LT8602ELXE#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency - Wide input voltage range - Low quiescent current - Adjustable output voltage - Synchronous rectification - Internal compensation - Programmable soft-start - Overcurrent protection - Thermal shutdown

Package: LQFN-20

Essence: The LT8602ELXE#PBF is a high-efficiency synchronous step-down DC/DC converter designed for power management applications.

Packaging/Quantity: The LT8602ELXE#PBF is available in a 20-pin LQFN package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 3V to 42V
• Output Voltage Range: 0.8V to VIN
• Maximum Output Current: 2A
• Switching Frequency: Up to 2.2MHz
• Quiescent Current: 2.5µA
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT8602ELXE#PBF has the following pin configuration:

1. VIN: Input voltage pin
2. SW: Switching node connection
3. GND: Ground reference
4. FB: Feedback voltage pin
5. SS/TRK: Soft-start/tracking control pin
6. SYNC/MODE: External synchronization or mode selection pin
7. VCC: Supply voltage for internal circuitry
8. PGND: Power ground connection
9. BST: Bootstrap capacitor connection
10. EN/UVLO: Enable/undervoltage lockout control pin
11. RT: Timing resistor connection
12. COMP: Compensation pin
13. SS/TRK: Soft-start/tracking control pin
14. SYNC/MODE: External synchronization or mode selection pin
15. VCC: Supply voltage for internal circuitry
16. PGND: Power ground connection
17. BST: Bootstrap capacitor connection
18. EN/UVLO: Enable/undervoltage lockout control pin
19. RT: Timing resistor connection
20. COMP: Compensation pin

Functional Features

• High efficiency synchronous step-down DC/DC converter
• Wide input voltage range allows operation from various power sources
• Low quiescent current minimizes power consumption in standby mode
• Adjustable output voltage provides flexibility in system design
• Synchronous rectification improves efficiency and reduces power loss
• Internal compensation simplifies external component count
• Programmable soft-start prevents excessive inrush current during startup
• Overcurrent protection safeguards the circuit from excessive load currents
• Thermal shutdown protects the IC from overheating

Advantages and Disadvantages

Advantages: - High efficiency operation - Wide input voltage range - Low quiescent current - Adjustable output voltage - Internal compensation simplifies design - Programmable soft-start feature - Overcurrent and thermal protection

Disadvantages: - Limited maximum output current (2A)

Working Principles

The LT8602ELXE#PBF operates as a synchronous step-down DC/DC converter. It uses a high-frequency switching technique to efficiently convert the input voltage to a lower output voltage. The internal control circuitry regulates the duty cycle of the switching transistor to maintain the desired output voltage. Synchronous rectification is employed to minimize power loss during the conversion process. The IC also incorporates various protection features such as overcurrent and thermal shutdown to ensure safe operation.

Detailed Application Field Plans

The LT8602ELXE#PBF is suitable for a wide range of power management applications, including but not limited to: - Industrial equipment - Automotive systems - Telecom infrastructure - Battery-powered devices - Distributed power supplies - Point-of-load converters

Detailed and Complete Alternative Models

1. LT8602ELXE#TRPBF: Same specifications and features as LT8602ELXE#PBF, but available in a 20-pin TSSOP package.
2. LT8602ELXE#MPBF: Same specifications and features as LT8602ELXE#PBF, but available in a 20-pin MSOP package.
3. LT8602ELXE#PBF-REEL7: Same specifications and features as LT8602ELXE#PBF, but sold in reels of 750 units.

These alternative models provide flexibility in choosing the most suitable package option for specific application requirements.

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