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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

onsemi NCP301HSN09T1

Name: NCP301HSN09T1
Brand: onsemi
SKU: NCP301HSN09T1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCP301HSN09T1

Manufacturer:: onsemi

Category:: Supervisors

Package:: SOT-23-5 Thin, TSOT-23-5

Datasheet:: NCP301HSN09T1.pdf

Description:: IC SUPERVISOR 1 CHANNEL 5TSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NCP301HSN09T1 from onsemi is an ultra-low-quiescent-current voltage detector IC designed as a reset controller for portable microprocessor systems. It features a 0.9 V ±2.0% undervoltage detection threshold, open-drain N-channel active-high reset output, 0.45 µA typical supply current at 2.9 V input, and operates from −40°C to +125°C over 0.8–10 V supply range - enabling reliable low-battery detection in battery-powered IoT sensors.

For engineers reviewing the NCP301HSN09T1 datasheet, pinout, applications, or equivalent options, key selection considerations include its precise 0.9 V threshold tolerance, open-drain output compatibility with external pull-up networks, ultra-low power consumption for multi-year battery life, and AEC-Q100-qualified variants for automotive-grade reliability validation.

Technical Context

The NCP301HSN09T1 implements a precision bandgap-based comparator with built-in hysteresis (45 mV typical) to prevent oscillation near threshold crossing. Its internal reference is trimmed to deliver ±2.0% accuracy over temperature for the 0.9 V nominal threshold.

This device uses an open-drain N-channel output stage configured for active-high reset signaling - requiring an external pull-up resistor to define the high-state voltage level and sink capability. It supports direct interface with microcontroller reset inputs or logic-level monitoring circuits without level-shifting.

Key Specifications

Parameter	Value and Actual Design Meaning
Detection Threshold	0.900 V ±2.0% (ensures consistent reset assertion across temperature and process variation)
Quiescent Current	0.45 µA typical at 2.9 V (enables >10-year battery life in always-on sensor nodes)
Operating Voltage Range	0.8 V to 10 V (supports single-cell Li-ion, NiMH, and multi-cell alkaline/battery-backed systems)
Output Type	Open-drain N-channel, active-high (requires external pull-up; enables wired-OR and voltage-level flexibility)
Hysteresis	0.045 V typical (prevents chatter during slow-rising/falling supply transitions)
Temperature Range	−40°C to +125°C (valid for industrial and under-hood automotive applications)
Reset Propagation Delay	49 µs max (tpHL), 300 µs max (tpLH) - ensures timely system response without excessive latency)

Pinout & Package

Package: TSOP-5 (SOT23-5), 5-pin thin shrink small-outline package with 0.65 mm pitch and exposed thermal pad (Case 483).

Pin/Terminal	Circuit Role	Design Meaning
1	Reset Output	Open-drain N-channel drain terminal; sinks current when reset asserted (low), floats when deasserted (high via external pull-up)
2	Input (V_IN)	Detection input; monitors supply rail voltage against internal 0.9 V threshold
3	No Connect	Internally unconnected; must be left floating or tied to GND per layout best practice
4	GND	Analog ground reference for internal comparator and bandgap circuitry
5	No Connect	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 operation on CR2032 coin cell in sleep-mode sensor nodes
High-accuracy threshold	±2.0% tolerance over temperature eliminates need for external calibration in cost-sensitive designs
Wide supply range	0.8–10 V operation supports legacy and emerging battery chemistries without external regulators
Open-drain output	Enables flexible voltage translation and multi-drop reset bus configurations with shared pull-up
AEC-Q100 qualified option	NCV301HSN09T1 variant available for automotive applications requiring PPAP and extended temperature validation

Applications

Microprocessor Reset Control	Low-Battery Detection
Use Scenario: Monitors main system supply rail in wearable health monitors to trigger controlled shutdown before brownout. IC Role / Device Role / Timing Role: Voltage detector asserting active-high reset signal to MCU upon falling below 0.9 V threshold. Use Value: Prevents data corruption and flash write errors during power collapse by initiating clean reset sequence.	Use Scenario: Integrated into Bluetooth LE beacon firmware to detect end-of-life in primary alkaline cells. IC Role / Device Role / Timing Role: Standalone threshold monitor feeding GPIO interrupt to BLE SoC when battery drops to 0.9 V. Use Value: Enables accurate remaining runtime estimation without MCU ADC overhead or calibration drift.
Power-Fail Indicator	Battery Backup Switchover
Use Scenario: Used in industrial PLC I/O modules to signal AC/DC converter failure before backup capacitor depletion. IC Role / Device Role / Timing Role: Detects 24 V DC rail sag to <0.9 V × (system scaling ratio) and asserts fault flag. Use Value: Provides deterministic early-warning window (≥49 µs) for safe state capture and logging prior to loss of control.	Use Scenario: Embedded in smart meter RTC subsystem to manage switchover from main supply to supercapacitor backup. IC Role / Device Role / Timing Role: Triggers backup enable signal when main V_CC falls below 0.9 V threshold. Use Value: Guarantees uninterrupted timekeeping with no clock glitch or register corruption during transition.

Microprocessor Reset Control

Low-Battery Detection

Use Scenario: Monitors main system supply rail in wearable health monitors to trigger controlled shutdown before brownout.

IC Role / Device Role / Timing Role: Voltage detector asserting active-high reset signal to MCU upon falling below 0.9 V threshold.

