TrustCompo Website Logo | TrustCompo

UC3842BN PMIC - Voltage Regulators - DC DC Switching Controllers by STMicroelectronics

UC3842BN is a PMIC - Voltage Regulators - DC DC Switching Controllers from STMicroelectronics in DIP packaging. It is commonly reviewed for IC REG CTRLR PWM CM 8-MINIDIP. This page lists current TrustCompo stock, tier pricing, package data, datasheet access, compliance attributes, Hong Kong warehouse shipping options, payment confirmation, and RFQ options for buyers verifying this exact ordering code.

Pictures are for reference only. Please contact us for the latest pictures.

UC3842BN PMIC - Voltage Regulators - DC DC Switching Controllers by STMicroelectronics | TrustCompo
Pictures are for reference only. Please contact us for the latest pictures.
  • 365-Day GuaranteeAfter-sales support helps buyers handle quality questions with a clearer return and review window.
  • Ships within 24-48 HoursAvailable items can move quickly once the quote, quantity, and delivery details are confirmed.
  • 100% Anti-Counterfeit TestedParts are checked through authenticity-focused handling and inspection before shipment.

Key specifications

Part Number

UC3842BN

Internal code

TCE000092174

Package

DIP

Key specifications

Series

-

Min Quantity

1

Description

IC REG CTRLR PWM CM 8-MINIDIP

key Attributes

-

Trust signals

Quality and trust signals

Review TrustCompo quality credentials, traceability support, anti-counterfeit handling, and inspection controls before sending an RFQ.

4 certifications
  • ISO 9001

    Quality management processes for more consistent sourcing and handling.

  • AS9120B

    Aerospace-focused distribution controls for traceability and reliability.

  • ISO 14001

    Environmental management discipline across warehouse and operating workflows.

  • ESD Control

    Electrostatic handling standards to help protect sensitive components.

RFQ checklist

Order process

Confirm the core buying details for UC3842BN before RFQ, PO release, and shipment planning.

  1. 1

    Confirm MPN

    Use the exact part number, manufacturer, package, and approval constraints in the RFQ.

  2. 2

    Check stock and price

    Verify live availability, MOQ, lead time, final unit price, and tax terms before PO release.

  3. 3

    Align documents

    Confirm datasheet, CoC, traceability, lifecycle notes, and inspection scope when required.

  4. 4

    Arrange shipment

    Release the PO and align DHL, FedEx, UPS, or buyer forwarder shipment from Hong Kong.

Before PO release

Part confirmation

  • Exact MPN confirmed: UC3842BN
  • Package to verify: DIP

Commercial confirmation

  • Live stock and lead time confirmed by RFQ
  • Final price and tax terms confirmed before PO release

Fulfillment & documents

  • Ship-from location: Hong Kong warehouse
  • Shipping method: DHL, FedEx, UPS, or buyer forwarder account

Product overview

Product overview

Review the sourcing context for UC3842BN from STMicroelectronics, including product identity, application fit, package notes, and purchasing considerations.

The UC3842BN is a high-performance, fixed-frequency current-mode PWM (Pulse Width Modulation) controller designed for use in a variety of power supply applications. Manufactured by STMicroelectronics, this integrated circuit is particularly well-suited for off-line and DC-DC converter applications, including switch-mode power supplies (SMPS).

Key Features:

  1. Operating Voltage Range: The UC3842BN operates over a wide input voltage range, typically from 8V to 40V, making it versatile for different power supply designs.
  2. Current Mode Control: This controller employs current mode control, which enhances the system's response to load changes and provides inherent overcurrent protection. This feature allows for improved stability and transient response.
  3. Fixed Frequency Operation: The UC3842BN operates at a fixed switching frequency, typically around 100 kHz, which simplifies the design of the output filter and reduces electromagnetic interference (EMI).
  4. Integrated Features: The IC includes several integrated features such as:
    • A high-speed comparator for PWM control.
    • A reference voltage source (typically 5V) for biasing and feedback.
    • A soft-start function to limit inrush current during startup.
    • A dead-time control to prevent shoot-through in half-bridge configurations.
  5. Output Stage: The output stage of the UC3842BN is capable of driving external power MOSFETs directly, providing a low-impedance output for efficient switching.
  6. Thermal and Overcurrent Protection: The device includes thermal shutdown and overcurrent protection features, ensuring reliable operation under various conditions.
  7. Package Type: The UC3842BN is available in a 14-pin DIP (Dual In-line Package) form factor, which is suitable for through-hole mounting. This package design facilitates easy integration into various circuit boards.

