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onsemi NCV8177AMX120TCG
- Part No.:
- NCV8177AMX120TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCV8177AMX120TCG.pdf
- Description:
- IC REG LINEAR 1.2V 500MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,161
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Product details
Overview
NCV8177AMX120TCG from onsemi is a 500 mA automotive-grade CMOS LDO voltage regulator with fixed 1.20 V output, 1.6 V to 5.5 V input range, 200 mV typical dropout at 500 mA (VOUT = 1.8 V), ±0.8% output accuracy, and integrated enable pin. It delivers low-noise (54 µVRMS, 10 Hz–100 kHz) and high PSRR (75 dB @ 1 kHz) for RF-sensitive power domains in automotive infotainment systems.
For engineers reviewing the NCV8177AMX120TCG datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (XDFN4 1.0 mm × 1.0 mm), confirmed thermal shutdown (175°C), output discharge function (A-version), stable operation with 1 µF ceramic capacitors, and AEC-Q100 qualification context for automotive design validation.
Technical Context
The NCV8177AMX120TCG implements a PMOS pass transistor architecture enabling ultra-low quiescent current (60 µA typ. at no load) and fast transient response. Its adaptive ground current behavior and internal 0.7 V reference with feedback loop ensure tight regulation across −40°C to +125°C ambient.
It integrates over-current protection, thermal shutdown with 20°C hysteresis, and an active-high enable pin (VENH = 1.0 V min) that activates output discharge (60 Ω typ.) when disabled - a key differentiator from the B-version. The device is optimized for space-constrained automotive modules requiring stable, low-noise biasing of RF receivers, camera sensors, and instrument cluster microcontrollers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.20 V ±0.8% over −40°C to +125°C - ensures stable core bias for low-voltage logic and analog circuits without external resistors. |
| Max Output Current | 500 mA continuous - supports mid-power RF front-ends and multi-sensor subsystems without derating at 85°C ambient. |
| Dropout Voltage | 200 mV typ. at 500 mA (VOUT = 1.8 V); 295 mV max at 500 mA (VOUT = 1.4 V) - enables operation from single-cell LiFePO4 or degraded 12 V rail (≥1.4 V headroom). |
| Quiescent Current | 60 µA typ. at no load - minimizes standby power in always-on automotive modules (e.g., telematics wake-up circuitry). |
| PSRR | 75 dB @ 1 kHz - suppresses switching noise from adjacent DC-DC converters feeding RF signal chains. |
| Output Noise | 54 µVRMS (10 Hz–100 kHz) - meets stringent SNR requirements for automotive camera ISPs and radar receivers. |
| Thermal Shutdown | 175°C activation with 20°C hysteresis - protects against sustained overload in sealed enclosures without latch-off behavior. |
Pinout & Package
XDFN4 1.0 mm × 1.0 mm × 0.4 mm package with exposed thermal pad (EPAD), Pb-free, wettable flank compatible. Pin 1 = OUT, Pin 2 = GND, Pin 3 = EN, Pin 4 = IN. EPAD must be soldered to PCB ground plane for thermal performance (RJA = 223°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Regulated output voltage | Delivers stable 1.20 V to load; connects directly to local decoupling capacitor (1 µF ceramic). |
| 2 (GND) | Power supply ground | Reference node for regulation and thermal path; ties to EPAD and system ground plane. |
| 3 (EN) | Enable control input (active-H) | Logic-high ≥1.0 V enables regulation; low ≤0.4 V disables output and activates discharge (60 Ω to GND). |
| 4 (IN) | Input voltage supply | Accepts 1.6–5.5 V; requires local 1 µF X7R/X5R ceramic capacitor within 2 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for −40°C to +125°C operation in automotive power domains - eliminates requalification for infotainment and ADAS ECUs. |
| Output discharge function | 60 Ω internal pull-down activated when EN = low - prevents floating outputs during sleep mode, critical for I/O isolation in multi-rail systems. |
| Stable with 1 µF ceramic output cap | No ESR requirement; enables use of compact 0201/0402 MLCCs - reduces solution size by >40% vs. legacy LDOs needing 10–22 µF tantalum. |
| Low-noise, high-PSRR architecture | 54 µVRMS noise + 75 dB PSRR @ 1 kHz - sustains RF receiver sensitivity (e.g., GNSS, V2X) without additional filtering stages. |
| Thermal and overcurrent protection | Auto-recovery thermal shutdown (175°C) + current limit (750 mA typ.) - ensures robustness during cold-crank or load dump events. |
Applications
| Automotive Infotainment Tuner Modules | ADAS Camera Sensor Biasing |
|---|---|
Use Scenario: Powering RF tuner ICs (e.g., Si21xx family) in head-unit radio receivers under varying battery conditions (9–16 V). IC Role / Device Role / Timing Role: Primary 1.20 V LDO supplying analog front-end and PLL circuitry with ultra-low noise and fast line transient response. Use Value: Maintains <1.5 dB NF degradation across cold-crank (6.5 V input) and ripple injection (200 mVP-P @ 100 kHz) due to 75 dB PSRR and 200 mV dropout. |
Use Scenario: Biasing CIS image sensors and ISP cores in rear-view and surround-view cameras operating at −40°C to +105°C. IC Role / Device Role / Timing Role: Low-noise 1.20 V supply for sensor analog chain and digital core, synchronized with frame-triggered EN control. Use Value: 54 µVRMS noise prevents fixed-pattern noise in 12-bit ADC output; output discharge clears residual charge before next exposure cycle. |
| Instrument Cluster Microcontroller Core | Telematics Control Unit (TCU) Memory Interface |
Use Scenario: Supplying 1.20 V core voltage to ARM Cortex-M7 MCU in digital instrument clusters with CAN FD and display drivers. IC Role / Device Role / Timing Role: Always-on LDO providing regulated core rail during vehicle sleep (CAN wake-up pending) and ignition cycles. Use Value: 60 µA quiescent current limits parasitic drain to <10 µA total system standby; AEC-Q100 Grade 1 ensures reliability over 15-year vehicle life. |
