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onsemi NCV8703SN28T1G
- Part No.:
- NCV8703SN28T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCV8703SN28T1G.pdf
- Description:
- IC REG LINEAR 2.8V 300MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,551
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Product details
Overview
NCV8703SN28T1G from onsemi is an automotive-grade ultra-low-noise, ultra-low-quiescent-current LDO voltage regulator delivering 300 mA output with 2.8 V fixed output, 180 mV typical dropout at full load, ±2% output accuracy, and 13 µVRMS noise (100 Hz–100 kHz). It powers noise-sensitive analog circuits in rear-view cameras and satellite radio receivers.
For engineers reviewing the NCV8703SN28T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, adaptive ground current circuit enabling 12 µA quiescent current at no load, EN-controlled active discharge, and stability with only 1 µF ceramic output capacitor.
Technical Context
The NCV8703SN28T1G employs a PMOS pass transistor with integrated soft-start, thermal shutdown (160°C trip), and foldback current limiting (typ. 490 mA). Its adaptive ground current architecture dynamically reduces bias current under light loads to sustain ultra-low IQ without compromising transient response.
It features internal UVLO (1.6 V turn-on threshold, 100 mV hysteresis), logic-compatible enable input (0.9 V high threshold, 0.4 V low threshold), and active output discharge via a 320 Ω internal resistor-ensuring fast, controlled turn-off for system-level power sequencing in automotive domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2% over load/line/temperature - ensures stable rail for 2.8 V imaging sensors or RF front-ends without external feedback. |
| Max Output Current | 300 mA continuous - supports moderate-power analog subsystems like camera ISP cores or GPS baseband ICs. |
| Quiescent Current | Typ. 12 µA at no load - enables >10-year battery life in always-on automotive modules (e.g., lane-change detectors). |
| Output Noise | 13 µVRMS (100 Hz–100 kHz) - eliminates need for external noise-bypass capacitors in precision ADC or audio codec supplies. |
| PSRR | 68 dB at 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding shared input rails. |
| Dropout Voltage | 180 mV typ. at 300 mA - allows operation down to 3.0 V input when powering from aging 3.3 V Li-ion or automotive 12 V buck-derived rails. |
| Enable Threshold | VEN_HI = 0.9 V, VEN_LO = 0.4 V - compatible with 1.8 V/3.3 V GPIOs and provides 2 mV built-in hysteresis to reject EN pin noise. |
Pinout & Package
NCV8703SN28T1G is packaged in TSOP−5 (Case 483), a 3.0 mm × 1.5 mm × 0.95 mm surface-mount package with exposed pad for thermal enhancement. Pin 2 is GND and serves as primary thermal path to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 2.0–5.5 V; requires ≥1 µF ceramic capacitor close to pin to suppress input ripple and trace inductance effects. |
| 2 (GND) | Power ground reference | Die ground tied to lead frame; soldering to large copper pour improves thermal resistance (JL = 129°C/W). |
| 3 (EN) | Logic-enable control input | Active-high; drives internal MOSFET gate; internal 110 nA pull-down ensures safe default-OFF state if left floating. |
| 4 (OUT) | Regulated output voltage | Delivers 2.8 V ±2%; requires ≥1 µF X7R/X5R ceramic capacitor placed adjacent to pin for stability and transient response. |
| 5 (N/C) | No-connect terminal | Internally unconnected; may be tied to GND to improve thermal dissipation but has no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise without bypass cap | 13 µVRMS (100 Hz–100 kHz) - enables clean power for RF receivers and high-resolution image sensors without extra BOM cost or board space. |
| Adaptive ground current | 12 µA IQ at zero load, rising to 200 µA at 300 mA - extends battery runtime in intermittent-duty automotive modules while maintaining fast load transient recovery. |
| Active output discharge | 320 Ω internal pull-down activated during shutdown - discharges output in <1 ms, preventing back-powering of downstream circuitry and ensuring deterministic power-down sequencing. |
| AEC-Q100 qualified | Grade 1 (−40°C to +125°C ambient), PPAP-capable - certified for safety-critical automotive applications including ADAS camera systems and infotainment head units. |
| Stable with minimal capacitance | Guaranteed stability with 0.1 µF–10 µF X7R/X5R ceramic COUT - simplifies layout and supports compact 0402 capacitor placement near OUT pin. |
Applications
| Rear-View Camera Power Supply | Satellite Radio Receiver LNA Bias |
|---|---|
Use Scenario: Powers CMOS image sensor and ISP in automotive rear-view camera modules operating from 3.3 V buck converter rail. IC Role / Device Role / Timing Role: Provides ultra-clean 2.8 V bias for analog front-end and pixel array, rejecting switching noise from adjacent DC-DC converters. Use Value: 13 µVRMS noise and 68 dB PSRR at 1 kHz prevent horizontal banding and SNR degradation in captured video. | Use Scenario: Supplies low-noise bias to low-noise amplifier (LNA) in SDR-based satellite radio tuners. IC Role / Device Role / Timing Role: Delivers regulated 2.8 V with minimal phase noise contribution to preserve RF signal integrity and adjacent-channel rejection. Use Value: Eliminates need for external RC filters, reducing bill-of-materials and PCB area while meeting ETSI EN 300 427 spectral purity requirements. |
| Electronic Mirror Display Driver | Lane Change Detection Sensor |
