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HomeProductsIntegrated Circuits (ICs)PMIC - SupervisorsNCP300HSN09T1
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NCP300HSN09T1 - onsemi

Manufacturer Part Number
NCP300HSN09T1
Manufacturer
onsemi
Allelco Part Number
98D-NCP300HSN09T1
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
16,728 pcs available, New & Original
Parts Description
IC SUPERVISOR 1 CHANNEL 5TSOP
Package
5-TSOP
Data sheet
NCP300HSN09T1.pdf

PCN Obsolescence/ EOL

Cylindrical Battery Holders.pdf

HTML Datasheet

NCP300,301.pdf

Environmental Information

onsemi RoHS.pdf
RoHs Status
 
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Specifications

NCP300HSN09T1 Tech Specifications
onsemi - NCP300HSN09T1 technical specifications, attributes, parameters and parts with similar specifications to onsemi - NCP300HSN09T1

Product Attribute Attribute Value
Manufacturer onsemi
Voltage - Threshold 0.9V
Type Simple Reset/Power-On Reset
Supplier Device Package 5-TSOP
Series -
Reset Timeout -
Reset Active High
Product Attribute Attribute Value
Package / Case SOT-23-5 Thin, TSOT-23-5
Package Tape & Reel (TR)
Output Push-Pull, Totem Pole
Operating Temperature -40°C ~ 85°C (TA)
Number of Voltages Monitored 1
Mounting Type Surface Mount
Base Product Number NCP300

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Frequently Asked Questions(FAQ)

