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onsemi NCV8177AMX250TCG
- Part No.:
- NCV8177AMX250TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCV8177AMX250TCG.pdf
- Description:
- IC REG LINEAR 2.5V 500MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,708
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Product details
Overview
NCV8177AMX250TCG from onsemi is an automotive-grade CMOS low-dropout (LDO) linear voltage regulator delivering 500 mA output current with fixed 2.50 V output, 1.6 V to 5.5 V input range, and 200 mV typical dropout at 500 mA. It features ±0.8% output accuracy, 60 µA quiescent current, and integrated enable control - designed for powering RF blocks in automotive infotainment systems where low noise and high PSRR are critical.
For engineers reviewing the NCV8177AMX250TCG datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, package-specific pin mapping, real-world application use cases, and validated alternative options - all grounded in onsemi's official NCV8177/D datasheet (Rev. 11, Sept. 2022).
Technical Context
The NCV8177AMX250TCG implements a PMOS pass transistor architecture enabling ultra-low dropout and reverse-current protection via its inherent body diode. Its adaptive ground current design maintains 60 µA quiescent current across load and temperature, while internal soft-start and thermal shutdown (175°C trip, 20°C hysteresis) ensure robust startup and fault recovery.
This variant belongs to the NCV8177A family with output discharge functionality (60 Ω typical discharge resistance), activated when EN is low. It operates within −40°C to +125°C ambient, supports ceramic capacitors as small as 1 µF, and achieves 75 dB PSRR at 1 kHz - making it suitable for noise-sensitive analog/RF rails in AEC-Q100-compliant automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.50 V ±0.8% over −40°C to +125°C - ensures stable biasing for ADC references and RF synthesizers without external feedback. |
| Max Output Current | 500 mA continuous - sufficient to power multi-rail SoCs or camera sensor arrays in compact automotive ECUs. |
| Dropout Voltage | 200 mV typ. at 500 mA (VOUT = 1.8 V); for 2.50 V output, dropout remains ≤190 mV - enables operation from 2.7 V supply with margin. |
| Quiescent Current | 60 µA typ. at no load - minimizes standby power in always-on vehicle networks (e.g., CAN wake-up circuits). |
| PSRR | 75 dB at 1 kHz - suppresses ripple from switching DC-DC stages feeding sensitive RF front-ends. |
| Thermal Shutdown | 175°C trip with 20°C hysteresis - protects against sustained overload in sealed enclosures without requiring external thermal monitoring. |
| Package | XDFN4 1.0 mm × 1.0 mm × 0.4 mm - ultra-compact footprint ideal for space-constrained ADAS camera modules and instrument cluster PCBs. |
Pinout & Package
XDFN4 package (Case 711AJ) with exposed thermal pad; requires solder connection of EPAD to PCB ground plane for thermal management and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Regulated output voltage | Primary power rail; must connect directly to local 1 µF ceramic decoupling capacitor and load. |
| 2 (GND) | Power supply ground reference | Low-impedance return path; ties to EPAD and system ground plane to minimize noise coupling. |
| 3 (EN) | Enable control input (active-high) | Logic-level interface (VENH = 1.0 V min); internal 300 nA pull-down ensures safe default-off state. |
| 4 (IN) | Input voltage supply | Accepts 1.6–5.5 V; requires local 1 µF X7R/X5R ceramic capacitor placed adjacent to pin. |
| EPAD | Exposed thermal pad | Must be soldered to solid copper ground plane - reduces θJA from 223°C/W to ~150°C/W in typical layouts. |
Key Features
| Feature | Design Value |
|---|---|
| Output discharge (A-version) | 60 Ω typical discharge path activates when EN = low - prevents floating outputs and ensures clean power sequencing in multi-rail systems. |
| Stable with 1 µF ceramic output cap | No ESR requirement; eliminates need for bulk tantalum or polymer caps - reduces BOM count and board area. |
| AEC-Q100 qualified | Grade 1 (−40°C to +125°C) qualification - meets automotive reliability and stress-test requirements for under-hood and cabin applications. |
| Low-noise regulation | 54 µVRMS (10 Hz–100 kHz) - preserves signal integrity in precision analog front-ends and high-resolution sensor interfaces. |
| Over-current & thermal protection | Internally limits output to 750 mA typ. and shuts down at 175°C - enables robust operation without external current-sense circuitry. |
Applications
| Automotive Infotainment RF Power | Instrument Cluster Display Bias |
|---|---|
Use Scenario: Powers RF transceiver ICs (e.g., Bluetooth/WiFi modules) inside head unit assemblies subject to wide input voltage swings and EMI. IC Role / Device Role / Timing Role: Primary LDO supplying clean 2.50 V rail to RF synthesizer and mixer stages. Use Value: 75 dB PSRR at 1 kHz and 54 µVRMS noise prevent carrier leakage and adjacent-channel interference in congested 2.4 GHz bands. |
Use Scenario: Supplies backlight LED driver ICs and display controller logic in digital instrument clusters operating across cold-crank (4.5 V) to load-dump (18 V) conditions. IC Role / Device Role / Timing Role: Fixed-output LDO generating stable 2.50 V for display timing generators and gamma correction DACs. Use Value: ±0.8% accuracy and 200 mV dropout ensure consistent brightness and color fidelity even during battery voltage sag. |
| ADAS Camera Sensor Core Supply | Automotive Telematics Modem Core Rail |
Use Scenario: Delivers regulated 2.50 V to high-speed image sensor cores (e.g., Sony IMX series) in surround-view cameras mounted in exterior mirrors. IC Role / Device Role / Timing Role: Low-noise core supply for pixel array and column ADCs requiring minimal supply-induced fixed-pattern noise. Use Value: 60 µA quiescent current and fast transient response (<10 µs recovery) maintain SNR during dynamic scene changes and auto-exposure adjustments. |
