LT8709EFE#PBF

Product Overview

Category

LT8709EFE#PBF belongs to the category of integrated circuits (ICs).

Use

The LT8709EFE#PBF is primarily used as a synchronous buck-boost DC/DC converter.

Characteristics

• Synchronous operation for high efficiency
• Wide input voltage range: 2.8V to 80V
• Output voltage range: 1.3V to 80V
• Maximum output current: 10A
• Adjustable and fixed frequency options
• Internal compensation
• Low quiescent current: 50µA
• Programmable soft-start
• Fault protection features

Package

The LT8709EFE#PBF comes in a 20-lead TSSOP package.

Essence

The essence of LT8709EFE#PBF lies in its ability to efficiently convert a wide range of input voltages into a regulated output voltage, making it suitable for various applications.

Packaging/Quantity

The LT8709EFE#PBF is typically available in tape and reel packaging with a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 2.8V to 80V
• Output Voltage Range: 1.3V to 80V
• Maximum Output Current: 10A
• Switching Frequency Range: 100kHz to 400kHz
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to 125°C
• Package Type: 20-Lead TSSOP

Detailed Pin Configuration

1. VIN: Input voltage pin
2. SW: Switching node connection
3. PGND: Power ground pin
4. FB: Feedback pin for regulating output voltage
5. SS/TR: Soft-start/Tracking pin
6. SYNC/MODE: Synchronization/Mode selection pin
7. VCC: Supply voltage for internal circuitry
8. GND: Ground pin
9. PGATE: Gate driver power supply pin
10. BOOT: Bootstrap capacitor connection
11. BST: Boost capacitor connection
12. LX: Inductor connection
13. SS/TR: Soft-start/Tracking pin (continued)
14. RT: External resistor for setting switching frequency
15. VFB: Feedback voltage reference output
16. AGND: Analog ground pin
17. COMP: Compensation pin for stability control
18. SS/TR: Soft-start/Tracking pin (continued)
19. SYNC/MODE: Synchronization/Mode selection pin (continued)
20. VCC: Supply voltage for internal circuitry (continued)

Functional Features

• Synchronous buck-boost operation for efficient power conversion
• Wide input voltage range allows flexibility in various applications
• Adjustable and fixed frequency options for design optimization
• Internal compensation simplifies external component requirements
• Programmable soft-start enables controlled startup of the converter
• Fault protection features ensure safe operation

Advantages and Disadvantages

Advantages

• High efficiency due to synchronous operation
• Wide input voltage range provides versatility
• Internal compensation reduces external component count
• Programmable soft-start enhances system control
• Fault protection features enhance reliability

Disadvantages

• Limited maximum output current of 10A
• Requires careful consideration of thermal management at high currents

Working Principles

The LT8709EFE#PBF operates as a synchronous buck-boost DC/DC converter. It utilizes a combination of high-side and low-side switches to regulate the output voltage. The converter can step up or step down the input voltage based on the required output voltage. By adjusting the duty cycle of the switches, the converter maintains a regulated output voltage. The synchronous operation ensures high efficiency by reducing power losses.

Detailed Application Field Plans

The LT8709EFE#PBF finds applications in various fields, including but not limited to: - Automotive electronics - Industrial automation - Telecommunications - Renewable energy systems - Battery-powered devices - Portable electronics

Detailed and Complete Alternative Models

1. LT8709EFE#TRPBF: Similar to LT8709EFE#PBF, but available in tape and reel packaging with a quantity of 1500 units per reel.
2. LT8709EFE#PBF-ND: Same as LT8709EFE#PBF, but available for purchase through specific distributors.

These alternative models offer similar functionality and characteristics, providing options for different packaging requirements or purchasing channels.

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