MAX8728ETJ+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Power Consumption
• Package: 32-Pin Thin QFN
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.6V to 3.3V
• Maximum Output Current: 1.5A
• Efficiency: Up to 95%
• Quiescent Current: 30µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX8728ETJ+T has a total of 32 pins. The pin configuration is as follows:

1. VIN: Input Voltage
2. GND: Ground
3. EN: Enable Pin
4. FB: Feedback Pin
5. VOUT: Output Voltage
6. PGND: Power Ground
7. AGND: Analog Ground
8. BST: Boost Capacitor Connection
9. LX: Inductor Connection
10. SS/TR: Soft-Start/Tracking Pin
11. COMP: Compensation Pin
12. OCSET: Overcurrent Protection Threshold Setting
13. SYNC: Synchronization Pin
14. CLKOUT: Clock Output
15. CLKIN: Clock Input
16. VCC: Supply Voltage for Internal Circuitry 17-32. NC: No Connect Pins

Functional Features

• High Efficiency: The MAX8728ETJ+T offers up to 95% efficiency, ensuring minimal power loss during voltage regulation.
• Low Power Consumption: With a quiescent current of only 30µA, the IC minimizes power consumption in standby or low-load conditions.
• Wide Input Voltage Range: The IC can accept input voltages ranging from 2.7V to 5.5V, making it suitable for various applications.
• Adjustable Output Voltage: The output voltage can be adjusted from 0.6V to 3.3V, providing flexibility for different power requirements.
• Overcurrent Protection: The OCSET pin allows users to set the overcurrent protection threshold, ensuring safe operation of the circuit.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power loss - Low quiescent current minimizes standby power consumption - Wide input voltage range enables versatile application possibilities - Adjustable output voltage provides flexibility - Overcurrent protection ensures circuit safety

Disadvantages: - Limited maximum output current (1.5A) - Requires external components for proper operation

Working Principles

The MAX8728ETJ+T is a voltage regulator that utilizes a boost converter topology. It takes an input voltage within the specified range and converts it to a regulated output voltage. The boost converter operates by storing energy in an inductor during the ON state and releasing it to the output during the OFF state. This process allows the IC to step up the input voltage to the desired level.

The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the internal switch to maintain a stable output. The compensation pin (COMP) is used to optimize the stability and response of the control loop. The soft-start/tracking pin (SS/TR) controls the startup behavior and allows for tracking of an external reference voltage.

Detailed Application Field Plans

The MAX8728ETJ+T is commonly used in various applications where efficient voltage regulation is required. Some potential application fields include:

1. Portable Electronic Devices: The IC can be used to regulate the voltage for battery-powered devices such as smartphones, tablets, and portable media players.
2. IoT Devices: It is suitable for powering Internet of Things (IoT) devices that require low power consumption and efficient voltage conversion.
3. Industrial Equipment: The IC can be utilized in industrial equipment where stable and efficient power management is crucial.
4. Automotive Electronics: It finds applications in automotive electronics, providing regulated power to various components such as infotainment systems and sensors.

Detailed and Complete Alternative Models

1. MAX8729ETJ+T: Similar to MAX8728ETJ+T, but with a higher maximum output current of 2A.
2. MAX8730ETJ+T: A voltage regulator with similar specifications, but featuring an adjustable output voltage range from 0.6V to 5.5V.
3. MAX8731ETJ+T: This model offers a higher maximum output current of 3A while maintaining the same input and output voltage ranges.

These alternative models provide options with varying specifications to suit different application requirements.

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