MAX866ESA+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Quiescent Current, Small Package Size
• Package: SOIC-8
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Range: 1.2V to 3.3V
• Output Current: Up to 150mA
• Quiescent Current: 10µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX866ESA+T has a total of 8 pins arranged as follows:

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

1. Vout: Output Voltage
2. Vin: Input Voltage
3. GND: Ground
4. EN: Enable Pin
5. FB: Feedback Pin
6. NC: No Connection

Functional Features

• High efficiency voltage regulation
• Low quiescent current for power-saving applications
• Wide input voltage range for versatility
• Stable output voltage with minimal ripple
• Thermal shutdown protection
• Short-circuit and overcurrent protection

Advantages and Disadvantages

Advantages

• Compact package size allows for space-constrained designs
• Low quiescent current prolongs battery life in portable devices
• Wide input voltage range accommodates various power sources
• Excellent load and line regulation for stable performance
• Built-in protection features enhance reliability

Disadvantages

• Limited output current may not be suitable for high-power applications
• Requires external components for proper operation
• Higher cost compared to basic linear regulators

Working Principles

The MAX866ESA+T is a voltage regulator IC that converts an input voltage within the range of 2.5V to 5.5V into a stable output voltage between 1.2V and 3.3V. It achieves this by utilizing a feedback mechanism that adjusts the internal circuitry to maintain the desired output voltage despite changes in load or input voltage.

The device operates by comparing the output voltage with a reference voltage using the feedback pin (FB). If the output voltage deviates from the desired value, the internal circuitry adjusts the duty cycle of the switching element to regulate the output voltage back to the set point.

Detailed Application Field Plans

The MAX866ESA+T is commonly used in various battery-powered applications, such as:

1. Portable electronic devices: Smartphones, tablets, portable media players
2. Wearable devices: Fitness trackers, smartwatches
3. IoT devices: Wireless sensors, smart home devices
4. Medical devices: Blood glucose meters, wearable health monitors
5. Industrial equipment: Handheld instruments, data loggers

Its small package size, low quiescent current, and wide input voltage range make it suitable for power-sensitive and space-constrained designs.

Detailed and Complete Alternative Models

1. MAX865ESA+T: Similar specifications and features, but with a different pin configuration.
2. MAX867ESA+T: Higher output current capability (up to 300mA) while maintaining similar characteristics.
3. MAX868ESA+T: Lower quiescent current (5µA typical) for ultra-low power applications.

These alternative models provide options based on specific requirements and design constraints.

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