What is the typical application scenario for the NCP300HSN09T1 supervisor IC in embedded systems, and how does its 0.9V threshold voltage influence system reliability during power-up sequences?
The NCP300HSN09T1 is commonly used as a precision power-on reset (POR) device in low-voltage microcontroller-based designs, particularly where supply rails drop below 0.9V during brownout conditions. Its single-channel monitoring capability ensures that critical subsystems remain held in reset until the main supply stabilizes above this well-defined threshold, preventing erratic behavior from undervoltage states. This behavior is especially relevant in battery-powered or energy-harvesting applications where voltage sag can occur during load transients.
How does the NCP300HSN09T1 compare to the NCP300HSN07T1 in terms of threshold accuracy and reset timing, and which would be more suitable for a design requiring tighter regulation at 0.7V with ±2% tolerance?
While both devices belong to the same NCP300 family, the NCP300HSN09T1 operates at a fixed 0.9V threshold, whereas the NCP300HSN07T1 provides a lower 0.7V reference. Threshold accuracy across temperature and process variation must be evaluated against system requirements; however, neither part specifies a tolerance better than ±5% without external compensation. For applications demanding tighter control at 0.7V with ±2%, additional feedback circuitry or a dedicated voltage monitor with trimmed reference may be necessary, making the choice dependent on architectural trade-offs rather than inherent precision alone.
In what way does the push-pull output stage of the NCP300HSN09T1 simplify PCB layout compared to open-drain configurations, and what are the implications for driving high-capacitance loads such as long cables or multiple logic inputs?
The NCP300HSN09T1 features a push-pull (totem-pole) output that actively drives both high and low levels without requiring an external pull-up resistor, reducing component count and simplifying routing. However, this configuration can lead to increased power dissipation when sourcing steady-state current into capacitive loads. For long traces or parallel gate inputs drawing cumulative charge, transient current spikes during switching may stress the output stage unless proper decoupling and load management are implemented.
Can the NCP300HSN09T1 reliably function over the full industrial temperature range (-40°C to 85°C), and how might threshold drift under thermal extremes affect system recovery after power cycling?
Yes, the device is rated for operation from -40°C to 85°C, but semiconductor references typically exhibit slight threshold shifts with temperature due to bandgap variations. Although the datasheet does not specify exact drift coefficients, empirical data suggests that the 0.9V threshold could deviate by several tens of millivolts across the range. This minor variation generally does not compromise functional safety in most digital systems, provided margin is maintained in the main supply design to ensure clean reset assertion regardless of temperature-induced shift.
What considerations should engineers evaluate when cascading multiple NCP300HSN09T1 devices to monitor different rails in a multi-supply system, and what risks arise from mismatched reset delays?
Cascading NCP300HSN09T1 supervisors across multiple rails requires careful coordination of threshold levels and propagation delays. Since the part lacks programmable timeout features and has unspecified reset latency, simultaneous assertion on multiple outputs—especially if one rail recovers faster than another—can cause race conditions during startup or fault recovery. Engineers should simulate worst-case timing scenarios and consider adding RC delay networks or using a centralized reset manager to ensure orderly sequencing, minimizing the risk of partial initialization or watchdog timeouts.
How does the RoHS non-compliance status of the NCP300HSN09T1 impact procurement strategy for consumer vs. industrial products, and what alternatives exist if regulatory compliance becomes mandatory?
The NCP300HSN09T1’s RoHS non-compliance indicates it contains restricted substances like lead in packaging materials, which disqualifies its use in EU-regulated consumer electronics under WEEE directives. For industrial or military applications where exemptions apply, continued availability may still be feasible. However, transitioning to compliant variants—such as the NCP301 series or similar devices from TI or Microchip—is advisable for new designs targeting global markets, even if backward compatibility is desired through inventory management strategies.
Given that the NCP300HSN09T1 uses a 5-TSOP package, what are the key mechanical and thermal constraints when replacing it with surface-mount footprints on a densely populated board?
The 5-TSOP (TSOT-23-5) package offers compact form factor ideal for space-constrained layouts, but its small size limits power handling and heat dissipation compared to larger packages like SOIC or DFN. With no exposed pad and minimal copper attachment, thermal performance relies heavily on adequate PCB copper pour and layer stacking. Engineers should verify that junction temperatures stay within absolute maximum ratings during continuous operation, especially in environments near the upper end of the -40°C to 85°C operating range.
Why might the absence of a defined reset timeout specification for the NCP300HSN09T1 necessitate external components in safety-critical applications, and how can this limitation be mitigated during system validation?
Unlike some supervisory ICs that provide programmable watchdog or manual reset durations, the NCP300HSN09T1 lacks explicit timeout parameters, implying either instantaneous assertion upon threshold crossing or undefined delay behavior. In mission-critical systems requiring controlled reset duration—such as those involving flash memory initialization or motor control loops—this ambiguity poses integration challenges. To mitigate, designers often add an RC network at the output to create soft reset pulses or pair the device with a timer peripheral capable of detecting edge transitions and enforcing minimum hold time, ensuring deterministic behavior across all operational modes.

Parts with Similar Specifications

The three parts on the right have similar specifications to onsemi NCP300HSN09T1

Product Attribute NCP300HSN09T1G NCP300HSN30T1G NCP300HSN20T1 NCP300HSN30T1
Part Number NCP300HSN09T1G NCP300HSN30T1G NCP300HSN20T1 NCP300HSN30T1
Manufacturer onsemi onsemi onsemi onsemi
Voltage - Threshold - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Series - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Reset - - - -
Output - - - -
Number of Voltages Monitored - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Reset Timeout - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Type - - - -

NCP300HSN09T1 Datasheet PDF

Download NCP300HSN09T1 pdf datasheets and onsemi documentation for NCP300HSN09T1 - onsemi.

Datasheets
Cylindrical Battery Holders.pdf
PCN Obsolescence/ EOL
Cylindrical Battery Holders.pdf
HTML Datasheet
NCP300,301.pdf
Environmental Information
onsemi RoHS.pdf

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    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

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    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

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    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

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    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

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    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

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2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
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NCP300HSN09T1 Image

NCP300HSN09T1

onsemi
98D-NCP300HSN09T1

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