My Inquiry
My Account
onsemi NCV8705MW33TCG
- Part No.:
- NCV8705MW33TCG
- Manufacturer:
- onsemi
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
NCV8705MW33TCG.pdf
- Description:
- IC REG LINEAR 3.3V 500MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,054
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCV8705MW33TCG from onsemi is an automotive-grade ultra-low-noise, ultra-low-quiescent-current LDO regulator delivering 500 mA output with 230 mV typical dropout at full load, ±2% output accuracy over line/load/temperature, and 12 µVRMS integrated noise (100 Hz–100 kHz). It operates from 2.5 V to 5.5 V input and provides a fixed 3.3 V output - ideal for powering RF receivers, imaging sensors, and audio processors in ADAS and infotainment systems.
For engineers reviewing the NCV8705MW33TCG datasheet, pinout, applications, or equivalent options, this page delivers verified package mapping (DFN8 3×3 mm), validated thermal performance (θJA = 92.6°C/W), confirmed enable logic thresholds (VEN_HI = 0.9 V, VEN_LO = 0.4 V), and real-world transient response data under 10 mA–500 mA load steps.
Technical Context
The NCV8705MW33TCG integrates an adaptive ground current circuit that reduces quiescent current to 13 µA at no load while maintaining regulation, and features internal soft-start to limit inrush current during turn-on. Its bandgap reference (0.8 V) feeds a precision error amplifier driving a low-RDS(on) PMOS pass transistor.
Protection includes thermal shutdown (TSD = 160°C, 20°C hysteresis), current limiting (510–950 mA), undervoltage lockout (UVLO rising threshold = 1.6 V), and active output discharge for fast turn-off. Stability is guaranteed with only a 1 µF ceramic output capacitor - no noise-bypass cap required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% - ensures stable supply for 3.3 V logic, ADC references, and RF front-ends without external feedback resistors. |
| Max Output Current | 500 mA - supports moderate-power analog subsystems like camera ISPs or radar signal chains. |
| Dropout Voltage | 230 mV typical at 500 mA - enables operation down to VIN = 3.53 V, critical for battery-powered automotive modules. |
| Quiescent Current | 13 µA typical at no load - extends battery life in always-on vehicle telematics and ECU wake-up circuits. |
| Output Noise | 12 µVRMS (100 Hz–100 kHz) - eliminates need for external noise filters when powering sensitive RF receivers or high-resolution ADCs. |
| PSRR | 71 dB at 1 kHz - suppresses ripple from noisy DC-DC pre-regulators feeding noise-sensitive analog blocks. |
| Enable Threshold | VEN_HI = 0.9 V, VEN_LO = 0.4 V - compatible with standard 3.3 V GPIOs and supports clean sequencing in multi-rail systems. |
Pinout & Package
NCV8705MW33TCG is packaged in a wettable flank DFN8 (3×3 mm, Case 506DB), optimized for automated optical inspection (AOI) and thermal performance (θJB = 35.1°C/W). Exposed pad must be soldered to PCB ground plane for heat dissipation and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Regulated output | Delivers stable 3.3 V; requires ≥1 µF X7R/X5R ceramic capacitor placed adjacent to pin for stability and transient response. |
| GND (Pin 4) | Power ground | Primary return path; exposed thermal pad must be connected to PCB ground plane for thermal management and noise control. |
| EN (Pin 5) | Enable control | Logic-high (>0.9 V) enables regulation; logic-low (<0.4 V) disables output and activates active discharge (fast turn-off). |
| IN (Pin 8) | Input supply | Accepts 2.5–5.5 V; requires ≥1 µF ceramic decoupling capacitor near pin to suppress input trace inductance effects. |
| N/C (Pins 2,3,6,7) | No-connect | Internally unconnected; may be tied to GND to improve thermal conduction but not required for function. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise (12 µVRMS) | Enables direct powering of RF receivers and high-precision analog sensors without external filtering or bypass caps. |
| Adaptive ground current | Reduces IQ to 13 µA at no load while maintaining regulation - critical for low-power automotive standby modes. |
| Stable with 1 µF ceramic COUT | Eliminates need for large or specialized capacitors, reducing BOM cost and board space in space-constrained modules. |
| Active output discharge | Forces rapid VOUT decay upon disable - prevents back-powering of downstream circuitry and meets ASIL-B timing requirements. |
| AEC-Q100 Grade 1 qualified | Rated for −40°C to +125°C junction temperature - validated for under-hood and infotainment applications per automotive reliability standards. |
Applications
| ADAS Camera Module | Automotive Infotainment SoC Core Supply |
|---|---|
Use Scenario: Powering CMOS image sensor and ISP in a rear-view camera system operating in stop/start conditions. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying analog front-end and digital interface rails with ultra-low noise and fast load transient recovery. Use Value: 12 µVRMS noise prevents image sensor pattern noise; 230 mV dropout allows operation during cold-crank (VIN ≥ 3.53 V); AEC-Q100 qualification ensures field reliability. |
Use Scenario: Providing clean 3.3 V core voltage to application processor I/O and memory interfaces in head-unit designs. IC Role / Device Role / Timing Role: Secondary LDO post-regulator decoupling switching DC-DC output to meet SoC power integrity specs. Use Value: 71 dB PSRR at 1 kHz attenuates DC-DC ripple; ±2% accuracy maintains timing margin across temperature; EN pin enables coordinated power sequencing. |
| Telematics Control Unit (TCU) | Automotive Audio DSP Power |
Use Scenario: Supplying 3.3 V to LTE modem baseband and GNSS receiver in always-on vehicle connectivity modules. IC Role / Device Role / Timing Role: Low-IQ LDO enabling extended battery backup during ignition-off periods while maintaining GPS lock. Use Value: 13 µA quiescent current minimizes parasitic drain; active discharge ensures safe modem reset; wettable flank package supports AOI in high-volume SMT lines. |