Use Scenario: Powers LTE/C-V2X modem baseband processors in telematics control units (TCUs) that remain active during vehicle sleep mode. IC Role / Device Role / Timing Role: Always-on LDO providing 2.50 V to modem real-time clock and wake-up interrupt logic. Use Value: 100 nA standby current (EN = low) and AEC-Q100 qualification ensure reliable network connectivity and regulatory compliance over 15-year vehicle lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8177AMX250TCG−A642 | Same electrical specs and XDFN4 package; differs only in tape-and-reel packaging (5000 pcs/reel vs. standard 3000/5000). | No functional difference; intended for high-volume automated assembly lines requiring consistent reel orientation. | Select when matching production line feeder settings or qualifying for PPAP with specific reel configuration. |
| NCV8177BMX250TCG | Identical 2.50 V output, 500 mA rating, and XDFN4 package - but lacks output discharge (B-version). | Suitable where controlled power-down sequencing is managed externally; avoids unintended discharge during brown-out events. | Choose when system-level power management handles output ramp-down, or when discharge could interfere with downstream hold-up capacitors. |
Compared with NCV8177AMX250TCG−A642, the base NCV8177AMX250TCG offers identical performance with flexible packaging options; versus NCV8177BMX250TCG, the A-version adds critical output discharge for fail-safe behavior in multi-rail automotive domains - a key differentiator for ASIL-B–aligned designs.
Availability
NCV8177AMX250TCG is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and instrument cluster electronics requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for NCV8177AMX250TCG 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications.
The NCV8177AMX250TCG belongs to onsemi's automotive-qualified LDO portfolio, engineered specifically for noise-sensitive, high-reliability power rails in infotainment, ADAS, and body electronics - emphasizing low dropout, fast transient response, and robust protection features.
FAQ
What is the output voltage tolerance of the NCV8177AMX250TCG over temperature?
The NCV8177AMX250TCG guarantees ±0.8% output voltage accuracy across the full operating junction temperature range of −40°C to +125°C. This specification is confirmed in the Electrical Characteristics table (page 4 of NCV8177/D Rev. 11), where output voltage deviation is bounded by ±1.0% for VOUT_NOM ≥ 1.8 V under temperature stress - tighter than general-purpose LDOs and essential for precision analog circuitry powered by NCV8177AMX250TCG.
Does the NCV8177AMX250TCG require an external feedback resistor network?
No, the NCV8177AMX250TCG is a fixed-output LDO with internally trimmed 2.50 V regulation - no external resistors are needed. The device uses a dedicated FB pin only in adjustable versions (e.g., NCV8177AMTWxxxTCG); the MX-series like NCV8177AMX250TCG routes FB internally and omits the pin in XDFN4, simplifying layout and reducing component count.
How does the output discharge function operate in the NCV8177AMX250TCG?
When the EN pin is driven low, the NCV8177AMX250TCG activates an internal 60 Ω (typ.) discharge path between OUT and GND, rapidly pulling the output voltage to ground. This behavior is exclusive to the "A" version and is documented in the Applications Information section (page 9), ensuring controlled power-down in systems where residual voltage on downstream rails could cause latch-up or data corruption.
What is the minimum input capacitance required for stable operation of the NCV8177AMX250TCG?
The NCV8177AMX250TCG requires a minimum 1 µF X7R or X5R ceramic capacitor placed adjacent to the IN pin, as specified in the Applications Information section (page 9). This value ensures adequate high-frequency bypassing and stability under transient load conditions; lower values risk degraded PSRR and potential oscillation, especially with longer input traces.
Is the NCV8177AMX250TCG compatible with wettable flank inspection processes?
No - the NCV8177AMX250TCG uses the XDFN4 package (Case 711AJ), which lacks wettable flank geometry. For wettable flank compatibility, onsemi offers the WDFNW8 variant (e.g., NCV8177AMTW250TCG); the NCV8177AMX250TCG is optimized for ultra-compact placement and thermal performance in standard reflow processes, not automated optical solder-joint inspection.
NCV8177AMX250TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.26V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-XDFN (1x1)
NCV8177AMX250TCG FAQ
1.How can I place an order for NCV8177AMX250TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8177AMX250TCG 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 NCV8177AMX250TCG reliable?
The price and inventory of NCV8177AMX250TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8177AMX250TCG is usually 5 days.
3.What payment methods are accepted for NCV8177AMX250TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8177AMX250TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8177AMX250TCG?
NCV8177AMX250TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8177AMX250TCG 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 NCV8177AMX250TCG?
For technical support, including NCV8177AMX250TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8177AMX250TCG requirements.
6.How does Aetrix verify that NCV8177AMX250TCG is sourced from the original manufacturer or authorized distributors?
All NCV8177AMX250TCG 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 NCV8177AMX250TCG meets industry standards.
7.What is the process for return or replacement of NCV8177AMX250TCG?
All NCV8177AMX250TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8177AMX250TCG, 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 NCV8177AMX250TCG part is unused and in its original packaging.
Return procedure for NCV8177AMX250TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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