LT8697HUDD#PBF

Product Overview

Category: Power Management ICs
Use: Voltage Regulator
Characteristics: High Efficiency, Synchronous Buck-Boost Converter
Package: 16-Lead (4mm × 4mm) QFN
Essence: Integrated Power Management Solution
Packaging/Quantity: Tube/100 pieces

Specifications

The LT8697HUDD#PBF is a high-performance synchronous buck-boost converter designed for power management applications. It operates over an input voltage range of 2.8V to 60V and provides an adjustable output voltage from 0.8V to 60V. The device offers a maximum output current of 5A and delivers high efficiency across a wide load range.

Detailed Pin Configuration

The LT8697HUDD#PBF features a 16-lead (4mm × 4mm) QFN package with the following pin configuration:

1. VIN: Input Voltage
2. SW: Switch Node Connection
3. GND: Ground
4. FB: Feedback Voltage Input
5. VOUT: Output Voltage
6. SS/TRK: Soft-Start/Tracking Control
7. SYNC/MODE: External Clock Synchronization/Input Voltage Mode Selection
8. PGND: Power Ground
9. BST: Boost Node Connection
10. EN/UVLO: Enable/Input Undervoltage Lockout
11. RT/CLKOUT: Oscillator Resistor/Timing Capacitor or Clock Output
12. CLKIN: Clock Input
13. SS/TRK: Soft-Start/Tracking Control
14. VCC: Supply Voltage
15. ITH: Current Sense Threshold
16. PGND: Power Ground

Functional Features

The LT8697HUDD#PBF offers several functional features that enhance its performance and usability. These include:

1. Wide Input Voltage Range: The device can operate from 2.8V to 60V, making it suitable for a wide range of applications.
2. High Efficiency: The synchronous buck-boost architecture ensures high efficiency across various load conditions.
3. Adjustable Output Voltage: The output voltage can be adjusted from 0.8V to 60V, providing flexibility in power management.
4. Integrated Protection Features: The LT8697HUDD#PBF incorporates various protection mechanisms such as overvoltage protection, overcurrent protection, and thermal shutdown.
5. Soft-Start/Tracking Control: The soft-start feature allows for controlled startup, reducing inrush current and improving system reliability.

Advantages and Disadvantages

Advantages: - Wide input voltage range enables versatile application possibilities. - High efficiency results in reduced power consumption and heat dissipation. - Adjustable output voltage provides flexibility in meeting specific requirements. - Integrated protection features enhance system reliability and durability. - Soft-start control minimizes inrush current, preventing damage to components.

Disadvantages: - Limited maximum output current of 5A may not be sufficient for certain high-power applications. - Complex pin configuration may require careful attention during circuit design and layout.

Working Principles

The LT8697HUDD#PBF operates on the principle of a synchronous buck-boost converter. It utilizes a combination of high-side and low-side MOSFETs to regulate the output voltage. By adjusting the duty cycle of the switching waveform, the device can step up or step down the input voltage to maintain a stable output voltage.

Detailed Application Field Plans

The LT8697HUDD#PBF is well-suited for a variety of power management applications, including but not limited to: - Industrial automation systems - Automotive electronics - Telecommunications equipment - Battery-powered devices - Distributed power systems

Detailed and Complete Alternative Models

1. LT8697S: Similar specifications but with a different package (20-Lead TSSOP)
2. LT8697H: Higher maximum output current (8A) with similar features
3. LT8697: Lower maximum output current (2.5A) with similar features

These alternative models offer different package options and varying output current capabilities, allowing users to choose the most suitable option for their specific requirements.

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