Use Value: Prevents data corruption and flash write errors during power collapse by initiating clean reset sequence.

Use Scenario: Integrated into Bluetooth LE beacon firmware to detect end-of-life in primary alkaline cells.

IC Role / Device Role / Timing Role: Standalone threshold monitor feeding GPIO interrupt to BLE SoC when battery drops to 0.9 V.

Use Value: Enables accurate remaining runtime estimation without MCU ADC overhead or calibration drift.

Power-Fail Indicator

Battery Backup Switchover

Use Scenario: Used in industrial PLC I/O modules to signal AC/DC converter failure before backup capacitor depletion.

IC Role / Device Role / Timing Role: Detects 24 V DC rail sag to <0.9 V × (system scaling ratio) and asserts fault flag.

Use Value: Provides deterministic early-warning window (≥49 µs) for safe state capture and logging prior to loss of control.

Use Scenario: Embedded in smart meter RTC subsystem to manage switchover from main supply to supercapacitor backup.

IC Role / Device Role / Timing Role: Triggers backup enable signal when main V_CC falls below 0.9 V threshold.

Use Value: Guarantees uninterrupted timekeeping with no clock glitch or register corruption during transition.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage detector applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV803EB29DPWR	0.9 V threshold, push-pull active-low output, 350 nA I_Q, SOT-23-5 package	Requires active-low reset logic; lacks open-drain flexibility for wired-OR or level translation	Preferred where ultra-low I_Q dominates and reset polarity matches existing design
MAX6375XR29+T	0.9 V threshold, open-drain active-low output, 1.2 µA I_Q, SOT-23-5	Active-low output requires inversion or logic adaptation; higher quiescent current reduces battery life	Selected when legacy MAXIM footprint compatibility is required and active-low interface is acceptable

Compared with TLV803EB29DPWR and MAX6375XR29+T, the NCP301HSN09T1 uniquely combines ultra-low I_Q, open-drain active-high output, and AEC-Q100-qualified variants - making it optimal for new designs requiring flexible reset signaling and long-term battery operation in harsh environments.

Availability

NCP301HSN09T1 is available at Aetrix Electronics and suitable for battery-powered IoT sensors, automotive body electronics, industrial PLC modules, and medical wearables requiring stable component supply and long-lifecycle support.

Supply support for NCP301HSN09T1 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 (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.

The NCP301 series belongs to onsemi's precision voltage detector product line, engineered specifically for ultra-low-power reset supervision in portable and battery-critical systems where extended operational lifetime and robust threshold accuracy are mandatory.

FAQ

What is the exact detection threshold voltage of the NCP301HSN09T1?

The NCP301HSN09T1 has a nominal detection threshold of 0.900 V with ±2.0% accuracy over temperature (−40°C to +125°C for thresholds ≥1.2 V). At +25°C, the guaranteed range is 0.882 V to 0.918 V. This value is factory-trimmed and specified in Table 4 of the official datasheet.

Does the NCP301HSN09T1 require an external pull-up resistor?

Yes, the NCP301HSN09T1 features an open-drain N-channel output 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 requirements and bus capacitance. No internal pull-up is present.

What is the maximum supply voltage the NCP301HSN09T1 can tolerate on its input pin?

The NCP301HSN09T1 supports an absolute maximum input voltage of 12 V on Pin 2 (Input), with a recommended operating range of 0.8 V to 10 V. Exceeding 12 V risks permanent damage per the Absolute Maximum Ratings table on page 2 of the datasheet.

How does the hysteresis function in the NCP301HSN09T1?

The NCP301HSN09T1 incorporates 45 mV typical hysteresis (V_HYS) between its lower threshold (V_DET−) and upper threshold (V_DET+ = V_DET− + V_HYS). This prevents output oscillation during slow or noisy supply transitions near the 0.9 V trip point, ensuring clean, chatter-free reset assertion and release.

Is there an automotive-grade version of the NCP301HSN09T1?

Yes - the NCV301HSN09T1 is the automotive-qualified variant of the NCP301HSN09T1. It meets AEC-Q100 Grade 1 requirements (−40°C to +125°C), undergoes PPAP documentation, and is manufactured at onsemi's certified automotive sites. Electrical specifications are identical except for qualification scope.

NCP301HSN09T1 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:: 0.9V

Output:: Open Drain or Open Collector

Reset:: Active High

Reset Timeout:: -

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 5-TSOP

NCP301HSN09T1 FAQ

1.How can I place an order for NCP301HSN09T1 through Aetrix?

Please submit a Request for Quotation (RFQ) for NCP301HSN09T1 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 NCP301HSN09T1 reliable?

The price and inventory of NCP301HSN09T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP301HSN09T1 is usually 5 days.

3.What payment methods are accepted for NCP301HSN09T1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP301HSN09T1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCP301HSN09T1?

NCP301HSN09T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCP301HSN09T1 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 NCP301HSN09T1?

For technical support, including NCP301HSN09T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP301HSN09T1 requirements.

6.How does Aetrix verify that NCP301HSN09T1 is sourced from the original manufacturer or authorized distributors?

All NCP301HSN09T1 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 NCP301HSN09T1 meets industry standards.

7.What is the process for return or replacement of NCP301HSN09T1?

All NCP301HSN09T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP301HSN09T1, 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 NCP301HSN09T1 part is unused and in its original packaging.

Return procedure for NCP301HSN09T1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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