UC2843AD The Texas Instruments UC2843AD is a current mode PWM controller designed for AC/DC and DC/DC converters. It operates with a voltage range of 7.6V to 30V and a frequency up to 500kHz.
Mfr Part #:

UC2843AD

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC2843AD is a current mode PWM controller designed for AC/DC and DC/DC converters. It operates with a voltage range of 7.6V to 30V and a frequency up to 500kHz.
✓ Total Stock: 36,998 pcs
$ Price Range: $0.66

UC2843AD Available from 3 distributors

✓ Authorised
✓ Non-Authorised

UC2843AD Specifications Quick View

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

UC2843AD Description

Short technical summary and product information.

The UC2843AD from Texas Instruments is a versatile current mode PWM controller optimized for off-line and DC-DC converters. It supports multiple topologies including Boost, Buck, Flyback, and Forward configurations.

 

This controller features an operating voltage range of 7.6V to 30V and can operate at frequencies up to 500kHz. Key electrical characteristics include a maximum duty cycle of 96% and a low startup current of less than 0.5mA. It also incorporates features like frequency control, current limiting, and undervoltage lockout with hysteresis.

 

The UC2843AD is available in a 14-SOIC package and is designed for surface mount applications. Its operating temperature range is -40°C to 85°C. The device provides a transistor driver output and is capable of positive and isolation configurations.

UC2843AD Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC2843AD Current Mode PWM Controller
Subcategory: DC DC Switching Controllers

UC2843AD Compliance

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

UC2843AD Estimated Pricing

Qty Low High
1+ $0.66 $0.66

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

UC2843AD Features

  • Current mode PWM controller
  • Operates up to 500kHz frequency
  • Wide 7.6V to 30V voltage range
  • Supports multiple converter topologies
  • Surface mount 14-SOIC package

UC2843AD Applications

  • Ideal for DC-DC converters
  • Suitable for off-line power supplies
  • Used in boost converter designs
  • Applicable to buck converter designs
  • Flyback and forward converter circuits

UC2843AD FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the UC2843AD?

7.6V to 30V.

What package is the UC2843AD available in?

14-SOIC (0.154", 3.90mm Width) surface mount package.

What is the operating temperature range?

-40°C to 85°C.

What topologies does the UC2843AD support?

Boost, buck, flyback, and forward.

What is the maximum switching frequency?

Up to 500kHz.

Does the UC2843AD have a startup current feature?

Yes, with startup current less than 0.5mA.

What is the UVLO threshold?

8.4V/7.6V.

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