MAX1759EUB+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: The MAX1759EUB+ 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-cell NiMH/NiCd batteries.

Characteristics: - High efficiency: The MAX1759EUB+ offers up to 94% efficiency, ensuring optimal power conversion. - Low quiescent current: With a quiescent current of only 20µA, it minimizes power consumption during standby mode. - Adjustable output voltage: The output voltage can be adjusted from 2.5V to 5.5V, providing flexibility for various applications. - Overcurrent protection: The device incorporates overcurrent protection to safeguard against excessive current flow.

Package: The MAX1759EUB+ is available in a small 10-pin µMAX package, which allows for space-saving integration into compact designs.

Essence: This IC serves as a power management solution, efficiently converting input voltage to a regulated output voltage suitable for portable electronic devices.

Packaging/Quantity: The MAX1759EUB+ is typically sold in reels containing 250 units per reel.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 2.5V to 5.5V
• Maximum Output Current: 300mA
• Quiescent Current: 20µA
• Efficiency: Up to 94%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1759EUB+ features the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. LX: Inductor connection pin
4. FB: Feedback voltage pin
5. EN: Enable pin
6. SS/TR: Soft-start/Tracking pin
7. VOUT: Output voltage pin
8. SW: Switching node pin
9. PGND: Power ground pin
10. VCC: Supply voltage pin

Functional Features

• High Efficiency: The MAX1759EUB+ employs a high-efficiency step-up topology, ensuring minimal power loss during voltage conversion.
• Low Quiescent Current: With a low quiescent current of only 20µA, the device minimizes power consumption during standby or idle periods.
• Adjustable Output Voltage: The output voltage can be adjusted using external resistors, allowing for customization based on specific application requirements.
• Overcurrent Protection: The IC incorporates overcurrent protection, safeguarding against excessive current flow and protecting downstream components.

Advantages and Disadvantages

Advantages: - High efficiency results in optimal power conversion. - Low quiescent current minimizes power consumption during standby mode. - Adjustable output voltage provides flexibility for various applications. - Overcurrent protection ensures safe operation.

Disadvantages: - Limited maximum output current of 300mA may not be suitable for high-power applications. - Requires additional external components for proper operation.

Working Principles

The MAX1759EUB+ operates as a step-up DC-DC converter. It utilizes an inductor to store energy from the input voltage and then releases it to the output circuit at a higher voltage. This conversion process is controlled by an internal switch that regulates the energy transfer. By adjusting the duty cycle of the switch, the output voltage can be regulated within the desired range.

Detailed Application Field Plans

The MAX1759EUB+ finds applications in various portable electronic devices, including but not limited to: - Smartphones and tablets - Portable media players - GPS navigation systems - Wearable devices - Handheld gaming consoles

Detailed and Complete Alternative Models

1. MAX1759ETB+: Similar to MAX1759EUB+, but available in a 10-pin TDFN package.
2. MAX1759ESA+: Similar to MAX1759EUB+, but available in an 8-pin SOIC package.
3. MAX1759EUT+: Similar to MAX1759EUB+, but available in a 6-pin SOT23 package.

These alternative models offer similar functionality and characteristics, providing options for different package preferences or space constraints.

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