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onsemi NCP301LSN16T1
- Part No.:
- NCP301LSN16T1
- Manufacturer:
- onsemi
- Category:
- Supervisors
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP301LSN16T1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,035
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Product details
Overview
NCP301LSN16T1 from onsemi is an ultra-low-quiescent-current voltage detector IC designed as a reset controller for portable microprocessor systems. It features a 1.6 V ±2.0% undervoltage detection threshold, 0.08 V typical hysteresis, 0.45 µA typical supply current at 1.5 V input, open-drain N-channel active-low reset output, and operates from −40°C to +125°C over 0.8–10 V supply range.
For engineers reviewing the NCP301LSN16T1 datasheet, pinout, applications, or equivalent options, this device is selected for battery-powered MCU reset supervision where sub-µA quiescent current, precise 1.6 V threshold stability across temperature, and open-drain compatibility with external pull-up networks are critical design requirements.
Technical Context
The NCP301LSN16T1 implements a precision bandgap-based comparator with internal hysteresis to prevent oscillation near the 1.6 V detection threshold. Its open-drain N-channel output requires an external pull-up resistor and sinks up to 2.0 mA at VOUT = 0.5 V when Vin = 1.5 V.
It operates across a wide input voltage range (0.8 V to 10 V) while maintaining <0.5 µA typical quiescent current - enabling use in energy-constrained applications such as coin-cell–powered IoT sensors and wearables where long-term battery life is essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 1.6 V ±2.0% at 25°C; ±3% over −40°C to +125°C - ensures reliable reset assertion before MCU brownout |
| Hysteresis | 0.080 V typical - prevents chatter during slow-rising/falling supply transitions |
| Quiescent Current | 0.45 µA typical at Vin = 1.5 V - extends battery life in always-on monitoring circuits |
| Output Type | Open-drain N-channel - enables wired-OR reset bus and flexible pull-up voltage selection |
| Operating Voltage | 0.8 V to 10 V - supports single-cell Li-ion, multi-cell alkaline, and intermediate rail monitoring |
| Temperature Range | −40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| Reset Sink Current | 2.0 mA min at VOUT = 0.5 V, Vin = 1.5 V - drives standard logic-level reset inputs without buffering |
Pinout & Package
Package: TSOP-5 (SOT23-5), 5-pin surface-mount package with 0.65 mm pitch and exposed pad thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Reset Output | Open-drain N-channel drain | Sinks reset signal to GND when Vin falls below 1.6 V; requires external pull-up |
| 2 - Input | Voltage sense input | Monitors system supply rail; internally biased comparator input |
| 3 - Ground | Reference return path | Common reference for internal circuitry and output stage |
| 4 - N.C. | No connection | Internally unconnected; must be left floating or tied to GND per layout best practice |
| 5 - N.C. | No connection | Internally unconnected; must be left floating or tied to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 0.45 µA typical enables >10-year battery life in coin-cell–powered devices |
| Precision 1.6 V threshold | ±2.0% accuracy at 25°C ensures deterministic reset timing across production lots |
| Integrated hysteresis | 0.080 V typical eliminates false resets during noisy or slowly recovering power rails |
| Wide operating voltage range | 0.8–10 V supports direct monitoring of LiFePO₄, NiMH, and 3.3/5 V system rails |
| Automotive-grade qualification | AEC-Q100 qualified (NCV prefix variants); NCP301LSN16T1 shares same die and process |
Applications
| Microprocessor Reset Supervision | Low-Battery Detection |
|---|---|
Use Scenario: Monitoring 1.8 V core supply of an ARM Cortex-M0+ microcontroller in a wireless sensor node. IC Role / Device Role / Timing Role: Voltage detector asserting active-low reset signal when supply drops below 1.6 V, holding MCU in reset until stable recovery. Use Value: Prevents erratic execution during brownout; 0.45 µA quiescent current minimizes impact on 220 mAh CR2032 battery lifetime. | Use Scenario: Detecting end-of-life in a single-cell Li-ion backup for real-time clock (RTC) circuitry. IC Role / Device Role / Timing Role: Open-drain output pulls low to trigger host MCU interrupt when cell voltage falls to 1.6 V. Use Value: Enables graceful shutdown and data save; hysteresis avoids repeated wakeups near threshold. |
| Power-Fail Indicator | Battery Backup Switchover Control |
Use Scenario: Signaling AC power loss in a smart meter using a 3.3 V auxiliary rail derived from mains. IC Role / Device Role / Timing Role: Reset output drives LED driver or status GPIO when main rail collapses below 1.6 V. Use Value: Provides immediate visual/system alert; 125°C rating ensures reliability in sealed meter enclosures. | Use Scenario: Enabling seamless transition from main 3.3 V supply to coin-cell backup in a GPS tracker. IC Role / Device Role / Timing Role: Active-low output disables main supply LDO and enables backup LDO via external logic. Use Value: Open-drain architecture allows level-shifting and OR-ing with other fault signals for coordinated switchover. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB16DBVR | 0.9–6.0 V supply; 1.6 V threshold ±1.5%; 0.5 µA max IQ; SOT-23-5 package | Higher accuracy but no AEC-Q100 qualification; lacks extended 125°C operation | Select for cost-sensitive consumer designs requiring tighter threshold tolerance |
| MAX809SEUR+T | 2.5–5.5 V supply; 1.63 V threshold ±2.5%; 1.2 µA max IQ; SOT-23-3 package | Lower quiescent current not guaranteed below 2.5 V; only 3-pin package limits flexibility | Select when board space is constrained and supply stays above 2.5 V |
Compared with TLV803EB16DBVR and MAX809SEUR+T, the NCP301LSN16T1 delivers superior wide-input-voltage operation (0.8–10 V), guaranteed −40°C to +125°C performance, and automotive-grade process consistency - making it optimal for industrial and automotive reset supervision where environmental robustness is non-negotiable.
