MAX1901EAI+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-Efficiency Step-Down DC-DC Converter
• Package: 28-Pin SSOP (Shrink Small Outline Package)
• Essence: Efficient power conversion for various applications
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.6V to VIN
• Maximum Output Current: 3A
• Switching Frequency: 1MHz
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1901EAI+T has a total of 28 pins. The pin configuration is as follows:

1. EN (Enable)
2. FB (Feedback)
3. COMP (Compensation)
4. VCC (Supply Voltage)
5. GND (Ground)
6. SW (Switch Node)
7. BOOT (Bootstrap)
8. LX (Inductor Connection)
9. PGND (Power Ground)
10. AGND (Analog Ground)
11. SS/TRK (Soft-Start/Tracking)
12. SYNC (Synchronization)
13. CLKOUT (Clock Output)
14. CLKIN (Clock Input)
15. VREF (Reference Voltage)
16. ISET (Current Limit Setting)
17. MODE (Mode Selection)
18. UVLO (Undervoltage Lockout)
19. OVLO (Overvoltage Lockout)
20. SS/TRK (Soft-Start/Tracking)
21. SYNC (Synchronization)
22. CLKOUT (Clock Output)
23. CLKIN (Clock Input)
24. VREF (Reference Voltage)
25. ISET (Current Limit Setting)
26. MODE (Mode Selection)
27. UVLO (Undervoltage Lockout)
28. OVLO (Overvoltage Lockout)

Functional Features

• High-efficiency step-down DC-DC converter
• Wide input voltage range for versatile applications
• Adjustable output voltage to meet specific requirements
• Fast transient response for stable power supply
• Overcurrent and overtemperature protection
• Soft-start and tracking functions for controlled startup

Advantages and Disadvantages

Advantages

• High efficiency results in reduced power consumption
• Compact package size saves board space
• Wide input voltage range allows flexibility in power source selection
• Comprehensive protection features ensure system reliability
• Soft-start and tracking functions enable smooth power-up sequence

Disadvantages

• Limited maximum output current of 3A may not be suitable for high-power applications
• Requires external components for operation, increasing overall system complexity

Working Principles

The MAX1901EAI+T is a high-efficiency step-down DC-DC converter that converts a higher input voltage to a lower output voltage. It utilizes a synchronous rectification architecture to minimize power losses and maximize efficiency. The IC incorporates a control loop that regulates the output voltage based on the feedback signal from the FB pin. The switching frequency can be set using an external clock or synchronized with an external signal.

During operation, the input voltage is stepped down by the internal power MOSFETs and filtered by the output capacitor. The control circuitry adjusts the duty cycle of the switches to maintain the desired output voltage. The device also includes various protection features such as undervoltage lockout (UVLO), overvoltage lockout (OVLO), and overcurrent protection.

Detailed Application Field Plans

The MAX1901EAI+T is widely used in various applications that require efficient power conversion. Some of the common application fields include:

1. Portable electronic devices: The IC can be used to power smartphones, tablets, portable media players, and other battery-operated devices.
2. Industrial equipment: It is suitable for powering sensors, actuators, control systems, and other components in industrial automation and control applications.
3. Automotive electronics: The converter can be utilized in automotive infotainment systems, navigation devices, lighting controls, and other automotive electronics.
4. IoT (Internet of Things) devices: It is ideal for low-power IoT devices such as smart home devices, wearables, and wireless sensor networks.
5. Embedded systems: The IC can be integrated into embedded systems, including single-board computers, development boards, and microcontroller-based systems.

Detailed and Complete Alternative Models

• MAX1900EAI+T
• MAX1902EAI+T
• MAX1903EAI+T
• MAX1904EAI+T
• MAX1905EAI+T
• MAX1906EAI+T
• MAX1907EAI+T
• MAX1908EAI