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UC3843ADTR The Texas Instruments UC3843ADTR is a current mode PWM controller designed for AC/DC and DC/DC power supplies. It operates up to 500kHz and features a 1A output current capability.
Mfr Part #:

UC3843ADTR

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3843ADTR is a current mode PWM controller designed for AC/DC and DC/DC power supplies. It operates up to 500kHz and features a 1A output current capability.
✓ Total Stock: 2,445 pcs
$ Price Range: $0.78

UC3843ADTR Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Xingangxin ✓
Non-Authorised Inventory information
2,005 pcs
On Request
2005 pcs On Request 1 On Request On Request On Request On Request On Request
Bristol Electronics ✓
Non-Authorised Inventory information
440 pcs
On Request
440 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

UC3843ADTR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Sync
Control Features
Current
Duty Cycle
Duty Cycle (Max)
Frequency
Function
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Phases
Output Type
Package Quantity
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage
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UC3843ADTR Description

Short technical summary and product information.

The UC3843ADTR from Texas Instruments is a versatile current mode PWM controller, optimized for off-line and DC-DC converters. This device operates with an input voltage range of 7.6V to 30V and supports frequencies up to 500kHz.

 

Key electrical features include a 1A output current, a maximum duty cycle of 96%, and an undervoltage lockout (UVLO) with hysteresis at 8.4V/7.6V. It offers features such as automatic feedforward compensation, pulse-by-pulse current limiting, and a high-current totem pole output.

 

Packaged in a 14-SOIC surface mount configuration, the UC3843ADTR is suitable for applications requiring efficient power conversion. Its operating temperature range is 0°C to 70°C.

 

This controller is designed to provide the necessary features for controlling current-mode or switched-mode power supplies, offering improved performance over previous generations with low start-up current.

UC3843ADTR Quick Information

Product Type: DC DC Switching Controller
Series: UCx84xA
Canonical Name: UC3843ADTR Current Mode PWM Controller
Subcategory: Current Mode

UC3843ADTR Compliance

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

UC3843ADTR Estimated Pricing

Qty Low High
1+ $0.78 $0.78

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

UC3843ADTR Features

  • Current mode PWM controller for power supplies.
  • Operates up to 500kHz frequency.
  • Wide 7.6V to 30V operating voltage.
  • 1A output current capability.
  • Surface mount 14-SOIC package.

UC3843ADTR Applications

  • Used in DC DC power supply designs.
  • Suitable for boost converter circuits.
  • Ideal for flyback converter applications.
  • Used in forward converter topologies.
  • Applicable in buck converter designs.

UC3843ADTR FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the UC3843ADTR?

The operating voltage range for the UC3843ADTR is 7.6V to 30V.

What is the maximum operating frequency of the UC3843ADTR?

The UC3843ADTR can operate at frequencies up to 500kHz.

What is the package type for the UC3843ADTR?

The UC3843ADTR is available in a 14-SOIC package.

What is the operating temperature range for this controller?

The operating temperature range for the UC3843ADTR is 0°C to 70°C.

What is the output current capability of the UC3843ADTR?

The UC3843ADTR has an output current capability of 1A.

What is the duty cycle of the UC3843ADTR?

The maximum duty cycle for the UC3843ADTR is 96%.

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