LT3667HUDD#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management IC

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

Package: 16-Lead QFN

Essence: The LT3667HUDD#TRPBF is a power management IC designed for various applications that require efficient power conversion and regulation.

Packaging/Quantity: The LT3667HUDD#TRPBF is available in a 16-Lead QFN package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.5V to 36V
• Output Voltage Range: 1.24V to 34V
• Maximum Output Current: 1.5A
• Quiescent Current: 20µA
• Switching Frequency: 1MHz
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT3667HUDD#TRPBF has the following pin configuration:

1. VIN: Input voltage pin
2. SW: Switching node connection
3. GND: Ground reference
4. FB: Feedback pin for output voltage regulation
5. VOUT: Output voltage pin
6. EN: Enable pin for turning the IC on/off
7. SS: Soft-start capacitor connection
8. PGND: Power ground reference
9. BST: Boost capacitor connection
10. LX: Inductor connection
11. AGND: Analog ground reference
12. SYNC: Synchronization input pin
13. RT: External resistor for setting switching frequency
14. VCC: Supply voltage pin
15. COMP: Compensation pin for loop stability
16. ADJ: Output voltage adjustment pin

Functional Features

• Wide input voltage range allows for versatile applications
• High efficiency conversion for power-sensitive devices
• Adjustable output voltage provides flexibility in system design
• Low quiescent current minimizes power consumption during standby or idle mode
• Integrated protection features such as overvoltage and overcurrent protection

Advantages

• High efficiency operation leads to reduced power dissipation and longer battery life
• Wide input voltage range enables compatibility with various power sources
• Adjustable output voltage allows for customization based on specific requirements
• Small package size saves board space and simplifies layout design
• Integrated protection features enhance system reliability and durability

Disadvantages

• Limited maximum output current may not be suitable for high-power applications
• Higher switching frequency may introduce additional noise in sensitive circuits

Working Principles

The LT3667HUDD#TRPBF is a step-down (buck) DC-DC converter. It utilizes a high-frequency switching technique to efficiently convert the input voltage to a lower regulated output voltage. The IC incorporates a control loop that adjusts the duty cycle of the internal switch to maintain the desired output voltage. Various protection mechanisms are integrated to safeguard the IC and the connected load from potential faults.

Detailed Application Field Plans

The LT3667HUDD#TRPBF can be applied in a wide range of electronic systems, including but not limited to: - Portable devices - Battery-powered equipment - Industrial automation - Automotive electronics - Telecommunications - LED lighting

Alternative Models

1. LT3652: Similar functionality with a different package and pin configuration.
2. LT8610: Step-down DC-DC converter with higher maximum output current.
3. LT1763: Low dropout linear regulator for applications requiring precise voltage regulation.

These alternative models offer similar or enhanced features compared to the LT3667HUDD#TRPBF and can be considered based on specific application requirements.

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