainment systems, parking camera modules, and wireless telematics control units requiring stable component supply with AEC-Q100 compliance and long-term lifecycle support.
Supply support for NCV8161BMX300TBG 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 NCV8161 series is part of onsemi's automotive power management portfolio, designed specifically to deliver ultra-low-noise, high-PSRR regulation for RF and analog circuits in harsh vehicular environments.
FAQ
What is the dropout voltage of the NCV8161BMX300TBG at 450 mA load?
The NCV8161BMX300TBG has a typical dropout voltage of 225 mV at 450 mA load when configured for 3.0 V output in the XDFN4 package. This value is measured under specified test conditions (TJ = +25°C, VOUT = 3.0 V) and ensures reliable regulation down to 3.225 V input - critical for maintaining 3.0 V rail integrity during automotive cold-crank events. The datasheet confirms this is specific to the XDFN4 variant and differs from TSOP−5 versions.
Does the NCV8161BMX300TBG include active output discharge?
No, the NCV8161BMX300TBG does not include active output discharge. It is the 'B'-suffix variant explicitly defined in the datasheet ordering table as "Without Output Active Discharge Function." Unlike the 'A'-suffix NCV8161AMX300TBG, this part leaves the output floating upon disable, making it suitable for applications where downstream capacitance must retain voltage for state preservation or controlled discharge via external circuitry.
What input and output capacitors are required for stable operation of the NCV8161BMX300TBG?
The NCV8161BMX300TBG is stable with 1 µF X7R or X5R ceramic capacitors on both input and output pins, placed as close as possible to the device. The datasheet specifies no minimum ESR requirement but recommends ESR < 2 Ω for COUT. Smaller case sizes (e.g., 0201) are acceptable provided DC bias derating is considered; tantalum capacitors are discouraged due to high and temperature-variable ESR.
Is the NCV8161BMX300TBG qualified for automotive use?
Yes, the NCV8161BMX300TBG is AEC-Q100 qualified (Grade 1) and PPAP capable, with guaranteed operation from −40°C to +125°C ambient temperature. Its NCV prefix denotes automotive-specific site and process controls, and it meets RoHS, Pb-free, and halogen-free requirements - fulfilling core compliance needs for front-end camera modules, infotainment systems, and telematics ECUs.
How does the enable pin function on the NCV8161BMX300TBG?
The EN pin on the NCV8161BMX300TBG is active-high: applying ≥1.2 V enables regulation, while ≤0.4 V disables the output and reduces quiescent current to 10 nA typ. An internal 200 nA pull-down ensures default disable when left unconnected. For always-on operation, EN may be tied directly to IN. This logic level compatibility supports direct interfacing with 1.8 V and 3.3 V microcontroller GPIOs without level-shifting.
NCV8161BMX300TBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XDFN 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.275V @ 450mA
- Current - Output:
- 450mA
- Current - Quiescent (Iq):
- 23 µA
- Current - Supply (Max):
- -
- PSRR:
- 91dB ~ 48dB (100Hz ~ 100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-XDFN (1x1)
NCV8161BMX300TBG FAQ
1.How can I place an order for NCV8161BMX300TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8161BMX300TBG 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 NCV8161BMX300TBG reliable?
The price and inventory of NCV8161BMX300TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8161BMX300TBG is usually 5 days.
3.What payment methods are accepted for NCV8161BMX300TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8161BMX300TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8161BMX300TBG?
NCV8161BMX300TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8161BMX300TBG 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 NCV8161BMX300TBG?
For technical support, including NCV8161BMX300TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8161BMX300TBG requirements.
6.How does Aetrix verify that NCV8161BMX300TBG is sourced from the original manufacturer or authorized distributors?
All NCV8161BMX300TBG 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 NCV8161BMX300TBG meets industry standards.
7.What is the process for return or replacement of NCV8161BMX300TBG?
All NCV8161BMX300TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8161BMX300TBG, 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 NCV8161BMX300TBG part is unused and in its original packaging.
Return procedure for NCV8161BMX300TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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