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onsemi NCP300LSN18T1
- Part No.:
- NCP300LSN18T1
- Manufacturer:
- onsemi
- Category:
- Supervisors
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP300LSN18T1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,909
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Product details
Overview
NCP300LSN18T1 from onsemi is an ultra-low-quiescent-current voltage detector IC designed as a microprocessor reset controller with complementary output configuration, 1.8 V ±2.0% detection threshold, 0.090 V hysteresis, and operation from 0.8 V to 10 V supply - used in battery-powered portable systems requiring extended runtime and reliable power-on reset.
For engineers reviewing the NCP300LSN18T1 datasheet, pinout, applications, or equivalent options, key selection criteria include undervoltage detection accuracy over −40°C to +125°C, complementary active-low reset output drive capability, sub-1 μA quiescent current at low input voltages, and TSOP-5 package compatibility with space-constrained PCB layouts.
Technical Context
The NCP300LSN18T1 implements a precision bandgap-based comparator with internal hysteresis to prevent oscillation near the 1.8 V detection threshold. Its complementary output stage integrates both P-channel source and N-channel sink transistors, enabling direct drive of logic inputs without external pull-up resistors.
It operates across a wide input voltage range (0.8–10 V) while maintaining <0.5 μA typical supply current at Vin = 1.7 V and full specification over industrial and automotive temperature ranges (−40°C to +125°C for 1.8 V threshold variants), making it suitable for low-power embedded reset supervision where supply rail stability is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 1.80 V ±2.0% at 25°C; ensures precise system reset initiation when main supply drops below nominal 1.8 V rail |
| Hysteresis | 0.090 V typical; prevents chatter during slow-rising/falling supply transitions by enforcing 1.89 V release point |
| Quiescent Current | 0.23 μA typical at Vin = 1.7 V; extends battery life in always-on monitoring applications |
| Operating Voltage Range | 0.8 V to 10 V; supports supervision of sub-1 V logic rails and higher-voltage auxiliary supplies |
| Output Type | Complementary (active-low reset); provides push-pull drive without external components for direct MCU reset pin interface |
| Temperature Range | −40°C to +125°C; qualified for under-hood automotive and industrial environments |
| Propagation Delay | 73 ns (tpHL), 94 ns (tpLH); enables fast response to supply faults without compromising noise immunity |
Pinout & Package
Package: TSOP-5 (SOT-23-5), 1.6 mm × 2.9 mm × 1.1 mm body, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Reset Output | Complementary active-low output; sinks up to 2.0 mA or sources up to 6.0 mA at specified conditions |
| 2 | Input (VIN) | Detection input; monitors supply rail voltage against internal 1.8 V reference |
| 3 | No Connect | Internally unconnected; must be left floating or tied to GND per layout guidelines |
| 4 | GND | Analog and digital ground reference; requires low-impedance connection to system ground plane |
| 5 | No Connect | Internally unconnected; must be left floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 0.23 μA typical at 1.7 V input enables >10-year battery life in coin-cell-supplied IoT sensors |
| High-accuracy threshold | ±2.0% tolerance at 25°C and ±3% over full temperature range ensures consistent reset behavior across operating conditions |
| Complementary output stage | Integrated Pch/Nch drivers eliminate need for external pull-up resistor, reducing BOM count and board area |
| Wide supply range | Operates down to 0.8 V input allows use with partially discharged batteries or low-VDD logic domains |
| Automotive qualification | NCV prefix variant available; AEC-Q100 Grade 1 qualified for under-hood and infotainment applications |
Applications
| Microprocessor Reset Supervision | Low-Battery Detection |
|---|---|
Use Scenario: Monitors 1.8 V core supply of ARM Cortex-M0+ microcontroller in wearable health monitor. IC Role / Device Role / Timing Role: Generates clean, glitch-free active-low reset pulse upon supply drop below 1.8 V, holding MCU in reset until stable. Use Value: Prevents erratic firmware execution during brown-out; eliminates need for discrete RC reset circuitry. | Use Scenario: Detects end-of-life voltage in CR2032-powered remote sensor node before data corruption occurs. IC Role / Device Role / Timing Role: Triggers early warning interrupt via GPIO when battery falls below 1.8 V threshold. Use Value: Enables graceful shutdown and non-volatile memory save using only 0.23 μA standby current. |
| Power-Fail Indicator | Battery Backup Switchover Control |
Use Scenario: Signals AC/DC adapter failure in smart home gateway by monitoring 3.3 V auxiliary rail. IC Role / Device Role / Timing Role: Drives LED driver or status GPIO with complementary output to indicate loss of primary power. Use Value: Provides immediate visual alert with <100 ns propagation delay and no software dependency. | Use Scenario: Controls switchover from main 3.3 V supply to backup supercapacitor in industrial PLC I/O module. IC Role / Device Role / Timing Role: Activates analog switch or MOSFET gate driver when main rail drops below 1.8 V. Use Value: Ensures uninterrupted operation during brief line interruptions with zero reset assertion latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB18DBVR | Fixed 1.8 V threshold, open-drain output, 350 nA max IQ, SOT-23-3 package | Lacks complementary drive; requires external pull-up; smaller footprint but lower sink current (3 mA) | Preferred when board space is constrained and external pull-up is acceptable |
| MAX809SEUR+T | 1.8 V threshold, open-drain output, 12 μA IQ, SOT-23-3 package | Higher quiescent current limits battery lifetime; no hysteresis adjustment; narrower temp range (−40°C to +85°C) | Suitable for cost-sensitive industrial designs where ultra-low IQ is not required |
Compared with TLV803EB18DBVR and MAX809SEUR+T, the NCP300LSN18T1 delivers superior energy efficiency (0.23 μA vs. ≥350 nA/12 μA), integrated complementary drive eliminating BOM parts, and extended temperature support up to +125°C - making it optimal for long-life portable and automotive reset applications.
