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onsemi NCV8177BMX120TCG
- Part No.:
- NCV8177BMX120TCG
- Manufacturer:
- onsemi
- Package:
- -
- Datasheet:
-
NCV8177BMX120TCG.pdf
- Description:
- IC REG LINEAR 1.2V 500MA 4XDFN
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Product details
Overview
NCV8177BMX120TCG from onsemi is an automotive-grade CMOS low-dropout linear regulator delivering 500 mA output current with 1.20 V fixed output, 1.6 V to 5.5 V input range, and 200 mV typical dropout at 500 mA (VOUT = 1.8 V). It features ±0.8% output voltage accuracy, 60 µA quiescent current, and high PSRR (75 dB @ 1 kHz), making it suitable for powering RF blocks in automotive infotainment systems.
For engineers reviewing the NCV8177BMX120TCG datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, package-specific pin mapping, real-world application constraints, and validated alternative options - all grounded in the official ON Semiconductor NCV8177/D Rev. 7 datasheet.
Technical Context
The NCV8177BMX120TCG implements a PMOS pass transistor architecture enabling ultra-low quiescent current (60 µA typ.) and fast transient response without external compensation. Its adaptive ground current behavior maintains efficiency across load conditions while supporting stable operation with only 1 µF ceramic output capacitance.
Unlike standard LDOs, it integrates logic-level enable (active-H) with internal 300 nA pull-down, thermal shutdown (175°C), over-current protection, and - critically for the 'B' variant - no output discharge function. This distinguishes it from the 'A' variant (e.g., NCV8177AMX120TCG), which includes a 60 Ω discharge path.
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 supply for low-voltage microcontrollers and sensors. |
| Max Output Current | 500 mA continuous - supports moderate-power RF ICs and camera modules without thermal derating under typical PCB copper area. |
| Dropout Voltage | 200 mV typ. at 500 mA (VOUT = 1.8 V); for 1.20 V output, measured dropout is 130–190 mV depending on load - enables operation from single-cell Li-ion or 1.8 V rails. |
| Quiescent Current | 60 µA typ. at no load - minimizes standby power in always-on automotive subsystems like CAN wake-up receivers. |
| PSRR | 75 dB @ 1 kHz - suppresses ripple from noisy switching supplies feeding sensitive analog/RF circuitry. |
| Thermal Shutdown | 175°C activation with 20°C hysteresis - provides robust fault recovery in enclosed automotive enclosures without latch-up. |
| 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
NCV8177BMX120TCG is packaged in XDFN4 (Case 711AJ), a 4-pin wettable flank–compatible leadless package with exposed thermal pad. The pinout is validated per datasheet Figure 1 and Pin Function Description table (page 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Regulated output voltage | Main power rail output; must be decoupled with ≥1 µF X7R/X5R ceramic capacitor placed adjacent to pin. |
| 2 (GND) | Power supply ground | Reference node for regulation and feedback; tied directly to PCB ground plane and exposed pad for thermal conduction. |
| 3 (IN) | Input voltage supply | Accepts 1.6–5.5 V; requires ≥1 µF ceramic input capacitor close to pin to suppress source impedance effects. |
| 4 (EN) | Enable control input | Active-high logic interface (VENH = 1.0 V min); internal 300 nA pull-down ensures default OFF state if left floating. |
| EPAD | Exposed thermal pad | Must be soldered to solid ground plane - critical for achieving RJA = 223°C/W and sustaining 500 mA in ambient ≤85°C. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (−40°C to +125°C TA) - certified for engine bay–adjacent and infotainment applications. |
| No output discharge | 'B' variant excludes internal discharge FET - prevents unintended discharge of downstream capacitors during disable, preserving state in memory-backed systems. |
| Stability with small ceramics | Guaranteed stable with 1 µF X7R/X5R output capacitor - eliminates need for larger, higher-ESR tantalum caps and reduces BOM count. |
| Low-noise regulation | 54 µVRMS (10 Hz–100 kHz) - meets noise floor requirements for image sensor biasing and RF synthesizer VCO supplies. |
| Fast transient response | Load step recovery <10 µs (per Fig. 27) - maintains regulation during burst-mode processor activity in telematics units. |
Applications
| Automotive Infotainment Power | Camera Module Core Supply |
|---|---|
|
Use Scenario: Providing clean 1.20 V supply to SoC cores and DDR I/O in head-unit mainboards operating in vehicle cabin environments (−40°C to +85°C). IC Role / Device Role / Timing Role: Primary LDO regulator delivering tightly regulated, low-noise voltage to digital logic domains requiring precise voltage margins. Use Value: Maintains ±0.8% output accuracy across temperature and line/load transients, preventing timing violations in high-speed interfaces. |
Use Scenario: Powering 1.2 V image signal processors (ISPs) and MIPI CSI-2 transceivers in rear-view and surround-view cameras. IC Role / Device Role / Timing Role: Low-noise, fast-response voltage source ensuring stable clock domain operation and minimizing pixel noise. Use Value: 54 µVRMS noise and 75 dB PSRR prevent switching noise from DC-DC converters from degrading image SNR. |
| Instrument Cluster Microcontroller | Automotive Sensor Signal Conditioning |
|
Use Scenario: Supplying 1.20 V to ARM Cortex-M7 microcontrollers in digital instrument clusters with CAN FD communication. IC Role / Device Role / Timing Role: Always-on LDO enabling low-power sleep modes while maintaining RTC and wake-up logic integrity. Use Value: 60 µA quiescent current extends battery runtime during ignition-off periods without compromising start-up latency. |
