ADM802MARNZ

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Power Management IC
• Characteristics: Low dropout voltage regulator with adjustable output voltage
• Package: Small Outline Transistor (SOT-23) package
• Essence: Voltage regulator for various electronic devices
• Packaging/Quantity: Typically sold in reels of 3000 units

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV at 150mA load current
• Maximum Output Current: 150mA
• Quiescent Current: 75µA (typical)

Detailed Pin Configuration

The ADM802MARNZ has three pins: 1. VIN: Input voltage pin 2. VOUT: Output voltage pin 3. GND: Ground pin

Functional Features

• Low dropout voltage: Allows the regulator to operate even when the input voltage is close to the desired output voltage.
• Adjustable output voltage: Provides flexibility to set the desired output voltage within the specified range.
• Low quiescent current: Ensures minimal power consumption when the device is in standby or idle mode.
• Thermal shutdown protection: Prevents the IC from overheating by shutting down the regulator when the temperature exceeds a certain threshold.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows compatibility with various power sources. - Adjustable output voltage provides versatility for different applications. - Small package size enables space-saving designs. - Low quiescent current minimizes power consumption.

Disadvantages: - Limited maximum output current may not be suitable for high-power applications. - Dropout voltage may affect efficiency in low input voltage scenarios.

Working Principles

The ADM802MARNZ is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage from a resistive divider network. The pass transistor adjusts its resistance to maintain a stable output voltage, compensating for changes in input voltage and load conditions.

Detailed Application Field Plans

The ADM802MARNZ is commonly used in various electronic devices, including: - Battery-powered devices: Provides regulated power supply for portable electronics such as smartphones, tablets, and wearables. - IoT devices: Suitable for low-power Internet of Things (IoT) applications where energy efficiency is crucial. - Embedded systems: Used in microcontroller-based systems, providing reliable power for sensors, actuators, and other peripherals.

Detailed and Complete Alternative Models

1. LM1117: Low dropout voltage regulator with fixed output voltage options.
2. LT1763: High-performance, low dropout linear regulator with adjustable output voltage.
3. MCP1700: Low quiescent current LDO regulator with fixed output voltage options.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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