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HomeProductsIntegrated Circuits (ICs)PMIC - SupervisorsNCP304LSQ38T1
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NCP304LSQ38T1 - onsemi

Manufacturer Part Number
NCP304LSQ38T1
Manufacturer
onsemi
Allelco Part Number
32D-NCP304LSQ38T1
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
17,090 pcs available, New & Original
Parts Description
IC SUPERVISOR 1 CHANNEL SC82AB
Package
SC-82AB
Data sheet
NCP304LSQ38T1.pdf

Datasheets

NCP304, 305.pdf

HTML Datasheet

NCP304, 305.pdf

Environmental Information

onsemi REACH.pdf onsemi RoHS.pdf
RoHs Status
 
Our certification
In stock: 17090

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Quantity

Specifications

NCP304LSQ38T1 Tech Specifications
onsemi - NCP304LSQ38T1 technical specifications, attributes, parameters and parts with similar specifications to onsemi - NCP304LSQ38T1

Product Attribute Attribute Value
Manufacturer onsemi
Voltage - Threshold 3.8V
Type Simple Reset/Power-On Reset
Supplier Device Package SC-82AB
Series -
Reset Timeout -
Reset Active Low
Product Attribute Attribute Value
Package / Case SC-82A, SOT-343
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 NCP304

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

Parts Introduction

NCP304LSQ38T1 Image
NCP304LSQ38T1 (1)

Manufacturer Part Number

NCP304LSQ38T1

Manufacturer

onsemi

Introduction

The NCP304LSQ38T1 is a simple reset/power-on reset (POR) supervisor that monitors a single voltage. It provides an active-low reset output when the monitored voltage drops below the 3.8V threshold. This device is suitable for a wide range of applications, including industrial, consumer, and automotive electronics.

Product Features and Performance

Monitors a single voltage

8V threshold voltage

Active-low reset output

Push-pull, totem-pole output

-40°C to 85°C operating temperature range

Surface mount package (SC-82A, SOT-343)

Product Advantages

Reliable voltage monitoring for system reset

Compact surface mount package

Wide operating temperature range

Key Reasons to Choose This Product

Ensures safe and reliable system operation by monitoring critical voltages

Compact size and surface mount package for efficient board design

Suitable for a variety of applications, including industrial, consumer, and automotive electronics

Quality and Safety Features

Tested and qualified for industrial and automotive applications

RoHS-compliant and lead-free

Compatibility

The NCP304LSQ38T1 is compatible with a wide range of electronic systems that require voltage monitoring and system reset functionality.

Application Areas

Industrial automation and control systems

Consumer electronics

Automotive electronics

General-purpose voltage monitoring applications

Product Lifecycle

The NCP304LSQ38T1 is an obsolete product. Customers are advised to contact our website's sales team for information on equivalent or alternative models that may be available.

Frequently Asked Questions(FAQ)