Availability
NCP300LSN18T1 is available at Aetrix Electronics and suitable for microprocessor reset supervision, low-battery detection, and power-fail indicator applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for NCP300LSN18T1 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 NCP300 series belongs to onsemi's precision voltage detector product line, engineered specifically for ultra-low-power reset control in battery-operated and thermally demanding systems where reliability and minimal standby current are critical.
FAQ
What is the detection threshold accuracy of the NCP300LSN18T1 over temperature?
The NCP300LSN18T1 has a detection threshold of 1.80 V ±2.0% at 25°C. Over the full operating temperature range of −40°C to +125°C, the threshold is guaranteed within ±3% of nominal (1.746 V to 1.854 V), as specified in Table 1 of the datasheet. This accuracy ensures robust reset behavior across automotive and industrial thermal environments without calibration.
Does the NCP300LSN18T1 require an external pull-up resistor on its reset output?
No, the NCP300LSN18T1 does not require an external pull-up resistor because it features a complementary output stage with integrated P-channel source and N-channel sink transistors. This push-pull architecture enables direct interface to standard CMOS reset inputs without additional passive components, reducing bill-of-materials and PCB area versus open-drain alternatives like the NCP301 series.
What is the minimum input voltage at which the NCP300LSN18T1 remains functional?
The NCP300LSN18T1 maintains specified operation down to 0.8 V input voltage (Vin(min) = 0.80 V at −40°C to +125°C). At this level, the device continues to monitor the supply and assert reset if the input falls below the 1.8 V threshold - enabling reliable brown-out detection even with deeply discharged batteries or low-VDD logic domains.
How does the hysteresis of the NCP300LSN18T1 prevent false resets?
The NCP300LSN18T1 incorporates 0.090 V typical hysteresis between its lower detection threshold (VDET− = 1.764 V) and upper release threshold (VDET+ = 1.854 V). This built-in hysteresis ensures the reset output remains asserted until the supply recovers fully above 1.854 V, eliminating oscillatory reset toggling during slow or noisy supply ramp-up/down events - a critical feature for stable system boot sequences.
Is the NCP300LSN18T1 suitable for automotive applications?
Yes - the NCP300LSN18T1 is rated for operation from −40°C to +125°C and is part of onsemi's NCV-qualified product family. While the standard NCP300LSN18T1 is not AEC-Q100 certified, its NCV300LSN18T1 automotive-grade counterpart is PPAP-capable and meets AEC-Q100 stress testing requirements, making it suitable for engine control, body electronics, and infotainment systems where extended temperature performance is mandatory.
NCP300LSN18T1 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:
- 1.8V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
NCP300LSN18T1 FAQ
1.How can I place an order for NCP300LSN18T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP300LSN18T1 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 NCP300LSN18T1 reliable?
The price and inventory of NCP300LSN18T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP300LSN18T1 is usually 5 days.
3.What payment methods are accepted for NCP300LSN18T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP300LSN18T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP300LSN18T1?
NCP300LSN18T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP300LSN18T1 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 NCP300LSN18T1?
For technical support, including NCP300LSN18T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP300LSN18T1 requirements.
6.How does Aetrix verify that NCP300LSN18T1 is sourced from the original manufacturer or authorized distributors?
All NCP300LSN18T1 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 NCP300LSN18T1 meets industry standards.
7.What is the process for return or replacement of NCP300LSN18T1?
All NCP300LSN18T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP300LSN18T1, 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 NCP300LSN18T1 part is unused and in its original packaging.
Return procedure for NCP300LSN18T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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