MAX6461UR29+T

Product Overview

• Category: Integrated Circuit
• Use: Voltage Regulator
• Characteristics: Low Dropout, Ultra-Low Quiescent Current
• Package: SOT-23
• Essence: Regulates voltage with minimal power consumption
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage: 2.9V
• Maximum Output Current: 100mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 1µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6461UR29+T has three pins:

1. VIN - Input voltage pin
2. GND - Ground pin
3. VOUT - Output voltage pin

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• Ultra-low quiescent current minimizes power consumption during standby or idle periods.
• Reverse current protection prevents damage to the regulator and connected components.
• Thermal shutdown protection safeguards against excessive temperature.

Advantages and Disadvantages

Advantages

• Low dropout voltage enables efficient voltage regulation.
• Ultra-low quiescent current prolongs battery life in portable applications.
• Reverse current protection prevents damage to the circuit.
• Thermal shutdown protection ensures safe operation.

Disadvantages

• Limited maximum output current of 100mA may not be suitable for high-power applications.
• Operating temperature range of -40°C to +85°C may restrict usage in extreme environments.

Working Principles

The MAX6461UR29+T is a voltage regulator that maintains a stable output voltage of 2.9V, regardless of variations in the input voltage. It achieves this by utilizing an internal pass transistor that adjusts its resistance to regulate the output voltage. The low dropout voltage allows for efficient regulation even when the input voltage is close to the desired output voltage.

The ultra-low quiescent current ensures minimal power consumption during standby or idle periods, making it ideal for battery-powered devices. The reverse current protection prevents any current flow from the output pin to the input pin, protecting the regulator and connected components. Additionally, the thermal shutdown feature safeguards against excessive temperature, preventing damage to the device.

Detailed Application Field Plans

The MAX6461UR29+T is commonly used in various applications, including:

1. Battery-powered devices: Portable electronics such as smartphones, tablets, and wearable devices benefit from the low dropout voltage and ultra-low quiescent current, extending battery life.
2. IoT (Internet of Things) devices: The regulator's small package size and low power consumption make it suitable for IoT applications where space and energy efficiency are crucial.
3. Automotive electronics: The wide operating temperature range allows for usage in automotive environments, making it suitable for powering sensors, control modules, and other electronic components.

Detailed and Complete Alternative Models

• MAX6461UR26+T: Output voltage of 2.6V, otherwise similar specifications.
• MAX6461UR33+T: Output voltage of 3.3V, otherwise similar specifications.
• MAX6461UR50+T: Output voltage of 5.0V, otherwise similar specifications.

These alternative models provide different output voltages while maintaining similar characteristics and features to the MAX6461UR29+T.

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