LTC3862EFE#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency synchronous step-down DC/DC controller - Wide input voltage range: 4.5V to 38V - Adjustable output voltage - Constant frequency current mode control - Programmable soft-start - Overvoltage and overcurrent protection - Thermal shutdown

Package: 24-Lead TSSOP

Essence: The LTC3862EFE#TRPBF is a high-performance synchronous step-down DC/DC controller designed for power management applications.

Packaging/Quantity: The LTC3862EFE#TRPBF is available in a 24-Lead Thin Shrink Small Outline Package (TSSOP). It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 38V
• Output Voltage Range: Adjustable
• Switching Frequency: Up to 1MHz
• Operating Temperature Range: -40°C to 125°C
• Efficiency: Up to 95%
• Maximum Duty Cycle: 100%

Detailed Pin Configuration

The LTC3862EFE#TRPBF has the following pin configuration:

1. VIN: Input voltage
2. PGND: Power ground
3. SS/TRK: Soft-start/tracking control
4. FB: Feedback voltage
5. COMP: Compensation node
6. VCC: Controller supply voltage
7. GATE: Gate driver output
8. SW: Switch node
9. BOOT: Bootstrap capacitor connection
10. SYNC/MODE: Synchronization/mode selection
11. RT: Oscillator resistor
12. CT: Oscillator capacitor
13. ITH: Current sense threshold
14. OCSET: Overcurrent protection threshold
15. SS/TRK: Soft-start/tracking control
16. PGND: Power ground
17. VCC: Controller supply voltage
18. GATE: Gate driver output
19. SW: Switch node
20. BOOT: Bootstrap capacitor connection
21. SYNC/MODE: Synchronization/mode selection
22. RT: Oscillator resistor
23. CT: Oscillator capacitor
24. ITH: Current sense threshold

Functional Features

• High efficiency power conversion
• Wide input voltage range for versatile applications
• Adjustable output voltage for flexibility
• Constant frequency current mode control for stable operation
• Programmable soft-start for controlled startup
• Overvoltage and overcurrent protection for system safety
• Thermal shutdown to prevent overheating

Advantages and Disadvantages

Advantages: - High efficiency operation saves energy - Wide input voltage range allows compatibility with various power sources - Adjustable output voltage provides flexibility in system design - Constant frequency current mode control ensures stable performance - Programmable soft-start prevents excessive inrush current - Overvoltage and overcurrent protection enhance system reliability - Thermal shutdown protects the IC from overheating

Disadvantages: - Limited maximum duty cycle may restrict certain applications - Requires external components for complete power management solution

Working Principles

The LTC3862EFE#TRPBF operates as a synchronous step-down DC/DC controller. It uses a constant frequency current mode control scheme to regulate the output voltage. The input voltage is stepped down to the desired output voltage by controlling the switching of the internal power MOSFETs. The controller continuously monitors the output voltage and adjusts the duty cycle of the switches to maintain a stable output.

Detailed Application Field Plans

The LTC3862EFE#TRPBF is suitable for a wide range of power management applications, including but not limited to: - Industrial equipment - Telecommunications systems - Automotive electronics - Power supplies - Battery-powered devices

Detailed and Complete Alternative Models

1. LTC3862EFE#PBF: Similar to LTC3862EFE#TRPBF, but available in a 24-Lead Plastic TSSOP package.
2. LTC3862IFE#TRPBF: Similar to LTC3862EFE#TRPBF, but with an extended temperature range (-40°C to 150°C).
3. LTC3862HFE#TRPBF: Similar to LTC3862EFE#TRPBF, but with higher switching frequency capability.

These alternative models offer similar functionality and can be considered as substitutes for the LTC3862EFE#TRPBF depending on specific requirements.

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