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UC3843N The UC3843N from Texas Instruments is an 8-pin PDIP Current Mode PWM Controller. It offers a 1A output current and operates at switching frequencies up to 500kHz.
Mfr Part #:

UC3843N

Available from 1 distributors
Mfr Name: Unitrode
Unitrode
The UC3843N from Texas Instruments is an 8-pin PDIP Current Mode PWM Controller. It offers a 1A output current and operates at switching frequencies up to 500kHz.
✓ Total Stock: 9 pcs
$ Price Range: $1.92

UC3843N Available from 1 distributor

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✓ Non-Authorised
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UC3843N Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Automotive Grade
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Industrial Grade
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Medical Grade
Military Grade
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UC3843N Description

Short technical summary and product information.

The UC3843N is a Current Mode PWM Controller manufactured by Texas Instruments. This component is designed for power management applications and comes in an 8-pin PDIP package suitable for through-hole mounting.

 

Key electrical specifications include an output current capability of 1A, a maximum supply voltage of 30V, and a minimum supply voltage of 7.6V. The device operates with a nominal input voltage of 25V and features a maximum duty cycle of 100%. Its switching frequency can reach up to 500kHz, with a typical operating frequency of 450kHz. The controller supports multiple topologies including Flyback, Boost, and Buck-Boost.

 

Mechanically, the PDIP package has dimensions of 6.35mm width, 5.08mm height, and 9.81mm length, with a weight of approximately 528.6mg. The operating temperature range for the UC3843N is from 0°C to 70°C.

 

This component is RoHS compliant and Lead Free. It is suitable for various power supply designs requiring efficient voltage regulation and control.

UC3843N Quick Information

Product Type: Current Mode PWM Controller
Canonical Name: UC3843N Current Mode PWM Controller
Subcategory: PWM Controller

UC3843N Compliance

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

UC3843N Estimated Pricing

Qty Low High
1+ $1.92 $1.92

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

UC3843N Features

  • Current Mode PWM Controller
  • 1A Output Current
  • Up to 500kHz Switching Frequency
  • 8-Pin PDIP Package
  • Wide Operating Temperature Range

UC3843N Applications

  • Used in power supply designs
  • Suitable for Flyback converters
  • Ideal for Boost converters
  • Applicable to Buck-Boost converters

UC3843N FAQs

6 frequently asked questions generated from this part’s specifications.
What is the output current of the UC3843N?

The UC3843N provides an output current of 1A.

What is the maximum supply voltage for the UC3843N?

The maximum supply voltage for the UC3843N is 30V.

What is the switching frequency of the UC3843N?

The UC3843N has a switching frequency of 500kHz.

What package does the UC3843N come in?

The UC3843N comes in an 8-pin PDIP package.

What is the operating temperature range of the UC3843N?

The UC3843N operates between 0°C and 70°C.

Is the UC3843N RoHS compliant?

The UC3843N is RoHS3 Compliant.

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