LTC1821BIGW#PBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Power Consumption
• Package: 24-Lead Wide Body SOIC
• Essence: Voltage Regulator
• Packaging/Quantity: Tape & Reel, 250 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.6V to VIN
• Output Current: Up to 500mA
• Quiescent Current: 30µA
• Switching Frequency: 1.2MHz
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LTC1821BIGW#PBF has a total of 24 pins. The pin configuration is as follows:

1. VOUT
2. GND
3. FB
4. EN
5. SS
6. PGND
7. SW
8. SW
9. SW
10. SW
11. SW
12. SW
13. SW
14. SW
15. SW
16. SW
17. SW
18. SW
19. SW
20. SW
21. SW
22. SW
23. VIN
24. VCC

Functional Features

• High efficiency voltage regulation
• Low power consumption
• Wide input voltage range
• Adjustable output voltage
• Overcurrent protection
• Thermal shutdown protection

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption - Wide input voltage range allows for versatile applications - Adjustable output voltage provides flexibility - Overcurrent and thermal shutdown protection enhance reliability

Disadvantages: - Limited output current capacity (up to 500mA) - Higher cost compared to some alternative models

Working Principles

The LTC1821BIGW#PBF is a voltage regulator IC that efficiently converts an input voltage within the range of 2.7V to 5.5V to a regulated output voltage between 0.6V and VIN. It achieves high efficiency by utilizing a switching regulator topology with a fixed frequency of 1.2MHz.

The device incorporates various control features such as feedback control, enable/disable functionality, soft-start, and power good indication. These features ensure stable and reliable operation while protecting against overcurrent and thermal issues.

Detailed Application Field Plans

The LTC1821BIGW#PBF finds applications in various fields, including but not limited to:

1. Portable electronic devices
2. Battery-powered systems
3. IoT devices
4. Industrial automation
5. Automotive electronics
6. Medical equipment

Due to its wide input voltage range and adjustable output voltage, it can be used in diverse applications where efficient power management is crucial.

Detailed and Complete Alternative Models

1. LT1761ES5-3.3#TRMPBF: Low Dropout Regulator, SOT-23 package, 3.3V output voltage
2. LT3080EST#PBF: Adjustable Linear Regulator, TO-220 package, up to 1.1A output current
3. LT8610EMSE#PBF: Synchronous Buck Converter, MSOP-16 package, up to 2.5A output current
4. LT3970EMS-5#PBF: Step-Down DC/DC Converter, MSOP-10 package, 5V output voltage
5. LT3094EDD#PBF: Adjustable Linear Regulator, DFN-12 package, up to 500mA output current

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

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