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onsemi NCV8703SN30T1G
- Part No.:
- NCV8703SN30T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCV8703SN30T1G.pdf
- Description:
- IC REG LINEAR 3V 300MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,755
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Product details
Overview
NCV8703SN30T1G from onsemi is a 3.0 V fixed-output, 300 mA ultra-low-noise LDO voltage regulator with 12 µA typical quiescent current, 13 µVRMS output noise (100 Hz–100 kHz), and 180 mV typical dropout at full load. It features active output discharge, internal soft-start, and AEC-Q100 qualification for automotive power rails in rear-view cameras and GPS receivers.
For engineers reviewing the NCV8703SN30T1G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ under light load, ±2% output accuracy across temperature, PSRR of 68 dB at 1 kHz, stability with 1 µF ceramic output capacitor, and TSOP-5 package thermal performance.
Technical Context
The NCV8703SN30T1G employs a PMOS pass transistor with adaptive ground current control to maintain 12 µA IQ at no load while scaling ground current only as needed under load. Its bandgap reference and error amplifier deliver ±2% output accuracy over −40°C to +125°C, with undervoltage lockout (UVLO) activating below 1.2 V and releasing above 1.9 V.
Internal protection includes thermal shutdown at 160°C (20°C hysteresis), current limiting at 490 mA (typ), and short-circuit current limiting at 520 mA (typ). The EN pin provides logic-level enable/disable with 0.4 V low threshold and 0.9 V high threshold, plus built-in 110 nA pull-down to ensure default-off behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% - ensures stable supply for 3.0 V logic, imaging sensors, and RF front-ends without external feedback. |
| Max Output Current | 300 mA - supports moderate-power analog/RF ICs such as GPS baseband processors or camera ISP cores. |
| Quiescent Current | 12 µA typ at IOUT = 0 mA - enables multi-year battery life in always-on automotive modules like lane-change detectors. |
| Output Noise | 13 µVRMS (100 Hz–100 kHz) - eliminates need for external noise-bypass capacitors in sensitive audio or RF receiver power domains. |
| Dropout Voltage | 180 mV typ at 300 mA - allows operation down to VIN = 3.18 V, critical for Li-ion battery systems operating near end-of-discharge. |
| PSRR | 68 dB at 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding shared input rails. |
| Enable Threshold | VEN_HI = 0.9 V, VEN_LO = 0.4 V - compatible with 1.8 V/3.3 V GPIOs and provides 0.5 V hysteresis against noise-induced toggling. |
| Stability | Stable with ≥1 µF X7R/X5R ceramic COUT - simplifies layout by eliminating ESR requirements and enabling 0402-size capacitors. |
Pinout & Package
NCV8703SN30T1G is packaged in TSOP-5 (Case 483), a 3.0 mm × 1.5 mm × 0.95 mm surface-mount package with exposed thermal pad connected to GND. Pin 2 is GND for optimal heat dissipation into PCB copper planes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Accepts 2.0–5.5 V input; requires ≥1 µF ceramic capacitor close to pin for transient immunity and stability. |
| 2 (GND) | Power ground | Die ground connection via lead frame; soldered to large PCB copper area for thermal management (θJA = 241°C/W). |
| 3 (EN) | Enable control input | Logic-high (>0.9 V) enables regulation; logic-low (<0.4 V) disables output and activates 320 Ω active discharge path to GND. |
| 4 (N/C) | No-connect | Internally unconnected; must be left floating or tied to GND for improved thermal conduction (not electrically required). |
| 5 (OUT) | Regulated output | Delivers 3.0 V ±2% to load; requires ≥1 µF ceramic capacitor placed adjacent to pin for loop stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 12 µA typ at zero load - extends battery runtime in always-on automotive modules without compromising start-up speed. |
| Active output discharge | 320 Ω internal pull-down activated during shutdown - ensures rapid, controlled VOUT decay for system-level sequencing and fault recovery. |
| Adaptive ground current | Ground current scales from 12 µA (no load) to 200 µA (300 mA) - minimizes wasted power while maintaining fast transient response. |
| Internal soft-start | Monotonic 200 µs turn-on time to 98% VOUT - prevents inrush current spikes that could destabilize shared input rails or trigger upstream OCP. |
| AEC-Q100 qualification | Qualified per Grade 1 (−40°C to +125°C) with PPAP capability - meets automotive functional safety requirements for camera and ADAS subsystems. |
| Low-noise architecture | 13 µVRMS noise without external bypass cap - eliminates BOM cost and board space for noise-filtering components in RF/analog signal chains. |
Applications
| Rear-View Camera Power | Satellite Radio Receiver |
|---|---|
Use Scenario: Powers CMOS image sensor and video processor in automotive backup camera modules operating from 12 V battery via intermediate DC-DC stage. IC Role / Device Role / Timing Role: Provides clean, low-noise 3.0 V rail isolated from switching noise generated by buck converter powering digital logic. Use Value: 13 µVRMS noise and 68 dB PSRR prevent visible noise artifacts in captured video; ±2% accuracy ensures consistent sensor ADC reference. | Use Scenario: Supplies low-noise bias to SAW filters and LNA stages in satellite radio tuners mounted in vehicle head units. IC Role / Device Role / Timing Role: Delivers ultra-stable 3.0 V supply to RF front-end components requiring minimal phase noise and spurious emissions. Use Value: Eliminates need for external noise-bypass capacitor, reducing component count and PCB area; 180 mV dropout enables operation during cold-crank battery dips. |
| GPS/GLONASS Module | Lane Change Detection Sensor |
