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UC2843DTR The Texas Instruments UC2843DTR is a current mode PWM controller designed for DC-to-DC converters. It operates with an input voltage range of 12V to 28V and features a maximum duty cycle of 97%.
Mfr Part #:

UC2843DTR

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC2843DTR is a current mode PWM controller designed for DC-to-DC converters. It operates with an input voltage range of 12V to 28V and features a maximum duty cycle of 97%.
✓ Total Stock: 60,467 pcs
$ Price Range: $0.54

UC2843DTR Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
Non-Authorised Inventory information
60,267 pcs
On Request
60267 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
200 pcs
On Request
200 pcs On Request 1 On Request On Request 07+ 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.

UC2843DTR 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
Package / Case
Supplier Device Package
Synchronous Rectifier
Topology
Voltage
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UC2843DTR Description

Short technical summary and product information.

The Texas Instruments UC2843DTR is a versatile current mode PWM controller suitable for various off-line and DC-to-DC converter topologies including Boost, Buck, Buck-Boost, Flyback, and Forward. It operates within a voltage range of 12V to 28V and supports a maximum duty cycle of 97% at frequencies up to 500kHz.

 

This controller features essential control functions such as frequency control and a transistor driver output. It is designed for surface mount applications and comes in a 14-SOIC package. The device is optimized for enhanced load-response characteristics and includes undervoltage lockout with hysteresis and double-pulse suppression.

 

Key electrical characteristics include a single output phase and positive, isolation-capable output configuration. The operating temperature range is -40°C to 85°C (TA), making it suitable for a wide array of environmental conditions. The UC2843DTR is designed to minimize external component count for fixed-frequency current-mode control schemes.

UC2843DTR Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC2843DTR Current Mode PWM Controller
Subcategory: Current Mode

UC2843DTR Compliance

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

UC2843DTR Estimated Pricing

Qty Low High
1+ $0.54 $0.54

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

UC2843DTR Features

  • Current mode PWM controller for DC-DC converters.
  • Supports multiple topologies: Boost, Buck, Flyback.
  • Operates from 12V to 28V input voltage.
  • Maximum duty cycle of 97% at 500kHz.
  • Surface mount 14-SOIC package.

UC2843DTR Applications

  • Ideal for off-line power supplies.
  • Suitable for DC-to-DC converters.
  • Used in Boost converter designs.
  • Applicable for Buck converter designs.
  • Flyback converter applications.

UC2843DTR FAQs

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

12V to 28V.

What package is available?

14-SOIC.

What is the operating temperature range?

-40°C to 85°C.

What is the switching frequency?

Up to 500kHz.

What topologies does this controller support?

Boost, Buck, Buck-Boost, Flyback, Forward.

What is the maximum duty cycle?

97%.

Is the output synchronous rectification?

No.

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