UC3526ADWTR

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UC3526ADWTR

IC REG CTRLR MULT TOP 18SOIC

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規格

Part Status Active
Output Type Transistor Driver
Function Step-Up, Step-Down, Step-Up/Step-Down
Output Configuration Positive
Topology Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
Number of Outputs 2
Output Phases 1
Voltage - Supply (Vcc/Vdd) 7V ~ 35V
Frequency - Switching 1Hz ~ 600kHz
Duty Cycle (Max) 49%
Synchronous Rectifier Yes
Clock Sync Yes
Control Features Enable, Frequency Control, Reset, Soft Start
Operating Temperature 0°C ~ 70°C (TA)
Mounting Type Surface Mount
Package / Case 18-SOIC (0.295", 7.50mm Width)
Supplier Device Package 18-SOIC
Base Product Number UC3526

概述

Description

The UC3526ADWTR is a high-performance PWM (Pulse Width Modulation) controller designed for power management applications, including switch-mode power supplies. It features a wide input voltage range, typically between 8V to 40V, and incorporates a variety of functionalities such as adjustable frequency, soft start, and fault protection mechanisms.
Key features include a dual output capability, allowing for both high-side and low-side drivers, and a built-in oscillator for precise frequency control. The UC3526ADWTR supports various topologies, including buck, boost, and flyback converters, making it versatile for different applications.
Its compact package design (usually in a 16-pin SOIC) facilitates integration into space-constrained environments, while its robust performance characteristics, such as high efficiency and thermal protection, make it suitable for industrial, automotive, and consumer electronics.
Overall, the UC3526ADWTR is an efficient solution for designers seeking reliable and adaptable PWM control in power conversion circuits.

Features

The UC3526ADWTR is a versatile PWM (Pulse Width Modulation) controller designed primarily for switch-mode power supplies and DC-DC converters. Key features include:
1. Voltage Regulation: It provides precise voltage regulation through PWM control.
2. Wide Input Voltage Range: Operates from 8V to 40V, making it suitable for various applications.
3. Oscillator: Features an adjustable oscillator frequency, allowing for flexibility in application design.
4. Duty Cycle Control: Offers a 0% to 100% duty cycle control, enhancing efficiency.
5. Integrated Functions: Includes a built-in error amplifier, soft-start capabilities, and over-voltage protection.
6. High Efficiency: Designed for high efficiency in power conversion applications.
7. Thermal Protection: Provides thermal shutdown to prevent overheating.
8. Package: Available in an 8-pin DIP or SOIC package for easy integration into designs.
These features make the UC3526ADWTR suitable for a range of applications in power management systems.

Package

The UC3526ADWTR is packaged in a 20-pin TSSOP (Thin Shrink Small Outline Package).

Pinout

The UC3526ADWTR is a voltage mode PWM (Pulse Width Modulation) controller with a total of 16 pins. Here are the key functions of its pins:
1. VCC (Pin 1): Supply voltage; typically ranges from 10V to 30V.
2. GND (Pin 8): Ground reference.
3. RT (Pin 2): Timing resistor; sets the oscillator frequency.
4. CT (Pin 3): Timing capacitor; works with RT to determine frequency.
5. DISCH (Pin 4): Discharge pin for timing capacitor.
6. PROG (Pin 5): Programming pin for voltage regulation.
7. COMP (Pin 6): Compensation pin for error amplifier.
8. INVERTING (Pin 7): Inverting input for the error amplifier.
9. NON-INVERTING (Pin 9): Non-inverting input for the error amplifier.
10. OUT (Pin 10): Output to drive the power transistor.
11. VREF (Pin 11): Reference voltage output (typically 5V).
12. SENSE (Pin 12): Current sensing input.
13. CS (Pin 13): Current sense comparator input.
14. SYNC (Pin 14): Synchronization input (optional).
15. VFB (Pin 15): Feedback voltage input.
16. SHDN (Pin 16): Shutdown control pin.
This controller is widely used in power supply applications due to its efficiency and versatility.

Manufacturer

The UC3526ADWTR is manufactured by Texas Instruments (TI), a prominent American technology company. Texas Instruments specializes in designing and manufacturing semiconductors and various integrated circuits (ICs) for a wide range of applications, including analog, digital signal processing, and embedded systems. Founded in 1930, the company is well-known for its innovation in electronics and plays a significant role in the development of new technologies for industries such as automotive, communications, industrial, and consumer electronics. TI's products are widely used in diverse fields, making it a key player in the semiconductor industry.

Application

The UC3526ADWTR is a versatile PWM (Pulse Width Modulation) controller primarily used in power supply applications, including DC-DC converters, switch-mode power supplies (SMPS), and motor control systems. Its features support applications requiring efficient power management, including voltage regulation, battery chargers, and renewable energy systems. The device enables precise control over output voltage and current, making it suitable for industrial, automotive, and consumer electronics applications.

Equivalent

The UC3526ADWTR is a pulse width modulation (PWM) controller. Equivalent products include the LM3526, TL494, SG3525, and UC3843. These chips offer similar functionalities for power supply applications, but it's essential to check the specific voltage ratings and features for compatibility in your design.

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