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UC3845DTR The Texas Instruments UC3845DTR is a current mode PWM controller designed for off-line and DC-to-DC converters. It operates at frequencies up to 500kHz and is housed in a 14-SOIC package.
Mfr Part #:

UC3845DTR

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3845DTR is a current mode PWM controller designed for off-line and DC-to-DC converters. It operates at frequencies up to 500kHz and is housed in a 14-SOIC package.
✓ Total Stock: 60,267 pcs
$ Price Range: $0.52

UC3845DTR Available from 1 distributor

✓ 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
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.

UC3845DTR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Sync
Control Features
Duty Cycle (Max)
Frequency
Function
Lead Style
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Phases
Output Type
Supplier Device Package
Supplier Package
Synchronous Rectifier
Tape & Reel
Topology
Voltage
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UC3845DTR Description

Short technical summary and product information.

The UC3845DTR from Texas Instruments is a single-ended, current-mode PWM controller optimized for off-line and DC-to-DC converter applications. It features a wide operating voltage range of 12V to 28V and can operate at frequencies up to 500kHz.

 

This controller supports multiple topologies including Boost, Buck, Buck-Boost, Flyback, and Forward converters. It has a maximum duty cycle of 48% and offers features such as automatic feedforward compensation, pulse-by-pulse current limiting, and undervoltage lockout with hysteresis. The device is designed for surface mount installation and operates within a temperature range of 0°C to 70°C.

 

The UC3845DTR is housed in a 14-SOIC package, providing a compact solution for power management designs. Its output configuration is positive and isolation capable, with the output type specified as a transistor driver. This part is not recommended for new designs.

UC3845DTR Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC3845DTR Current Mode PWM Controller
Subcategory: Current Mode

UC3845DTR Compliance

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

UC3845DTR Estimated Pricing

Qty Low High
1+ $0.52 $0.52

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

UC3845DTR Features

  • Current mode PWM controller for converters.
  • Operates up to 500kHz frequency.
  • Supports multiple DC-DC topologies.
  • Surface mount 14-SOIC package.
  • Not recommended for new designs.

UC3845DTR Applications

  • Used in off-line converters.
  • Suitable for DC-to-DC applications.
  • Supports Boost converter designs.
  • Applicable to Buck converter circuits.
  • Flyback and Forward converter use.

UC3845DTR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the UC3845DTR?

The operating voltage range for the UC3845DTR is 12V to 28V.

What is the maximum operating frequency of the UC3845DTR?

The UC3845DTR can operate at frequencies up to 500kHz.

What is the maximum duty cycle for the UC3845DTR?

The maximum duty cycle for the UC3845DTR is 48%.

What is the operating temperature range of the UC3845DTR?

The UC3845DTR operates within a temperature range of 0°C to 70°C.

What package type is the UC3845DTR supplied in?

The UC3845DTR is supplied in a 14-SOIC package.

What type of mounting does the UC3845DTR require?

The UC3845DTR requires surface mount type.

Is the UC3845DTR recommended for new designs?

No, the UC3845DTR is not recommended for new designs.

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