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onsemi NCV8702SN28T1G
- Part No.:
- NCV8702SN28T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCV8702SN28T1G.pdf
- Description:
- IC REG LINEAR 2.8V 200MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,362
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Product details
Overview
NCV8702SN28T1G from onsemi is an automotive-grade ultra-low-noise, ultra-low-quiescent-current LDO linear voltage regulator delivering 200 mA output with 2.8 V fixed output voltage, 140 mV typical dropout at full load, ±2% output accuracy, and 11 µVRMS integrated noise (100 Hz–100 kHz). It powers noise-sensitive analog circuits in satellite radio receivers, rear-view cameras, and portable entertainment systems.
For engineers reviewing the NCV8702SN28T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, TSOP-5 package compatibility, adaptive ground current circuit for <10 µA no-load IQ, active output discharge, and stability with only 1 µF ceramic output capacitor.
Technical Context
The NCV8702SN28T1G employs a PMOS pass transistor architecture with internal soft-start, undervoltage lockout (UVLO) at 1.6 V (typ), and thermal shutdown at 160 °C. Its adaptive ground current circuit dynamically reduces quiescent current under light loads while maintaining regulation integrity.
It integrates an EN-controlled logic block enabling ON/OFF operation with 0.9 V high-threshold and 0.4 V low-threshold, plus active discharge via a 1 kΩ internal resistor when disabled. The device achieves 68 dB PSRR at 1 kHz and requires no external noise bypass capacitor due to its ultra-low intrinsic noise design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2% over full load/line/temperature range - ensures stable biasing for 2.8 V analog sensors and RF front-ends. |
| Max Output Current | 200 mA continuous - sufficient for powering image sensor signal chains or audio codec subsystems. |
| Dropout Voltage | 140 mV typical at 200 mA - enables operation from single-cell Li-ion (3.0 V min) down to 2.94 V input while sustaining regulation. |
| Quiescent Current | 10 µA typical at zero load - extends battery life in always-on automotive modules like lane-change detectors. |
| Output Noise | 11 µVRMS (100 Hz–100 kHz) - eliminates need for external noise-filtering capacitors in GPS receiver LNA power rails. |
| PSRR | 68 dB at 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding shared input rails. |
| Enable Threshold | EN high = ≥0.9 V, low = ≤0.4 V - compatible with standard CMOS logic and supports direct connection to microcontroller GPIOs. |
Pinout & Package
NCV8702SN28T1G is housed in a Pb-free, RoHS-compliant TSOP-5 (Case 483) surface-mount package measuring 2.9 mm × 1.6 mm × 1.0 mm, optimized for space-constrained automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input voltage supply | Accepts 2.0–5.5 V; requires local 1 µF ceramic capacitor to minimize trace inductance effects during load transients. |
| 2 - EN | Enable control input | Logic-level input: ≥0.9 V enables regulation; ≤0.4 V disables output and activates 1 kΩ active discharge path to GND. |
| 3 - N/C | No-connect terminal | Internally unconnected; may be tied to GND to improve thermal dissipation without electrical impact. |
| 4 - OUT | Regulated output | Delivers stable 2.8 V; stable with ≥1 µF X5R/X7R ceramic capacitor; sensitive to PCB trace resistance affecting load regulation. |
| 5 - GND | Power ground reference | Primary return path for IN, OUT, and EN currents; must be connected to low-impedance ground plane for noise and thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise output | 11 µVRMS (100 Hz–100 kHz) enables direct powering of RF receivers and high-resolution ADCs without external filtering. |
| Adaptive ground current | Reduces IQ to 10 µA at no load and scales with output current - critical for low-power wake-up circuits in automotive body controllers. |
| Active output discharge | 1 kΩ internal pull-down engages when EN is low, ensuring fast, controlled VOUT ramp-down (<1 ms for 1 µF) to prevent system latch-up. |
| AEC-Q100 qualified | Rated for automotive temperature range (−40 °C to +125 °C junction) and PPAP-capable - meets functional safety requirements for ADAS camera modules. |
| Stable with minimal capacitance | Guaranteed stability using only 1 µF ceramic output capacitor - reduces BOM count and board area vs. legacy LDOs requiring ≥10 µF. |
Applications
| Satellite Radio Receiver Power | Rear-View Camera Sensor Bias |
|---|---|
Use Scenario: Powering low-noise amplifier (LNA) and tuner IC in vehicle-mounted SiriusXM receiver. IC Role / Device Role / Timing Role: Clean 2.8 V bias rail for RF front-end; rejects switching noise from infotainment SoC's DC-DC converters. Use Value: 11 µVRMS noise and 68 dB PSRR at 1 kHz preserve SNR and adjacent-channel rejection in weak-signal reception. | Use Scenario: Supplying image sensor and ISP in automotive backup camera module. IC Role / Device Role / Timing Role: Primary 2.8 V analog supply for CIS pixel array and analog front-end; enabled synchronously with camera wake-up signal. Use Value: Active discharge ensures rapid VOUT collapse upon disable, preventing ghost images during camera power cycling. |
| Portable Entertainment System Audio | Lane Change Detection Processor |
