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UC1845AJ The Texas Instruments UC1845AJ is a Current Mode PWM Controller designed for off-line and DC-DC converters. It supports Boost, Flyback, and Forward topologies.
Mfr Part #:

UC1845AJ

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC1845AJ is a Current Mode PWM Controller designed for off-line and DC-DC converters. It supports Boost, Flyback, and Forward topologies.
✓ Total Stock: 13 pcs
$ Price Range: $13.37

UC1845AJ Available from 1 distributor

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UC1845AJ Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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UC1845AJ Description

Short technical summary and product information.

The UC1845AJ from Texas Instruments is a Current Mode PWM Controller optimized for off-line and DC-DC converter applications. This device operates with Boost, Flyback, and Forward topologies and features a maximum duty cycle of 50%.

 

Key electrical characteristics include a low start-up current of less than 0.5mA, a trimmed oscillator discharge current of 8.3mA, and an output stage that can sink at least 10mA during UVLO. The controller supports operation up to 500kHz and includes features such as an error amplifier and multi-topology support.

 

The UC1845AJ is available in CDIP (JG) 8 and LCCC (FK) 20 package types. It is important to note that this part is not recommended for new designs, and users should consider alternate products for new projects.

UC1845AJ Quick Information

Product Type: Current Mode PWM Controller
Canonical Name: UC1845AJ Current Mode PWM Controller
Subcategory: Current Mode PWM Controller

UC1845AJ Compliance

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

UC1845AJ Estimated Pricing

Qty Low High
1+ $13.37 $13.37

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

UC1845AJ Features

  • Current mode PWM controller.
  • Supports Boost, Flyback, Forward topologies.
  • Low start-up current less than 0.5mA.
  • Operates up to 500kHz frequency.
  • High-current totem pole output.

UC1845AJ Applications

  • Used in power supply regulation circuits
  • Suitable for high-frequency power management
  • Ideal for switch-mode power supplies
  • Applicable in voltage regulation modules

UC1845AJ FAQs

6 frequently asked questions generated from this part’s specifications.
What control mode does the UC1845AJ use?

The UC1845AJ uses Current mode control.

What topologies are supported by the UC1845AJ?

The UC1845AJ supports Boost, Flyback, and Forward topologies.

What is the maximum duty cycle for the UC1845AJ?

The maximum duty cycle for the UC1845AJ is 50%.

What is the start-up current for the UC1845AJ?

The start-up current for the UC1845AJ is less than 0.5mA.

What is the maximum operating frequency of the UC1845AJ?

The UC1845AJ can operate up to 500kHz.

What package options are available for the UC1845AJ?

The UC1845AJ is available in CDIP (JG) 8 and LCCC (FK) 20 packages.

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