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UC3844D The Texas Instruments UC3844D is a high-performance, fixed-frequency current-mode PWM controller designed for offline and DC-to-DC converter applications. It operates at frequencies up to 500kHz.
Mfr Part #:

UC3844D

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3844D is a high-performance, fixed-frequency current-mode PWM controller designed for offline and DC-to-DC converter applications. It operates at frequencies up to 500kHz.
✓ Total Stock: 36,577 pcs
$ Price Range: $0.78

UC3844D 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
36,160 pcs
On Request
36160 pcs On Request 1 On Request On Request On Request On Request On Request
Smaxon Electronics ✓
Non-Authorised Inventory information
417 pcs
On Request
417 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.

UC3844D 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 Current
Output Phases
Output Type
SVHC Present
Supplier Device Package
Supplier Package
Supply Voltage
Synchronous Rectifier
Topology
Voltage
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UC3844D Description

Short technical summary and product information.

The UC3844D from Texas Instruments is a versatile current-mode Pulse Width Modulation (PWM) controller. It is engineered for efficiency in both offline and DC-to-DC converter designs, requiring minimal external components. This controller features an internal oscillator, a temperature-compensated reference, a high-gain error amplifier, and a current sensing comparator.

 

Key electrical specifications include a supply voltage range of 12V to 28V and an operating frequency of up to 500kHz. The device supports various topologies such as Boost, Buck, Buck-Boost, Flyback, and Forward converters. It offers a maximum duty cycle of 48% and features like frequency control for precise operation.

 

The UC3844D is available in a 14-SOIC surface mount package, facilitating integration into compact designs. It operates within an ambient temperature range of 0°C to 70°C. Protective features include undervoltage lockouts with hysteresis and cycle-by-cycle current limiting.

UC3844D Quick Information

Product Type: DC DC Switching Controller
Series: UC3844
Canonical Name: UC3844D Current Mode PWM Controller
Subcategory: DC DC Switching Controllers

UC3844D Compliance

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

UC3844D Estimated Pricing

Qty Low High
1+ $0.78 $0.78

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

UC3844D Features

  • High-performance current-mode PWM controller.
  • Operates at frequencies up to 500kHz.
  • Supports multiple DC-DC converter topologies.
  • Available in a 14-SOIC package.
  • Wide supply voltage range of 12V to 28V.

UC3844D Applications

  • Ideal for offline converter designs.
  • Suitable for DC-to-DC converter applications.
  • Used in Boost and Buck converter circuits.
  • Applicable for Flyback and Forward converters.

UC3844D FAQs

4 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the UC3844D?

The UC3844D operates with a supply voltage range of 12V to 28V.

What package type is the UC3844D available in?

The UC3844D is available in a 14-SOIC package.

What is the operating temperature range for the UC3844D?

The operating temperature range for the UC3844D is 0°C to 70°C (TA).

What is the RoHS status of the UC3844D?

The UC3844D is RoHS3 Compliant.

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