ISL6605CB-T

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Mode PWM Controller

Characteristics: - High efficiency - Wide input voltage range - Adjustable frequency - Overcurrent protection - Soft-start capability

Package: 8-Lead SOIC (Small Outline Integrated Circuit)

Essence: The ISL6605CB-T is a voltage mode PWM controller designed for power supply applications. It provides control and regulation of the output voltage by adjusting the duty cycle of the PWM signal.

Packaging/Quantity: The ISL6605CB-T is available in a 8-Lead SOIC package. It is typically sold in reels containing 2500 units.

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 0.8V to 6V
• Maximum Duty Cycle: 90%
• Operating Temperature Range: -40°C to +85°C
• Switching Frequency Range: 100kHz to 1MHz

Pin Configuration

The ISL6605CB-T has the following pin configuration:

1. COMP: Compensation pin for loop stability.
2. FB: Feedback pin for voltage regulation.
3. CS: Current sense pin for overcurrent protection.
4. GND: Ground reference pin.
5. VCC: Power supply pin.
6. RT/CT: Timing resistor/capacitor connection pin.
7. SS/TR: Soft-start/Shutdown control pin.
8. OUT: Output pin for driving external MOSFET.

Functional Features

• Voltage mode control for precise regulation.
• Adjustable switching frequency for optimization.
• Overcurrent protection to prevent damage to the circuit.
• Soft-start capability for smooth startup.
• Shutdown control for power saving.

Advantages

• High efficiency leading to reduced power consumption.
• Wide input voltage range for versatile applications.
• Adjustable frequency allows customization for specific requirements.
• Overcurrent protection enhances system reliability.
• Soft-start capability prevents inrush current during startup.

Disadvantages

• Limited maximum duty cycle may restrict certain applications.
• Operating temperature range may not be suitable for extreme environments.
• Requires external components for complete power supply implementation.

Working Principles

The ISL6605CB-T operates on the voltage mode control principle. It compares the feedback voltage with a reference voltage and adjusts the duty cycle of the PWM signal accordingly to regulate the output voltage. The switching frequency can be adjusted using an external timing resistor and capacitor. The controller also incorporates overcurrent protection, soft-start, and shutdown features to enhance its functionality.

Detailed Application Field Plans

The ISL6605CB-T is commonly used in various power supply applications, including but not limited to: - DC-DC converters - Voltage regulators - Power management systems - Industrial equipment - Telecommunications devices

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the ISL6605CB-T include: - LM2576-ADJ - LT1073-12 - MAX668

These models can be considered as alternatives based on their specifications, pin configuration, and functional features.

In conclusion, the ISL6605CB-T is a voltage mode PWM controller designed for power supply applications. It offers high efficiency, wide input voltage range, adjustable frequency, and various protection features. Its compact 8-Lead SOIC package makes it suitable for space-constrained designs. However, it has limitations such as a limited maximum duty cycle and operating temperature range. Overall, the ISL6605CB-T is a reliable choice for voltage regulation in diverse applications.