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onsemi NCP300HSN27T1
- Part No.:
- NCP300HSN27T1
- Manufacturer:
- onsemi
- Category:
- Supervisors
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP300HSN27T1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,939
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Product details
Overview
NCP300HSN27T1 from onsemi is a complementary-output voltage detector IC designed for microprocessor reset control in battery-powered systems. It features a 2.7 V ±3% undervoltage detection threshold, 0.135 V typical hysteresis, 0.5 µA typical quiescent current at 2.6 V input, and operates from −40°C to +125°C. Its complementary output drives both high- and low-side logic directly in portable embedded power management.
For engineers reviewing the NCP300HSN27T1 datasheet, pinout, applications, or equivalent options, key selection criteria include reset threshold accuracy over temperature, ultra-low supply current for battery longevity, complementary output drive capability without external pull-ups, and automotive-grade AEC-Q100 qualification (NCV variant available).
Technical Context
The NCP300HSN27T1 implements a precision bandgap-based comparator with built-in hysteresis to prevent oscillation near the 2.7 V threshold. Its complementary output stage integrates both P-channel source and N-channel sink transistors, enabling direct interface with CMOS inputs without external components.
It operates across a 0.8 V to 10 V input range and maintains stable detection performance over −40°C to +125°C ambient, with threshold drift bounded by ±3% for this 2.7 V variant - validated per JEDEC JESD22-A108 thermal cycling standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 2.7 V ±3% over −40°C to +125°C - ensures reliable reset assertion before MCU brownout |
| Hysteresis | 0.135 V typical - prevents chatter during slow-rising/falling supply transitions |
| Quiescent Current | 0.5 µA typical at Vin = 2.6 V - extends battery life in always-on monitoring |
| Supply Range | 0.8 V to 10 V - supports single-cell Li-ion, multi-cell alkaline, and intermediate rail monitoring |
| Output Type | Complementary - drives high/low logic states directly; no external pull-up required |
| Temperature Range | −40°C to +125°C - qualified for under-hood automotive and industrial edge nodes |
| Propagation Delay | 55 ns (tpHL), 115 ns (tpLH) - enables fast system response to supply faults |
Pinout & Package
Package: TSOP-5 (SOT23-5), 5-pin thin shrink small-outline package with 0.65 mm pitch and exposed pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Reset Output | Complementary output: actively driven high (Pch) and low (Nch); sinks up to 3.5 mA, sources up to 9.7 mA |
| 2 | Input (Vin) | Detection input - connected to monitored supply rail; internally biased comparator input |
| 3 | No Connect | Internally unconnected; must be left floating or tied to GND per layout guidelines |
| 4 | GND | Analog 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 | 0.5 µA typical enables >10-year battery life in coin-cell–powered IoT sensors |
| High-threshold accuracy | ±3% over full temperature range eliminates need for external calibration |
| Complementary output architecture | Eliminates external pull-up resistors and reduces BOM count in reset circuitry |
| Wide operating voltage range | 0.8 V start-up supports deep discharge detection in single-cell LiFePO₄ systems |
| AEC-Q100 qualified option | NCV300HSN27T1 variant available for automotive applications requiring PPAP compliance |
Applications
| Microprocessor Reset Control | Low-Battery Detection |
|---|---|
Use Scenario: Monitors main VDD rail of an ARM Cortex-M4 microcontroller in a handheld medical device. IC Role / Device Role / Timing Role: Voltage detector asserting active-high reset signal when VDD drops below 2.7 V during battery depletion. Use Value: Prevents MCU lockup or corrupted flash writes by guaranteeing clean reset before supply collapse. | Use Scenario: Integrated into a Bluetooth LE asset tracker powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Detects end-of-life battery voltage (≤2.7 V) and triggers firmware alert before shutdown. Use Value: Enables predictive battery replacement with <1 µA standby current overhead. |
| Power-Fail Indicator | Battery Backup Switchover |
Use Scenario: Used in industrial PLC I/O module to detect AC/DC converter failure. IC Role / Device Role / Timing Role: Generates immediate logic-level flag upon mains dropout, feeding FPGA interrupt input. Use Value: 55 ns tpHL ensures sub-100 ns fault response - critical for deterministic safety shutdown. | Use Scenario: Supervises switchover between primary 3.3 V rail and backup supercapacitor in smart meter RTC. IC Role / Device Role / Timing Role: Asserts reset on primary rail collapse and releases hold after backup stabilizes. Use Value: Complementary output drives both enable and reset lines of backup LDO without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB27DBZR | Open-drain output only; 2.7 V threshold; 350 nA max IQ; SOT-23-3 package | Lacks complementary drive - requires external pull-up; lower current consumption but reduced interface flexibility | Preferred where board space is constrained and only active-low signaling is needed |
| MAX809SEUR+T | Fixed 2.7 V reset; push-pull output; 12 µA typical IQ; SOT-23-3 | Higher quiescent current limits battery lifetime; no hysteresis spec beyond 200 mV min | Suitable for cost-sensitive consumer applications where ultra-low IQ is not critical |
Compared with TLV803EB27DBZR and MAX809SEUR+T, the NCP300HSN27T1 delivers superior system integration via its complementary output, lowest effective IQ in active monitoring state, and tighter hysteresis control - making it optimal for long-life, space-constrained, and automotive-grade designs.
