MAX8891EXK89+T

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Noise, Small Package Size
• Package: 8-Pin SC70
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 1.2V to 3.6V
• Maximum Output Current: 500mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 40µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

1. VIN: Input Voltage
2. GND: Ground
3. EN: Enable Pin
4. FB: Feedback Pin
5. VOUT: Output Voltage
6. SW: Switching Node
7. PG: Power Good Indicator
8. NC: No Connection

Functional Features

• High Efficiency: The MAX8891EXK89+T offers high efficiency power conversion, minimizing energy loss.
• Low Noise: It provides a clean and stable output voltage, reducing noise interference in sensitive applications.
• Fast Transient Response: The device quickly responds to load changes, ensuring a stable output voltage during dynamic conditions.
• Overcurrent Protection: The IC incorporates overcurrent protection, safeguarding the circuit from excessive current flow.
• Thermal Shutdown: In case of excessive temperature, the device automatically shuts down to prevent damage.

Advantages and Disadvantages

Advantages

• Compact Size: The small package size allows for space-saving designs in various applications.
• Wide Input Voltage Range: The IC can operate with input voltages ranging from 2.7V to 5.5V, providing flexibility in power supply options.
• Low Quiescent Current: The device consumes minimal current when in standby mode, conserving energy.
• Power Good Indicator: The PG pin provides a signal indicating the output voltage is within the desired range.

Disadvantages

• Limited Output Current: The maximum output current of 500mA may not be sufficient for high-power applications.
• Dropout Voltage: The dropout voltage of 120mV at 100mA may affect performance in low input voltage scenarios.

Working Principles

The MAX8891EXK89+T is a voltage regulator that converts an input voltage to a regulated output voltage. It utilizes a switching regulator topology to achieve high efficiency. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the internal switch to maintain a stable output. The enable pin (EN) controls the device's operation, allowing it to enter a low-power standby mode when disabled.

Detailed Application Field Plans

The MAX8891EXK89+T finds applications in various electronic devices, including: 1. Mobile Phones 2. Tablets 3. Portable Media Players 4. Wearable Devices 5. IoT Devices

Detailed and Complete Alternative Models

1. MAX8890EXK89+T
2. MAX8892EXK89+T
3. MAX8893EXK89+T
4. MAX8894EXK89+T
5. MAX8895EXK89+T

These alternative models offer similar functionality and characteristics, providing options for different design requirements.

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