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onsemi NCV8187AMTWADJTAG
- Part No.:
- NCV8187AMTWADJTAG
- Manufacturer:
- onsemi
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
NCV8187AMTWADJTAG.pdf
- Description:
- IC REG LIN POS ADJ 1.2A 6-WDFNW
- Quantity:
- Payment:
- Shipping:
Inventory:4,116
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Product details
Overview
NCV8187AMTWADJTAG from onsemi is an automotive-grade adjustable LDO linear voltage regulator delivering up to 1.2 A output current with 30 µA typical quiescent current, ±2% output voltage accuracy over full load/line/temperature, and 75 dB PSRR at 1 kHz. It features Power Good open-drain output, thermal shutdown, current limiting, soft-start, and active output discharge - designed for power rail stabilization in infotainment systems and robotic vision modules.
For engineers reviewing the NCV8187AMTWADJTAG datasheet, pinout, applications, or equivalent options, key selection criteria include its WDFNW6 2×2 mm wettable flank package, ADJ feedback architecture supporting 0.8 V–5.2 V output, low-noise (15 µVRMS) performance, and AEC-Q100 qualification for automotive use.
Technical Context
The NCV8187AMTWADJTAG implements a precision bandgap reference (0.8 V nominal) with external resistor divider feedback via the ADJ pin, enabling programmable output voltages from 0.8 V to 5.2 V. Its internal error amplifier drives a PMOS pass transistor with integrated soft-start circuitry to limit inrush current during enable transitions.
Power Good functionality uses an internal comparator monitoring regulated output voltage against 92% (rising) and 80% (falling) thresholds, asserting open-drain PG low when VOUT deviates beyond those limits. Thermal shutdown activates at 170°C with 15°C hysteresis, and current limiting protects against overload and short-circuit conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.2 A max - supports high-current digital loads like SoC cores and image sensors without external boost stages |
| Quiescent Current | 30 µA typ. - enables always-on subsystems in automotive body control modules with minimal battery drain |
| Output Voltage Accuracy | ±2% over full load/line/temperature - ensures reliable logic-level compliance for 1.8 V/3.3 V I/O rails |
| PSRR | 75 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters feeding sensitive analog circuits |
| Dropout Voltage | 150 mV typ. at 3.3 V output / 1.2 A - allows operation from low-headroom sources such as partially discharged 3.7 V Li-ion batteries |
| Output Noise | 15 µVRMS (10 Hz–100 kHz) - meets low-noise requirements for ADC reference supplies and RF front-end biasing |
| Enable Threshold | VEN_HI = 0.9 V min., VEN_LO = 0.3 V max. - compatible with standard 1.8 V/3.3 V GPIO outputs without level-shifting |
Pinout & Package
NCV8187AMTWADJTAG is packaged in a WDFNW6 2×2 mm wettable flank (WF) leadless package with exposed thermal pad, optimized for automated optical inspection (AOI) and improved solder joint reliability in automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input supply connection | Accepts 1.5–5.5 V input; requires ≥1 µF ceramic decoupling capacitor to GND for stability and transient response |
| OUT | Regulated output node | Delivers adjustable output (0.8–5.2 V); requires ≥10 µF ceramic capacitor to GND for loop stability and noise filtering |
| GND | Power ground reference | Primary return path for input/output currents; must be connected directly to PCB thermal pad for optimal thermal performance |
| EN | Enable control input | Active-high logic input; drives regulator ON above 0.9 V, OFF below 0.3 V; draws ≤100 nA when high |
| ADJ | Feedback voltage input | Connects to resistor divider from OUT to GND; sets output voltage per VOUT = VREF(1 + R1/R2), where VREF = 0.8 V |
| PG | Power Good open-drain output | Asserts low when VOUT is within 80–92% of target; requires external 10–100 kΩ pull-up to VOUT or VIN |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Grade 1 (−40°C to +125°C ambient) - certified for under-hood and dashboard-mounted automotive electronics |
| Wettable flank package | WDFNW6 2×2 mm with edge-plated leads - enables automated solder joint inspection and improves mechanical reliability in thermal cycling environments |
| Active output discharge | 120 Ω typical discharge path - rapidly discharges output capacitance upon disable, preventing back-powering of downstream circuitry |
| Stable with small ceramics | Supports 10 µF X5R/X7R output capacitors - eliminates need for large, costly tantalum or polymer caps in space-constrained designs |
| Low-noise regulation | 15 µVRMS integrated noise - suitable for powering precision analog signal chains, clock buffers, and RF synthesizers |
Applications
| Infotainment Power Rail | Robotic Vision Sensor Supply |
|---|---|
Use Scenario: Providing clean, stable 1.8 V and 3.3 V rails to display controllers, touch processors, and audio codecs in automotive dashboards. IC Role / Device Role / Timing Role: Primary post-regulator for noise-sensitive digital subsystems requiring tight voltage tolerance and fast transient response. Use Value: ±2% accuracy and 75 dB PSRR prevent display flicker and audio artifacts caused by EMI from nearby switching regulators or CAN transceivers. |
Use Scenario: Powering high-resolution CMOS image sensors and ISP processors in autonomous vehicle perception modules. IC Role / Device Role / Timing Role: Low-noise bias supply for analog front-end (AFE) and PLL reference circuits in camera timing chains. Use Value: 15 µVRMS output noise minimizes sensor readout noise floor, preserving dynamic range and SNR in low-light imaging. |
| Wireless Charging Base Station | Modular Dashboard Display |
Use Scenario: Generating auxiliary 5.0 V and 3.3 V rails for MCU, communication ICs, and LED drivers in Qi-compliant charging pads. IC Role / Device Role / Timing Role: Secondary LDO for isolated logic domains requiring independent power sequencing and fault reporting. Use Value: Power Good output enables precise power-up coordination with main DC-DC controller, ensuring proper initialization of NFC and BLE subsystems. |
Use Scenario: Delivering configurable 0.8–5.2 V outputs across interchangeable display modules with varying backlight and TCON voltage requirements. IC Role / Device Role / Timing Role: Programmable voltage source supporting multiple panel variants using single BOM part. Use Value: Adjustable ADJ architecture eliminates need for multiple fixed-output LDO SKUs, reducing inventory complexity and design reuse effort. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73318PDBVR | Fixed 1.8 V output; 300 mA max; 40 µA IQ; SOT-23-5 package | Limited to single-voltage applications; lacks PG output and adjustable capability | Choose for cost-sensitive, low-current non-automotive designs where footprint and simplicity outweigh programmability |
| NCP114AMX180TCG | Fixed 1.8 V; 300 mA; 25 µA IQ; DFN6 2×2 mm; no PG or active discharge | No power sequencing support; not AEC-Q100 qualified; lower current rating | Select for industrial or consumer portable devices needing ultra-low IQ but no automotive qualification or system-level monitoring |
Compared with TLV73318PDBVR and NCP114AMX180TCG, the NCV8187AMTWADJTAG provides higher output current (1.2 A vs. ≤300 mA), automotive qualification, Power Good signaling, and full adjustability - making it uniquely suited for safety-critical, multi-rail automotive subsystems requiring robust power management.
