MAX8857AETL+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

Characteristics: - High efficiency - Low power consumption - Small form factor - Wide input voltage range

Package: TQFN-40

Essence: The MAX8857AETL+ is a power management integrated circuit designed for efficient power conversion and management in various electronic devices.

Packaging/Quantity: The MAX8857AETL+ is typically sold in reels of 2500 units.

Specifications

The MAX8857AETL+ has the following 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%
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX8857AETL+ features a TQFN-40 package with the following pin configuration:

1. VIN
2. EN
3. FB
4. AGND
5. SW
6. PGND
7. LX
8. LX
9. LX
10. LX
11. LX
12. LX
13. LX
14. LX
15. LX
16. LX
17. LX
18. LX
19. LX
20. LX
21. LX
22. LX
23. LX
24. LX
25. LX
26. LX
27. LX
28. LX
29. LX
30. LX
31. LX
32. LX
33. LX
34. LX
35. LX
36. LX
37. LX
38. LX
39. LX
40. LX

Functional Features

The MAX8857AETL+ offers the following functional features:

• High-efficiency step-down converter
• Adjustable output voltage
• Overcurrent and overtemperature protection
• Soft-start function for controlled power-up
• Low quiescent current in shutdown mode

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption - Wide input voltage range allows for versatile applications - Small form factor enables compact designs - Overcurrent and overtemperature protection ensures device safety

Disadvantages: - Limited maximum output current of 1.5A

Working Principles

The MAX8857AETL+ operates as a step-down (buck) converter, converting a higher input voltage to a lower output voltage with high efficiency. It utilizes pulse-width modulation (PWM) techniques to regulate the output voltage based on feedback from the FB pin. The integrated circuit also incorporates various protection mechanisms to safeguard against overcurrent and overtemperature conditions.

Detailed Application Field Plans

The MAX8857AETL+ is commonly used in the following application fields:

1. Mobile devices (smartphones, tablets)
2. Portable consumer electronics
3. Battery-powered devices
4. Industrial equipment
5. IoT devices

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MAX8857AETL+ include:

1. MAX8860EUA33+: Step-down converter with adjustable output voltage and 1A maximum output current.
2. MAX17503GTL+: High-efficiency synchronous step-down converter with 3A maximum output current.
3. MAX15062ATB+: Integrated power management IC with multiple outputs and 2.5A maximum output current.

These alternative models can be considered based on specific requirements and design constraints.

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