Applications:

The UC3842BN is widely used in applications such as:

  • AC-DC power supplies for consumer electronics.
  • DC-DC converters for battery-powered devices.
  • Power management systems in industrial equipment.
  • Isolated and non-isolated power supply designs.

Performance Characteristics:

  • Temperature Range: The operating temperature range is typically from -40°C to +125°C, allowing for use in a variety of environmental conditions.
  • Efficiency: The current-mode control and fixed frequency operation contribute to high efficiency in power conversion, minimizing energy losses.

Conclusion:

The UC3842BN from STMicroelectronics is a robust and versatile PWM controller that provides essential features for designing efficient and reliable power supply systems. Its combination of current mode control, integrated protection features, and ease of use makes it a popular choice among engineers for various power management applications.

Technical parameters

Parameters

Compare grouped UC3842BN parameters from STMicroelectronics, including package, series, key attributes, and technical values used for engineering and sourcing review.

  • Product Attribute

    Part Status

    Active

  • Product Attribute

    Mounting Type

    Through Hole

  • Product Attribute

    Lead Free

    Lead Free

  • Product Attribute

    Packaging

    Tube

  • Product Attribute

    Factory Lead Time

    14 Weeks

  • Product Attribute

    Categories

    Integrated Circuits (ICs)

UC3842BN Product Attribute
ParameterValue
Part Status

Lifecycle status of the part, such as active or obsolete. Indicates availability and long-term support from the manufacturer. Check this before design-in to avoid last-time buys or supply disruptions. Verify with the datasheet or distributor for current status.

Active
Mounting Type

Specifies how the component is attached to the PCB, such as through-hole or surface mount. This affects assembly processes, thermal performance, and mechanical strength. Buyers should verify compatibility with their manufacturing capabilities and design requirements.

Through Hole
Lead Free

Indicates whether the component is manufactured without lead, complying with RoHS and similar regulations. Check this attribute to ensure environmental compliance for your market. Verify against the datasheet for exact material declarations.

Lead Free
Packaging

Indicates the form of delivery for the component, such as tape and reel, tube, or tray. This affects handling, storage, and assembly processes. Verify the packaging type matches your production requirements and equipment compatibility.

Tube
Factory Lead Time

Indicates the typical duration from order confirmation to shipment from the manufacturer's facility. This helps you plan production schedules and inventory. Verify current lead times with your distributor or supplier, as they may vary based on order quantity, product availability, and market conditions.

14 Weeks
Categories

Lists the product categories or classifications assigned to this component, such as connectors, capacitors, or modules. This helps in filtering and comparing similar parts. Review the categories to ensure the component fits your application and to find alternative parts in the same class.

Integrated Circuits (ICs)
Terminal Position

Position of the terminals on the package, such as dual-in-line, gull-wing, or J-lead. This affects PCB layout, soldering, and thermal performance. Engineers must ensure the terminal position matches the footprint and assembly capabilities of their manufacturing line.

DUAL
Tolerance

Allowed deviation from the nominal value, expressed as a percentage. Determines precision of resistors, capacitors, and inductors. Choose tighter tolerance for precision circuits, but verify actual performance in the datasheet.

1%
Lifecycle Status

Current stage in the product's lifecycle, such as Active, Obsolete, or End of Life. This indicates availability and long-term supply risk. Check this before designing in a part to ensure it will be available for your product's production lifetime.

ACTIVE (Last Updated: 7 months ago)
Subcategory

A more specific classification within the main product category, such as 'Ceramic Capacitor' under 'Capacitors'. This helps narrow down search results and compare similar components. Use it to filter products with similar characteristics and intended applications.

Switching Regulator or Controllers
Manufacturer

Identifies the company that designed and produced the component. Buyers often filter by manufacturer to ensure brand reliability, quality standards, and supply chain consistency. Verify the manufacturer against the datasheet and official packaging to avoid counterfeit parts.

