UC3825N The Texas Instruments UC3825N is a high-speed PWM controller designed for switched-mode power supply applications. It offers versatile control features and a robust output stage.
Mfr Part #:

UC3825N

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UC3825N is a high-speed PWM controller designed for switched-mode power supply applications. It offers versatile control features and a robust output stage.
Total Stock: 1,416 pcs
$ Price Range: $3.62

UC3825N Available from 2 distributors

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Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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1,124 pcs
1124 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
292 pcs
292 pcs On Request 1 On Request On Request 9927 On Request On Request

UC3825N 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
SVHC Present
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage

UC3825N Description

Short technical summary and product information.

The UC3825N from Texas Instruments is a high-speed PWM (Pulse Width Modulation) controller IC optimized for high-frequency switched-mode power supply applications. It supports various topologies including Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, and Push-Pull.

 

This controller operates with a supply voltage range of 8.4V to 30V and features a maximum duty cycle of 85%. It provides two outputs with a single phase and a transistor driver output type. Key electrical features include a practical operating switching frequency up to 1MHz, 50ns propagation delay to output, and high current dual totem pole outputs capable of 1.5A peak current. It also includes features like pulse-by-pulse current limiting, soft start, and under-voltage lockout with hysteresis.

 

The UC3825N is available in a 16-PDIP package and is designed for through-hole mounting. Its operating temperature range is from 0°C to 70°C. This controller is suitable for applications requiring efficient power conversion and precise control.

 

Note: This part is not recommended for new designs.

UC3825N Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UC3825N High Speed PWM Controller
Subcategory: DC-DC Switching Regulators

UC3825N Compliance

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

UC3825N Estimated Pricing

Qty Low High
1+ $3.62 $3.62

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

UC3825N Features

  • High-speed PWM controller for SMPS.
  • Supports multiple power supply topologies.
  • 1.5A peak current dual totem pole outputs.
  • Wide operating voltage from 8.4V to 30V.
  • 0°C to 70°C operating temperature range.

UC3825N Applications

  • Optimized for high-frequency power supplies.
  • Suitable for step-up/step-down converters.
  • Used in various switched-mode designs.
  • Provides precise output control.

UC3825N FAQs

7 frequently asked questions generated from this part’s specifications.
What is the supply voltage range of the UC3825N?

The UC3825N operates from 8.4V to 30V.

What is the operating temperature range?

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

What package is the UC3825N available in?

It is available in a 16-pin DIP (0.300", 7.62mm) package (16-PDIP).

What is the peak output drive current?

The peak output drive current is 1.5A.

What is the switching frequency range?

The typical switching frequency range is 340kHz to 460kHz, with a maximum of 1MHz.

What topologies does the UC3825N support?

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

Is the UC3825N recommended for new designs?

No, this part is not recommended for new designs.

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