LT3694EUFD#PBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Wide Input Voltage Range, Small Package Size
• Package: 28-Lead QFN (Quad Flat No-Lead)
• Essence: Power management IC designed for various applications
• Packaging/Quantity: Tape & Reel, 250 units per reel

Specifications

• Input Voltage Range: 2.7V to 36V
• Output Voltage Range: 0.8V to 34V
• Switching Frequency: Up to 1MHz
• Maximum Output Current: 3A
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3694EUFD#PBF has a 28-lead QFN package with the following pin configuration:

1. VIN: Input voltage pin
2. SW: Switching node connection
3. GND: Ground reference
4. FB: Feedback pin for output voltage regulation
5. VCC: Supply voltage for internal circuitry
6. SS/TR: Soft-start and tracking control pin
7. SYNC/MODE: Synchronization and mode selection pin
8. PGND: Power ground reference
9. LX: Inductor connection
10. COMP: Compensation pin for loop stability
11. EN/UVLO: Enable and undervoltage lockout control pin
12. RT: External resistor for setting switching frequency
13. BST: Boost capacitor connection
14. VOUT: Output voltage pin

Functional Features

• Wide input voltage range allows operation from various power sources
• High efficiency ensures minimal power loss during conversion
• Adjustable output voltage provides flexibility for different applications
• Synchronization capability enables multiple ICs to work together
• Soft-start and tracking control for smooth startup and shutdown
• Undervoltage lockout protects the circuit during low input voltage conditions

Advantages and Disadvantages

Advantages

• High efficiency results in reduced power consumption
• Wide input voltage range allows compatibility with different power sources
• Small package size saves board space
• Adjustable output voltage provides versatility
• Synchronization capability enables parallel operation

Disadvantages

• Limited maximum output current of 3A
• Requires external components for proper operation
• Higher cost compared to some alternative models

Working Principles

The LT3694EUFD#PBF is a power management IC that utilizes a switching regulator topology. It converts an input voltage within the specified range into a regulated output voltage. The switching frequency can be adjusted using an external resistor, allowing optimization for different applications. The IC incorporates various protection features such as undervoltage lockout and overtemperature shutdown to ensure safe operation.

Detailed Application Field Plans

The LT3694EUFD#PBF can be used in a wide range of applications, including but not limited to:

1. Industrial automation systems
2. Telecommunications equipment
3. Automotive electronics
4. Portable devices
5. LED lighting systems
6. Battery-powered devices

Detailed and Complete Alternative Models

1. LT3694EFE#PBF: Similar specifications and pin configuration, different package (TSSOP)
2. LT3694HFE#PBF: Higher maximum output current (5A), similar specifications and pin configuration, different package (TSSOP)
3. LT3694MPFE#PBF: Military-grade version, similar specifications and pin configuration, different package (TSSOP)

These alternative models offer similar functionality and can be considered based on specific requirements and preferences.

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