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UC2843AQD8R The Texas Instruments UC2843AQD8R is an 8-SOIC current-mode PWM controller. It operates at frequencies up to 500kHz and supports a voltage range of 7.6V to 30V.
Mfr Part #:

UC2843AQD8R

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC2843AQD8R is an 8-SOIC current-mode PWM controller. It operates at frequencies up to 500kHz and supports a voltage range of 7.6V to 30V.
✓ Total Stock: 34,769 pcs
$ Price Range: $0.60

UC2843AQD8R Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
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34,769 pcs
On Request
34769 pcs On Request 1 On Request On Request On Request On Request On Request
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UC2843AQD8R Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Clock Sync
Control Features
Duty Cycle (Max)
Frequency
Function
Mounting Type
Number of Outputs
Operating Temperature
Operating Voltage
Output Configuration
Output Phases
Output Type
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage
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UC2843AQD8R Description

Short technical summary and product information.

The UC2843AQD8R from Texas Instruments is a current-mode Pulse Width Modulation (PWM) controller designed for various power supply applications. This device operates at frequencies up to 500kHz and supports a wide input voltage range from 7.6V to 30V.

 

Key features include a maximum duty cycle of 96% and multiple topology support including Boost, Buck, Flyback, and Forward configurations. It offers essential control features such as frequency control and under-voltage lockout (UVLO) with specific ON and OFF thresholds. The controller is optimized for off-line and DC-to-DC converters, featuring low start-up current and high current totem pole outputs.

 

Packaged in an 8-SOIC (Surface Mount) format, the UC2843AQD8R is suitable for applications requiring compact designs. Its operating temperature range is -40°C to 125°C, making it robust for demanding environments. This controller is well-suited for switch mode power supplies (SMPS), DC-DC converters, power modules, and industrial power supplies.

UC2843AQD8R Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC2843AQD8R Current-Mode PWM Controller
Subcategory: Current Mode

UC2843AQD8R Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

UC2843AQD8R Estimated Pricing

Qty Low High
1+ $0.60 $0.60

Estimated market price range - modelled values for guidance only, not live distributor offers.

UC2843AQD8R Features

  • Current-mode PWM controller IC
  • Operates up to 500kHz frequency
  • Wide voltage range 7.6V to 30V
  • Supports multiple topologies
  • 8-SOIC surface mount package

UC2843AQD8R Applications

  • Optimized for off-line converters
  • Used in DC-to-DC converters
  • Suitable for power modules
  • Ideal for industrial PSUs

UC2843AQD8R FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the UC2843AQD8R?

The operating voltage range is 7.6V to 30V.

What is the operating temperature range?

The operating temperature range is -40°C to 125°C.

What package is the UC2843AQD8R available in?

The UC2843AQD8R is available in an 8-SOIC surface-mount package.

What switching frequency does the UC2843AQD8R support?

The switching frequency is up to 500kHz.

What topologies are supported?

The device supports boost, buck, flyback, and forward topologies.

What is the maximum duty cycle?

The maximum duty cycle is 96%.

Does the device have under-voltage lockout?

Yes, the UVLO turn-on threshold is 8.5V and turn-off threshold is 7.9V.

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