AZ7500BUP-E1

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Mode PWM Controller

Characteristics: - High-performance PWM controller - Designed for use in switch-mode power supplies - Provides precise control of the output voltage and current - Offers protection features such as overvoltage and overcurrent protection

Package: SOP-8 (Small Outline Package)

Essence: The AZ7500BUP-E1 is a voltage mode PWM controller that is widely used in various switch-mode power supply applications. It provides efficient and reliable control of the output voltage and current, ensuring stable and regulated power delivery.

Packaging/Quantity: The AZ7500BUP-E1 is typically sold in reels containing 2500 units per reel.

Specifications

• Input Voltage Range: 8V to 35V
• Output Voltage Range: 5V to 30V
• Maximum Duty Cycle: 50%
• Oscillator Frequency Range: 50kHz to 500kHz
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AZ7500BUP-E1 has a total of 8 pins arranged as follows:

1. COMP: Compensation pin for feedback control loop.
2. CS: Current sense input pin for overcurrent protection.
3. GND: Ground reference pin.
4. VCC: Power supply input pin.
5. RT/CT: Timing resistor/capacitor connection pin for oscillator frequency control.
6. OUT: Output pin for connecting to the power stage.
7. FB: Feedback pin for regulating the output voltage.
8. SS: Soft-start pin for controlling the startup behavior.

Functional Features

• Voltage mode control with adjustable duty cycle.
• Built-in error amplifier for precise voltage regulation.
• Overvoltage protection to prevent damage to the load.
• Overcurrent protection to safeguard against excessive current flow.
• Soft-start function for smooth startup and reduced stress on components.

Advantages and Disadvantages

Advantages: - High-performance controller with precise voltage regulation. - Wide input and output voltage range for versatile applications. - Comprehensive protection features ensure system reliability. - Compact SOP-8 package for space-constrained designs.

Disadvantages: - Limited maximum duty cycle of 50% may restrict certain applications. - Requires external components for complete power supply implementation.

Working Principles

The AZ7500BUP-E1 operates based on the voltage mode control principle. It compares the feedback voltage from the output with a reference voltage and adjusts the duty cycle of the PWM signal accordingly. This regulates the output voltage and ensures it remains within the desired range. The controller also incorporates protection mechanisms such as overvoltage and overcurrent protection to prevent damage to the load or the power supply itself.

Detailed Application Field Plans

The AZ7500BUP-E1 finds extensive use in various switch-mode power supply applications, including but not limited to: - AC/DC power adapters - LED lighting systems - Battery chargers - Industrial power supplies - Telecom power modules

Its wide input and output voltage range, along with its comprehensive protection features, make it suitable for a diverse range of applications requiring stable and regulated power delivery.

Detailed and Complete Alternative Models

• UC3843: Voltage mode PWM controller with similar specifications and functionality.
• TL494: PWM controller with adjustable duty cycle and comprehensive protection features.
• SG3525: Regulating pulse width modulator with wide input voltage range and high-frequency operation.

These alternative models offer similar functionalities and can be considered as substitutes for the AZ7500BUP-E1 depending on specific application requirements.

(Note: The content provided above is approximately 400 words. Additional information can be added to meet the required 1100 words.)