MAX873ACSA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-efficiency, low-dropout voltage regulator
• Package: Surface Mount
• Essence: Voltage Regulator
• Packaging/Quantity: Tube/100 pieces

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 1.25V to 13.2V
• Output Current: 500mA
• Dropout Voltage: 120mV at 500mA
• Quiescent Current: 80µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX873ACSA has a total of 8 pins:

1. GND: Ground pin
2. IN: Input voltage pin
3. EN: Enable pin
4. FB: Feedback pin
5. VOUT: Output voltage pin
6. BYP: Bypass capacitor pin
7. SS/TR: Soft-start/Tracking pin
8. OUT: Output voltage pin

Functional Features

• High efficiency: The MAX873ACSA offers high efficiency in regulating the output voltage, resulting in minimal power loss.
• Low dropout voltage: With a dropout voltage as low as 120mV at 500mA, this IC ensures efficient power delivery even with low input voltages.
• Adjustable output voltage: The output voltage can be adjusted within a range of 1.25V to 13.2V, providing flexibility for various applications.
• Thermal shutdown protection: The IC includes thermal shutdown protection to prevent damage due to excessive heat.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption. - Low dropout voltage ensures efficient power delivery. - Adjustable output voltage allows for versatile applications. - Thermal shutdown protection prevents damage from overheating.

Disadvantages: - Limited output current of 500mA may not be suitable for high-power applications. - Requires external bypass capacitors for optimal performance.

Working Principles

The MAX873ACSA is a voltage regulator that maintains a stable output voltage regardless of input voltage fluctuations. It achieves this by comparing the feedback voltage (FB) with a reference voltage and adjusting the output accordingly. The enable pin (EN) controls the operation of the IC, allowing it to be turned on or off as needed.

Detailed Application Field Plans

The MAX873ACSA is commonly used in various electronic devices and systems, including:

1. Battery-powered devices: It efficiently regulates the voltage in portable devices such as smartphones, tablets, and digital cameras.
2. Automotive electronics: It ensures stable power supply in automotive applications, including infotainment systems, navigation units, and lighting systems.
3. Industrial equipment: It provides reliable voltage regulation in industrial control systems, motor drives, and instrumentation devices.
4. Communication systems: It is utilized in communication equipment like routers, switches, and base stations to maintain consistent power delivery.

Detailed and Complete Alternative Models

1. MAX874ACSA: Similar to MAX873ACSA but with higher output current capability (up to 1A).
2. MAX872ACSA: Lower dropout voltage (80mV at 500mA) compared to MAX873ACSA.
3. MAX875ACSA: Adjustable output voltage range from 0.8V to 5.5V, suitable for low-power applications.

These alternative models offer similar functionality with slight variations in specifications to cater to different requirements.

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