What are the key electrical characteristics of the NCP304LSQ38T1 supervisor IC that influence its use in power supply monitoring applications?
The NCP304LSQ38T1 features a precise 3.8V threshold voltage for monitoring, making it suitable for systems requiring tight regulation at this specific rail. Its push-pull, totem pole output configuration allows direct interfacing with microcontrollers or logic gates without external pull-up resistors, simplifying board layout. With active-low reset signaling and operation across -40°C to 85°C, it provides reliable supervision in industrial environments where temperature fluctuations may affect power stability.
How does the package size of the NCP304LSQ38T1 impact high-density PCB designs compared to larger supervisory ICs?
The SC-82AB (SOT-343) package occupies minimal board space—approximately half the footprint of standard SOT-23 variants—enabling efficient routing in compact consumer electronics or space-constrained embedded systems. This small form factor supports higher component density but requires careful thermal management during soldering due to limited pad exposure.
Can the NCP304LSQ38T1 be used interchangeably with similar-voltage supervisors from other manufacturers without redesign considerations?
While functionally comparable to other single-channel supervisors with 3.8V thresholds, substitution must account for differences in propagation delay, hysteresis levels, and output drive strength. The NCP304LSQ38T1 lacks built-in hysteresis, which may necessitate external filtering in noisy environments—unlike some competitive parts offering internal noise immunity—making direct swaps potentially risky without validation testing.
What design precautions should engineers take when integrating the NCP304LSQ38T1 near sensitive analog circuits due to its digital output behavior?
Engineers should isolate the NCP304LSQ38T1’s output traces from analog signal paths to prevent ground bounce or crosstalk, especially since its push-pull output can source/sink significant current during state transitions. Adding series termination resistors (e.g., 10–47Ω) near the output minimizes ringing on long interconnects, preserving timing integrity in synchronous systems.
How does the absence of a specified reset timeout affect system recovery after an undervoltage event with the NCP304LSQ38T1?
Since the NCP304LSQ38T1 has no defined reset timeout, the reset assertion duration depends entirely on software initialization routines or downstream logic. In worst-case scenarios, prolonged resets exceeding tens of milliseconds may disrupt real-time tasks unless mitigated by watchdog timers or hardware-based delay circuits.
Why might the RoHS non-compliant status of the NCP304LSQ38T1 restrict its adoption in certain global markets despite functional advantages?
The RoHS exemption likely stems from lead-containing materials used in legacy manufacturing processes; this excludes the part from compliance with EU Directive 2011/65/EU, limiting its use in consumer-facing products requiring full environmental certification. Designers targeting regulated regions must seek alternative components or obtain special exemptions.
What are the implications of the NCP304LSQ38T1’s moisture sensitivity level (MSL) rating being 1 during assembly?
An MSL of 1 indicates unlimited shelf life under proper storage conditions, eliminating the need for dry-packaging or bake cycles before reflow soldering. This simplifies logistics and reduces handling costs in mass production environments, though standard IPC guidelines still apply to avoid contamination.
How does the single-voltage-monitoring capability of the NCP304LSQ38T1 compare to multi-supervisory solutions when managing complex power rails?
Unlike dual/multi-channel supervisors that monitor multiple rails independently, the NCP304LSQ38T1 focuses exclusively on one threshold (3.8V), reducing component count for simple systems but increasing complexity if multiple voltages require tracking. For applications like battery-backed SRAM protection, this single-point focus is sufficient; however, mixed-signal SoCs often benefit from broader coverage.
What factors determine whether the NCP304LSQ38T1’s operating temperature range (-40°C to 85°C) meets application requirements?
Engineers must evaluate ambient operating temperatures, thermal gradients from nearby heat sources, and self-heating effects under continuous load. While adequate for most commercial and industrial controls, automotive or aerospace designs demanding extended ranges beyond 85°C would require derating or alternative components.
In what scenarios would the lack of programmable features in the NCP304LSQ38T1 necessitate additional circuitry compared to configurable supervisors?
Because the threshold is fixed at 3.8V and no user-adjustable parameters exist, designers cannot fine-tune response points for custom battery chemistries or non-standard supply rails. When dynamic threshold adaptation is needed—such as adapting to LiFePO4 vs. Li-ion battery profiles—external comparators or digitally controlled regulators become necessary.

Parts with Similar Specifications

The three parts on the right have similar specifications to onsemi NCP304LSQ38T1

Product Attribute NCP304LSQ38T1G NCP304LSQ35T1 NCP304LSQ36T1 NCP304LSQ37T1
Part Number NCP304LSQ38T1G NCP304LSQ35T1 NCP304LSQ36T1 NCP304LSQ37T1
Manufacturer onsemi onsemi onsemi onsemi
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Output - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Voltage - Threshold - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Number of Voltages Monitored - - - -
Reset Timeout - - - -
Type - - - -
Series - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Reset - - - -
Mounting Type - Surface Mount Through Hole Surface Mount

NCP304LSQ38T1 Datasheet PDF

Download NCP304LSQ38T1 pdf datasheets and onsemi documentation for NCP304LSQ38T1 - onsemi.

Datasheets
NCP304, 305.pdf
HTML Datasheet
NCP304, 305.pdf
Environmental Information
onsemi REACH.pdf onsemi RoHS.pdf

Customer Reviews

Evaluation: 10 Articles

  • Embe***dMotion
    Aug 5, 2026

    Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

  • FPGA***dio
    Jul 30, 2026

    This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.

  • Nord***mbedded
    Jul 20, 2026

    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.

  • Nath***oleman
    Jun 29, 2026

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

  • Emil***rperTech
    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.

  • Liam***terTech
    Jun 15, 2026

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

  • Nath***rooks
    Jun 11, 2026

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

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
NCP304LSQ38T1 Image

NCP304LSQ38T1

onsemi
32D-NCP304LSQ38T1

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