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onsemi NCV8161BMX330TBG
- Part No.:
- NCV8161BMX330TBG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCV8161BMX330TBG.pdf
- Description:
- IC REG LINEAR 3.3V 450MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,971
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Product details
Overview
NCV8161BMX330TBG from onsemi is an automotive-grade ultra-low-noise, high-PSRR LDO regulator delivering 450 mA output current with 3.3 V fixed output, 225 mV dropout at full load (XDFN4), ±2% output accuracy over −40°C to +125°C, and 10 µVRMS output noise - designed for RF and analog power rails in parking camera modules and infotainment systems.
For engineers reviewing the NCV8161BMX330TBG datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 Grade 1 qualification, active-discharge–free operation (Version B), XDFN4 thermal performance (RJA = 198°C/W), and compatibility with 1 µF ceramic input/output capacitors.
Technical Context
The NCV8161BMX330TBG employs a PMOS pass transistor architecture enabling low dropout and inherent reverse-current blocking. Its bandgap reference and integrated soft-start ensure stable startup under varying load and line conditions without external compensation.
Unlike Version A, this variant omits active output discharge (RDIS = not implemented), simplifying system-level sequencing where controlled discharge is unnecessary. It maintains full protection features: current limiting (700 mA typ.), thermal shutdown (160°C trip), and short-circuit tolerance with unlimited duration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% over −40°C to +125°C - ensures stable biasing for 3.3 V logic, ADCs, and RF ICs without external feedback. |
| Max Output Current | 450 mA continuous - supports moderate-power analog/RF subsystems such as camera image signal processors or Bluetooth baseband ICs. |
| Dropout Voltage | 225 mV at 450 mA (XDFN4, VOUT = 3.3 V) - enables operation from 3.525 V input, ideal for single-cell Li-ion or 3.6 V supply rails. |
| PSRR | 98 dB at 1 kHz (20 mA load) - suppresses switching noise from adjacent DC-DC converters feeding sensitive RF/analog stages. |
| Output Noise | 10 µVRMS (10 Hz–100 kHz) - meets stringent noise requirements for PLLs, VCOs, and high-resolution audio/ADC circuits. |
| Quiescent Current | 18 µA typ. - extends battery life in always-on automotive modules like parking sensors or telematics wake-up circuits. |
| Enable Threshold | VENH = 1.2 V, VENL = 0.4 V - compatible with standard CMOS logic and microcontroller GPIOs without level-shifting. |
Pinout & Package
XDFN4 package (1.0 mm × 1.0 mm, 0.65 mm pitch), thermally enhanced with exposed pad (EPAD) tied to GND for improved power dissipation. Pin count: 4 active terminals + EPAD.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Regulated output voltage node | Delivers clean 3.3 V; requires 1 µF ceramic capacitor placed adjacent to pin for stability and transient response. |
| 2: GND | Power and signal reference ground | Primary return path; must be connected to low-impedance PCB ground plane, especially under EPAD for thermal conduction. |
| 3: EN | Logic-controlled enable input | Active-high enable: >1.2 V enables regulation; <0.4 V disables output and reduces IQ to 0.01 µA (typ.). No active discharge. |
| 4: IN | Unregulated input supply | Accepts 1.9–5.5 V; requires local 1 µF ceramic decoupling to minimize input impedance and suppress ripple coupling. |
| EPAD | Exposed thermal pad | Internally connected to GND; soldering to solid ground copper area reduces RJA by up to 30% and improves long-term reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise | 10 µVRMS (10 Hz–100 kHz) - preserves SNR in precision analog front-ends and RF receiver chains. |
| High PSRR | 98 dB @ 1 kHz - rejects noise from shared power domains, critical for co-located cellular/Wi-Fi/BT radios. |
| Automotive qualification | AEC-Q100 Grade 1 (−40°C to +125°C ambient), PPAP-capable - certified for under-hood and cabin infotainment use. |
| Capacitor flexibility | Stable with ≥0.7 µF X7R/X5R ceramic output caps - enables compact 0201/0402 placement and eliminates tantalum dependency. |
| Robust protection | Thermal shutdown (160°C), current limit (700 mA typ.), and short-circuit immunity - prevents failure during fault conditions without external circuitry. |
Applications
| Parking Camera Module | Wireless Handset Baseband |
|---|---|
Use Scenario: Powering image sensor and ISP in automotive rear-view cameras operating in stop/start cycles and wide temperature ranges. IC Role / Device Role / Timing Role: Primary 3.3 V analog/IO rail LDO supplying low-noise bias to CIS and video ADC. Use Value: 10 µVRMS noise prevents fixed-pattern noise in captured images; AEC-Q100 Grade 1 ensures reliability across −40°C cold cranking to +125°C engine bay heat. |
Use Scenario: Regulating power to Bluetooth/Wi-Fi baseband ICs in space-constrained portable devices with aggressive battery life targets. IC Role / Device Role / Timing Role: Standby-mode LDO providing always-on 3.3 V rail with 18 µA quiescent current and fast enable response. Use Value: 120 µs turn-on time enables rapid wake-from-sleep; 1 µF ceramic compatibility reduces BOM count and PCB area vs. legacy solutions. |
| Automotive Infotainment Head Unit | Industrial IoT Sensor Node |
Use Scenario: Supplying clean 3.3 V to audio codecs, touch controllers, and display interface ICs in head units subject to alternator ripple and load dump transients. IC Role / Device Role / Timing Role: Secondary LDO post-regulator filtering noise from primary buck converter outputs. Use Value: 98 dB PSRR at 1 kHz attenuates 100 mVPP alternator ripple to <100 µVPP, eliminating audible buzz in speakers and display artifacts. |
