LTC3647EFE

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Quiescent Current
• Package: 20-Lead TSSOP
• Essence: Voltage Regulator
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.25V to 5.5V
• Output Voltage Range: 0.6V to 3.3V
• Maximum Output Current: 4A
• Switching Frequency: 1MHz
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LTC3647EFE has a total of 20 pins. The pin configuration is as follows:

1. VIN: Input Voltage
2. GND: Ground
3. VOUT: Output Voltage
4. FB: Feedback Pin
5. SS/TR: Soft-Start/Tracking Pin
6. SYNC: Synchronization Pin
7. MODE: Mode Selection Pin
8. PGOOD: Power Good Indicator
9. EN: Enable Pin
10. VCC: Internal Regulator Output
11. AGND: Analog Ground
12. PGND: Power Ground
13. BST: Boost Pin
14. SW: Switch Node
15. SW: Switch Node
16. SW: Switch Node
17. SW: Switch Node
18. SW: Switch Node
19. SW: Switch Node
20. SW: Switch Node

Functional Features

• Wide input voltage range allows for versatile applications.
• High efficiency ensures minimal power loss.
• Low quiescent current enables energy-saving operation.
• Soft-start and tracking feature for smooth startup and output voltage tracking.
• Synchronization capability for noise reduction in multi-phase applications.
• Multiple operating modes for flexibility in different scenarios.
• Power good indicator provides system status information.
• Enable pin allows for easy on/off control.

Advantages and Disadvantages

Advantages: - Wide input voltage range accommodates various power sources. - High efficiency reduces energy consumption and heat dissipation. - Low quiescent current prolongs battery life. - Soft-start and tracking feature ensures stable output voltage during startup. - Synchronization capability minimizes noise interference. - Multiple operating modes offer versatility in different applications. - Power good indicator enhances system reliability. - Enable pin simplifies power control.

Disadvantages: - Limited maximum output current may not be suitable for high-power applications. - 20-Lead TSSOP package may require additional space on the PCB.

Working Principles

The LTC3647EFE is a voltage regulator IC that converts an input voltage within the range of 2.25V to 5.5V to a regulated output voltage between 0.6V and 3.3V. It achieves this through a combination of switching and control circuitry. The input voltage is first boosted to a higher level using an internal boost converter. Then, it is regulated to the desired output voltage using a buck converter. The switching frequency of 1MHz ensures efficient power conversion. The IC operates based on the control signals received from the feedback pin, soft-start/tracking pin, synchronization pin, and mode selection pin.

Detailed Application Field Plans

The LTC3647EFE is widely used in various applications that require efficient power management. Some of the common application fields include:

1. Portable Electronics: The IC can be utilized in smartphones, tablets, portable gaming devices, and other battery-powered gadgets to regulate the voltage and maximize battery life.

2. Industrial Automation: It can be employed in industrial control systems, motor drives, and robotics to provide stable and efficient power supply.

3. Automotive Electronics: The IC can be integrated into automotive systems such as infotainment systems, advanced driver-assistance systems (ADAS), and lighting control modules to ensure reliable power delivery.

4. IoT Devices: It is suitable for powering Internet of Things (IoT) devices like sensors, smart home devices, and wearable technology, where low quiescent current and high efficiency are crucial.

5. Medical Equipment: The IC can be used in medical devices such as patient monitors, infusion pumps, and diagnostic equipment to deliver regulated power with minimal energy loss.

Detailed and Complete Alternative Models

1. LT8610ABEFE: Similar voltage regulator IC with a higher maximum output current of 6A.
2. LTC3649EFE: Voltage regulator IC with a wider input voltage range of 2.7V to 60V.
3. LT1763CS8-3.3: Low dropout voltage regulator IC with an output voltage fixed at 3.3V.
4. LT3080EST#PBF: Adjustable linear regulator IC with a maximum output current of 1.1A.
5. LTC3780EUH#