LT3667IUDD#PBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High efficiency, compact size, wide input voltage range
• Package: 16-Lead QFN
• Essence: Voltage Step-Down Converter
• Packaging/Quantity: Tape & Reel, 250 units per reel

Specifications

• Input Voltage Range: 2.5V to 36V
• Output Voltage Range: 0.8V to 34V
• Switching Frequency: 1MHz
• Maximum Output Current: 4A
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3667IUDD#PBF has a 16-lead QFN package with the following pin configuration:

1. VIN: Input Voltage
2. SW: Switch Node Connection
3. GND: Ground
4. FB: Feedback Pin
5. VOUT: Output Voltage
6. SS/TR: Soft-Start/Tracking Pin
7. SYNC: Synchronization Pin
8. PGND: Power Ground
9. EN: Enable Pin
10. BST: Boost Pin
11. VCC: Internal Regulator Output
12. AGND: Analog Ground
13. RT: Oscillator Timing Resistor
14. CT: Oscillator Timing Capacitor
15. COMP: Compensation Pin
16. PGOOD: Power Good Indicator

Functional Features

• Wide input voltage range allows for versatile applications
• High efficiency ensures minimal power loss
• Compact size enables space-saving designs
• Adjustable output voltage provides flexibility
• Soft-start and tracking features for controlled startup
• Synchronization capability for multi-phase operation
• Power good indicator for system monitoring

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Compact size allows for integration in small devices - Wide input voltage range accommodates various power sources - Adjustable output voltage suits different requirements - Soft-start and tracking features ensure smooth operation - Synchronization capability enables multi-phase configurations

Disadvantages: - Limited maximum output current (4A) - Requires external components for operation - Higher cost compared to non-integrated solutions

Working Principles

The LT3667IUDD#PBF is a voltage step-down converter that efficiently converts a higher input voltage to a lower output voltage. It utilizes a high-frequency switching regulator topology to achieve high efficiency. The integrated circuit incorporates a control loop that adjusts the duty cycle of the internal switch to regulate the output voltage. External components, such as inductors and capacitors, are required to complete the circuit and provide the necessary filtering and energy storage elements.

Detailed Application Field Plans

The LT3667IUDD#PBF is commonly used in various applications, including:

1. Portable electronic devices: Provides efficient power management for smartphones, tablets, and portable media players.
2. Industrial equipment: Enables reliable power supply for automation systems, motor drives, and control circuits.
3. Automotive electronics: Supports voltage regulation in automotive infotainment systems, lighting modules, and advanced driver assistance systems (ADAS).
4. Telecommunications: Facilitates power management in network routers, switches, and base stations.
5. Renewable energy systems: Optimizes power conversion in solar panels, wind turbines, and battery charging systems.

Detailed and Complete Alternative Models

1. LT3652IUDD#PBF: Similar voltage step-down converter with a lower maximum output current of 2A.
2. LT8610ABEUJ#PBF: Buck-boost converter with a wider input voltage range and higher maximum output current of 6A.
3. LT1763CS8-3.3#PBF: Low dropout voltage regulator with fixed output voltage of 3.3V and lower maximum output current of 1.5A.
4. LT3976EUFD#PBF: Synchronous buck-boost converter with a higher maximum output current of 5A and wider input voltage range.

These alternative models offer different specifications and features to suit specific application requirements.

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