MAX1802EHJ+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-Efficiency Step-Up DC-DC Converter
• Package: 32-TQFP (Thin Quad Flat Pack)
• Essence: Voltage Regulator
• Packaging/Quantity: Tape & 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: 500mA
• Switching Frequency: 1.2MHz
• Efficiency: Up to 90%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1802EHJ+T has a total of 32 pins. The pin configuration is as follows:

1. VIN: Input Voltage
2. GND: Ground
3. SW: Switch Node
4. FB: Feedback Voltage
5. EN: Enable Control
6. VOUT: Output Voltage
7. PGND: Power Ground
8. LX: Inductor Connection
9. BST: Boost Capacitor Connection
10. SS/TRK: Soft-Start/Tracking Control
11. COMP: Compensation Node
12. AGND: Analog Ground
13. NC: No Connect
14. NC: No Connect
15. NC: No Connect
16. NC: No Connect
17. NC: No Connect
18. NC: No Connect
19. NC: No Connect
20. NC: No Connect
21. NC: No Connect
22. NC: No Connect
23. NC: No Connect
24. NC: No Connect
25. NC: No Connect
26. NC: No Connect
27. NC: No Connect
28. NC: No Connect
29. NC: No Connect
30. NC: No Connect
31. NC: No Connect
32. NC: No Connect

Functional Features

• High-efficiency step-up DC-DC converter
• Wide input voltage range for versatile applications
• Adjustable output voltage to meet specific requirements
• Low quiescent current for power-saving operation
• Overcurrent and overtemperature protection for enhanced reliability
• Soft-start and tracking control for smooth power-up sequences

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power consumption - Wide input voltage range allows for compatibility with various power sources - Compact package size enables space-saving designs - Overcurrent and overtemperature protection enhance system reliability

Disadvantages: - Limited maximum output current may restrict certain high-power applications - Higher cost compared to non-integrated solutions - Requires careful thermal management due to the small package size

Working Principles

The MAX1802EHJ+T 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 efficiently boost the input voltage. The integrated circuit incorporates a high-frequency oscillator, a power switch, and control circuitry to regulate the output voltage. By controlling the duty cycle of the power switch, the converter adjusts the energy transfer from the input to the output, ensuring a stable and regulated output voltage.

Detailed Application Field Plans

The MAX1802EHJ+T is commonly used in various battery-powered applications, such as portable devices, wireless communication systems, and handheld instruments. It is suitable for boosting the battery voltage to power components that require a higher voltage level. Additionally, it finds applications in automotive electronics, industrial equipment, and medical devices where efficient power management is crucial.

Detailed and Complete Alternative Models

1. MAX1771ESA+: Similar specifications and features, different package (8-SOIC)
2. MAX8569BETT+: Higher output current (1A), similar specifications and features, different package (6-TDFN)
3. MAX6190AESAT: Lower output current (300mA), similar specifications and features, different package (8-SOIC)
4. MAX1724EZK33+: Fixed output voltage (3.3V), similar specifications and features, different package (5-SOT23)

These alternative models provide options with varying output currents, fixed output voltages, and different package sizes to cater to specific application requirements.

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