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onsemi NCV571SN10T1G
- Part No.:
- NCV571SN10T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCV571SN10T1G.pdf
- Description:
- IC REG LINEAR 1V 150MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,813
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Product details
Overview
NCV571SN10T1G from onsemi is an automotive-grade, fixed-output low-dropout linear regulator delivering 1.0 V at up to 150 mA with ultra-low 4.0 µA typical quiescent current, integrated thermal shutdown and current limiting, and designed for battery-powered instrumentation requiring stable low-voltage bias under −40 °C to +125 °C operation.
For engineers reviewing the NCV571SN10T1G datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (TSOP-5), confirmed enable-controlled standby functionality, output accuracy (±3% at 25 °C), dropout voltage (550 mV typ. at 10 mA), and AEC-Q100 qualification status - all critical for automotive power rail design validation.
Technical Context
The NCV571SN10T1G implements a PMOS pass transistor architecture enabling low dropout and high PSRR across load and line variations. Its internal error amplifier compares feedback from a precision voltage reference against the regulated 1.0 V output, driving the pass element to maintain regulation within ±3% over temperature and load.
Enable control is implemented via a logic-compatible input (VTH(EN) = 1.3 V turn-on, 0.3 V turn-off) that places the device in ultra-low-IQ standby (<0.1 µA), while thermal shutdown activates at +150 °C junction temperature and current limit protects against short-circuit faults up to 600 mA peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0 V ±3% at 25 °C; ±4% over full −40 °C to +125 °C range - ensures stable core/bias rail for microcontrollers and sensors. |
| Max Input Voltage | 12 V - supports direct connection to automotive 12 V battery rails with transient margin. |
| Dropout Voltage | 550 mV typical at 10 mA load - enables regulation down to Vin = 1.55 V, critical for deep battery discharge operation. |
| Quiescent Current | 4.0 µA typical (Enable = Vin); <0.1 µA in shutdown - extends battery life in always-on vehicle modules. |
| Output Current | 150 mA continuous - sufficient for powering MCU cores, CAN transceivers, or small sensor subsystems. |
| Accuracy Tempco | 100 ppm/°C - limits output drift to <10 mV over 85 °C ambient swing, improving ADC reference stability. |
| ESD Rating | HBM 2000 V, CDM 1000 V - meets automotive board-level ESD robustness requirements without external protection. |
Pinout & Package
NCV571SN10T1G is housed in a Pb-free TSOP-5 surface-mount package (Case 483, 3.00 × 1.50 × 0.95 mm), optimized for space-constrained automotive PCBs with exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vout | Regulated 1.0 V output; requires ≥0.1 µF ceramic decoupling capacitor placed adjacent to pin. |
| 2 | GND | Power ground return; must be low-impedance connection to minimize noise coupling into regulation loop. |
| 3 | NC | No internal connection; manufacturer recommends tying to GND to reduce EMI susceptibility. |
| 4 | Enable | Active-high digital control input; drives regulator ON/OFF; if unused, must be tied to Vin (not left floating). |
| 5 | Vin | Positive input supply (0–12 V); requires local 0.1 µF ceramic input capacitor near this pin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Qualified for automotive applications per Grade 1 (−40 °C to +125 °C), including PPAP support and unique site controls. |
| Ultra-Low IQ | 4.0 µA typical operating current enables >10-year battery life in always-on telematics modules. |
| Stable with Ceramic Capacitors | No minimum ESR requirement; works with 0.1 µF–10 µF X5R/X7R ceramics - eliminates need for costly tantalum or polymer caps. |
| Integrated Protection | Thermal shutdown (150 °C TJ), current limit (600 mA peak), and reverse-voltage safe input - reduces BOM count by eliminating discrete protection devices. |
| Low Output Voltage Option | 1.0 V fixed output supports modern low-power MCUs (e.g., ARM Cortex-M0+/M4 cores) and DDR I/O rails. |
Applications
| Automotive Body Control Module (BCM) | Infotainment System Power Management |
|---|---|
Use Scenario: Supplies 1.0 V bias to microcontroller I/O banks and CAN FD transceiver logic in door module ECUs. IC Role / Device Role / Timing Role: Primary low-noise LDO for digital logic rail, enabling clean interface signaling between MCU and communication peripherals. Use Value: Ultra-low IQ prevents excessive parasitic drain during vehicle sleep mode; AEC-Q100 qualification ensures reliability over 15-year service life. |
Use Scenario: Powers audio codec and display driver ICs in head-unit systems where EMI-sensitive analog sections coexist with digital processors. IC Role / Device Role / Timing Role: Local point-of-load regulator providing isolated, low-ripple 1.0 V supply to mixed-signal components. Use Value: High PSRR and ceramic-capacitor stability suppress switching noise from adjacent DC-DC converters, preserving audio SNR. |
| ADAS Camera Sensor Biasing | Telematics Control Unit (TCU) Real-Time Clock |
Use Scenario: Delivers precise 1.0 V to image sensor analog front-end (AFE) and ISP core logic in surround-view camera modules. IC Role / Device Role / Timing Role: Precision voltage source maintaining sensor gain linearity and ADC reference integrity across temperature extremes. Use Value: ±3% output accuracy and 100 ppm/°C tempco ensure consistent exposure calibration and color fidelity from −40 °C to +125 °C. |
Use Scenario: Provides always-on 1.0 V supply to RTC and backup SRAM in cellular-connected TCU during main system power-down. IC Role / Device Role / Timing Role: Standby-mode LDO activated only when main 3.3 V rail is off, minimizing quiescent loss. Use Value: <0.1 µA shutdown current extends backup battery life beyond 5 years; enable pin allows synchronized wake-up with modem events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-IQ LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8170ASN100T1G | Higher IQ (25 µA typ.), same 1.0 V output, 200 mA rating, DFN6 package. | Lacks AEC-Q100 Grade 1 qualification; rated only to +105 °C ambient. | Acceptable for non-safety-critical industrial modules where extended temperature range is not required. |
| TLE42744G | Higher dropout (600 mV min), higher IQ (15 µA), integrated watchdog timer, PG pin. | Includes diagnostic features (power-good, reset) but no enable control; larger SOIC-8 footprint. | Suitable when system-level monitoring is needed, but adds complexity and layout area versus NCV571SN10T1G's minimalist solution. |
Compared with NCV571SN10T1G, NCV8170ASN100T1G trades automotive qualification for higher output current and smaller DFN6 footprint, while TLE42744G adds diagnostics at the cost of higher quiescent current and less flexible enable control - making NCV571SN10T1G optimal for space- and current-constrained AEC-Q100-compliant bias rails.
