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onsemi NCV612SQ37T2G
- Part No.:
- NCV612SQ37T2G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCV612SQ37T2G.pdf
- Description:
- IC REG LINEAR 3.7V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:2,996
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Product details
Overview
NCV612SQ37T2G from onsemi is an automotive-grade CMOS low-dropout linear regulator delivering a fixed 3.7 V output at up to 100 mA, featuring ultra-low 40 µA quiescent current, 200 mV dropout at 100 mA, and AEC-Q100 qualification for under-hood power management in battery-powered ECUs.
For engineers reviewing the NCV612SQ37T2G 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 in space-constrained automotive modules.
Technical Context
The NCV612SQ37T2G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/current-limit protection circuits - enabling stable regulation without external compensation. Its architecture supports operation with input voltages from 0 V to 6.0 V and maintains output accuracy across wide temperature and load variations.
Designed specifically for automotive applications, it features an enable input with 0.95 V turn-on threshold and 0.3 V turn-off threshold, internal thermal shutdown at ~160 °C, and robust ESD protection (2000 V HBM). Output voltage tolerance is ±2.0% over −40 °C to +125 °C at 10 mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.7 V ±2.0% over −40 °C to +125 °C - ensures stable MCU core or sensor bias supply in automotive ambient conditions. |
| Max Output Current | 100 mA continuous - sufficient for powering low-power microcontrollers, CAN transceivers, or analog front-ends in body control modules. |
| Quiescent Current | 40 µA typical at no load - enables multi-year battery life in always-on vehicle subsystems such as door modules or occupancy sensors. |
| Dropout Voltage | 200 mV at 100 mA (3.7 V output) - allows regulation from 3.9 V input, supporting operation down to single-cell LiFePO₄ or degraded 12 V rail. |
| Input Voltage Range | 0 V to 6.0 V - accommodates cold-crank (≥4.5 V) and load-dump (≤6.0 V) transients when paired with upstream protection. |
| Enable Threshold | 0.95 V (turn-on), 0.3 V (turn-off) - compatible with standard GPIOs and supports deep-sleep wake-up sequencing in automotive SoCs. |
| Thermal Shutdown | ~160 °C junction - protects against sustained overload or poor PCB thermal design while allowing full rated power at +25 °C ambient. |
Pinout & Package
NCV612SQ37T2G is housed in the SC70-5 (SOT-353) surface-mount package - a 1.25 mm × 2.1 mm micro-miniature outline with 0.65 mm lead pitch, optimized for high-density automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply connection - must be decoupled with ≥1.0 µF ceramic capacitor placed adjacent to pin to suppress line transients. |
| 2 | Gnd | Power ground reference - requires low-impedance PCB plane connection to minimize noise coupling and ensure regulation stability. |
| 3 | Enable | Active-high digital control input - pulls device into <1 µA standby when driven <0.3 V; connect directly to Vin if unused. |
| 4 | N/C | No internal connection - left unconnected; not electrically tied to die or package substrate. |
| 5 | Vout | Regulated 3.7 V output - requires ≥1.0 µF ceramic output capacitor; ESR from 0.5 mΩ to 5 Ω is acceptable per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Rated for automotive Grade 1 (−40 °C to +125 °C) operation with PPAP capability - meets OEM requirements for engine bay and chassis electronics. |
| Ultra-low IQ | 40 µA typical quiescent current - reduces parasitic drain on vehicle battery during ignition-off states, critical for telematics and alarm systems. |
| Low-noise output | 100 µVRMS noise (100 Hz–100 kHz) - avoids interference with sensitive analog sensors or RF receivers sharing same power domain. |
| Stable with ceramic caps | Zero minimum ESR requirement - eliminates need for tantalum or aluminum electrolytic capacitors, improving reliability and reducing BOM cost. |
| Integrated protection | Current limit, thermal shutdown, and reverse-voltage protection - removes need for discrete protection components in compact ECU designs. |
Applications
| Body Control Module (BCM) | Occupancy Detection Sensor |
|---|---|
|
Use Scenario: Powering microcontroller, LIN transceiver, and door lock actuator drivers in a centralized vehicle body controller. IC Role / Device Role / Timing Role: Primary 3.7 V LDO supplying logic and interface circuitry; enables low-power sleep mode via Enable pin during vehicle rest state. Use Value: 40 µA quiescent current prevents excessive battery drain over weeks of parked operation, meeting OEM <100 µA total module leakage targets. |
Use Scenario: Providing regulated supply to MEMS accelerometer and ultrasonic transducer array in seat occupancy detection system. IC Role / Device Role / Timing Role: Clean, low-noise 3.7 V source for analog signal chain - minimizes measurement offset drift induced by supply ripple. Use Value: 100 µVRMS output noise ensures sub-millimeter sensing resolution remains unaffected by power supply artifacts. |
| Smart Rearview Mirror ECU | Automotive Camera Power Rail |
|
Use Scenario: Supplying image processor, display driver, and ambient light sensor in an integrated rearview mirror with ADAS functions. IC Role / Device Role / Timing Role: Secondary LDO generating 3.7 V from main 5 V rail - provides isolation from switching noise of DC/DC converters. Use Value: 200 mV dropout allows uninterrupted operation during 12 V battery sag to 4.2 V, maintaining camera feed and display functionality. |
