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onsemi NCV571SN09T1G
- Part No.:
- NCV571SN09T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCV571SN09T1G.pdf
- Description:
- IC REG LINEAR 0.9V 150MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,599
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Product details
Overview
NCV571SN09T1G from onsemi is an automotive-grade, fixed-output low-dropout linear regulator delivering 150 mA at 0.9 V with ultra-low quiescent current (4.0 µA typical), 3.0% output voltage accuracy, and operation over −40 °C to +125 °C. It integrates PMOS pass transistor, thermal shutdown, current limit, and enable control - designed for battery-powered instrumentation and camera modules where standby power and thermal robustness are critical.
For engineers reviewing the NCV571SN09T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its 0.9 V output, TSOP-5 package footprint, AEC-Q100 qualification, dropout voltage (≤850 mV at 10 mA), and compatibility with 0.1 µF ceramic output capacitors.
Technical Context
The NCV571SN09T1G implements a PMOS-based LDO architecture with internal voltage reference, error amplifier, and protection circuits including thermal shutdown and current limiting. Its enable input supports logic-level control (VTH(EN) = 0.3 V to 1.3 V), and it operates across 0–12 V input range while maintaining regulation down to 0.9 V output.
Designed for automotive environments, it meets AEC-Q100 Grade 1 requirements and features ESD robustness (2000 V HBM), stable operation with low-ESR ceramic capacitors, and no minimum load requirement - enabling use in intermittent-power sensor nodes and always-on subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 0.9 V ±3% at 25 °C; ±4% over full automotive temperature range (−40 °C to +125 °C) |
| Max Input Voltage | 12 V - supports wide-input battery systems including 9 V nominal and 12 V automotive rails |
| Quiescent Current | 4.0 µA typical - enables >1-year battery life in low-duty-cycle portable instruments |
| Dropout Voltage | ≤850 mV at 10 mA - ensures regulation even when input drops to 1.75 V |
| Output Current | 150 mA continuous - sufficient for powering microcontrollers, image sensors, and analog front-ends |
| Thermal Range | −40 °C to +125 °C junction - qualified for under-hood and cabin-mounted automotive electronics |
| Enable Threshold | Logic-compatible: turn-on at ≥1.3 V, turn-off at ≤0.3 V - compatible with 1.8 V/3.3 V GPIO without level shifters |
Pinout & Package
NCV571SN09T1G is housed in a Pb-free TSOP-5 surface-mount package (Case 483, 3.00 × 1.50 × 0.95 mm) with exposed pad not present. Pin 2 is GND; Pin 3 is Enable; Pin 4 is VOUT; Pin 5 is NC (recommended tied to GND); Pin 1 is VIN.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Positive supply input - accepts 0–12 V; must be decoupled with ≥0.1 µF ceramic capacitor |
| 2 | GND | Power ground reference - primary return path for load and quiescent current |
| 3 | Enable | Active-high digital control - pulls device into <1 µA shutdown when low; connect to VIN if unused |
| 4 | VOUT | Regulated 0.9 V output - drives load up to 150 mA; stable with 0.1 µF ceramic capacitor |
| 5 | NC | No internal connection - recommended to tie to GND for mechanical stability and noise reduction |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 4.0 µA typical - extends battery runtime in always-on monitoring circuits without compromising startup speed |
| AEC-Q100 Qualified | Grade 1 (−40 °C to +125 °C) - validated for automotive power domains including infotainment and ADAS sensor supplies |
| Stable with 0.1 µF Ceramic Cap | No ESR requirement - eliminates need for bulkier tantalum or aluminum electrolytic capacitors, reducing BOM cost and board area |
| Integrated Protection | Thermal shutdown + current limit - prevents damage during overload or ambient temperature excursions without external circuitry |
| Low Dropout at Light Load | 730 mV typical dropout at 10 mA - maintains regulation in deep-battery-discharge scenarios common in portable cameras |
Applications
| Automotive Camera Modules | Portable Medical Sensors |
|---|---|
Use Scenario: Powering CMOS image sensors and ISP processors in rear-view or surround-view cameras operating in vehicle cabins or under-hood enclosures. IC Role / Device Role / Timing Role: Primary 0.9 V supply rail regulator with enable control for power sequencing and thermal-aware shutdown. Use Value: AEC-Q100 qualification ensures reliability across temperature extremes; 4.0 µA IQ minimizes parasitic drain during vehicle sleep mode. | Use Scenario: Supplying ultra-low-power biosignal acquisition ICs (e.g., ECG/PPG front-ends) in handheld diagnostic devices powered by coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Precision 0.9 V bias source enabling high-resolution ADC operation while preserving battery longevity. Use Value: ±3% output accuracy and 100 ppm/°C tempco ensure stable reference for analog signal chains; TSOP-5 footprint simplifies compact PCB layout. |
| Industrial Handheld Testers | Smart IoT Edge Nodes |
