ISL8844AMBZ-T

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection

Package: Surface Mount Device (SMD)

Essence: The ISL8844AMBZ-T is a voltage regulator IC designed for various applications requiring stable and adjustable output voltages.

Packaging/Quantity: The ISL8844AMBZ-T is available in a small package, typically supplied in reels or tubes. The exact quantity may vary depending on the supplier.

Specifications

The ISL8844AMBZ-T has the following specifications:

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 0.8V to 24V
• Output Current: Up to 4A
• Switching Frequency: 300kHz to 1MHz
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The ISL8844AMBZ-T has the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. FB: Feedback pin for output voltage regulation
4. COMP: Compensation pin for stability control
5. EN: Enable pin for turning the device on/off
6. SS/TR: Soft-start/Tracking pin for controlling start-up behavior
7. PGND: Power ground
8. VOUT: Output voltage

Functional Features

• High Efficiency: The ISL8844AMBZ-T offers high efficiency, minimizing power loss during voltage regulation.
• Wide Input Voltage Range: It can operate with input voltages ranging from 4.5V to 28V, making it suitable for a wide range of applications.
• Adjustable Output Voltage: The output voltage can be adjusted within a range of 0.8V to 24V, providing flexibility for different requirements.
• Overcurrent Protection: The IC includes overcurrent protection, safeguarding the circuit from excessive current flow.
• Thermal Shutdown Protection: It features thermal shutdown protection, preventing damage due to excessive heat.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption - Wide input voltage range allows for versatile applications - Adjustable output voltage provides flexibility - Overcurrent and thermal shutdown protection enhance reliability

Disadvantages: - Limited maximum output current (up to 4A) - Requires careful consideration of thermal management in high-power applications

Working Principles

The ISL8844AMBZ-T operates as a step-down voltage regulator using pulse-width modulation (PWM) control. It converts the higher input voltage to a lower, regulated output voltage by switching the internal power MOSFET on and off at a high frequency. The feedback mechanism adjusts the duty cycle of the switching signal to maintain the desired output voltage.

Detailed Application Field Plans

The ISL8844AMBZ-T is commonly used in various applications, including but not limited to: - Power supplies for industrial equipment - Automotive electronics - Telecommunications systems - Consumer electronics - LED lighting

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the ISL8844AMBZ-T include: - LM2596 - LT1073 - TPS54331 - MAX5035

These alternatives may have slightly different specifications or package options, so it is important to review their datasheets for specific details.

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