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UCC3946D PMIC - Supervisors by Texas Instruments

UCC3946D is a PMIC - Supervisors from Texas Instruments in 8-SOIC packaging. It is commonly reviewed for IC UP SUPERVISOR W/WDT 8-SOIC. 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.

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UCC3946D PMIC - Supervisors by Texas Instruments | TrustCompo
Pictures are for reference only. Please contact us for the latest pictures.
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Key specifications

Part Number

UCC3946D

Internal code

TCE000113917

Package

8-SOIC

Manufacturer
Texas Instruments

Key specifications

Series

-

Min Quantity

1

Description

IC UP SUPERVISOR W/WDT 8-SOIC

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 UCC3946D 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: UCC3946D
  • Package to verify: 8-SOIC

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 UCC3946D from Texas Instruments, including product identity, application fit, package notes, and purchasing considerations.

General description
The PUCC3801 is a current-mode Pulse Width Modulated (PWM) controller containing all the control and protection functions necessary to implement an off-line, flyback or forward converter with a minimum number of external components.
Features
• Very low start-up supply current; 50 µA typical
• Low operating supply current; 1.2 mA typical
• Accurate, internally-trimmed, fixed frequency oscillator (100 kHz). No external timing components needed
• Internal slope compensation. No external ramp components needed
• Built-in over-voltage and under-voltage detection
• High-speed over-current trip; 170 ns typical
• Over-voltage clamp on supply voltage (VDD)
• Internal divider regulates VDD to 12 V. No external divider needed
• Leading edge blanking of the current sense signal
• Control frequency modulated over a narrow band to reduce Electromagnetic Interference (EMI)
• High output drive capability; 150 ns typical rise and fall time into 2 nF load
• Wide bandwidth (10 MHz) error amplifier with external compensation pin and simple interface to optocoupler
• Accurate internal bandgap reference.Applications
• Off-line switched mode power supplies
• Laptop computer mains adaptors
• Printer power supplies.

Technical parameters

Parameters

Compare grouped UCC3946D parameters from Texas Instruments, including package, series, key attributes, and technical values used for engineering and sourcing review.

  • Product Attribute

    Part Status

    Active

  • Product Attribute

    Lead Free

    Lead Free

  • Product Attribute

    Packaging

    Tube

  • Product Attribute

    Mounting Type

    Surface Mount

  • Product Attribute

    Lifecycle Status

    ACTIVE (Last Updated: 5 days ago)

  • Product Attribute

    Factory Lead Time

    6 Weeks

UCC3946D 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
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
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.

Surface Mount
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: 5 days ago)
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.

6 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
Peak Reflow Temperature (Cel)

Maximum temperature during reflow soldering that the component can withstand. This is critical for solder joint reliability and preventing damage. Verify that the peak reflow temperature is compatible with your soldering profile and the component's moisture sensitivity level.

260
Terminal Form

Describes the physical configuration of the component's leads or pads, such as through-hole, surface mount, or gull-wing. This affects PCB layout, soldering process, and mechanical fit. Confirm compatibility with your assembly method and footprint.

GULL WING
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.

Texas
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.

3.91mm
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.

1.75mm
Minimum Supply Voltage

Specifies the lowest DC input voltage at which the component reliably operates. Compare this value with your system's power rail tolerances and the device's recommended operating conditions to ensure stable performance across all load and temperature ranges.

2V
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 TA
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-SOIC (0.154, 3.90mm Width)
Operating Supply Current

The amount of current the device draws from its power supply during normal operation. This is essential for power budget calculations, thermal management, and selecting appropriate power sources. Check datasheet for typical and maximum values under specified conditions.

10μA
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.

BICMOS
Type

Select the component category that best matches your application, such as resistor, capacitor, diode, or connector. This classification helps narrow down the correct part family and ensures compatibility with your circuit design. Verify the type against the datasheet to avoid mismatches.

Simple Reset/Power-On Reset
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 - Supervisors
Number Of Functions

Specifies the count of independent functions or channels integrated into a single component package. This helps engineers determine if the part can handle multiple signal paths or operations simultaneously. Verify against the datasheet to ensure the device meets your circuit's functional requirements.

1
Radiation Hardening

Indicates if the component is designed to withstand ionizing radiation in space, nuclear, or high-energy physics applications. Compare radiation-tolerant vs. radiation-hardened parts for mission-critical designs. Verify the total ionizing dose (TID) and single-event effect (SEE) ratings in the datasheet.

No
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.

Surface Mount
Pb-Free Code

Indicates whether the component is lead-free per RoHS or other directives. Buyers use this to verify environmental compliance and avoid restricted substances. Always confirm with the datasheet or certificate of compliance.

yes
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
Pin Count

Total number of pins or terminals on the component package. Essential for footprint design, PCB layout, and connector mating. Verify against the datasheet to ensure compatibility with your board and assembly process.

8
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.

4.9mm
Max Supply Voltage

Indicates the highest DC or AC voltage that can be safely applied to the power supply pin without risking damage or malfunction. Verify this limit against the datasheet before designing your circuit to ensure reliable operation under all conditions.

5.5V
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.

10μA
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.

Power Management Circuits
Reset

Specifies the reset capability of the component, such as power-on reset, manual reset, or watchdog reset. Engineers compare reset types to ensure proper system initialization and fault recovery. Verify the reset threshold and timing against the datasheet for reliable operation.

