MAX1779EUE

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-efficiency, low-power, step-up DC-DC converter
• Package: 16-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Voltage regulator and power management solution
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Range: 3.3V to 5.5V
• Maximum Output Current: 100mA
• Switching Frequency: 1.2MHz
• Efficiency: Up to 90%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1779EUE has a total of 16 pins. The pin configuration is as follows:

1. EN (Enable)
2. FB (Feedback)
3. SW (Switch)
4. GND (Ground)
5. LX (Inductor Connection)
6. PGND (Power Ground)
7. VOUT (Output Voltage)
8. VCC (Input Voltage)
9. SS/TR (Soft-Start/Tracking)
10. COMP (Compensation)
11. NC (No Connect)
12. NC (No Connect)
13. NC (No Connect)
14. NC (No Connect)
15. NC (No Connect)
16. NC (No Connect)

Functional Features

• High efficiency step-up DC-DC conversion
• Low quiescent current for power-sensitive applications
• Soft-start and tracking capability for smooth startup
• Overcurrent and overtemperature protection
• Adjustable output voltage through external resistors
• Stable operation with ceramic capacitors

Advantages and Disadvantages

Advantages: - High efficiency results in longer battery life - Wide input voltage range allows for versatile applications - Small package size saves board space - Low quiescent current minimizes power consumption

Disadvantages: - Limited maximum output current may not be suitable for high-power applications - Non-isolated design may require additional circuitry for certain applications

Working Principles

The MAX1779EUE is a step-up DC-DC converter that converts a low input voltage to a higher output voltage. It utilizes a switching regulator topology to achieve high efficiency. The input voltage is boosted by the internal power MOSFET switch and regulated to the desired output voltage through feedback control. The soft-start feature ensures a gradual increase in output voltage during startup, preventing excessive inrush current.

Detailed Application Field Plans

The MAX1779EUE is commonly used in various battery-powered applications, such as portable devices, wireless communication systems, and handheld instruments. It is particularly suitable for applications requiring a higher output voltage than the available input voltage, while maintaining high efficiency and low power consumption.

Detailed and Complete Alternative Models

1. MAX1771EUE: Similar specifications and pin configuration, but with a lower maximum output current of 50mA.
2. MAX1775EUE: Higher maximum output current of 200mA, but with a slightly larger package size (20-pin TSSOP).
3. MAX1777EUE: Adjustable output voltage range from 2.5V to 16V, suitable for a wider range of applications.

These alternative models provide options based on specific requirements and trade-offs between output current, package size, and voltage range.

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