LTC3868IUH#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Synchronous Buck Controller
• Package: 32-Lead QFN (Quad Flat No-Lead)
• Essence: Regulates and controls power supply voltage efficiently
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 38V
• Output Voltage Range: 0.6V to 5.5V
• Switching Frequency: Up to 2MHz
• Maximum Duty Cycle: 95%
• Operating Temperature Range: -40°C to 125°C
• Features: Adjustable Soft-Start, Current Limit Protection, Overvoltage Protection, Undervoltage Lockout

Detailed Pin Configuration

1. VIN: Input Voltage
2. PGND: Power Ground
3. SS: Soft-Start Control
4. FB: Feedback Voltage
5. COMP: Compensation Node
6. VCC: Controller Supply Voltage
7. GATE: Gate Drive Output
8. BOOT: Bootstrap Capacitor Connection
9. SW: Switch Node
10. AGND: Analog Ground
11. SYNC: Synchronization Input
12. CLKOUT: Clock Output
13. PGOOD: Power Good Indicator
14. RT: Oscillator Timing Resistor
15. CT: Oscillator Timing Capacitor
16. BST: Boost Voltage Input
17. SS/TRK: Soft-Start/Tracking Control
18. OCSET: Current Limit Set
19. VREF: Reference Voltage Output
20. ITH: Current Sense Threshold

Functional Features

• High efficiency synchronous buck controller
• Wide input voltage range for versatile applications
• Adjustable soft-start for controlled power-up
• Current limit protection to prevent overload
• Overvoltage protection for safe operation
• Undervoltage lockout to ensure proper functioning

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption
• Wide input voltage range allows compatibility with various power sources
• Adjustable soft-start enables controlled startup and prevents voltage spikes
• Comprehensive protection features enhance reliability and safety
• Compact package size saves board space

Disadvantages

• Limited output voltage range may not suit all applications
• Higher switching frequency may introduce additional noise

Working Principles

The LTC3868IUH#TRPBF is a high-efficiency synchronous buck controller designed to regulate and control the power supply voltage efficiently. It operates by converting a higher input voltage to a lower output voltage using a synchronous rectifier topology. The controller adjusts the duty cycle of the switching transistor to maintain the desired output voltage.

The device incorporates various protection features such as current limit protection, overvoltage protection, and undervoltage lockout. These safeguards ensure the stability and reliability of the power supply system.

Detailed Application Field Plans

The LTC3868IUH#TRPBF is widely used in various applications that require efficient power management. Some of the common application fields include:

1. Industrial Automation: Powering control systems, motor drives, and PLCs.
2. Telecommunications: Providing stable power to network equipment, routers, and switches.
3. Automotive Electronics: Regulating voltage for infotainment systems, lighting, and sensors.
4. Consumer Electronics: Powering portable devices, audio/video equipment, and gaming consoles.
5. Renewable Energy: Managing power in solar inverters and wind turbines.

Detailed and Complete Alternative Models

1. LTC3867IUH#TRPBF: Similar specifications with additional fault protection features.
2. LTC3869IUH#TRPBF: Higher switching frequency and wider input voltage range.
3. LTC3866IUH#TRPBF: Lower output voltage range with improved efficiency.

These alternative models offer different features and specifications to cater to specific application requirements.

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