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onsemi NCV8703MX28TCG
- Part No.:
- NCV8703MX28TCG
- Manufacturer:
- onsemi
- Package:
- 6-XFDFN
- Datasheet:
-
NCV8703MX28TCG.pdf
- Description:
- IC REG LINEAR 2.8V 300MA 6XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,063
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Product details
Overview
NCV8703MX28TCG 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 over load/line/temperature, and 13 µVRMS integrated noise (100 Hz–100 kHz). It powers noise-sensitive RF receivers, imaging sensors, and audio processors in satellite radio, rear-view cameras, and portable entertainment systems.
For engineers reviewing the NCV8703MX28TCG 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, active output discharge, thermal shutdown, and stability with only a 1 µF ceramic output capacitor.
Technical Context
The NCV8703MX28TCG employs a PMOS pass transistor with integrated soft-start, undervoltage lockout (UVLO), and adaptive ground current control to maintain ultra-low IQ across light-load conditions. Its internal bandgap reference and enable logic support precise regulation and controlled turn-on/off sequencing.
It features active output discharge via a 320 Ω internal resistor during shutdown, thermal shutdown at 160 °C with 20 °C hysteresis, and robust protection including current limiting (490 mA typ.) and short-circuit tolerance. The device operates across −40 °C to +125 °C junction temperature and supports input voltages from 2.0 V to 5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2% - ensures stable bias for 2.8 V analog rails without external feedback components. |
| Max Output Current | 300 mA continuous - sufficient for powering image sensors or RF front-ends in automotive ADAS modules. |
| Quiescent Current | 12 µA typ. at no load - enables multi-year battery life in always-on vehicle safety systems. |
| Output Noise | 13 µVRMS (100 Hz–100 kHz) - eliminates need for external noise-bypass capacitors in precision analog signal chains. |
| Dropout Voltage | 180 mV typ. at 300 mA - allows operation down to VIN = 3.08 V, critical for Li-ion battery-powered camera modules. |
| PSRR | 68 dB at 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding shared power domains. |
| Enable Threshold | VEN_HI = 0.9 V, VEN_LO = 0.4 V - compatible with 1.8 V/3.3 V logic interfaces and provides 0.5 V hysteresis against noise-induced toggling. |
Pinout & Package
NCV8703MX28TCG is packaged in XDFN-6 (1.5 mm × 1.5 mm, 0.5 mm pitch), optimized for space-constrained automotive PCBs. Thermal performance is enhanced by exposed thermal pad soldered to PCB copper plane (JB = 77 °C/W).
| 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 high-frequency noise and trace inductance effects. |
| 2 (EN) | Logic-enable control input | Drives high (>0.9 V) to enable regulation; low (<0.4 V) disables output and activates active discharge to GND. |
| 3 (N/C) | No-connect terminal | Internally unconnected; may be tied to GND to improve thermal dissipation but must not be used as signal path. |
| 4 (OUT) | Regulated output | Delivers 2.8 V ±2%; requires ≥1 µF X7R/X5R ceramic capacitor placed adjacent to pin for stability and transient response. |
| 5 (GND) | Power ground reference | Die ground connected via lead frame; must be soldered to large copper pour for optimal thermal and EMI performance. |
| 6 (N/C) | No-connect terminal | Internally unconnected; no electrical function; leave floating or tie to GND per layout best practice for thermal relief. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise without bypass cap | 13 µVRMS (100 Hz–100 kHz) - enables clean power for RF receivers and CMOS image sensors without adding BOM cost or board area. |
| Adaptive ground current | 12 µA IQ at zero load - extends battery runtime in always-on telematics and driver-monitoring systems. |
| Active output discharge | 320 Ω internal pull-down - ensures fast, controlled VOUT ramp-down during shutdown, preventing latch-up in downstream logic. |
| AEC-Q100 qualified | Grade 1 (−40 °C to +125 °C) - validated for under-hood and cabin-mounted automotive electronics with PPAP capability. |
| Stable with minimal capacitance | 1 µF ceramic COUT - reduces solution size and cost vs. legacy LDOs requiring ≥10 µF tantalum or electrolytic capacitors. |
Applications
| Satellite Radio Receiver Power | Rear-View Camera Module |
|---|---|
|
Use Scenario: Powers RF tuner IC and low-noise amplifier in automotive satellite radio head units operating from 12 V battery via intermediate DC-DC stage. IC Role / Device Role / Timing Role: Clean 2.8 V bias rail for RF front-end; rejects switching noise from upstream buck converter. Use Value: 13 µVRMS noise and 68 dB PSRR at 1 kHz prevent desensitization of weak satellite signals and maintain BER < 10−6. |
Use Scenario: Supplies image sensor and ISP in rear-view camera module mounted in vehicle tailgate, subject to wide temperature swings and vibration. IC Role / Device Role / Timing Role: Primary 2.8 V analog supply for CIS pixel array and analog front-end; enables fast wake-from-sleep via EN pin. Use Value: 12 µA quiescent current and AEC-Q100 Grade 1 rating ensure reliable operation during 15+ year vehicle lifecycle with zero maintenance. |
| Portable Entertainment System Audio | Lane Change Detection Sensor |
|
Use Scenario: Provides ultra-clean 2.8 V supply to audio codec and DAC in infotainment display unit, co-located with high-current display backlight drivers. IC Role / Device Role / Timing Role: Low-noise LDO decoupling rail isolating sensitive audio circuitry from digital noise coupling paths. Use Value: Eliminates audible hiss and distortion by suppressing 100 Hz–20 kHz ripple; no external noise filter capacitor required. |