Use Scenario: Biasing CIS image sensor and ISP in a surround-view camera module mounted in side mirror housing. IC Role / Device Role / Timing Role: Dedicated low-noise, thermally robust regulator for analog pixel array - operates reliably at +105 °C ambient. Use Value: −40 °C to +125 °C guaranteed operation ensures startup and function across all global climates, including desert and arctic environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73337PDBVR | 300 mA output, 60 µA IQ, SOT-23-5 package (larger footprint), no AEC-Q100 rating | Targeted at industrial/commercial portable devices - lacks automotive qualification and thermal derating data for +125 °C ambient | Select only for non-automotive designs where higher current and lower cost outweigh qualification needs. |
| TPS78037QDSERQ1 | AEC-Q100 Grade 1, 200 mA, 500 nA IQ, WSON-6 package, 250 mV dropout at 200 mA | Optimized for ultra-low-power always-on nodes (e.g., intrusion detection); higher cost and different pinout | Prefer when nanoamp-level quiescent current is mandatory and board layout allows WSON-6 rework. |
Compared with TLV73337PDBVR and TPS78037QDSERQ1, the NCV612SQ37T2G offers the optimal balance of automotive qualification, SC70-5 footprint, 100 mA capability, and proven 40 µA IQ performance - making it the most direct fit for cost- and space-sensitive body electronics requiring AEC-Q100 compliance.
Availability
NCV612SQ37T2G is available at Aetrix Electronics and suitable for automotive body control modules, occupancy detection sensors, smart mirror ECUs, and surround-view camera power rails requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NCV612SQ37T2G 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 specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications - with leadership in power management, imaging, and intelligent sensing.
The NCV612SQ37T2G belongs to onsemi's automotive-qualified LDO regulator family, designed specifically to replace legacy bipolar regulators in battery-powered vehicle subsystems where low IQ, small size, and AEC-Q100 reliability are mandatory.
FAQ
What is the maximum input voltage rating for the NCV612SQ37T2G?
The NCV612SQ37T2G has an absolute maximum input voltage rating of 6.0 V. Operation above this level risks permanent damage. In automotive applications, it is typically used with upstream transient voltage suppression to withstand load-dump events up to ISO 7637-2 Pulse 5a (75 V/350 ms), but the NCV612SQ37T2G itself must remain within its 0 V to 6.0 V input range at all times.
Does the NCV612SQ37T2G require an external pull-up resistor on the Enable pin?
No - the NCV612SQ37T2G does not require an external pull-up on the Enable pin. When unused, the datasheet specifies connecting Enable directly to Vin. Internal circuitry ensures proper startup without external biasing, simplifying schematic design and reducing component count in space-constrained automotive modules.
Can the NCV612SQ37T2G operate with a 3.9 V input to deliver 3.7 V at 100 mA?
Yes - the NCV612SQ37T2G has a typical dropout voltage of 200 mV at 100 mA and 3.7 V output, meaning it regulates stably with Vin ≥ 3.9 V. At 3.9 V input, it delivers full 100 mA while maintaining ±2.0% output accuracy across −40 °C to +125 °C, satisfying cold-crank and low-battery operational requirements.
Is the NCV612SQ37T2G still in active production despite discontinuation notices in older documents?
Yes - although some NCP612 variants were marked discontinued in Revision 5 (November 2025), the NCV612SQ37T2G remains an active, supported part per onsemi's current product status database and distributor inventory. Its NCV prefix and AEC-Q100 qualification confirm ongoing automotive program support.
What is the thermal resistance (RJA) of the NCV612SQ37T2G in standard JEDEC PCB layout?
The NCV612SQ37T2G has a specified RJA of 300 °C/W under standard JEDEC 2S2P test conditions (two-layer board, 1 in² copper). With 330 mW maximum dissipation at +25 °C ambient, this yields a worst-case junction temperature rise of 99 °C - well below the +150 °C absolute maximum, confirming safe operation at full 100 mA load in typical automotive PCB layouts.
NCV612SQ37T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.38V @ 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)
NCV612SQ37T2G FAQ
1.How can I place an order for NCV612SQ37T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV612SQ37T2G 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 NCV612SQ37T2G reliable?
The price and inventory of NCV612SQ37T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV612SQ37T2G is usually 5 days.
3.What payment methods are accepted for NCV612SQ37T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV612SQ37T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV612SQ37T2G?
NCV612SQ37T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV612SQ37T2G 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 NCV612SQ37T2G?
For technical support, including NCV612SQ37T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV612SQ37T2G requirements.
6.How does Aetrix verify that NCV612SQ37T2G is sourced from the original manufacturer or authorized distributors?
All NCV612SQ37T2G 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 NCV612SQ37T2G meets industry standards.
7.What is the process for return or replacement of NCV612SQ37T2G?
All NCV612SQ37T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV612SQ37T2G, 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 NCV612SQ37T2G part is unused and in its original packaging.
Return procedure for NCV612SQ37T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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