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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching ControllersUC3525AQ
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UC3525AQ - Unitrode

Manufacturer Part Number
UC3525AQ
Manufacturer
Unitrode
Allelco Part Number
32D-UC3525AQ
ECAD Model
Parts Description
SWITCHING CONTROLLER, VOLTAGE-MO
Package
20-LCC (J-Lead)
Data sheet
UC3525AQ.pdf
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Specifications

UC3525AQ Tech Specifications
Unitrode - UC3525AQ technical specifications, attributes, parameters and parts with similar specifications to Unitrode - UC3525AQ

Product Attribute Attribute Value  
Manufacturer Unitrode  
Voltage - Supply (Vcc/Vdd) 8V ~ 35V  
Topology Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull  
Synchronous Rectifier Yes  
Supplier Device Package 20-PLCC (9x9)  
Series -  
Serial Interfaces -  
Package / Case 20-LCC (J-Lead)  
Package Bulk  
Output Type Transistor Driver  
Output Phases 1  
Product Attribute Attribute Value  
Output Configuration Positive  
Operating Temperature 0°C ~ 70°C (TA)  
Number of Outputs 2  
Mounting Type Surface Mount  
Function Step-Up, Step-Down, Step-Up/Step-Down  
Frequency - Switching 100Hz ~ 400kHz  
Duty Cycle (Max) 49%  
Control Features Enable, Frequency Control, Soft Start  
Clock Sync Yes  
Base Product Number UC3525  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

UC3525AQ

Manufacturer

Texas Instruments

Introduction

The UC3525AQ is an integrated Pulse Width Modulation (PWM) controller suitable for a range of power supply and DC-DC conversion applications.

Product Features and Performance

Integrated Transistor Driver

Supports Step-Up, Step-Down, and Step-Up/Step-Down topologies

Configurable for Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, and Push-Pull circuits

Dual Output capability

Single Output Phase

Supply Voltage range between 8V and 35V

Adjustable Switching Frequency from 100Hz to 400kHz

Max Duty Cycle of 49%

Synchronous Rectification for efficiency

Clock Synchronization feature

Product Advantages

Versatile for various circuit topologies

Synchronous Rectification enables high efficiency

Clock Synchronization for noise-sensitive applications

Soft Start feature to prevent inrush current at startup

Key Technical Parameters

Output Type: Transistor Driver

Topology: Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull

Number of Outputs: 2

Output Phases: 1

Voltage - Supply (Vcc/Vdd): 8V ~ 35V

Frequency - Switching: 100Hz ~ 400kHz

Duty Cycle (Max): 49%

Synchronous Rectifier: Yes

Clock Sync: Yes

Operating Temperature: 0°C ~ 70°C

Quality and Safety Features

Operates within industrial temperature range

Surface Mount package for robustness

Compatibility

Surface Mount technology compatible

20-LCC (J-Lead) package suitable for various PCB designs

Application Areas

Power Supplies

DC-DC Converters

Battery Management Systems

Motor Control

Industrial and Commercial Equipment

Product Lifecycle

Obsolete

Replacements or upgrades may be available

Several Key Reasons to Choose This Product

Able to adapt to various power conversion needs

High efficiency with PWM control and synchronous rectification

Flexibility of switching frequencies for various applications

Operational reliability within a wide temperature range

Manufactured by Texas Instruments, a leader in semiconductor solutions

Parts with Similar Specifications

The three parts on the right have similar specifications to Unitrode UC3525AQ

Product Attribute UC3525AQ UC3525BDWTR UC3525BN UC3525AN
Part Number UC3525AQ UC3525BDWTR UC3525BN UC3525AN
Manufacturer Unitrode Texas Instruments Texas Instruments Texas Instruments
Output Phases 1 1 1 1
Frequency - Switching 100Hz ~ 400kHz 100Hz ~ 400kHz 100Hz ~ 400kHz 100Hz ~ 400kHz
Package / Case 20-LCC (J-Lead) 16-SOIC (0.295", 7.50mm Width) 16-DIP (0.300', 7.62mm) 16-DIP (0.300', 7.62mm)
Number of Outputs 2 2 2 2
Supplier Device Package 20-PLCC (9x9) 16-SOIC 16-PDIP 16-PDIP
Output Type Transistor Driver Transistor Driver Transistor Driver Transistor Driver
Topology Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
Clock Sync Yes Yes Yes Yes
Operating Temperature 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) 0°C ~ 70°C (TA) 0°C ~ 70°C (TA)
Series - - - -
Duty Cycle (Max) 49% 49% 49% 49%
Output Configuration Positive Positive Positive Positive
Function Step-Up, Step-Down, Step-Up/Step-Down Step-Up, Step-Down, Step-Up/Step-Down Step-Up, Step-Down, Step-Up/Step-Down Step-Up, Step-Down, Step-Up/Step-Down
Voltage - Supply (Vcc/Vdd) 8V ~ 35V 8V ~ 35V 8V ~ 35V 8V ~ 35V
Base Product Number UC3525 UC3525 UC3525 UC3525
Package Bulk Tape & Reel (TR) Tube Tube
Control Features Enable, Frequency Control, Soft Start Dead Time Control, Frequency Control, Ramp, Soft Start Dead Time Control, Frequency Control, Ramp, Soft Start Enable, Frequency Control, Soft Start
Synchronous Rectifier Yes Yes Yes Yes
Mounting Type Surface Mount Surface Mount Through Hole Through Hole
Serial Interfaces - - - -

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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UC3525AQ Image

UC3525AQ

Unitrode
32D-UC3525AQ

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