Availability
NCV8187AMTWADJTAG is available at Aetrix Electronics and suitable for infotainment systems, robotic vision modules, wireless charging base stations, and modular dashboard displays requiring stable component supply with automotive-grade reliability and traceable sourcing.
Supply support for NCV8187AMTWADJTAG 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 (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV8187AMTWADJTAG belongs to onsemi's automotive-qualified LDO portfolio, engineered specifically for demanding power rail stabilization in next-generation vehicle electronics where low quiescent current, high accuracy, and functional safety readiness are critical.
FAQ
What is the minimum input voltage required for NCV8187AMTWADJTAG to regulate a 3.3 V output?
The NCV8187AMTWADJTAG requires a minimum input voltage of 3.45 V to maintain regulation at 3.3 V output, based on its maximum dropout voltage of 150 mV at that condition. At 1.2 A load and 150°C junction temperature, dropout may rise to 220 mV, so 3.52 V input is recommended for worst-case margin. Input voltage must remain within the 1.5–5.5 V operating range specified in the datasheet.
How does the ADJ pin function in NCV8187AMTWADJTAG, and what resistor values are recommended?
The ADJ pin on NCV8187AMTWADJTAG connects to the feedback node of an external resistor divider between OUT and GND, setting output voltage per VOUT = 0.8 V × (1 + R1/R2). To minimize accuracy error from ADJ pin bias current (~300 nA), onsemi recommends R1 and R2 values below 500 kΩ. For example, a 1.8 V output uses R1 = 120 kΩ and R2 = 96 kΩ.
Does NCV8187AMTWADJTAG support active output discharge, and how is it implemented?
Yes, NCV8187AMTWADJTAG includes active output discharge with a typical resistance of 120 Ω between OUT and GND when disabled (EN = low). This feature rapidly discharges output capacitance, preventing back-powering of downstream ICs and ensuring safe power-down sequencing in multi-rail systems - critical for automotive microcontroller reset integrity.
What is the purpose of the Power Good (PG) output on NCV8187AMTWADJTAG, and how should it be connected?
The PG output on NCV8187AMTWADJTAG is an open-drain signal that goes low when VOUT falls below 80% or rises above 92% of its target value. It requires an external 10–100 kΩ pull-up resistor - connected to either VOUT (for accurate sequencing) or VIN (for wider voltage compatibility). PG enables MCU-based power monitoring and fault detection in safety-critical applications.
Is NCV8187AMTWADJTAG qualified for automotive applications, and what standards does it meet?
Yes, NCV8187AMTWADJTAG carries the NCV prefix indicating automotive qualification and is AEC-Q100 Grade 1 qualified (−40°C to +125°C ambient). It is PPAP-capable and manufactured in onsemi's IATF 16949-certified facilities. The device also complies with RoHS, Pb-free, and halogen-free requirements per JEDEC J-STD-020 and JESD22-A114/A115 ESD standards.
NCV8187AMTWADJTAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5.2V
- Voltage Dropout (Max):
- 0.495V @ 1.2A
- Current - Output:
- 1.2A
- Current - Quiescent (Iq):
- 45 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 6-WDFNW (2x2)
NCV8187AMTWADJTAG FAQ
1.How can I place an order for NCV8187AMTWADJTAG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8187AMTWADJTAG 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 NCV8187AMTWADJTAG reliable?
The price and inventory of NCV8187AMTWADJTAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8187AMTWADJTAG is usually 5 days.
3.What payment methods are accepted for NCV8187AMTWADJTAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8187AMTWADJTAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8187AMTWADJTAG?
NCV8187AMTWADJTAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8187AMTWADJTAG 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 NCV8187AMTWADJTAG?
For technical support, including NCV8187AMTWADJTAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8187AMTWADJTAG requirements.
6.How does Aetrix verify that NCV8187AMTWADJTAG is sourced from the original manufacturer or authorized distributors?
All NCV8187AMTWADJTAG 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 NCV8187AMTWADJTAG meets industry standards.
7.What is the process for return or replacement of NCV8187AMTWADJTAG?
All NCV8187AMTWADJTAG units undergo pre-shipment inspection (PSI). If there is an issue with NCV8187AMTWADJTAG, 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 NCV8187AMTWADJTAG part is unused and in its original packaging.
Return procedure for NCV8187AMTWADJTAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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