Active Low
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.

5.5V
Nominal Supply Current

Typical current drawn from the supply under nominal operating conditions. Compare this value across similar components to estimate power consumption and thermal behavior. Always verify against the datasheet for your specific voltage and load conditions.

18μA
Voltage - Threshold

Specifies the voltage level at which a supervisory or detection circuit triggers a reset or alert. Compare this value with your system's operating range to ensure reliable monitoring. Always verify against the datasheet for exact tolerances and temperature dependence.

Adjustable/Selectable
Element Configuration

Describes the internal arrangement of components, such as resistor networks or switch contacts. This affects the circuit topology and pinout. Engineers must verify this configuration against the datasheet to ensure correct integration into the PCB layout and proper functionality.

1
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.

UCC3946
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.

UCC3946D
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.

18μA
Threshold Voltage

The minimum gate-to-source voltage that makes the device start conducting. Compare this value across parts to ensure your drive circuit can reliably turn the switch on. Always verify against the datasheet for your operating temperature.

1.235
Min Reset Threshold Voltage

Specifies the lowest voltage level at which the reset signal is asserted. Compare this value with the operating voltage range to ensure reliable system reset during power-up or brownout conditions. Verify against the datasheet for your specific supply rail.

1.19V
Repetitive Peak Off-State Voltage

This is the maximum repetitive peak voltage that can be applied across the device in the off state. It is a critical rating for thyristors and triacs, defining the safe operating limit under normal AC conditions. Always verify this value against the datasheet to ensure reliable performance.

160ms Minimum
Max Reset Threshold Voltage

The highest voltage level at which the reset signal is triggered. This is critical for ensuring the system resets before the supply drops below a safe operating level. Compare this threshold with your minimum required operating voltage to guarantee reliable reset behavior.

1.26V
Pulsed Drain Current-Max (IDM)

Maximum drain current under pulsed conditions, often specified with a pulse width and duty cycle. Compare this value with the continuous drain current rating to understand the device's peak current capability. Verify the pulse conditions in the datasheet to ensure they match your application's switching requirements.

1.26V
UCC3946D 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.

Nickel/Palladium/Gold (Ni/Pd/Au)
Power Supplies

Specifies the required power supply voltages for the component. Engineers use this to ensure the board's power rails match the device's needs. Verify against the datasheet's recommended operating conditions to avoid undervoltage or overvoltage issues.

2.5/5V
Number Of Channels

Specifies how many independent signal paths or outputs the component provides. Compare this value with your circuit requirements to ensure each channel can be used separately. Verify the channel configuration in the datasheet, as some devices may share pins or have internal connections.

1
Total Dose

Total ionizing dose tolerance for radiation-hardened components. Indicates maximum cumulative radiation exposure before performance degrades. Critical for aerospace, nuclear, and medical applications. Verify against datasheet for mission-specific radiation requirements.

1.58mm
Tim

Thermal interface material used between a component and heatsink to improve heat transfer. Type and thickness affect thermal resistance. Choose based on application and mounting pressure. Confirm compatibility with component package.

Yes
Adjustable Threshold

Check whether the device's threshold voltage or current can be set by the user. This matters for comparators, voltage detectors, and supervisory circuits. Verify the adjustment range and method in the datasheet before selecting the part for your application.

YES
Output Type

Specifies the electrical output configuration of the component, such as single-ended, differential, push-pull, or open-collector. This affects signal integrity and interface compatibility. Verify against the datasheet to ensure it matches your circuit requirements.

Push-Pull, Totem Pole
UCC3946D Export Classifications & Environmental
ParameterValue
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
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.

e4
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.

2 (1 Year)
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

Notice documents

PCN / product notice documents

0 documents

No public PCN / PDN records currently displayed

No public product notice document is currently displayed for UCC3946D. 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 UCC3946D ordering code, packaging, stock, datasheet, and replacement path.

What does UCC3946D mean?

UCC3946D is the exact ordering code listed for a PMIC - Supervisors component from Texas Instruments. The current package reference is 8-SOIC, with listed context including IC UP SUPERVISOR W/WDT 8-SOIC. Buyers should use the full code when requesting stock, price, datasheet, or compliance confirmation.

How should buyers verify the UCC3946D ordering code?

Treat UCC3946D as the full ordering code during RFQ and engineering review. Confirm the listed 8-SOIC package, manufacturer documentation from Texas Instruments, datasheet ordering table, reel or packing details, and any customer approval constraints before substitution or PO release.

What package is UCC3946D supplied in?

UCC3946D is currently listed with package reference 8-SOIC from Texas Instruments. Buyers should confirm the manufacturer package drawing, footprint, pinout, tape-and-reel details, and receiving requirements before approval.

Is UCC3946D currently available?

UCC3946D is currently marked with stock availability on this page. Before ordering, confirm the package (8-SOIC), listed stock (10000), available quantity (10000), required quantity, lead time, final price, compliance needs, and exact ordering code match through RFQ.

Where can I compare UCC3946D alternatives?

A mapped alternative list is not currently published for UCC3946D. Send an RFQ with the target quantity, package constraints, and approval requirements so TrustCompo can help review credible replacement options.