LTC3899HFE#PBF

Product Overview

Category

The LTC3899HFE#PBF belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This IC is commonly used in various electronic devices and systems to efficiently regulate and control power supply voltages.

Characteristics

• High efficiency: The LTC3899HFE#PBF offers high conversion efficiency, minimizing power losses during voltage regulation.
• Wide input voltage range: It can handle a wide range of input voltages, making it suitable for diverse applications.
• Precise output voltage control: The IC provides accurate and stable output voltage regulation, ensuring reliable performance of the powered device.
• Fast transient response: It exhibits excellent transient response characteristics, enabling quick adaptation to load changes.
• Low quiescent current: The LTC3899HFE#PBF has low standby power consumption, enhancing energy efficiency.

Package

This IC is available in a compact and industry-standard 20-pin TSSOP package, which facilitates easy integration into circuit designs.

Essence

The LTC3899HFE#PBF is an essential component in power management systems, enabling efficient voltage regulation and control.

Packaging/Quantity

The LTC3899HFE#PBF is typically packaged in reels, containing a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 4.5V to 60V
• Output Voltage Range: Adjustable from 0.8V to 55V
• Maximum Output Current: 2A
• Switching Frequency: Up to 1MHz
• Operating Temperature Range: -40°C to 125°C
• Control Interface: Analog, Digital

Detailed Pin Configuration

The LTC3899HFE#PBF features a 20-pin TSSOP package with the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground reference pin
3. VOUT: Output voltage pin
4. FB: Feedback pin for output voltage regulation
5. SS: Soft-start pin for controlling the startup behavior
6. SYNC: Synchronization input pin for external clock synchronization
7. CLKOUT: Clock output pin for synchronizing other devices
8. PGND: Power ground pin
9. SW: Switching node pin for connecting the inductor
10. BST: Boost pin for connecting an external capacitor
11. VCC: Supply voltage pin for internal control circuitry
12. EN: Enable pin for turning the IC on/off
13. MODE: Mode selection pin for choosing between PWM and Burst modes
14. RT/CLK: External resistor/clock frequency setting pin
15. PGOOD: Power good indicator pin
16. OVLO: Overvoltage lockout pin for protection against excessive voltages
17. OCSET: Overcurrent limit setting pin
18. SS/TRK: Soft-start/tracking pin for controlling the startup behavior
19. AGND: Analog ground pin
20. NC: No connection pin

Functional Features

The LTC3899HFE#PBF offers several functional features that enhance its performance and versatility:

• Wide input voltage range allows compatibility with various power sources.
• Adjustable output voltage enables customization to meet specific requirements.
• Integrated soft-start functionality ensures controlled startup and prevents voltage overshoot.
• Synchronization capability facilitates coordination with other devices in a system.
• Power good indicator provides a signal indicating proper operation and output voltage stability.
• Overvoltage lockout and overcurrent protection mechanisms safeguard the IC and connected components.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power losses and improved energy utilization.
• Wide input voltage range enhances compatibility with different power sources.
• Precise output voltage control ensures reliable performance of powered devices.
• Fast transient response enables quick adaptation to load changes.
• Compact package facilitates easy integration into circuit designs.

Disadvantages

• Limited maximum output current may restrict its use in high-power applications.
• Analog control interface may require additional external components for digital control.

Working Principles

The LTC3899HFE#PBF operates based on a switching regulator topology, utilizing pulse-width modulation (PWM) techniques. It regulates the output voltage by adjusting the duty cycle of the internal power switch. This control mechanism allows efficient conversion of input voltage to the desired output voltage while minimizing power losses.

Detailed Application Field Plans

The LTC3899HFE#PBF finds application in various fields, including but not limited to:

1. Industrial automation: Power supply regulation for control systems and motor drives.
2. Automotive electronics: Voltage regulation for automotive infotainment systems and advanced driver-assistance systems (ADAS).
3. Telecommunications: Power management for network equipment and communication devices.
4. Renewable energy: Voltage control in solar power systems and wind turbines.
5. Consumer electronics: Efficient power supply