Use Scenario: Regulating power for microcontroller cores and precision op-amps in portable multimeters and insulation testers used in field service. IC Role / Device Role / Timing Role: Low-noise, low-IQ LDO supplying clean 0.9 V to mixed-signal SoCs during battery-only operation. Use Value: 0.1 µF ceramic stability eliminates ESR-related oscillation risk; 12 V max input accommodates 9 V alkaline stack inputs. | Use Scenario: Providing regulated 0.9 V to ultra-low-power wireless SoCs (e.g., Bluetooth LE, Zigbee) in battery-operated environmental monitors deployed for years without maintenance. IC Role / Device Role / Timing Role: Always-on system regulator with enable pin used for MCU-controlled deep-sleep entry/exit. Use Value: 4.0 µA quiescent current directly translates to multi-year operational life on a single CR2032 cell; TSOP-5 allows automated assembly in space-constrained modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8170ASN090T1G | Higher IQ (12 µA typ), same 0.9 V output, 200 mA rating, DFN6 package | Supports higher load current but consumes >2× more quiescent current | Select when 200 mA output is required and 12 µA IQ is acceptable in the system budget |
| TLV70710PDBVR | 0.9 V option not available; closest is 1.0 V; 300 mA output; SOT-23-5 package; 25 µA IQ | Not pin-compatible; requires PCB redesign; lacks AEC-Q100 qualification | Consider only for non-automotive, cost-sensitive designs where 1.0 V is acceptable and higher IQ is tolerable |
Compared with NCV571SN09T1G, NCV8170ASN090T1G offers higher output current but trades off quiescent efficiency, while TLV70710PDBVR provides greater current headroom but sacrifices automotive qualification, low-IQ, and exact 0.9 V output - making NCV571SN09T1G optimal for thermally constrained, battery-limited automotive and portable instrumentation.
Availability
NCV571SN09T1G is available at Aetrix Electronics and suitable for automotive camera modules, portable medical sensors, and industrial handheld testers requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for NCV571SN09T1G 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV571 series belongs to onsemi's automotive-qualified LDO portfolio, engineered specifically for low-power, high-reliability subsystems in vehicles and portable equipment where ultra-low quiescent current and thermal resilience are mandatory.
FAQ
What is the maximum input voltage rating for NCV571SN09T1G?
The NCV571SN09T1G has a maximum input voltage rating of 12 V, as specified in its Absolute Maximum Ratings table. This allows direct integration into 9 V and 12 V battery-powered systems, including automotive 12 V rails with transient margin. Operation above 12 V risks permanent damage and is not supported under any conditions.
Does NCV571SN09T1G require an external pull-up resistor on the Enable pin?
No, NCV571SN09T1G does not require an external pull-up resistor on the Enable pin. If unused, the Enable pin must be connected directly to VIN to ensure active operation. Leaving it floating is prohibited per datasheet guidance, and a pull-up is unnecessary because the internal logic is designed for direct VIN tie-off.
Is NCV571SN09T1G pin-compatible with other variants in the NCV571 family?
Yes, all NCV571 variants in the TSOP-5 package - including NCV571SN08T1G, NCV571SN09T1G, NCV571SN10T1G, and NCV571SN12T1G - share identical pinout and package dimensions. Only the output voltage and marking code differ; no PCB layout change is needed when substituting between these fixed-voltage versions.
What output capacitor value is required for stable operation of NCV571SN09T1G?
The NCV571SN09T1G requires a minimum output capacitor of 0.1 µF ceramic, placed close to the VOUT and GND pins. Larger values improve load transient response and noise rejection but are not required for stability - the regulator is unconditionally stable with ceramic capacitors ranging from 0.1 µF to several µF and ESR from a few mΩ up to 3 Ω.
What protection features are integrated into NCV571SN09T1G?
The NCV571SN09T1G integrates thermal shutdown and current-limit protection circuits. When junction temperature exceeds safe limits or output current exceeds ~160–600 mA (depending on voltage version), the device automatically disables output to prevent damage. These functions operate independently of the Enable pin and require no external components.
NCV571SN09T1G 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):
- 0.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.75V @ 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
NCV571SN09T1G FAQ
1.How can I place an order for NCV571SN09T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV571SN09T1G 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 NCV571SN09T1G reliable?
The price and inventory of NCV571SN09T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV571SN09T1G is usually 5 days.
3.What payment methods are accepted for NCV571SN09T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV571SN09T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV571SN09T1G?
NCV571SN09T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV571SN09T1G 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 NCV571SN09T1G?
For technical support, including NCV571SN09T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV571SN09T1G requirements.
6.How does Aetrix verify that NCV571SN09T1G is sourced from the original manufacturer or authorized distributors?
All NCV571SN09T1G 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 NCV571SN09T1G meets industry standards.
7.What is the process for return or replacement of NCV571SN09T1G?
All NCV571SN09T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV571SN09T1G, 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 NCV571SN09T1G part is unused and in its original packaging.
Return procedure for NCV571SN09T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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