Use Scenario: Powers TFT-LCD source driver ICs in auto-dimming electronic mirrors requiring stable 2.8 V logic and analog rails. IC Role / Device Role / Timing Role: Regulates display interface voltage with ±2% accuracy across temperature and load, supporting consistent gamma correction and grayscale fidelity. Use Value: 180 mV dropout enables reliable operation even as input drops to 3.0 V during cold-crank events, preventing display flicker or blackouts. | Use Scenario: Supplies 2.8 V to radar signal processor and analog-to-digital converter in blind-spot detection modules. IC Role / Device Role / Timing Role: Provides always-on, ultra-low-IQ power to wake-up circuitry and microcontroller peripherals during vehicle sleep mode. Use Value: 12 µA quiescent current minimizes parasitic drain, supporting >10-year battery-backed operation per ISO 19453-2 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0528PDBVR | Lower IQ (1.5 µA), smaller X2SON package, but higher noise (25 µVRMS) and no AEC-Q100 qualification. | Targeted at consumer portable devices, not automotive environments. | Select only for non-automotive, ultra-low-power applications where noise and qualification are secondary. |
| NCP114AMX28T2G | Same AEC-Q100 Grade 1 rating and 2.8 V output, but higher dropout (300 mV @ 300 mA) and higher noise (22 µVRMS). | Acceptable for less noise-sensitive automotive subsystems with looser PSRR requirements. | Choose when thermal margin is constrained and lower dropout is not required, accepting trade-offs in noise and dynamic performance. |
Compared with TPS7A0528PDBVR and NCP114AMX28T2G, the NCV8703SN28T1G uniquely combines AEC-Q100 qualification, 13 µVRMS noise, and 180 mV dropout in TSOP-5 - making it the only option for automotive imaging and RF applications demanding simultaneous ultra-low noise, low dropout, and functional safety compliance.
Availability
NCV8703SN28T1G is available at Aetrix Electronics and suitable for rear-view camera modules, satellite radio receivers, electronic mirror displays, and lane change detection sensors requiring stable component supply across automotive production lifecycles.
Supply support for NCV8703SN28T1G 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 manufacturer specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The NCV8703 series belongs to onsemi's automotive-qualified LDO portfolio, engineered specifically for noise-sensitive ADAS and infotainment subsystems where ultra-low IQ, ultra-low noise, and AEC-Q100 reliability are mandatory.
FAQ
What is the maximum input voltage rating for the NCV8703SN28T1G?
The NCV8703SN28T1G has an absolute maximum input voltage rating of 6 V. Operation above 5.5 V is not recommended, as the device is specified for continuous operation from 2.0 V to 5.5 V. Exceeding 6 V risks permanent damage due to junction breakdown or ESD structure failure, per Table 2 of the datasheet.
Does the NCV8703SN28T1G require an external noise-bypass capacitor?
No, the NCV8703SN28T1G does not require an external noise-bypass capacitor. Its internal design achieves 13 µVRMS output noise (100 Hz–100 kHz) without CNR, as confirmed in the Features list and Applications Information section. This eliminates BOM cost and PCB area typically needed for traditional low-noise LDOs.
How does the enable pin (EN) behave during power-up and shutdown for the NCV8703SN28T1G?
When EN rises above 0.9 V, the NCV8703SN28T1G enables with internal soft-start, reaching 98% of 2.8 V in ~200 µs (COUT = 1 µF). When EN falls below 0.4 V, the device shuts down and activates internal 320 Ω active discharge, pulling OUT to GND within milliseconds - ensuring rapid, controlled turn-off without external circuitry.
Is the NCV8703SN28T1G stable with a 0402-sized 1 µF ceramic output capacitor?
Yes, the NCV8703SN28T1G is stable with a 0402 1 µF X7R/X5R ceramic capacitor. The datasheet specifies stability down to 0.1 µF effective capacitance, and Figure 49 confirms usable capacitance for 0402 packages at 2.8 V bias. Layout best practices (short traces, ground plane) are required to maintain ESR < 900 mΩ and ensure robust transient response.
What thermal derating applies to the NCV8703SN28T1G in a standard 1 oz FR4 PCB layout?
On a standard 1 oz FR4 PCB with 645 mm² copper area, the NCV8703SN28T1G (TSOP-5) has θJA = 241°C/W. Using Equation 1 (PDMAX = (TJ(MAX) − TA) / θJA), max power dissipation is ~0.41 W at 25°C ambient. At 85°C ambient, PDMAX drops to ~0.17 W - limiting usable output current to ~120 mA at 3.0 V input (per Equation 2).
NCV8703SN28T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 20 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:
- 5-TSOP
NCV8703SN28T1G FAQ
1.How can I place an order for NCV8703SN28T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8703SN28T1G 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 NCV8703SN28T1G reliable?
The price and inventory of NCV8703SN28T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8703SN28T1G is usually 5 days.
3.What payment methods are accepted for NCV8703SN28T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8703SN28T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8703SN28T1G?
NCV8703SN28T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8703SN28T1G 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 NCV8703SN28T1G?
For technical support, including NCV8703SN28T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8703SN28T1G requirements.
6.How does Aetrix verify that NCV8703SN28T1G is sourced from the original manufacturer or authorized distributors?
All NCV8703SN28T1G 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 NCV8703SN28T1G meets industry standards.
7.What is the process for return or replacement of NCV8703SN28T1G?
All NCV8703SN28T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8703SN28T1G, 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 NCV8703SN28T1G part is unused and in its original packaging.
Return procedure for NCV8703SN28T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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