Use Scenario: Powers radar transceiver and signal conditioning ASIC in blind-spot monitoring system, requiring rapid enable/disable during vehicle motion detection. IC Role / Device Role / Timing Role: Regulated 2.8 V supply with active discharge and 200 µs turn-on time for deterministic sensor activation timing. Use Value: Fast EN-controlled startup and shutdown meet ASIL-B functional safety timing requirements for real-time object detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8170AMX280TBG | Lower IQ (3.5 µA), same 2.8 V output, but only 150 mA rated output and no active discharge. | Suitable for ultra-low-power microcontrollers or sensors, not for 300 mA imaging loads. | Select when IQ is primary constraint and load current ≤150 mA; avoid for camera or RF applications. |
| TLD5098ELXUMA1 | Automotive LED driver with integrated LDO; 2.8 V option available but designed for constant-current LED bias, not general-purpose regulation. | Targeted at lighting control, not analog signal chain power; lacks PSRR/noise specs for RF/audio use. | Only consider if replacing both LED driver and LDO in same footprint; not a direct functional substitute. |
Compared with NCV8703MX28TCG, NCV8170AMX280TBG trades 150 mA output and missing active discharge for lower IQ, while TLD5098ELXUMA1 integrates LED driving functionality at the expense of LDO flexibility and noise performance-neither offers drop-in replacement capability.
Availability
NCV8703MX28TCG is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics systems requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for NCV8703MX28TCG 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 NCV8703MX28TCG belongs to onsemi's automotive-qualified LDO portfolio, engineered specifically for noise-sensitive analog subsystems in vehicles-including RF, imaging, and audio-where ultra-low noise, low IQ, and AEC-Q100 reliability are mandatory.
FAQ
What is the maximum input voltage for the NCV8703MX28TCG?
The NCV8703MX28TCG supports an absolute maximum input voltage of 6 V, but its recommended operating input range is 2.0 V to 5.5 V. Operation above 5.5 V risks permanent damage, and operation below 2.0 V may trigger undervoltage lockout (UVLO) below ~1.6 V. For 2.8 V output, minimum functional VIN is VOUT + dropout ≈ 2.98 V.
Does the NCV8703MX28TCG require an external noise-bypass capacitor?
No, the NCV8703MX28TCG does not require an external noise-bypass capacitor. Its integrated design achieves 13 µVRMS output noise (100 Hz–100 kHz) without one-unlike many legacy LDOs. This simplifies layout, reduces BOM count, and saves board space, especially critical in compact automotive camera modules.
How does the enable (EN) pin function on the NCV8703MX28TCG?
The EN pin on the NCV8703MX28TCG controls regulator state: >0.9 V enables regulation and disables active discharge; <0.4 V disables output and activates a 320 Ω internal pull-down to discharge VOUT rapidly. An internal 110 nA pull-down ensures default-off behavior if EN is left floating, and built-in 2 mV hysteresis prevents noise-induced oscillation.
Is the NCV8703MX28TCG suitable for battery-powered applications with long standby time?
Yes-the NCV8703MX28TCG draws only 12 µA quiescent current at no load and just 120 nA in shutdown (VEN ≤ 0.4 V), making it ideal for battery-backed automotive modules like event-triggered dashcams or always-on driver monitoring systems where multi-year shelf life is required.
What thermal considerations apply to the NCV8703MX28TCG in XDFN-6 package?
In the XDFN-6 package, the NCV8703MX28TCG has JB = 77 °C/W and JA = 146 °C/W (1 oz Cu, 645 mm²). To sustain 300 mA at high ambient temperatures, the PCB must include a thermally robust layout: exposed pad fully soldered to ≥200 mm² copper pour, minimized trace resistance, and adequate airflow or heatsinking if power dissipation exceeds 300 mW.
NCV8703MX28TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-XFDFN
- 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:
- 6-XDFN (1.5x1.5)
NCV8703MX28TCG FAQ
1.How can I place an order for NCV8703MX28TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8703MX28TCG 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 NCV8703MX28TCG reliable?
The price and inventory of NCV8703MX28TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8703MX28TCG is usually 5 days.
3.What payment methods are accepted for NCV8703MX28TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8703MX28TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8703MX28TCG?
NCV8703MX28TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8703MX28TCG 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 NCV8703MX28TCG?
For technical support, including NCV8703MX28TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8703MX28TCG requirements.
6.How does Aetrix verify that NCV8703MX28TCG is sourced from the original manufacturer or authorized distributors?
All NCV8703MX28TCG 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 NCV8703MX28TCG meets industry standards.
7.What is the process for return or replacement of NCV8703MX28TCG?
All NCV8703MX28TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8703MX28TCG, 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 NCV8703MX28TCG part is unused and in its original packaging.
Return procedure for NCV8703MX28TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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