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UC3825DW The Texas Instruments UC3825DW is a high-speed PWM controller designed for switched-mode power supplies. It offers versatile control features and a robust output stage.
Mfr Part #:

UC3825DW

Available from 4 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3825DW is a high-speed PWM controller designed for switched-mode power supplies. It offers versatile control features and a robust output stage.
✓ Total Stock: 18,631 pcs
$ Price Range: $2.99

UC3825DW Available from 4 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
15,322 pcs
On Request
15322 pcs On Request 1 On Request On Request On Request On Request On Request
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
2,000 pcs
On Request
2000 pcs On Request 1 On Request On Request On Request On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
1,259 pcs
On Request
1259 pcs On Request 1 On Request On Request On Request On Request On Request
Risen Electronics ✓
Non-Authorised Inventory information
50 pcs
On Request
50 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
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.

UC3825DW Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Sync
Control Features
Duty Cycle (Max)
Frequency
Function
Halogen Free
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Current
Output Phases
Output Type
Power Dissipation
SVHC Present
Storage Temperature
Supplier Device Package
Supply Voltage
Synchronous Rectifier
Tape & Reel
Topology
Voltage
Voltage Supply
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UC3825DW Description

Short technical summary and product information.

The UC3825DW from Texas Instruments is a high-speed Pulse Width Modulation (PWM) controller IC optimized for high-frequency switched-mode power supply applications. It supports both voltage and current mode topologies and can operate at switching frequencies up to 1MHz, though the specified range for this part is 340kHz to 460kHz.

 

Key electrical characteristics include a wide supply voltage range of 8.4V to 30V, a maximum duty cycle of 85%, and high current dual totem pole outputs capable of 1.5A peak current. The controller features a wide bandwidth error amplifier, fully latched logic with double pulse suppression, pulse-by-pulse current limiting, and soft start functionality. It also includes under-voltage lockout with hysteresis and a low start-up current of 1.1mA.

 

This device is suitable for various power supply configurations including Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, and Push-Pull topologies. It is not a synchronous rectifier. The UC3825DW is available in a 16-SOIC package and is designed for surface mount applications, operating within a temperature range of 0°C to 70°C.

 

Note: This part is not recommended for new designs.

UC3825DW Quick Information

Product Type: PWM Controller
Series: UC3825
Canonical Name: UC3825DW High Speed PWM Controller
Subcategory: AC/DC Switching Regulators

UC3825DW Compliance

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

UC3825DW Estimated Pricing

Qty Low High
1+ $2.99 $2.99

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

UC3825DW Features

  • High-speed PWM controller for SMPS.
  • Supports multiple power supply topologies.
  • 1.5A peak output current capability.
  • Wide operating voltage range.
  • Surface mount 16-SOIC package.

UC3825DW Applications

  • Optimized for high-frequency power supplies.
  • Suitable for Buck and Boost converters.
  • Used in Flyback and Forward converters.
  • Applicable to Full and Half-Bridge designs.

UC3825DW FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the UC3825DW?

The UC3825DW operates from 8.4V to 30V.

What is the operating temperature range of the UC3825DW?

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

What package is the UC3825DW available in?

The UC3825DW is available in a 16-SOIC package.

What is the switching frequency of the UC3825DW?

The switching frequency range is 340kHz to 460kHz.

What is the peak output current of the UC3825DW?

The peak output current is 1.5A.

What topologies does the UC3825DW support?

It supports buck, boost, flyback, forward converter, full-bridge, half-bridge, and push-pull topologies.

What is the maximum duty cycle of the UC3825DW?

The maximum duty cycle is 85%.

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