LTC3862HUH#PBF

Product Overview

• Category: Power Management IC
• Use: Voltage Regulator
• Characteristics: High Efficiency, Synchronous Buck Controller
• Package: 32-Lead QFN
• Essence: Advanced Power Management Solution
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 60V
• Output Voltage Range: 0.6V to 55V
• Switching Frequency: Up to 1MHz
• Maximum Duty Cycle: 90%
• Operating Temperature Range: -40°C to 125°C
• Quiescent Current: 50µA

Detailed Pin Configuration

The LTC3862HUH#PBF features a 32-lead QFN package with the following pin configuration:

1. VIN: Input voltage
2. PGND: Power ground
3. SS: Soft-start capacitor connection
4. FB: Feedback voltage input
5. COMP: Compensation node for loop stability
6. VCC: Supply voltage for internal circuitry
7. GATE: Gate drive output
8. SW: Switching node connection
9. SYNC: External synchronization input
10. RUN/SS/TRK: Run control, soft-start, and tracking control
11. RT/CLKOUT: Oscillator frequency setting and clock output
12. CLKIN: Clock input
13. PGOOD: Power good indicator
14. INTVCC: Internal supply voltage
15. AGND: Analog ground
16. NC: No connect
17. NC: No connect
18. NC: No connect
19. NC: No connect
20. NC: No connect
21. NC: No connect
22. NC: No connect
23. NC: No connect
24. NC: No connect
25. NC: No connect
26. NC: No connect
27. NC: No connect
28. NC: No connect
29. NC: No connect
30. NC: No connect
31. NC: No connect
32. NC: No connect

Functional Features

• High efficiency synchronous buck controller
• Wide input voltage range for versatile applications
• Adjustable output voltage with a wide range
• High switching frequency for compact designs
• Integrated power good indicator for system monitoring
• Internal compensation for simplified design
• External synchronization capability for noise-sensitive applications
• Soft-start and tracking control for controlled startup

Advantages and Disadvantages

Advantages

• High efficiency operation reduces power dissipation
• Wide input voltage range allows compatibility with various power sources
• Adjustable output voltage provides flexibility in system design
• Compact package size saves board space
• Integrated power good indicator enhances system reliability
• Simplified design with internal compensation

Disadvantages

• Limited maximum duty cycle may restrict certain applications
• Higher switching frequency may introduce additional noise

Working Principles

The LTC3862HUH#PBF is a high-efficiency synchronous buck controller designed to regulate the output voltage from an input voltage source. It utilizes a pulse-width modulation (PWM) control scheme to adjust the duty cycle of the switching transistor, thereby regulating the output voltage.

The controller operates by comparing the feedback voltage (FB) with a reference voltage to generate an error signal. This error signal is then processed by the internal control circuitry to adjust the duty cycle of the switching transistor. By continuously monitoring and adjusting the duty cycle, the controller maintains a stable output voltage despite variations in the input voltage or load conditions.

Detailed Application Field Plans

The LTC3862HUH#PBF is suitable for a wide range of applications, including:

1. Industrial power supplies
2. Telecom and networking equipment
3. Automotive electronics
4. Battery-powered systems
5. Distributed power systems
6. LED lighting

Detailed and Complete Alternative Models

• LTC3862HMP#PBF: 16-Lead QFN package, same specifications as LTC3862HUH#PBF
• LTC3862IUF#PBF: 38-Lead TSSOP package, same specifications as LTC3862HUH#PBF
• LTC3862EUH#PBF: 32-Lead QFN package, extended temperature range

These alternative models offer similar functionality and performance to the LTC3862HUH#PBF but may differ in package type or operating temperature range.

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