SG2526BDW

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Mode PWM Controller
• Characteristics: High-performance, versatile, and reliable
• Package: SOIC-16 (Small Outline Integrated Circuit), Dual in-line package (DIP)
• Essence: Regulates and controls the pulse width modulation (PWM) signal for voltage regulation applications
• Packaging/Quantity: Available in reels or tubes, with 250 units per reel/tube

Specifications

• Input Voltage Range: 8V to 35V
• Output Voltage Range: 5V to 30V
• Operating Temperature Range: -40°C to +85°C
• Switching Frequency: Adjustable up to 500kHz
• Maximum Duty Cycle: 100%
• Output Current: Up to 1A

Detailed Pin Configuration

The SG2526BDW has a total of 16 pins. The pin configuration is as follows:

1. COMP
2. RT/CT
3. VREF
4. GND
5. OSC
6. SYNC
7. DISCH
8. VCC
9. OUT
10. FB
11. INV
12. CS
13. SS/TR
14. RAMP
15. CT/RT
16. REF

Functional Features

• Voltage Mode Control: Provides precise voltage regulation by adjusting the duty cycle of the PWM signal.
• Adjustable Oscillator Frequency: Allows customization of the switching frequency according to the application requirements.
• Synchronization Input: Enables synchronization with an external clock source for multi-phase operation.
• Current Limiting: Incorporates current sensing and limiting features to protect the circuit from overcurrent conditions.
• Soft Start/Shutdown: Implements a soft start and shutdown function to prevent voltage spikes during power-up and power-down.

Advantages and Disadvantages

Advantages: - High-performance voltage regulation - Versatile and adaptable to various applications - Robust and reliable operation - Adjustable switching frequency - Current limiting for protection against overcurrent conditions

Disadvantages: - Limited output current capacity (up to 1A) - Requires external components for complete functionality - Not suitable for high-power applications

Working Principles

The SG2526BDW operates based on the voltage mode control technique. It compares a reference voltage with a feedback signal from the output, adjusting the duty cycle of the PWM signal accordingly. This regulates the output voltage by controlling the ON and OFF time of the power switch. The adjustable oscillator frequency allows customization of the switching speed, while the current limiting feature protects the circuit from excessive current flow.

Detailed Application Field Plans

The SG2526BDW finds application in various voltage regulation scenarios, including but not limited to: - Switching Power Supplies - DC-DC Converters - Battery Chargers - LED Drivers - Motor Control Circuits

Detailed and Complete Alternative Models

• SG3526N: Similar voltage mode PWM controller with extended temperature range (-40°C to +125°C).
• UC3842AN: Integrated circuit with similar functionality but higher output current capability (up to 2A).
• TL494CN: PWM controller with additional features like dead-time control and error amplifier.

Note: These alternative models may have different pin configurations and package types. Please refer to their respective datasheets for detailed information.

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