STMicroelectronics
Package / Case

Physical package or case type of the component, defining its dimensions, mounting style, and thermal characteristics. Common types include SMD, through-hole, BGA, and QFN. Choose the package that fits your PCB layout and assembly process. Verify the exact package code in the datasheet for footprint compatibility.

8-DIP (0.300, 7.62mm)
Mounting Type

Specifies how the component attaches to the PCB or assembly, such as surface mount, through-hole, or chassis mount. This affects soldering process, mechanical stability, and thermal performance. Verify compatibility with your board layout and assembly capabilities.

Through Hole
Technology

Manufacturing technology or process used for the component, such as thin film, thick film, or semiconductor process. Affects performance, stability, and cost. Confirm the technology matches your application requirements and environmental conditions.

BIPOLAR
Number Of Outputs

Specifies how many independent output channels the component provides. Compare this when selecting power supplies, drivers, or modules to ensure the device can drive all required loads. Always verify against the datasheet for exact output configuration.

1
Number Of Pins

Total number of pins or contacts on the component. This determines the footprint and mating connector requirements. Always match the pin count to your PCB layout and connector specification to ensure proper electrical and mechanical connection.

8
Number Of Terminations

Indicates the total number of electrical connection points on the component, such as pins or pads. This is critical for PCB footprint design and assembly. Verify it matches the package specification to ensure proper soldering and connectivity.

8
Terminal Pitch

Terminal pitch is the center-to-center distance between adjacent leads or pads on a component. It determines PCB layout compatibility and soldering feasibility. Verify against the datasheet to ensure your footprint matches the component's actual lead spacing.

2.54mm
Power Dissipation

Maximum power the component can safely dissipate as heat without exceeding its thermal limits. Compare this rating with your application's expected power loss to ensure reliable operation. Always verify against the datasheet's derating curves and ambient temperature conditions.

1.25W
Output Current

Current supplied at the output, indicating the load-driving capability of the component. This is crucial for ensuring the component can drive downstream circuitry without overheating or voltage drop. Compare with your load requirements and check the datasheet for maximum ratings.

200mA
Width

Physical width of the component body, typically in millimeters. Essential for PCB footprint design and mechanical fit. Verify against the datasheet to ensure proper clearance and compatibility with your board layout and enclosure.

6.6mm
Weight

Specifies the physical weight of the electronic component, important for logistics, shipping cost, and mechanical design. Verify the exact weight in the datasheet or packaging information, as it may vary with packaging type and quantity.

930.006106mg
Length

Specifies the physical length of the component body, typically in millimeters. This dimension is critical for PCB layout and mechanical fit. Verify against the datasheet to ensure proper clearance and alignment in your design.

10.92mm
Reference Voltage

Specifies the stable voltage output used as a benchmark for the component's operation. Compare this value when selecting voltage references or regulators. Always verify against the datasheet for accuracy and temperature stability.

5V
Max Power Dissipation

Maximum power the component can safely dissipate as heat without damage. Exceeding this may cause failure. Check datasheet for thermal resistance and derating curves under your operating conditions.

1.25W
Output Voltage

Specifies the regulated voltage level available at the output pin under specified load and input conditions. Compare this value with your circuit requirements and verify against the datasheet's tolerance and temperature derating.

5.1V
Max Supply Current

Maximum current drawn from the power supply under specified operating conditions. Compare this value across similar components to estimate power consumption and thermal load. Always verify against the datasheet for your exact supply voltage and load scenario.

17mA
Quiescent Current

Quiescent current is the current drawn by the device when it is in standby or no-load condition. It affects battery life in portable applications. Compare this value across similar components to ensure low power consumption. Always verify against the datasheet for your specific operating conditions.

12mA
Synchronous Rectifier

Indicates whether the device uses synchronous rectification to improve efficiency by replacing diodes with low-resistance MOSFETs. Check this attribute when comparing power supply designs, as it affects thermal performance and conversion losses. Verify against the datasheet for the specific topology.

No
Output Type

Specifies the electrical form of the output signal, such as digital, analog, or open collector. This determines how the component interfaces with your circuit. Verify the output type against your system requirements and the datasheet to ensure proper signal compatibility and avoid logic level mismatches.

Transistor Driver
Sub-Categories

Indicates the specific product subcategories or classifications within the broader component family. Helps narrow down search results and identify the exact type of component needed for your design. Review the subcategory to ensure compatibility with your application.

