MAX1947ETA18+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Quiescent Current, Small Package Size
• Package: 8-Pin TDFN (Thin Dual Flat No-Lead) Package
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage: 1.8V
• Maximum Output Current: 500mA
• Dropout Voltage: 150mV at 100mA
• Quiescent Current: 40µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1947ETA18+T has the following pin configuration:

1. GND (Ground)
2. EN (Enable)
3. FB (Feedback)
4. VOUT (Output Voltage)
5. VIN (Input Voltage)
6. NC (No Connection)
7. NC (No Connection)
8. GND (Ground)

Functional Features

• High efficiency voltage regulation
• Low quiescent current consumption
• Fast transient response
• Overcurrent and thermal protection
• Enable pin for power management control

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power dissipation - Low quiescent current prolongs battery life - Small package size saves board space - Fast transient response ensures stable output voltage

Disadvantages: - Limited maximum output current of 500mA - Dropout voltage of 150mV may affect performance in low input voltage scenarios

Working Principles

The MAX1947ETA18+T is a voltage regulator IC that takes an input voltage within the range of 2.5V to 5.5V and provides a regulated output voltage of 1.8V. It achieves high efficiency by utilizing a synchronous buck converter architecture. The enable pin allows for power management control, enabling the device to be turned on or off as required. The IC also incorporates overcurrent and thermal protection mechanisms to ensure safe operation.

Detailed Application Field Plans

The MAX1947ETA18+T is commonly used in various battery-powered applications where efficient voltage regulation is crucial. Some typical application fields include:

1. Portable electronic devices: Smartphones, tablets, portable media players
2. Wearable devices: Smartwatches, fitness trackers
3. IoT (Internet of Things) devices: Sensors, wireless modules
4. Battery-powered medical devices: Blood glucose meters, insulin pumps
5. Industrial equipment: Handheld instruments, data loggers

Detailed and Complete Alternative Models

• MAX1947ETC18+T: Same specifications and features, different package (6-pin SOT23)
• MAX1947EUA18+T: Same specifications and features, different package (8-pin µMAX)
• MAX1947EPA18+T: Same specifications and features, different package (8-pin DIP)

Note: These alternative models offer flexibility in terms of package options while maintaining the same functionality and performance as the MAX1947ETA18+T.

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