LT3681EDE#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Low quiescent current - Small package size

Package: DFN-12

Essence: The LT3681EDE#TRPBF is a high-efficiency, wide input voltage range, adjustable output voltage integrated circuit. It is commonly used in power management applications.

Packaging/Quantity: The LT3681EDE#TRPBF is typically packaged in a DFN-12 package. The quantity per package may vary depending on the supplier.

Specifications

• Input Voltage Range: 3V to 36V
• Output Voltage Range: 0.6V to VIN
• Maximum Output Current: 2A
• Quiescent Current: 40µA
• Switching Frequency: Up to 2MHz
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT3681EDE#TRPBF has the following pin configuration:

```

---

| | | PIN NAME | |_______________|

1. VIN
2. GND
3. SW
4. FB
5. SS
6. SYNC
7. VOUT
8. COMP
9. PGND
   1. EN
   2. RT
   3. NC ```

Functional Features

1. High Efficiency: The LT3681EDE#TRPBF offers high efficiency, minimizing power losses and maximizing battery life.
2. Wide Input Voltage Range: It can accept input voltages ranging from 3V to 36V, making it suitable for a wide range of applications.
3. Adjustable Output Voltage: The output voltage can be adjusted from 0.6V to the input voltage, providing flexibility in power management.
4. Low Quiescent Current: With a quiescent current of only 40µA, the LT3681EDE#TRPBF minimizes standby power consumption.
5. Small Package Size: The DFN-12 package allows for compact and space-efficient designs.

Advantages

• High efficiency leads to reduced power losses.
• Wide input voltage range enables versatile application possibilities.
• Adjustable output voltage provides flexibility in power management.
• Low quiescent current minimizes standby power consumption.
• Small package size allows for compact designs.

Disadvantages

• Limited maximum output current of 2A may not be sufficient for high-power applications.
• Higher switching frequency may introduce additional noise in sensitive circuits.

Working Principles

The LT3681EDE#TRPBF is a step-down (buck) switching regulator. It converts a higher input voltage to a lower output voltage efficiently by controlling the duty cycle of an internal switch. The switching action allows for high conversion efficiency while minimizing power losses.

The device utilizes a feedback mechanism to regulate the output voltage. By comparing the output voltage with a reference voltage, the LT3681EDE#TRPBF adjusts the duty cycle to maintain a stable output voltage despite variations in input voltage and load conditions.

Detailed Application Field Plans

The LT3681EDE#TRPBF finds applications in various fields, including but not limited to: - Battery-powered devices - Industrial automation - Automotive electronics - Telecommunications equipment - Portable consumer electronics

Alternative Models

Here are some alternative models that offer similar functionality to the LT3681EDE#TRPBF: - LT3680EDE#TRPBF - LT3682EDE#TRPBF - LT3683EDE#TRPBF - LT3684EDE#TRPBF

These models can be considered as alternatives based on specific requirements and design constraints.

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