Use Scenario: Powers GNSS baseband processor and RF frontend in compact automotive navigation modules powered by 3.3 V or 5 V rails. IC Role / Device Role / Timing Role: Regulates precise 3.0 V supply for correlator circuits and crystal oscillator buffers where supply ripple directly impacts timing jitter. Use Value: 12 µA IQ enables >5-year battery backup life; 100 Hz–100 kHz noise floor avoids degradation of carrier-phase tracking accuracy. | Use Scenario: Supplies always-on power to radar-based blind-spot monitoring sensors in door mirrors or fenders. IC Role / Device Role / Timing Role: Provides standby-regulated 3.0 V rail with active discharge to meet ISO 16750-2 power cycling requirements. Use Value: Active discharge ensures VOUT decays within 10 ms after EN deassertion, satisfying automotive wake-up latency specs; AEC-Q100 Grade 1 ensures reliability at 125°C junction temp. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0530PDBVR | Lower IQ (250 nA), but higher noise (25 µVRMS) and lower PSRR (55 dB @ 1 kHz); 200 mA max output. | Preferred for ultra-low-power IoT sensors; unsuitable for RF/audio due to higher noise and lower PSRR. | Select when battery life dominates over signal integrity; avoid for GPS/camera where 13 µVRMS is required. |
| NCP163AMX300TBG | Similar 3.0 V output and 300 mA rating, but higher IQ (45 µA), higher noise (22 µVRMS), and no active discharge. | Cost-optimized alternative for non-automotive consumer electronics; lacks AEC-Q100 qualification. | Use in industrial or consumer designs where automotive qualification and fast discharge are not required. |
Compared with TPS7A0530PDBVR and NCP163AMX300TBG, the NCV8703SN30T1G uniquely combines automotive qualification, 13 µVRMS noise, active discharge, and 12 µA IQ - making it the only option meeting full requirements for safety-critical automotive imaging and RF subsystems.
Availability
NCV8703SN30T1G is available at Aetrix Electronics and suitable for automotive rear-view cameras, satellite radio receivers, and GPS modules requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for NCV8703SN30T1G 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 NCV8703 series is designed specifically for automotive-grade ultra-low-noise, ultra-low-IQ power regulation in safety-critical vision and RF systems - emphasizing AEC-Q100 qualification, thermal robustness, and noise immunity.
FAQ
What is the maximum input voltage rating for the NCV8703SN30T1G?
The NCV8703SN30T1G has an absolute maximum input voltage rating of 6 V. Operation beyond this limit risks permanent damage. For reliable continuous operation, the recommended input range is 2.0 V to 5.5 V - ensuring proper regulation, UVLO margin, and thermal safety across automotive temperature extremes.
Does the NCV8703SN30T1G require an external noise-bypass capacitor?
No, the NCV8703SN30T1G does not require an external noise-bypass capacitor. Its internal architecture achieves 13 µVRMS output noise (100 Hz–100 kHz) without one - verified across all output voltages and load conditions in the official datasheet. This eliminates BOM cost, PCB area, and potential instability from improper capacitor selection.
How does the active discharge function work in the NCV8703SN30T1G?
When the EN pin voltage falls below 0.4 V, the NCV8703SN30T1G disables regulation and activates an internal 320 Ω pull-down transistor between OUT and GND. This discharges the output capacitor rapidly - typically achieving <100 mV VOUT within milliseconds - enabling precise power sequencing and meeting automotive wake-up timing requirements.
Can the NCV8703SN30T1G operate with a 1 µF ceramic output capacitor?
Yes, the NCV8703SN30T1G is explicitly designed to remain stable with a minimum 1 µF X7R or X5R ceramic output capacitor. The datasheet confirms stability across temperature, voltage, and load conditions with this value - no ESR requirement or additional compensation network is needed, simplifying design and reducing bill-of-materials.
Is the NCV8703SN30T1G qualified for automotive applications?
Yes, the NCV8703SN30T1G carries the NCV prefix indicating automotive qualification. It is AEC-Q100 Grade 1 qualified (−40°C to +125°C ambient), PPAP-capable, and manufactured in onsemi's certified automotive facilities - making it suitable for use in rear-view cameras, GPS modules, and other safety-relevant vehicle subsystems.
NCV8703SN30T1G 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):
- 3V
- 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
NCV8703SN30T1G FAQ
1.How can I place an order for NCV8703SN30T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8703SN30T1G 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 NCV8703SN30T1G reliable?
The price and inventory of NCV8703SN30T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8703SN30T1G is usually 5 days.
3.What payment methods are accepted for NCV8703SN30T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8703SN30T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8703SN30T1G?
NCV8703SN30T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8703SN30T1G 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 NCV8703SN30T1G?
For technical support, including NCV8703SN30T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8703SN30T1G requirements.
6.How does Aetrix verify that NCV8703SN30T1G is sourced from the original manufacturer or authorized distributors?
All NCV8703SN30T1G 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 NCV8703SN30T1G meets industry standards.
7.What is the process for return or replacement of NCV8703SN30T1G?
All NCV8703SN30T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8703SN30T1G, 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 NCV8703SN30T1G part is unused and in its original packaging.
Return procedure for NCV8703SN30T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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