Use Scenario: Biasing precision analog front-ends (AFEs) for pressure, temperature, and position sensors in powertrain and chassis modules. IC Role / Device Role / Timing Role: Stable reference voltage source for ADC reference buffers and op-amp rails in measurement chains. Use Value: High PSRR and low dropout allow direct regulation from 3.3 V or 5 V system rails, eliminating intermediate regulators and reducing thermal load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8177AMX120TCG | Same electrical specs but includes output discharge (60 Ω path); 'A' variant marking code VC. | Required where rapid output discharge is needed after shutdown (e.g., to reset downstream logic or meet safety discharge standards). | Select NCV8177AMX120TCG only if active discharge is explicitly required; otherwise NCV8177BMX120TCG avoids unintended discharge in state-retentive designs. |
| TPS7A0512PDBVR | Lower IQ (25 µA), smaller X2SON-4 (0.8 mm × 0.8 mm), but lower PSRR (60 dB @ 1 kHz) and no AEC-Q100 qualification. | Suitable for non-automotive portable electronics; lacks thermal shutdown hysteresis and automotive reliability documentation. | Choose TPS7A0512PDBVR for consumer-grade space-constrained apps; NCV8177BMX120TCG remains mandatory for automotive PPAP-compliant designs. |
Compared with NCV8177AMX120TCG, the NCV8177BMX120TCG eliminates output discharge to preserve downstream voltage states, while versus TPS7A0512PDBVR it trades slightly higher IQ for guaranteed AEC-Q100 compliance, higher PSRR, and automotive thermal robustness - essential for under-hood and infotainment deployment.
Availability
NCV8177BMX120TCG is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and instrument cluster electronics requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle support.
Supply support for NCV8177BMX120TCG 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 NCV8177BMX120TCG belongs to the NCV8177 automotive LDO family, designed specifically to deliver high-accuracy, low-noise, and fast-transient power for RF-sensitive and safety-critical subsystems in modern vehicles.
FAQ
What is the output voltage tolerance of the NCV8177BMX120TCG over temperature?
The NCV8177BMX120TCG guarantees ±0.8% output voltage accuracy at +25°C and ±1.0% over the full automotive temperature range (−40°C to +125°C junction), as specified in the Electrical Characteristics table (page 4) of the NCV8177/D Rev. 7 datasheet. This tolerance applies strictly to the 1.20 V nominal output version.
Does the NCV8177BMX120TCG include output discharge functionality?
No, the NCV8177BMX120TCG does not include output discharge. The 'B' suffix explicitly denotes the absence of the internal discharge FET - unlike the 'A' variant (e.g., NCV8177AMX120TCG), which provides a 60 Ω discharge path when disabled. This makes NCV8177BMX120TCG appropriate for applications requiring output voltage retention after shutdown.
What package type and dimensions does the NCV8177BMX120TCG use?
The NCV8177BMX120TCG uses the XDFN4 package (Case 711AJ): 1.0 mm × 1.0 mm × 0.4 mm body with 0.65 mm pitch, 4 I/O pins plus exposed thermal pad. Package dimensions and soldering footprint are fully detailed on page 13 of the NCV8177/D Rev. 7 datasheet.
Can the NCV8177BMX120TCG operate with a 1.6 V input voltage while delivering 1.20 V output?
Yes, the NCV8177BMX120TCG supports input voltages as low as 1.6 V, and its dropout voltage at 1.20 V output is 130–190 mV (depending on load), meaning it can regulate down to 1.20 V with as little as ~1.33 V headroom. At 1.6 V input, it sustains full 500 mA output capability per the Dropout Voltage vs. Output Current curves (Fig. 8–10).
Is the NCV8177BMX120TCG qualified for automotive applications?
Yes, the NCV8177BMX120TCG carries the NCV prefix indicating automotive qualification: it is AEC-Q100 Grade 1 qualified (−40°C to +125°C ambient), PPAP-capable, and manufactured under IATF 16949. This is explicitly stated in the Features section (page 1) and Ordering Information (page 11) of the NCV8177/D Rev. 7 datasheet.
NCV8177BMX120TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
NCV8177BMX120TCG FAQ
1.How can I place an order for NCV8177BMX120TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8177BMX120TCG 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 NCV8177BMX120TCG reliable?
The price and inventory of NCV8177BMX120TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8177BMX120TCG is usually 5 days.
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NCV8177BMX120TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8177BMX120TCG 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 NCV8177BMX120TCG?
For technical support, including NCV8177BMX120TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8177BMX120TCG requirements.
6.How does Aetrix verify that NCV8177BMX120TCG is sourced from the original manufacturer or authorized distributors?
All NCV8177BMX120TCG 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 NCV8177BMX120TCG meets industry standards.
7.What is the process for return or replacement of NCV8177BMX120TCG?
All NCV8177BMX120TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8177BMX120TCG, 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 NCV8177BMX120TCG part is unused and in its original packaging.
Return procedure for NCV8177BMX120TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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