Use Scenario: Powering LPDDR4 I/O and PHY circuitry in TCU modules interfacing with cellular modems and GNSS receivers. IC Role / Device Role / Timing Role: Secondary LDO delivering clean 1.20 V to memory interface, decoupled from noisy main SoC rail. Use Value: Fast load transient response (<5 µs to settle ±1%) prevents data corruption during burst-mode memory access; 1 µF stability simplifies layout in dense RF zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8177BMX120TCG | No output discharge function; identical electrical specs otherwise. | Suitable where output must remain floating during disable (e.g., shared-bus systems). | Select only if discharge is not required - avoids unnecessary leakage path during deep sleep. |
| TLV73312PDBVR | Lower IQ (45 µA), smaller X2SON package (1.0 × 1.0 mm), but no AEC-Q100 qualification or thermal shutdown hysteresis. | Limited to non-automotive industrial or consumer portable designs. | Use only in cost-sensitive, non-automotive applications where AEC-Q100 and 175°C shutdown are not mandated. |
Compared with NCV8177BMX120TCG, the NCV8177AMX120TCG adds controlled output discharge for safer power sequencing; compared with TLV73312PDBVR, it provides automotive-grade reliability, thermal hysteresis, and guaranteed PSRR/noise performance across temperature - essential for safety-critical vehicle networks.
Availability
NCV8177AMX120TCG is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and instrument cluster designs requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for NCV8177AMX120TCG 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 NCV8177AMX120TCG belongs to onsemi's automotive-qualified LDO portfolio, designed specifically to replace legacy bipolar regulators in noise-sensitive, space-constrained vehicle subsystems while meeting PPAP and AEC-Q100 Grade 1 requirements.
FAQ
What is the output voltage tolerance of the NCV8177AMX120TCG over temperature?
The NCV8177AMX120TCG maintains ±0.8% output voltage accuracy across −40°C to +125°C junction temperature. At 25°C, tolerance is tighter (±0.8% typ.), and worst-case drift remains within ±1.5% over full automotive temperature range per datasheet Section 4 Electrical Characteristics - ensuring reliable biasing for precision analog circuits without external trimming.
Does the NCV8177AMX120TCG require an external feedback resistor network?
No, the NCV8177AMX120TCG is a fixed-output LDO with internally trimmed 1.20 V regulation. It does not use an FB pin - unlike adjustable variants (e.g., NCV8177AMX120TCG's WDFNW8 counterparts with FB), eliminating resistor matching errors and PCB area. The XDFN4 variant routes all functionality through its 4-pin layout: IN, EN, OUT, GND.
How does the output discharge function operate in the NCV8177AMX120TCG?
When the EN pin is driven low (<0.4 V), the NCV8177AMX120TCG disables regulation and activates an internal 60 Ω (typ.) discharge path from OUT to GND. This pulls the output voltage to near ground within microseconds, preventing unintended I/O leakage or latch-up in downstream logic - a feature absent in the B-version and critical for automotive ASIL-B compliant power sequencing.
Can the NCV8177AMX120TCG operate with input voltage below 1.6 V?
No - the absolute minimum input voltage for functional regulation is 1.6 V per datasheet Absolute Maximum Ratings and Recommended Operating Conditions. Below 1.6 V, the device may not maintain regulation or specified dropout; operation at 1.5 V risks output collapse and undefined behavior. For sub-1.6 V inputs, consider alternative regulators like the NCP114 series.
What is the thermal resistance (RJA) of the NCV8177AMX120TCG in its XDFN4 package?
The NCV8177AMX120TCG in XDFN4 has a junction-to-ambient thermal resistance (RJA) of 223°C/W when mounted on a standard JEDEC 2S2P test board (JESD51-7). Real-world RJA improves significantly with larger copper area and multiple ground layers - e.g., 100 mm² 1-oz Cu reduces RJA to ~120°C/W, enabling 500 mA continuous operation up to +85°C ambient.
NCV8177AMX120TCG 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):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- 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)
NCV8177AMX120TCG FAQ
1.How can I place an order for NCV8177AMX120TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8177AMX120TCG 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 NCV8177AMX120TCG reliable?
The price and inventory of NCV8177AMX120TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8177AMX120TCG is usually 5 days.
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4.How is shipping managed for NCV8177AMX120TCG?
NCV8177AMX120TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8177AMX120TCG 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 NCV8177AMX120TCG?
For technical support, including NCV8177AMX120TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8177AMX120TCG requirements.
6.How does Aetrix verify that NCV8177AMX120TCG is sourced from the original manufacturer or authorized distributors?
All NCV8177AMX120TCG 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 NCV8177AMX120TCG meets industry standards.
7.What is the process for return or replacement of NCV8177AMX120TCG?
All NCV8177AMX120TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8177AMX120TCG, 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 NCV8177AMX120TCG part is unused and in its original packaging.
Return procedure for NCV8177AMX120TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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