MAX1740EUB+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The MAX1740EUB+ is a high-efficiency, step-up DC-DC converter designed for portable devices and battery-powered applications. It provides a regulated output voltage from a single lithium-ion (Li+) cell or three NiMH cells.

Characteristics: - High efficiency conversion - Low quiescent current - Adjustable output voltage - Overcurrent and overtemperature protection - Small package size

Package: The MAX1740EUB+ is available in a 10-pin µMAX package, which is a small surface-mount package with dimensions of 3mm x 3mm.

Essence: The MAX1740EUB+ is an essential component for boosting the voltage from a single Li+ cell or three NiMH cells to power various electronic devices efficiently.

Packaging/Quantity: The MAX1740EUB+ is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 2.7V to 5.5V
• Maximum Output Current: 100mA
• Quiescent Current: 12µA (typical)
• Efficiency: Up to 90%
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX1740EUB+ features the following pin configuration:

1. VIN - Input Voltage
2. GND - Ground
3. FB - Feedback Voltage
4. EN - Enable Control
5. SW - Switch Node
6. LX - Inductor Connection
7. PGND - Power Ground
8. VOUT - Output Voltage
9. VCC - Supply Voltage
10. BST - Boost Node

Functional Features

• High-efficiency step-up voltage conversion
• Adjustable output voltage through feedback voltage control
• Enable pin for power management control
• Overcurrent protection to prevent damage to the device
• Overtemperature protection for safe operation

Advantages and Disadvantages

Advantages: - High efficiency conversion helps prolong battery life - Small package size allows for compact designs - Adjustable output voltage provides flexibility for different applications - Overcurrent and overtemperature protection enhance device reliability

Disadvantages: - Limited maximum output current of 100mA may not be suitable for high-power applications - Requires an external inductor for operation

Working Principles

The MAX1740EUB+ operates as a step-up DC-DC converter. It boosts the input voltage from a single Li+ cell or three NiMH cells to a regulated output voltage. The device utilizes a switching regulator topology to achieve high efficiency conversion. By controlling the duty cycle of the internal switch, it steps up the input voltage to the desired output voltage level.

Detailed Application Field Plans

The MAX1740EUB+ is commonly used in various portable and battery-powered applications, including but not limited to: - Mobile phones - Portable media players - Digital cameras - Handheld gaming devices - Wireless communication devices

Detailed and Complete Alternative Models

1. MAX1722EUB+: Similar to MAX1740EUB+, but with a higher maximum output current of 200mA.
2. MAX1771ESA+: Step-up DC-DC converter with integrated power switches and higher output current capability.
3. MAX6190AESA+: Low quiescent current, low dropout linear regulator suitable for low-power applications.

These alternative models offer different features and specifications to cater to specific requirements and design constraints.

In conclusion, the MAX1740EUB+ is a versatile step-up DC-DC converter that provides efficient voltage conversion for portable and battery-powered devices. Its small package size, adjustable output voltage, and built-in protection features make it an ideal choice for various applications in the electronics industry.

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