My Inquiry
My Account
onsemi NCV612SQ18T1G
- Part No.:
- NCV612SQ18T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCV612SQ18T1G.pdf
- Description:
- IC REG LINEAR 1.8V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:4,356
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCV612SQ18T1G from onsemi is an automotive-grade CMOS low-dropout linear voltage regulator delivering a fixed 1.8 V output at up to 100 mA, featuring 40 µA typical quiescent current, 230 mV dropout at 100 mA, and AEC-Q100 qualification for use in battery-powered infotainment modules and sensor power rails.
For engineers reviewing the NCV612SQ18T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its −40 °C to +125 °C operating range, SC70-5 package footprint, enable-controlled standby mode, and compatibility with low-ESR ceramic output capacitors.
Technical Context
The NCV612SQ18T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/overcurrent protection circuits - enabling stable regulation without external compensation. Its ultra-low 40 µA quiescent current supports always-on subsystems in automotive ECUs where standby power budget is critical.
Designed for direct integration with ceramic decoupling (1.0 µF min), it achieves 100 ppm/°C output voltage temperature coefficient and 100 µVRMS output noise (100 Hz–100 kHz) while maintaining ±2.0% initial output accuracy across load and temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2.0% at 10 mA, maintained across −40 °C to +125 °C ambient |
| Max Output Current | 100 mA continuous; supports peak loads without dropout under typical automotive input conditions |
| Quiescent Current | 40 µA typical (IEN = VIN, IOUT = 1–100 mA); enables >1-year battery life in always-on vehicle sensors |
| Dropout Voltage | 230 mV at 100 mA and 1.8 V output; allows operation down to 2.03 V input in 12 V system post-regulation |
| Enable Threshold | VTH(HI) = 0.95 V, VTH(LO) = 0.3 V; compatible with 1.8 V/3.3 V logic without level-shifting |
| Thermal Protection | Internal shutdown at ~160 °C junction; recovers automatically after cooldown - prevents latch-up in enclosed modules |
| Package | SC70-5 (SOT-353), 1.25 mm × 2.1 mm footprint; optimized for space-constrained ADAS camera PCBs |
Pinout & Package
NCV612SQ18T1G is housed in the SC70-5 (SOT-353) surface-mount package - a micro-miniature 5-pin plastic case with 0.65 mm pitch, designed for high-density automotive PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply rail; accepts 2.03–6.0 V; requires local 1.0 µF ceramic decoupling |
| 2 | Gnd | Power ground reference; must be low-impedance connection to minimize noise coupling |
| 3 | Enable | Active-high digital control input; pulls device into <1 µA standby when driven <0.3 V |
| 4 | N/C | No internal connection; left floating or tied to Gnd per layout best practice |
| 5 | Vout | Regulated 1.8 V output; drives load directly; requires 1.0 µF ceramic capacitor within 2 mm |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Rated for automotive Grade 1 (−40 °C to +125 °C ambient), PPAP-capable with unique site controls |
| Ultra-Low IQ | 40 µA typical ensures minimal battery drain during vehicle sleep mode - critical for telematics modules |
| Ceramic-Cap Stable | Operates with 1.0 µF ceramic output capacitor (no ESR requirement); reduces BOM cost vs. tantalum alternatives |
| Low Dropout | 230 mV @ 100 mA enables use behind 3.3 V pre-regulators or in single-cell LiFePO4 systems |
| Integrated Protection | Thermal shutdown and current limiting prevent failure during short-circuit or overtemperature events |
Applications
| Infotainment Power Rail | ADAS Camera Core Supply |
|---|---|
Use Scenario: Providing clean 1.8 V bias to SoC I/O banks and DDR memory interfaces in head-unit modules. IC Role / Device Role / Timing Role: Primary LDO regulator supplying low-noise core voltage for high-speed digital interfaces. Use Value: 100 µVRMS output noise and ±2.0% accuracy ensure signal integrity and timing margin compliance in 1.8 V I/O domains. |
Use Scenario: Powering image signal processor (ISP) cores and MIPI CSI-2 transceivers in rear-view cameras. IC Role / Device Role / Timing Role: Fixed-output LDO delivering stable 1.8 V to noise-sensitive analog front-end and digital logic blocks. Use Value: 230 mV dropout and −40 °C to +125 °C operation support reliable startup and runtime in engine-bay-mounted cameras. |
| Automotive Sensor Node | Telematics Module Standby Supply |
Use Scenario: Regulating 1.8 V for MEMS accelerometer, gyroscope, and CAN transceiver logic in tire pressure monitoring systems (TPMS). IC Role / Device Role / Timing Role: Low-power LDO enabling always-on sensing with minimal quiescent draw. Use Value: 40 µA IQ extends CR2032 battery life beyond 5 years in unpowered vehicle states. |
Use Scenario: Supplying real-time clock (RTC), GPS assist circuitry, and cellular modem wake-up logic in connected car gateways. IC Role / Device Role / Timing Role: Enable-controlled LDO providing selective power gating to subsystems during deep-sleep cycles. Use Value: Active-high Enable pin with 0.95 V threshold integrates seamlessly with 1.8 V microcontroller GPIO without level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73318PDBVR | 300 mA output, 50 µA IQ, SOT-23-5 package (larger footprint), no AEC-Q100 rating | Targeted at industrial/commercial portable devices, not automotive qualified | Select if higher current or non-automotive qualification suffices and board area permits SOT-23 |
| TPS7A0518PDQNR | 200 mA output, 25 µA IQ, X2SON-4 package (no enable pin), ±1.5% accuracy | Lacks enable control and automotive qualification; suited for space-constrained consumer wearables | Choose only if enable functionality is unnecessary and AEC-Q100 is not required |
Compared with TLV73318PDBVR and TPS7A0518PDQNR, the NCV612SQ18T1G uniquely combines AEC-Q100 Grade 1 qualification, enable control in SC70-5, and 40 µA IQ - making it the only drop-in solution for automotive 1.8 V LDO requirements where footprint, qualification, and low-IQ are jointly constrained.