Use Scenario: Delivering ultra-clean 3.3 V to audio codec and DSP in premium car audio amplifiers. IC Role / Device Role / Timing Role: Dedicated low-noise LDO for analog audio paths, isolating sensitive DACs and op-amps from digital supply noise. Use Value: 12 µVRMS noise avoids audible hiss; 500 mA output supports multi-channel processing; thermal shutdown protects against enclosure overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | Lower max current (300 mA), higher dropout (300 mV @ 300 mA), no AEC-Q100 qualification. | Suitable for non-automotive portable electronics; lacks automotive temp range and qualification. | Select if cost sensitivity outweighs automotive compliance and 500 mA requirement. |
| NCP114AMX33TBG | Higher quiescent current (25 µA typ), lower PSRR (60 dB @ 1 kHz), same 3.3 V fixed output and DFN6 package. | Used in industrial sensors and consumer infotainment; less suitable for RF-sensitive or ultra-low-power automotive use. | Choose when footprint compatibility with WDFN6 is mandatory and 13 µA IQ is not required. |
Compared with TLV73333PDBVR and NCP114AMX33TBG, the NCV8705MW33TCG uniquely combines AEC-Q100 Grade 1 qualification, 500 mA output, 13 µA IQ, and 12 µVRMS noise - making it the only option qualified for safety-critical, noise-sensitive, and always-on automotive subsystems requiring long-term reliability at 125°C junction temperature.
Availability
NCV8705MW33TCG is available at Aetrix Electronics and suitable for ADAS camera modules, automotive infotainment systems, and telematics control units requiring stable component supply, automotive-grade traceability, and long-lifecycle support.
Supply support for NCV8705MW33TCG 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 focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications, with leadership in power management, analog, and sensing technologies.
The NCV8705MW33TCG belongs to onsemi's automotive-qualified LDO portfolio, designed specifically to meet stringent noise, efficiency, and reliability demands of next-generation vehicle electronics - including ADAS, electrification, and digital cockpit systems.
FAQ
What is the maximum input voltage rating for the NCV8705MW33TCG?
The NCV8705MW33TCG has an absolute maximum input voltage of 6 V. Operation beyond this risks permanent damage. The recommended operating input range is 2.5 V to 5.5 V, ensuring optimal performance across automotive battery variations including cold-crank (down to ~6.5 V nominal) and load-dump transients handled by upstream protection.
Does the NCV8705MW33TCG require an external noise-bypass capacitor?
No, the NCV8705MW33TCG does not require an external noise-bypass capacitor. Its integrated 12 µVRMS noise performance (100 Hz–100 kHz) is achieved internally - verified across all operating conditions in the datasheet. Adding a bypass cap provides no measurable improvement and may degrade stability if improperly selected.
How does the adaptive ground current feature work in the NCV8705MW33TCG?
The NCV8705MW33TCG uses an Adaptive Ground Current circuit that dynamically scales bias currents in the internal error amplifier and reference stage based on load. At no load, ground current drops to 13 µA; at 500 mA, it rises to 260 µA - optimizing efficiency across the full load range without sacrificing regulation accuracy or transient response.
Is the NCV8705MW33TCG pin-compatible with other NCV8705 variants?
No - the NCV8705MW33TCG (fixed 3.3 V, DFN8) is not pin-compatible with adjustable versions (e.g., NCV8705MWADJTCG) or WDFN6 variants (e.g., NCV8705MW33TCTG). Pin 3 in DFN8 is N/C; in WDFN6 it is ADJ. Layout reuse requires verification against the specific variant's pinout table in the datasheet.
What thermal derating applies to the NCV8705MW33TCG at 125°C ambient?
At TA = 125°C, the NCV8705MW33TCG's maximum continuous output current is reduced to ~320 mA (based on θJA = 92.6°C/W and TJ(MAX) = 125°C). Derating curves in Figure 14 confirm VDO increases linearly with temperature - design must ensure junction temperature remains ≤125°C under worst-case load and airflow conditions.
NCV8705MW33TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-VDFN 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):
- -
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 25 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Soft Start, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x3)
NCV8705MW33TCG FAQ
1.How can I place an order for NCV8705MW33TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8705MW33TCG 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 NCV8705MW33TCG reliable?
The price and inventory of NCV8705MW33TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8705MW33TCG is usually 5 days.
3.What payment methods are accepted for NCV8705MW33TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8705MW33TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8705MW33TCG?
NCV8705MW33TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8705MW33TCG 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 NCV8705MW33TCG?
For technical support, including NCV8705MW33TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8705MW33TCG requirements.
6.How does Aetrix verify that NCV8705MW33TCG is sourced from the original manufacturer or authorized distributors?
All NCV8705MW33TCG 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 NCV8705MW33TCG meets industry standards.
7.What is the process for return or replacement of NCV8705MW33TCG?
All NCV8705MW33TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8705MW33TCG, 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 NCV8705MW33TCG part is unused and in its original packaging.
Return procedure for NCV8705MW33TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCV8705MW33TCG Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