Use Scenario: Powering low-power wide-area wireless transceivers (Zigbee, LoRa) in battery-operated environmental monitoring nodes deployed outdoors. IC Role / Device Role / Timing Role: Main system LDO delivering regulated 3.3 V during transmit bursts and deep-sleep states. Use Value: 0.01 µA shutdown current extends 10-year battery life; 225 mV dropout allows operation down to 3.525 V, maximizing usable cell voltage range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8161AMX330TBG | Same package and output voltage, but includes active output discharge (280 Ω pull-down when disabled). | Required where fast VOUT discharge is needed for system-level power sequencing or safety compliance. | Select NCV8161AMX330TBG only if active discharge is mandated; otherwise NCV8161BMX330TBG offers simpler control and lower standby leakage. |
| TLD1130FXTMA1 | 3.3 V, 300 mA, AEC-Q100 Grade 1, but higher dropout (300 mV @ 300 mA) and higher noise (45 µVRMS). | Suitable for less noise-sensitive digital I/O rails, not RF/analog signal chains. | Choose TLD1130FXTMA1 only when cost is prioritized over noise/PSRR; NCV8161BMX330TBG delivers superior analog performance at comparable price. |
Compared with NCV8161AMX330TBG, NCV8161BMX330TBG eliminates discharge circuitry for lower quiescent current and simpler enable timing; versus TLD1130FXTMA1, it provides 33× lower noise and 4.5× better PSRR - critical for RF and high-fidelity analog designs.
Availability
NCV8161BMX330TBG is available at Aetrix Electronics and suitable for automotive infotainment systems, parking camera modules, and industrial IoT sensor nodes requiring stable component supply, AEC-Q100 compliance, and ultra-low-noise regulation.
Supply support for NCV8161BMX330TBG 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 specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications.
The NCV8161 series is part of onsemi's automotive-qualified analog portfolio, engineered specifically for noise-sensitive RF and analog subsystems in vehicles - emphasizing ultra-low noise, high PSRR, and robust thermal/overcurrent protection.
FAQ
What is the dropout voltage of NCV8161BMX330TBG at 450 mA load?
The dropout voltage of NCV8161BMX330TBG is 225 mV (typical) at 450 mA load and 3.3 V output, measured in the XDFN4 package. This value is specified under recommended operating conditions (TJ = 25°C, CIN = COUT = 1 µF ceramic). Dropout increases slightly at temperature extremes and higher loads, remaining ≤305 mV across the full −40°C to +125°C range.
Does NCV8161BMX330TBG include active output discharge?
No, NCV8161BMX330TBG does not include active output discharge. It is the Version B variant, explicitly defined in the datasheet as "Without Output Active Discharge Function." When disabled via the EN pin, the output floats; no internal discharge path is provided. This distinguishes it from Version A (e.g., NCV8161AMX330TBG), which integrates a 280 Ω discharge resistor.
What input and output capacitors are required for stable operation of NCV8161BMX330TBG?
NCV8161BMX330TBG requires a minimum 1 µF X7R or X5R ceramic capacitor on both input (CIN) and output (COUT), placed as close as possible to their respective pins. The device remains stable down to 0.7 µF effective capacitance (accounting for DC bias and temperature derating), making 0201/0402 case sizes viable. ESR should be <2 Ω; tantalum capacitors are not recommended due to high and temperature-variable ESR.
Is NCV8161BMX330TBG qualified for automotive applications?
Yes, NCV8161BMX330TBG is AEC-Q100 qualified (Grade 1: −40°C to +125°C ambient), PPAP-capable, and manufactured under automotive-specific process controls. The "NCV" prefix denotes compliance with automotive site and change control requirements. It is rated for use in engine compartments, infotainment systems, ADAS sensors, and other automotive subsystems demanding high reliability and extended temperature operation.
What is the quiescent current of NCV8161BMX330TBG under no-load and shutdown conditions?
NCV8161BMX330TBG draws 18 µA typical quiescent current under normal operation (IOUT = 0 mA, EN = high). In shutdown mode (EN < 0.4 V), it consumes only 0.01 µA (10 nA) typical, as confirmed in the Electrical Characteristics table. This ultra-low shutdown current supports long-term battery backup in always-on automotive modules.
NCV8161BMX330TBG 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.26V @ 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)
NCV8161BMX330TBG FAQ
1.How can I place an order for NCV8161BMX330TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8161BMX330TBG 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 NCV8161BMX330TBG reliable?
The price and inventory of NCV8161BMX330TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8161BMX330TBG is usually 5 days.
3.What payment methods are accepted for NCV8161BMX330TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8161BMX330TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8161BMX330TBG?
NCV8161BMX330TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8161BMX330TBG 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 NCV8161BMX330TBG?
For technical support, including NCV8161BMX330TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8161BMX330TBG requirements.
6.How does Aetrix verify that NCV8161BMX330TBG is sourced from the original manufacturer or authorized distributors?
All NCV8161BMX330TBG 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 NCV8161BMX330TBG meets industry standards.
7.What is the process for return or replacement of NCV8161BMX330TBG?
All NCV8161BMX330TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8161BMX330TBG, 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 NCV8161BMX330TBG part is unused and in its original packaging.
Return procedure for NCV8161BMX330TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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