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onsemi NCV8170AMX310TCG
- Part No.:
- NCV8170AMX310TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCV8170AMX310TCG.pdf
- Description:
- IC REG LINEAR 3.1V 150MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,720
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Product details
Overview
NCV8170AMX310TCG from onsemi is an automotive-grade CMOS low-dropout (LDO) regulator delivering 150 mA output with ultra-low quiescent current (typ. 500 nA), 3.1 V fixed output voltage, and dropout voltage of 170 mV at full load. It features active discharge, thermal shutdown, over-current protection, and AEC-Q100 qualification - designed for always-on battery-powered modules in ADAS camera systems.
For engineers reviewing the NCV8170AMX310TCG datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ for multi-year battery life, ±1% output accuracy across −40°C to +125°C, stable operation with 1 µF ceramic capacitors, and EN-controlled active discharge for fast power-down sequencing in automotive infotainment and telematics.
Technical Context
The NCV8170AMX310TCG implements a CMOS-based LDO architecture with dynamic quiescent current adjustment, enabling 500 nA IQ at zero load while maintaining fast transient response via internal compensation. Its EN pin controls both device enable/disable and activation of the 100 Ω active discharge path, critical for controlled VOUT ramp-down in safety-critical automotive subsystems.
It operates across 2.2 V–5.5 V input range and delivers regulated 3.1 V output with ±1% accuracy over temperature and line/load variations. The device is internally compensated and stable with 1 µF–10 µF X5R/X7R ceramic capacitors, eliminating need for external ESR tuning or stability resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.1 V ±1% over −40°C to +125°C - ensures reliable MCU core or sensor biasing without external feedback network |
| Quiescent Current | Typ. 500 nA at IOUT = 0 mA - enables >10-year battery life in always-on vehicle modules |
| Dropout Voltage | 170 mV typ. at 150 mA - supports operation down to VIN = 3.27 V, compatible with aging Li-ion or dual-cell alkaline supplies |
| PSRR | 41 dB at 1 kHz (VIN = 4.3 V, IOUT = 150 mA) - suppresses switching noise from adjacent DC-DC converters in dense PCB layouts |
| Output Noise | 125 µVrms (100 Hz–1 MHz) - suitable for noise-sensitive analog sensors and RF front-end bias rails |
| Thermal Shutdown | 175°C trip with 25°C hysteresis - prevents thermal runaway during sustained overload or high ambient conditions |
| Active Discharge | 100 Ω internal path activated when EN = 0 V - discharges VOUT to GND in <1 ms, meeting ASIL-B functional safety timing requirements |
Pinout & Package
NCV8170AMX310TCG is packaged in a 1 × 1 mm xDFN4 (Case 711AJ, MX suffix), thermally enhanced with EPAD internally connected to GND. This package supports high-density automotive PCB layouts and achieves 250°C/W junction-to-air thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 4) | Input Power Supply | Accepts 2.2–5.5 V; requires ≥1 µF X5R/X7R ceramic decoupling close to pin |
| GND (Pin 2) | Power Ground Reference | Primary return path; EPAD is internally tied to this node for thermal and electrical integrity |
| EN (Pin 3) | Enable Control Input | Active-high logic: ≥1.2 V enables regulator and disables discharge; ≤0.4 V disables regulator and activates 100 Ω discharge path |
| OUT (Pin 1) | Regulated Output | Delivers 3.1 V ±1%; stable with 1–10 µF ceramic output capacitor placed adjacent to pin |
| NC (Pin 4, SOT−563 mapping) | No Connect | Not bonded in xDFN4 package; electrically isolated and must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for −40°C to +125°C operation with PPAP capability - meets automotive OEM reliability and traceability requirements |
| Ultra-low IQ (500 nA) | Enables >10-year shelf life and runtime in keyless entry fobs, tire pressure monitors, and parking sensors |
| Active output discharge (100 Ω) | Ensures rapid, controlled VOUT decay upon disable - eliminates floating rail issues in multi-rail power sequencing |
| Stable with 1 µF ceramic COUT | Eliminates need for tantalum or aluminum electrolytics - reduces BOM cost, size, and failure risk in harsh environments |
| ±1% output accuracy | Maintains precise voltage for 3.3 V I/O domains and low-voltage microcontrollers without calibration overhead |
Applications
| Telematics Control Unit (TCU) | ADAS Camera Module |
|---|---|
Use Scenario: Always-on GPS/GNSS receiver and cellular modem in vehicle TCU requiring continuous position reporting during ignition-off states. IC Role / Device Role / Timing Role: Primary 3.1 V bias rail for GNSS baseband processor and LTE transceiver RF section. Use Value: 500 nA IQ extends backup battery life beyond 5 years; ±1% regulation maintains ADC reference stability for accurate signal acquisition. | Use Scenario: Front-facing driver monitoring camera operating in stop/start and park-assist modes with frequent power cycling. IC Role / Device Role / Timing Role: Supplies 3.1 V to image sensor and ISP, synchronized with EN pin for fast wake-up and controlled shutdown. Use Value: Active discharge clears VOUT within 1 ms after EN deassertion, preventing ghost images and ensuring deterministic boot timing. |
| Automotive Keyless Entry Fob | Infotainment System Display Backlight Driver |