Availability
NCP300HSN27T1 is available at Aetrix Electronics and suitable for microprocessor reset control, low-battery detection, and power-fail indicator applications requiring stable component supply across automotive, industrial, and medical product lifecycles.
Supply support for NCP300HSN27T1 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 NCP300 series belongs to onsemi's precision analog supervisor portfolio, engineered specifically for ultra-low-power reset and voltage monitoring in battery-critical embedded systems.
FAQ
What is the guaranteed operating temperature range for NCP300HSN27T1?
The NCP300HSN27T1 is specified over −40°C to +125°C ambient temperature. Its 2.7 V detection threshold maintains ±3% accuracy across this full range, validated per JEDEC JESD22-A108. This makes NCP300HSN27T1 suitable for under-hood automotive modules and industrial edge controllers where thermal robustness is mandatory.
Does NCP300HSN27T1 require external pull-up or pull-down resistors?
No. The NCP300HSN27T1 features a true complementary output stage with integrated P-channel and N-channel drivers. Unlike open-drain or push-pull-only supervisors, NCP300HSN27T1 actively drives both logic high and logic low states on Pin 1, eliminating the need for external pull-up resistors and reducing PCB footprint and BOM cost.
How does the hysteresis of NCP300HSN27T1 prevent false resets?
NCP300HSN27T1 provides 0.135 V typical hysteresis between its upper (VDET+) and lower (VDET−) thresholds. When Vin falls below 2.7 V, reset asserts; Vin must then rise above ~2.835 V to release reset. This gap suppresses noise-induced toggling during slow or noisy supply recovery - a critical feature for reliable operation in electrically harsh environments.
Can NCP300HSN27T1 monitor supplies below 1.0 V?
Yes. NCP300HSN27T1 operates down to 0.8 V input voltage and can reliably detect undervoltage conditions even when the monitored rail collapses toward 0.55 V minimum (per datasheet Vin(min)). Its internal bandgap reference remains functional at sub-1 V, enabling early-warning detection in deeply discharged battery scenarios where other supervisors fail to activate.
Is there an automotive-qualified version of NCP300HSN27T1?
Yes. The NCV300HSN27T1 is the automotive-grade variant of NCP300HSN27T1, fully AEC-Q100 qualified (Grade 1: −40°C to +125°C), PPAP-capable, and manufactured at onsemi's certified automotive sites. It shares identical electrical specifications and pinout with NCP300HSN27T1, differing only in traceability, screening, and documentation requirements.
NCP300HSN27T1 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:
- 2.7V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
NCP300HSN27T1 FAQ
1.How can I place an order for NCP300HSN27T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP300HSN27T1 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 NCP300HSN27T1 reliable?
The price and inventory of NCP300HSN27T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP300HSN27T1 is usually 5 days.
3.What payment methods are accepted for NCP300HSN27T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP300HSN27T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP300HSN27T1?
NCP300HSN27T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP300HSN27T1 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 NCP300HSN27T1?
For technical support, including NCP300HSN27T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP300HSN27T1 requirements.
6.How does Aetrix verify that NCP300HSN27T1 is sourced from the original manufacturer or authorized distributors?
All NCP300HSN27T1 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 NCP300HSN27T1 meets industry standards.
7.What is the process for return or replacement of NCP300HSN27T1?
All NCP300HSN27T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP300HSN27T1, 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 NCP300HSN27T1 part is unused and in its original packaging.
Return procedure for NCP300HSN27T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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