LT1308ACF#PBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Step-Up DC/DC Converter
• Package: 16-Lead Plastic SO Package
• Essence: Voltage Regulator
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 10V
• Output Voltage Range: Up to 28V
• Switching Frequency: 1.2MHz
• Maximum Output Current: 600mA
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT1308ACF#PBF has a 16-lead plastic SO package with the following pin configuration:

1. SW: Switch Node Connection
2. GND: Ground
3. FB: Feedback Pin
4. VCC: Supply Voltage Input
5. SHDN: Shutdown Pin
6. COMP: Compensation Pin
7. SS/TR: Soft-Start/Tracking Pin
8. NC: No Connection
9. NC: No Connection
10. NC: No Connection
11. NC: No Connection
12. NC: No Connection
13. NC: No Connection
14. NC: No Connection
15. VIN: Input Voltage
16. LX: Inductor Connection

Functional Features

• High efficiency step-up DC/DC converter
• Wide input voltage range for versatile applications
• Adjustable output voltage up to 28V
• Internal compensation for simplified design
• Soft-start and tracking capability
• Shutdown pin for power management control

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power consumption
• Wide input voltage range allows for flexibility in various applications
• Adjustable output voltage provides versatility
• Internal compensation simplifies design process
• Soft-start and tracking capability ensures smooth operation
• Shutdown pin enables power management control

Disadvantages

• Limited maximum output current of 600mA
• Requires careful consideration of thermal management due to operating temperature range

Working Principles

The LT1308ACF#PBF is a step-up DC/DC converter that efficiently boosts the input voltage to a higher output voltage. It utilizes a switching regulator topology to achieve high efficiency. The internal compensation circuitry simplifies the design process by eliminating the need for external components.

The device operates by controlling the switch node (SW) based on feedback received from the FB pin. This feedback loop regulates the output voltage, ensuring it remains within the desired range. The soft-start and tracking capability allow for controlled startup and synchronization with other power management circuits.

Detailed Application Field Plans

The LT1308ACF#PBF is commonly used in various applications where efficient voltage boosting is required. Some typical application fields include:

1. Battery-powered devices: The converter efficiently steps up the battery voltage to power components requiring higher voltages.
2. LED lighting: The device can be used to drive LEDs by boosting the input voltage to the required level.
3. Portable electronics: It finds application in portable devices such as smartphones, tablets, and portable audio players to provide regulated power supply.

Detailed and Complete Alternative Models

1. LT1308BCF#PBF: Similar to LT1308ACF#PBF but with extended operating temperature range (-40°C to 150°C).
2. LT1308DCF#PBF: Similar to LT1308ACF#PBF but with higher maximum output current of 800mA.
3. LT1308ECF#PBF: Similar to LT1308ACF#PBF but with lower switching frequency of 600kHz.

These alternative models offer variations in operating temperature range, maximum output current, and switching frequency to cater to specific application requirements.

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