Use Scenario: Ultra-low-power remote fob with motion-triggered wake-up and encrypted RF transmission. IC Role / Device Role / Timing Role: Powers 3.1 V MCU core and sub-GHz transceiver during brief transmit bursts. Use Value: 170 mV dropout allows operation down to 3.27 V VIN - supports full functionality even with weak coin-cell batteries. | Use Scenario: LCD display backlight driver IC requiring clean, low-noise 3.1 V bias for PWM dimming control circuitry. IC Role / Device Role / Timing Role: Provides low-noise 3.1 V supply to op-amps and comparators in backlight brightness feedback loop. Use Value: 125 µVrms output noise prevents visible PWM ripple on display; 41 dB PSRR rejects noise from nearby buck converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73331PDBVR | 300 mA output, 350 nA IQ, no active discharge, SOT-23-5 package | Lacks AEC-Q100 qualification and active discharge - unsuitable for ASIL-B systems requiring controlled power-down | Select only for non-automotive, higher-current applications where discharge is not required |
| TPS78031QDDCRQ1 | 200 mA output, 500 nA IQ, active discharge, QFN-6 package, AEC-Q100 Grade 1 | Higher dropout (250 mV @ 150 mA), larger 2 × 2 mm package - increases board area and thermal resistance | Prefer when higher output current margin is needed; accept trade-off in footprint and thermal performance |
Compared with TLV73331PDBVR and TPS78031QDDCRQ1, the NCV8170AMX310TCG uniquely combines AEC-Q100 Grade 1, 1×1 mm xDFN4 footprint, 170 mV dropout, and guaranteed 100 Ω active discharge - making it optimal for space-constrained, safety-aware automotive modules demanding minimal IQ and deterministic shutdown behavior.
Availability
NCV8170AMX310TCG is available at Aetrix Electronics and suitable for automotive telematics, ADAS camera modules, keyless entry systems, and infotainment displays requiring stable component supply with long-term lifecycle assurance.
Supply support for NCV8170AMX310TCG 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, medical, and IoT applications.
The NCV8170 series belongs to onsemi's automotive power management portfolio, engineered specifically for ultra-low-IQ, AEC-Q100-compliant LDO regulation in always-on vehicle subsystems.
FAQ
What is the output voltage tolerance of the NCV8170AMX310TCG over temperature and load?
The NCV8170AMX310TCG provides a fixed 3.1 V output with ±1% accuracy across the full automotive temperature range (−40°C to +125°C) and for output currents from 0 mA to 150 mA. This specification is guaranteed by design and characterization, ensuring stable MCU core or sensor biasing without calibration.
Does the NCV8170AMX310TCG require an external resistor divider for output voltage setting?
No. The NCV8170AMX310TCG is a fixed-output LDO with factory-trimmed 3.1 V regulation. It does not use external feedback resistors - simplifying layout, reducing BOM count, and improving long-term voltage stability versus adjustable regulators.
How does the active discharge function operate in the NCV8170AMX310TCG?
When the EN pin voltage falls below 0.4 V, the NCV8170AMX310TCG disables regulation and activates an internal 100 Ω discharge path between OUT and GND. This pulls VOUT to ground in under 1 ms, preventing floating outputs and enabling safe, repeatable power-down sequencing in automotive systems.
Can the NCV8170AMX310TCG be used with ceramic output capacitors smaller than 1 µF?
No. The NCV8170AMX310TCG is characterized and guaranteed stable only with output capacitance ≥1 µF (X5R or X7R ceramic). Using smaller values may cause oscillation or degraded transient response - per datasheet Section "Output Decoupling (COUT)".
Is the NCV8170AMX310TCG pin-compatible with other variants in the NCV8170 family?
Yes. All NCV8170 xDFN4 variants (MX suffix) share identical 4-pin pinout and 1 × 1 mm footprint. The NCV8170AMX310TCG is mechanically and electrically pin-compatible with NCV8170AMX120TCG, NCV8170AMX250TCG, etc., enabling voltage-scaling flexibility without PCB redesign.
NCV8170AMX310TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XDFN 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):
- 3.1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 0.9 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-XDFN (1x1)
NCV8170AMX310TCG FAQ
1.How can I place an order for NCV8170AMX310TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8170AMX310TCG 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 NCV8170AMX310TCG reliable?
The price and inventory of NCV8170AMX310TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8170AMX310TCG is usually 5 days.
3.What payment methods are accepted for NCV8170AMX310TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8170AMX310TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8170AMX310TCG?
NCV8170AMX310TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8170AMX310TCG 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 NCV8170AMX310TCG?
For technical support, including NCV8170AMX310TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8170AMX310TCG requirements.
6.How does Aetrix verify that NCV8170AMX310TCG is sourced from the original manufacturer or authorized distributors?
All NCV8170AMX310TCG 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 NCV8170AMX310TCG meets industry standards.
7.What is the process for return or replacement of NCV8170AMX310TCG?
All NCV8170AMX310TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8170AMX310TCG, 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 NCV8170AMX310TCG part is unused and in its original packaging.
Return procedure for NCV8170AMX310TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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