Availability
NCV612SQ18T1G is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics gateways requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for NCV612SQ18T1G 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 technologies for automotive, industrial, cloud, and IoT applications, with leadership in power management, imaging, and intelligent sensing.
The NCV612SQ18T1G belongs to onsemi's automotive-qualified linear regulator product line, engineered specifically for low-power, high-reliability subsystems in harsh-temperature vehicle environments.
FAQ
What is the maximum input voltage rating for the NCV612SQ18T1G?
The NCV612SQ18T1G supports an absolute maximum input voltage of 6.0 V. Exceeding this limit risks permanent damage. In normal operation, Vin must remain ≥ (Vout + dropout), i.e., ≥2.03 V for 1.8 V output at full load. The device includes internal protection against transient overvoltage up to specified limits per AEC-Q100 stress testing.
Does the NCV612SQ18T1G require an external pull-up resistor on the Enable pin?
No - the NCV612SQ18T1G does not require an external pull-up on the Enable pin. When unused, the Enable pin must be connected directly to Vin to ensure active operation. Pulling Enable low (<0.3 V) disables the regulator and reduces quiescent current to <1 µA. Internal biasing eliminates need for external resistors in most implementations.
Can the NCV612SQ18T1G operate with a 1.0 µF ceramic capacitor on the output?
Yes - the NCV612SQ18T1G is explicitly designed and characterized for stability with a minimum 1.0 µF ceramic output capacitor (X5R/X7R dielectric). Unlike older LDOs, it imposes no ESR requirement, simplifying design and reducing cost. Larger values (e.g., 2.2 µF) further improve load transient response without risk of oscillation.
Is the NCV612SQ18T1G pin-compatible with other variants in the NCV612 family?
Yes - all NCV612 variants (e.g., NCV612SQ30T1G, NCV612SQ33T1G) share identical SC70-5 pinout and electrical interface. Only the output voltage and marking code differ. This allows design reuse across multiple voltage rails without PCB revision, provided thermal and current requirements are verified per variant.
What is the thermal shutdown threshold of the NCV612SQ18T1G?
The NCV612SQ18T1G activates internal thermal shutdown at approximately 160 °C junction temperature. It remains latched off until junction temperature falls below the hysteresis threshold (~140 °C), then resumes regulation automatically. This protects against sustained overload or poor heatsinking in sealed automotive enclosures.
NCV612SQ18T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.56V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- 90 µA
- 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:
- SC-88A (SC-70-5/SOT-353)
NCV612SQ18T1G FAQ
1.How can I place an order for NCV612SQ18T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV612SQ18T1G 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 NCV612SQ18T1G reliable?
The price and inventory of NCV612SQ18T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV612SQ18T1G is usually 5 days.
3.What payment methods are accepted for NCV612SQ18T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV612SQ18T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV612SQ18T1G?
NCV612SQ18T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV612SQ18T1G 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 NCV612SQ18T1G?
For technical support, including NCV612SQ18T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV612SQ18T1G requirements.
6.How does Aetrix verify that NCV612SQ18T1G is sourced from the original manufacturer or authorized distributors?
All NCV612SQ18T1G 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 NCV612SQ18T1G meets industry standards.
7.What is the process for return or replacement of NCV612SQ18T1G?
All NCV612SQ18T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV612SQ18T1G, 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 NCV612SQ18T1G part is unused and in its original packaging.
Return procedure for NCV612SQ18T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCV612SQ18T1G Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