Availability
NCV571SN10T1G is available at Aetrix Electronics and suitable for automotive body electronics, infotainment power management, and ADAS sensor biasing requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for NCV571SN10T1G 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 innovation, delivering silicon solutions for automotive, industrial, cloud, and IoT applications with emphasis on functional safety and reliability.
The NCV571 series belongs to onsemi's automotive-qualified linear regulator product line, engineered specifically for low-power, high-stability biasing of microcontrollers, sensors, and communication interfaces in harsh-temperature vehicle environments.
FAQ
What is the maximum input voltage rating for the NCV571SN10T1G?
The NCV571SN10T1G has a maximum input voltage rating of 12 V, as specified in its Absolute Maximum Ratings table. This allows direct integration into standard 12 V automotive battery systems, including operation during cold-crank (down to ~6 V) and load-dump transients (with external clamping). Exceeding 12 V risks permanent damage to the internal PMOS pass transistor and protection circuits.
Does the NCV571SN10T1G require an external resistor divider on the Enable pin?
No, the NCV571SN10T1G does not require an external resistor divider on the Enable pin unless the control signal exceeds the Vin supply voltage. Its Enable input accepts voltages from −0.3 V to Vin + 0.3 V. If driven by a 3.3 V logic signal while Vin = 5 V or 12 V, direct connection is safe; only when Enable voltage > Vin is a divider needed to avoid violating the absolute maximum rating.
Is the NCV571SN10T1G pin-compatible with other variants in the NCV571 family?
Yes, all NCV571 variants in the TSOP-5 package - including NCV571SN08T1G (0.8 V), NCV571SN09T1G (0.9 V), and NCV571SN12T1G (1.2 V) - share identical pinout, footprint, and electrical interface. This enables voltage-scaling flexibility across designs without PCB revision, provided output capacitor and layout meet stability requirements for each Vout.
What is the thermal resistance (RJA) of the NCV571SN10T1G in its TSOP-5 package?
The NCV571SN10T1G in TSOP-5 package has a typical junction-to-ambient thermal resistance (RJA) of 250 °C/W under standard test conditions (1 oz copper, 100 mm² pad area). This value assumes minimal copper spreading; actual board-level RJA improves significantly with added thermal vias and larger ground planes, enabling sustained 150 mA output at elevated ambient temperatures.
Can the NCV571SN10T1G be used with a 0.1 µF output capacitor?
Yes, the NCV571SN10T1G is explicitly characterized and stabilized for use with a minimum 0.1 µF ceramic output capacitor, as confirmed in both the datasheet's "Typical Application Schematic" and "Applications Information" section. Larger values (up to 10 µF) improve load-transient response and noise rejection without risk of oscillation due to zero-ESR tolerance.
NCV571SN10T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.65V @ 10mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- 8 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:
- 5-TSOP
NCV571SN10T1G FAQ
1.How can I place an order for NCV571SN10T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV571SN10T1G 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 NCV571SN10T1G reliable?
The price and inventory of NCV571SN10T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV571SN10T1G is usually 5 days.
3.What payment methods are accepted for NCV571SN10T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV571SN10T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV571SN10T1G?
NCV571SN10T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV571SN10T1G 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 NCV571SN10T1G?
For technical support, including NCV571SN10T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV571SN10T1G requirements.
6.How does Aetrix verify that NCV571SN10T1G is sourced from the original manufacturer or authorized distributors?
All NCV571SN10T1G 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 NCV571SN10T1G meets industry standards.
7.What is the process for return or replacement of NCV571SN10T1G?
All NCV571SN10T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV571SN10T1G, 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 NCV571SN10T1G part is unused and in its original packaging.
Return procedure for NCV571SN10T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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