MAX8709BETI+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Quiescent Current
• Package: 28-Pin Thin QFN
• Essence: Voltage Regulator and Battery Charger
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 0.8V to 5.5V
• Maximum Output Current: 3A
• Switching Frequency: 1MHz
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX8709BETI+T has a total of 28 pins. The pin configuration is as follows:

1. VIN: Input Voltage
2. GND: Ground
3. SW: Switching Node
4. BST: Boost Capacitor Connection
5. LX: Inductor Connection
6. FB: Feedback Voltage
7. EN: Enable Pin
8. SS/TRK: Soft-Start/Tracking
9. PGND: Power Ground
10. VCC: Supply Voltage for Internal Circuitry
11. AGND: Analog Ground
12. COMP: Compensation Pin
13. SS/TRK: Soft-Start/Tracking
14. SS/TRK: Soft-Start/Tracking
15. SS/TRK: Soft-Start/Tracking
16. SS/TRK: Soft-Start/Tracking
17. SS/TRK: Soft-Start/Tracking
18. SS/TRK: Soft-Start/Tracking
19. SS/TRK: Soft-Start/Tracking
20. SS/TRK: Soft-Start/Tracking
21. SS/TRK: Soft-Start/Tracking
22. SS/TRK: Soft-Start/Tracking
23. SS/TRK: Soft-Start/Tracking
24. SS/TRK: Soft-Start/Tracking
25. SS/TRK: Soft-Start/Tracking
26. SS/TRK: Soft-Start/Tracking
27. SS/TRK: Soft-Start/Tracking
28. SS/TRK: Soft-Start/Tracking

Functional Features

The MAX8709BETI+T is a highly efficient voltage regulator and battery charger IC. It offers the following functional features:

1. High Efficiency: The IC provides high efficiency power conversion, minimizing energy loss.
2. Low Quiescent Current: It has a low quiescent current, reducing power consumption during standby or idle mode.
3. Wide Input Voltage Range: The IC can accept input voltages ranging from 4.5V to 28V, making it suitable for various applications.
4. Adjustable Output Voltage: The output voltage can be adjusted from 0.8V to 5.5V, allowing flexibility in different system requirements.
5. Overcurrent Protection: The IC incorporates overcurrent protection to safeguard against excessive current flow.

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Low quiescent current - Wide input voltage range - Adjustable output voltage - Overcurrent protection

Disadvantages: - Limited maximum output current (3A)

Working Principles

The MAX8709BETI+T operates as a synchronous step-down voltage regulator and battery charger. It uses a high-frequency switching technique to efficiently convert the input voltage to the desired output voltage. The IC also includes charging circuitry to charge a connected battery.

During operation, the input voltage is regulated and stepped down to the desired output voltage using an internal control loop. The feedback voltage (FB) pin monitors the output voltage and adjusts the duty cycle of the internal switches to maintain a stable output.

The IC also includes protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout to ensure safe operation.

Detailed Application Field Plans

The MAX8709BETI+T is suitable for various applications, including but not limited to:

1. Portable Electronic Devices: It can be used in smartphones, tablets, portable gaming consoles, and other battery-powered devices.
2. Industrial Equipment: The IC can be employed in industrial control systems, automation equipment, and power supplies.
3. Automotive Electronics: It can be utilized in automotive infotainment systems, GPS devices, and other automotive electronics.
4. IoT Devices: The IC is suitable for Internet of Things (IoT) devices that require efficient power management and battery charging.

Detailed and Complete Alternative Models

1. MAX8709AETI+: Similar to MAX8709BETI+T, but with a different package (28-pin TQFN).
2. MAX8709BETI: Same as MAX8709BETI+T, but without the tape and reel packaging. 3