MAX157AEUA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: The MAX157AEUA+ is a voltage regulator IC that provides a stable output voltage for various electronic devices.

Characteristics: - High precision voltage regulation - Low dropout voltage - Wide input voltage range - Current limiting and thermal shutdown protection - Small form factor

Package: The MAX157AEUA+ is available in a small 8-pin µMAX package, which is suitable for space-constrained applications.

Essence: This IC is designed to regulate the voltage supplied to electronic devices, ensuring a stable and reliable power source.

Packaging/Quantity: The MAX157AEUA+ is typically sold in reels or tubes containing a quantity of 250 units per package.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 1.25V to 15V
• Dropout Voltage: 200mV at 100mA load current
• Line Regulation: ±0.02% typical
• Load Regulation: ±0.05% typical
• Quiescent Current: 50µA typical
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX157AEUA+ features the following pin configuration:

```

---

| | --| Vout Vin|-- --| GND EN |-- --| FB NC |-- |___________| ```

• Vout: Output voltage pin
• Vin: Input voltage pin
• GND: Ground pin
• EN: Enable pin (active high)
• FB: Feedback pin
• NC: No connection (unused pin)

Functional Features

• High Precision Voltage Regulation: The MAX157AEUA+ ensures accurate and stable output voltage, making it suitable for sensitive electronic devices.
• Low Dropout Voltage: With a low dropout voltage of only 200mV, this IC can maintain regulation even when the input voltage is close to the desired output voltage.
• Wide Input Voltage Range: The IC can accept input voltages ranging from 2.5V to 16V, providing flexibility in various applications.
• Current Limiting and Thermal Shutdown Protection: The MAX157AEUA+ incorporates built-in protection mechanisms to prevent damage due to excessive current or temperature.
• Small Form Factor: The compact µMAX package allows for space-efficient integration into electronic circuits.

Advantages and Disadvantages

Advantages: - High precision voltage regulation ensures stable power supply to electronic devices. - Low dropout voltage enables efficient operation even with small input-output voltage differentials. - Wide input voltage range provides versatility in different applications. - Built-in protection features safeguard against current overload and excessive temperature. - Compact package size allows for easy integration into space-constrained designs.

Disadvantages: - Limited output current capacity may not be suitable for high-power applications. - The absence of adjustable output voltage limits customization options.

Working Principles

The MAX157AEUA+ operates as a linear voltage regulator. It compares the feedback voltage (FB) with a reference voltage to generate an error signal. This error signal controls the pass transistor, adjusting its resistance to maintain the desired output voltage. By continuously monitoring and adjusting the pass transistor, the IC ensures a stable output voltage despite variations in input voltage and load conditions.

Detailed Application Field Plans

The MAX157AEUA+ finds applications in various fields, including but not limited to: 1. Battery-powered devices: Provides regulated voltage for portable electronics, such as smartphones, tablets, and wearable devices. 2. Automotive electronics: Ensures stable power supply for automotive sensors, control modules, and infotainment systems. 3. Industrial automation: Used in control circuits, sensors, and actuators to maintain reliable voltage levels. 4. Communication systems: Provides regulated voltage for routers, switches, and other network equipment. 5. Medical devices: Ensures precise and stable power supply for medical instruments and diagnostic equipment.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with a wide input voltage range and adjustable output voltage.
2. LT1086: A low dropout (LDO) linear voltage regulator with high precision and current limiting features.
3. LM1117: A series of fixed-output LDO regulators available in various voltage options.
4. TPS7A47: An ultra-low noise, high PSRR linear voltage regulator suitable for audio applications.
5. ADP3339: A high-current, low dropout linear voltage regulator designed for demanding applications.

These alternative models offer similar functionality to the MAX157AEUA+ and can be considered based on specific requirements and design constraints.

In conclusion, the MAX157AEUA+ is a voltage regulator IC that provides stable and accurate voltage regulation for a wide