PMIC - Voltage Regulators - DC DC Switching Controllers
Duty Cycle (Max)

Maximum ratio of on-time to switching period for PWM controllers and power converters. Compare this value when selecting devices for applications requiring precise pulse width modulation. Verify against the datasheet to ensure the device can sustain the required duty cycle without performance degradation.

96%
Data Rate (Max)

Maximum data transfer rate supported. This is crucial for high-speed communication interfaces. Ensure the component can handle your required throughput with margin. Compare with the datasheet's specifications to avoid bottlenecks in your data path.

PULSE WIDTH MODULATION
Serial Interfaces

List of supported serial communication interfaces, such as SPI, I2C, UART, or CAN. This determines how the component communicates with your system. Verify that the required interfaces are available and compatible with your microcontroller or processor.

SINGLE
Package Contents

Specifies the items included in the product package, such as connectors, cables, mounting hardware, or documentation. Verify this list against the datasheet or manual to ensure you have all necessary components for installation and operation.

50 ns
Base Part Number

Identifies the core product family without package, grade, or option suffixes. Use this to compare equivalent components across manufacturers and to locate the primary datasheet. Verify the full ordering code against the manufacturer's specification before design-in.

UC3842
Height

Physical height of the component, measured from the mounting surface to the topmost point. This dimension is critical for clearance in compact assemblies and for ensuring proper fit within enclosures. Always verify against the datasheet for tolerance and mounting considerations.

3.32mm
Frequency

Operating frequency of the component, typically the clock or switching frequency. This determines the speed of operation and affects power dissipation and signal integrity. Verify the frequency range against your application's requirements and the datasheet specifications.

250kHz
Display & Interface Controllers

Specifies the type of controller IC used to drive displays or manage communication interfaces. Verify compatibility with your display panel or bus protocol. Compare power consumption, supported resolutions, and interface standards before selecting a part for your design.

Step-Up, Step-Up/Step-Down
ESD Protection

Indicates whether the component has built-in electrostatic discharge protection. This is crucial for devices that interface with external connectors or are handled during assembly. ESD protection helps prevent damage from static electricity, improving reliability in harsh environments. Verify if your application requires this feature.

Boost, Flyback
Manufacturer'S Part No.

The unique part number assigned by the original component manufacturer. Use this to cross-reference datasheets, verify specifications, and ensure the exact component matches your design requirements. Always confirm the number against the manufacturer's official documentation.

UC3842BN
Operating Temperature

Specifies the ambient temperature range within which the component reliably functions. Compare this with your application's thermal environment to ensure proper operation. Always verify against the datasheet for derating curves and maximum ratings.

0°C~70°C TJ
UC3842BN Product Parameter
ParameterValue
Terminal Finish

Specifies the plating material on component terminals, affecting solderability, corrosion resistance, and long-term reliability. Compare finishes like tin, gold, or silver for your assembly process and environmental requirements. Verify against datasheet for compliance.

Matte Tin (Sn) - annealed
Output Configuration

Specifies the topology of the output stage, such as push-pull, open collector, or half-bridge. This determines how the device drives loads and interfaces with external circuitry. Verify against the datasheet to ensure compatibility with your application's requirements.

Positive
Analog IC - Other Type

Select this category when the analog integrated circuit does not fit standard classifications like op-amps, comparators, or regulators. Verify the exact function and pinout in the datasheet to ensure compatibility with your circuit design and performance requirements.

SWITCHING CONTROLLER
Nominal Input Voltage

Specifies the standard input voltage level for which the component is designed to operate. Engineers compare this to the actual supply voltage to ensure compatibility. Always verify against the datasheet for absolute maximum ratings and recommended operating conditions.

15V
Rise Time

Time required for a signal to transition from a low to a high level, typically measured between 10% and 90% of the amplitude. Important for digital interfaces, switching regulators, and pulse circuits. Check the datasheet for test conditions and load capacitance.

50ns
Control Features

Specifies additional control functions like enable, soft-start, or power-good. These features affect system design and sequencing. Verify which controls are available in the datasheet to ensure compatibility with your application requirements.

Frequency Control
Function

Specifies the logical or operational function of the component, such as switching, amplification, or regulation. This attribute helps identify the device's role in a circuit. Verify the function against the datasheet to ensure it matches your application requirements.

