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UC3844DTR The Texas Instruments UC3844DTR is a current mode PWM controller designed for DC-to-DC converters. It operates up to 500kHz and comes in a 14-SOIC package.
Mfr Part #:

UC3844DTR

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3844DTR is a current mode PWM controller designed for DC-to-DC converters. It operates up to 500kHz and comes in a 14-SOIC package.
✓ Total Stock: 120,533 pcs
$ Price Range: $0.27

UC3844DTR Available from 1 distributor

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✓ Non-Authorised
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Romaks Technologies ✓
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120,533 pcs
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120533 pcs On Request 1 On Request On Request On Request On Request On Request
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UC3844DTR 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 Quantity
Supplier Device Package
Synchronous Rectifier
Topology
Voltage
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UC3844DTR Description

Short technical summary and product information.

The UC3844DTR from Texas Instruments is a single-ended, current mode PWM controller optimized for off-line and DC-to-DC converters. It features a maximum operating frequency of 500kHz and a maximum duty cycle of 48%. The device operates within a voltage range of 12V to 28V and has an operating temperature range of 0°C to 70°C.

 

Key electrical features include low start-up current (<1mA), automatic feedforward compensation, pulse-by-pulse current limiting, and enhanced load-response characteristics. It also incorporates undervoltage lockout with hysteresis and double-pulse suppression. The output stage is a high-current totem-pole design, and it includes an internally trimmed bandgap reference and an error amplifier with low output resistance.

 

This controller is suitable for various topologies including Boost, Buck, Buck-Boost, Flyback, and Forward converters. It is available in a 14-SOIC package designed for surface mounting. The UC3844DTR is a versatile component for power management applications requiring precise control and efficient operation.

UC3844DTR Quick Information

Product Type: DC DC Switching Controller
Series: UC3844
Canonical Name: UC3844 Current Mode PWM Controller
Subcategory: Current Mode

UC3844DTR Compliance

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

UC3844DTR Estimated Pricing

Qty Low High
1+ $0.27 $0.27

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

UC3844DTR Features

  • Current mode PWM controller for DC-to-DC.
  • Operates up to 500kHz frequency.
  • Features undervoltage lockout with hysteresis.
  • Surface mount 14-SOIC package.
  • Supports Boost, Buck, and Flyback topologies.

UC3844DTR Applications

  • Optimized for off-line converters.
  • Suitable for DC-to-DC applications.
  • Used in power supply designs.
  • Enables efficient power conversion.

UC3844DTR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating temperature range for the UC3844DTR?

The operating temperature range is 0°C to 70°C.

What is the maximum operating frequency of the UC3844DTR?

The maximum operating frequency is 500kHz.

What is the maximum duty cycle for the UC3844DTR?

The maximum duty cycle is 48%.

What is the operating voltage range for the UC3844DTR?

The operating voltage range is 12V to 28V.

What package type is the UC3844DTR available in?

The UC3844DTR is available in a 14-SOIC package.

Does the UC3844DTR have undervoltage lockout?

Yes, the UC3844DTR features undervoltage lockout with hysteresis.

What topologies does the UC3844DTR support?

The UC3844DTR supports Boost, Buck, Buck-Boost, Flyback, and Forward topologies.

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