Use Scenario: Powering DAC and headphone amplifier in battery-powered vehicle media player. IC Role / Device Role / Timing Role: Low-noise 2.8 V rail for audio signal chain; operates from single-cell Li-ion (3.0–4.2 V). Use Value: 140 mV dropout allows >95% battery utilization; 10 µA quiescent current minimizes standby drain. | Use Scenario: Supplying radar signal processor and analog conditioning circuit in blind-spot monitoring ECU. IC Role / Device Role / Timing Role: Precision 2.8 V reference for ADCs sampling Doppler-shifted IF signals. Use Value: ±2% output accuracy and −40 °C to +125 °C operation ensure consistent gain calibration across environmental extremes. |
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 (250 nA typ), but higher noise (25 µVRMS), lower PSRR (55 dB @ 1 kHz), not AEC-Q100 qualified. | Targeted at ultra-low-power portable consumer devices, not automotive environments. | Select only for non-automotive, battery-critical designs where noise and qualification are secondary. |
| NCP163AMX280TBG | Similar 2.8 V output and AEC-Q100 grade, but higher dropout (250 mV @ 200 mA), higher noise (22 µVRMS), no active discharge. | Used in cost-sensitive automotive body electronics where fast turn-off is not required. | Choose when footprint compatibility is needed but ultra-low noise and active discharge are not mandatory. |
Compared with TPS7A0528PDBVR and NCP163AMX280TBG, the NCV8702SN28T1G uniquely combines automotive qualification, 11 µVRMS noise, active discharge, and 140 mV dropout - making it optimal for safety-critical, noise-sensitive ADAS sensor power rails where reliability and signal integrity are non-negotiable.
Availability
NCV8702SN28T1G is available at Aetrix Electronics and suitable for satellite radio receivers, rear-view camera modules, and portable entertainment systems requiring stable component supply across automotive production lifecycles.
Supply support for NCV8702SN28T1G 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 NCV8702SN28T1G belongs to onsemi's NCV automotive LDO family, engineered specifically for noise-sensitive analog subsystems in ADAS and infotainment systems where ultra-low noise, AEC-Q100 compliance, and robust transient response are essential.
FAQ
What is the output voltage tolerance of the NCV8702SN28T1G over temperature and load?
The NCV8702SN28T1G maintains ±2% output voltage accuracy across the full operating temperature range (−40 °C to +125 °C junction), full input voltage range (2.0 V to 5.5 V), and full load range (0 mA to 200 mA). This specification is guaranteed by design and characterization, not just typical behavior, ensuring predictable performance in automotive thermal environments.
Does the NCV8702SN28T1G require an external noise bypass capacitor?
No, the NCV8702SN28T1G does not require an external noise bypass capacitor. Its ultra-low 11 µVRMS output noise (100 Hz–100 kHz) is achieved through internal design optimization, eliminating the need for additional capacitors that increase cost and board area - a key advantage over legacy LDOs in space-constrained automotive modules.
How does the active discharge function operate in the NCV8702SN28T1G?
When the EN pin voltage falls below 0.4 V, the NCV8702SN28T1G disables regulation and activates an internal 1 kΩ pull-down resistor between OUT and GND. This discharges the output capacitor rapidly - typically within milliseconds for a 1 µF load - preventing residual voltage from interfering with downstream logic states or causing false wake-ups in camera or radar systems.
What is the minimum recommended output capacitor for stable operation of the NCV8702SN28T1G?
The NCV8702SN28T1G is stable with a minimum 1.0 µF ceramic capacitor (X5R or X7R dielectric, ±10% initial tolerance) on the OUT pin. Larger values (e.g., 4.7 µF or 10 µF) improve load transient response and high-frequency PSRR but are not required for basic stability - simplifying design and reducing BOM cost compared to LDOs needing ≥10 µF.
Is the NCV8702SN28T1G suitable for use in AEC-Q100 Grade 1 applications?
Yes, the NCV8702SN28T1G is AEC-Q100 qualified for Grade 1 (−40 °C to +125 °C ambient, corresponding to up to +125 °C junction under typical conditions), with PPAP documentation support. Its thermal shutdown (160 °C trip, 20 °C hysteresis) and current limiting (385 mA typ) provide robust protection in automotive under-hood and cabin environments.
NCV8702SN28T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 0.2V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 16 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
NCV8702SN28T1G FAQ
1.How can I place an order for NCV8702SN28T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8702SN28T1G 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 NCV8702SN28T1G reliable?
The price and inventory of NCV8702SN28T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8702SN28T1G is usually 5 days.
3.What payment methods are accepted for NCV8702SN28T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8702SN28T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8702SN28T1G?
NCV8702SN28T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8702SN28T1G 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 NCV8702SN28T1G?
For technical support, including NCV8702SN28T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8702SN28T1G requirements.
6.How does Aetrix verify that NCV8702SN28T1G is sourced from the original manufacturer or authorized distributors?
All NCV8702SN28T1G 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 NCV8702SN28T1G meets industry standards.
7.What is the process for return or replacement of NCV8702SN28T1G?
All NCV8702SN28T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8702SN28T1G, 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 NCV8702SN28T1G part is unused and in its original packaging.
Return procedure for NCV8702SN28T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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