CURRENT-MODE
Frequency - Switching

Indicates the switching frequency of a power converter or regulator. Higher frequencies allow smaller magnetics but may increase losses. Compare with your design's efficiency and EMI requirements, and verify the actual range in the datasheet.

Up to 500kHz
Number Of Backplanes

Indicates how many backplane boards the system or chassis can accommodate. Compare this value with your enclosure's slot capacity and the backplane's form factor to ensure proper fit and signal routing. Verify against the datasheet for supported configurations.

100 %
Voltage - Supply (Vcc/Vdd)

Indicates the recommended supply voltage range for the component. This is critical for proper operation and must be matched to your power rail. Always verify the absolute maximum ratings and recommended operating conditions in the datasheet to avoid damage or malfunction.

10V~30V
RF Family/Standard

Indicates the wireless communication standard or protocol family, such as Bluetooth, Wi-Fi, or Zigbee. Helps identify compatibility with target applications and system requirements. Verify against the datasheet to ensure the device supports the required RF standard.

15V
UC3842BN Export Classifications & Environmental
ParameterValue
JESD-609 Code

This code indicates the terminal finish material per JESD-609 standard. It helps identify the plating type for soldering compatibility and environmental compliance. Check the datasheet for the exact code and its meaning.

e3
RoHS Status

Indicates whether the component complies with the EU RoHS directive restricting hazardous substances. Buyers should verify this status for regulatory compliance and market access. Check the datasheet or certificate for exact compliance details.

ROHS3 Compliant
REACH SVHC

Indicates whether the product contains substances of very high concern as per the REACH regulation. Buyers should verify this for compliance with EU environmental standards, especially when exporting to Europe. Check the manufacturer's declaration or datasheet for accurate SVHC status.

No SVHC
Moisture Sensitivity Level (MSL)

Indicates the floor life of a component before it must be baked prior to soldering. Higher levels require stricter handling and shorter exposure times. Verify the MSL rating in the datasheet to ensure proper storage and assembly conditions.

1 (Unlimited)
ECCN Code

Export Control Classification Number assigned by the U.S. Commerce Department. It determines export licensing requirements for electronic components. Verify the ECCN against the manufacturer's datasheet or export compliance documentation before shipping internationally.

EAR99

Datasheet preview

Datasheet PDF viewer

Preview the UC3842BN datasheet from STMicroelectronics to check package, electrical characteristics, application notes, and document evidence before RFQ.

STMicroelectronics

UC3842BN

Page 1 of 0
/ —
Search within the PDF viewer.Try
Loading PDF viewer...

Notice documents

PCN / product notice documents

0 documents

No public PCN / PDN records currently displayed

No public product notice document is currently displayed for UC3842BN. Confirm PCN, PDN, EOL, date code, and lifecycle status during RFQ before production purchase.

Common questions

Product FAQ

Targeted answers for buyers verifying the exact UC3842BN ordering code, packaging, stock, datasheet, and replacement path.

What does UC3842BN mean?

UC3842BN is the exact ordering code listed for a PMIC - Voltage Regulators - DC DC Switching Controllers component from STMicroelectronics. The current package reference is DIP, with listed context including IC REG CTRLR PWM CM 8-MINIDIP. Buyers should use the full code when requesting stock, price, datasheet, or compliance confirmation.

How should buyers verify the UC3842BN ordering code?

Treat UC3842BN as the full ordering code during RFQ and engineering review. Confirm the listed DIP package, manufacturer documentation from STMicroelectronics, datasheet ordering table, reel or packing details, and any customer approval constraints before substitution or PO release.

What package is UC3842BN supplied in?

UC3842BN is currently listed with package reference DIP from STMicroelectronics. Buyers should confirm the manufacturer package drawing, footprint, pinout, tape-and-reel details, and receiving requirements before approval.

Is UC3842BN currently available?

UC3842BN is currently marked with stock availability on this page. Before ordering, confirm the package (DIP), listed stock (92537), available quantity (20282), required quantity, lead time, final price, compliance needs, and exact ordering code match through RFQ.

Where can I compare UC3842BN alternatives?

A mapped alternative list is not currently published for UC3842BN. Send an RFQ with the target quantity, package constraints, and approval requirements so TrustCompo can help review credible replacement options.