Availability
NCP301LSN16T1 is available at Aetrix Electronics and suitable for microprocessor reset supervision, low-battery detection, power-fail indication, and battery backup switchover control requiring stable component supply across automotive, industrial, and medical OEM programs.
Supply support for NCP301LSN16T1 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP301 series belongs to onsemi's ultra-low-power voltage detector product line, engineered specifically for battery-critical reset supervision in portable and automotive systems where nanoscale quiescent current and high-temperature reliability are mandatory.
FAQ
What is the exact detection threshold voltage of the NCP301LSN16T1?
The NCP301LSN16T1 has a nominal detection threshold of 1.60 V, with ±2.0% accuracy at +25°C and ±3% over the full −40°C to +125°C operating temperature range. This value is specified as VDET− in the Electrical Characteristics table and applies to the "L" suffix active-low variant. The threshold is factory-trimmed and does not require external calibration.
Does the NCP301LSN16T1 require an external pull-up resistor on its reset output?
Yes, the NCP301LSN16T1 features an open-drain N-channel output (Pin 1) and requires an external pull-up resistor to define the high-state voltage level. Typical values range from 10 kΩ to 100 kΩ, depending on rise time and bus loading requirements. No internal pull-up is present - omission will result in undefined reset state.
What is the maximum supply voltage the NCP301LSN16T1 can monitor?
The NCP301LSN16T1 supports an input voltage range of 0.8 V to 10 V on Pin 2 (Input). Its absolute maximum rating is 12 V, but continuous operation above 10 V is not characterized or guaranteed. For 12 V battery monitoring, a resistive divider is required to scale the input within the 0.8–10 V operating window.
How does hysteresis improve system reliability in the NCP301LSN16T1?
The NCP301LSN16T1 incorporates 0.080 V typical hysteresis between its upper (VDET+) and lower (VDET−) thresholds. This prevents rapid toggling of the reset output during slow or noisy supply recoveries - for example, when a buck converter ramps up gradually - ensuring clean, glitch-free reset assertion and release.
Is the NCP301LSN16T1 suitable for automotive applications?
While the NCP301LSN16T1 itself is not AEC-Q100 certified, it shares identical die, process, and characterization with the NCV301LSN16T1 (automotive-grade variant). Its −40°C to +125°C guaranteed operation, 10 V max input rating, and robust ESD protection (2000 V HBM) make it suitable for non-safety-critical automotive subsystems where full qualification is not mandated.
NCP301LSN16T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.6V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
NCP301LSN16T1 FAQ
1.How can I place an order for NCP301LSN16T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP301LSN16T1 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 NCP301LSN16T1 reliable?
The price and inventory of NCP301LSN16T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP301LSN16T1 is usually 5 days.
3.What payment methods are accepted for NCP301LSN16T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP301LSN16T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP301LSN16T1?
NCP301LSN16T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP301LSN16T1 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 NCP301LSN16T1?
For technical support, including NCP301LSN16T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP301LSN16T1 requirements.
6.How does Aetrix verify that NCP301LSN16T1 is sourced from the original manufacturer or authorized distributors?
All NCP301LSN16T1 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 NCP301LSN16T1 meets industry standards.
7.What is the process for return or replacement of NCP301LSN16T1?
All NCP301LSN16T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP301LSN16T1, 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 NCP301LSN16T1 part is unused and in its original packaging.
Return procedure for NCP301LSN16T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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