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LTC3621IDCB-3.3
Product Overview
Category
LTC3621IDCB-3.3 belongs to the category of integrated circuits (ICs) and specifically falls under the voltage regulators category.
Use
This product is primarily used for voltage regulation in various electronic devices and systems.
Characteristics
- Input Voltage Range: 2.7V to 5.5V
- Output Voltage: 3.3V
- Maximum Output Current: 1A
- Efficiency: Up to 95%
- Operating Temperature Range: -40°C to 125°C
- Package Type: DFN (Dual Flat No-Lead)
- Package Dimensions: 3mm x 3mm
- RoHS Compliant: Yes
Packaging/Quantity
The LTC3621IDCB-3.3 is typically available in tape and reel packaging, with a quantity of 2500 units per reel.
Specifications
- Input Voltage Range: 2.7V to 5.5V
- Output Voltage: 3.3V ±2%
- Maximum Output Current: 1A
- Dropout Voltage: 200mV at 500mA
- Quiescent Current: 20µA
- Ripple Rejection: 70dB at 1kHz
- Switching Frequency: 1MHz
- Shutdown Current: <1µA
- Soft-Start Time: 1ms
- Overtemperature Protection: Yes
- Short-Circuit Protection: Yes
Detailed Pin Configuration
The LTC3621IDCB-3.3 has the following pin configuration:
- VIN: Input Voltage
- GND: Ground
- SW: Switch Node
- FB: Feedback Voltage
- EN: Enable Pin
- VOUT: Output Voltage
Functional Features
- High Efficiency: The LTC3621IDCB-3.3 offers up to 95% efficiency, ensuring minimal power loss during voltage regulation.
- Wide Input Voltage Range: With an input voltage range of 2.7V to 5.5V, this product can be used in a variety of applications.
- Low Dropout Voltage: The dropout voltage of only 200mV at 500mA ensures efficient power conversion even with low input voltages.
- Overtemperature and Short-Circuit Protection: The LTC3621IDCB-3.3 incorporates built-in protection mechanisms to safeguard against overtemperature conditions and short-circuits.
Advantages and Disadvantages
Advantages
- High efficiency leads to reduced power consumption.
- Wide input voltage range allows for versatile application usage.
- Compact package size enables space-saving designs.
- Built-in protection features enhance reliability and durability.
Disadvantages
- Limited output current capacity may not be suitable for high-power applications.
- Higher cost compared to non-integrated voltage regulators.
Working Principles
The LTC3621IDCB-3.3 is a step-down (buck) voltage regulator that converts the input voltage to a regulated 3.3V output voltage. It utilizes a synchronous rectification architecture to achieve high efficiency. The internal control circuitry adjusts the duty cycle of the switching transistor to maintain the desired output voltage. Feedback voltage from the FB pin is compared to a reference voltage, and any deviation triggers the necessary adjustments.
Detailed Application Field Plans
The LTC3621IDCB-3.3 finds applications in various electronic devices and systems, including but not limited to: - Battery-powered portable devices - IoT (Internet of Things) devices - Wearable electronics - Embedded systems - Industrial automation - Automotive electronics
Detailed and Complete Alternative Models
Some alternative models that offer similar functionality to the LTC3621IDCB-3.3 include: - LM1117-3.3: A popular linear voltage regulator with a fixed 3.3V output. - TPS54332: A synchronous buck converter with adjustable output voltage and higher current capacity. - LT1763: A low dropout (LDO) voltage regulator with a fixed 3.3V output and ultra-low quiescent current.
These alternative models provide options for different design requirements and can be considered based on specific application needs.
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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de LTC3621IDCB-3.3 en soluciones técnicas
Sure! Here are 10 common questions and answers related to the application of LTC3621IDCB-3.3 in technical solutions:
Q1: What is LTC3621IDCB-3.3? A1: LTC3621IDCB-3.3 is a specific model of a low-noise, high-efficiency synchronous buck regulator IC.
Q2: What is the input voltage range for LTC3621IDCB-3.3? A2: The input voltage range for LTC3621IDCB-3.3 is typically between 2.7V and 5.5V.
Q3: What is the output voltage of LTC3621IDCB-3.3? A3: The output voltage of LTC3621IDCB-3.3 is fixed at 3.3V.
Q4: What is the maximum output current of LTC3621IDCB-3.3? A4: The maximum output current of LTC3621IDCB-3.3 is typically around 1.5A.
Q5: Can LTC3621IDCB-3.3 be used in battery-powered applications? A5: Yes, LTC3621IDCB-3.3 can be used in battery-powered applications as it has a wide input voltage range and low quiescent current.
Q6: Does LTC3621IDCB-3.3 have built-in protection features? A6: Yes, LTC3621IDCB-3.3 has built-in protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout.
Q7: Is LTC3621IDCB-3.3 suitable for noise-sensitive applications? A7: Yes, LTC3621IDCB-3.3 is designed to provide low-noise operation, making it suitable for noise-sensitive applications.
Q8: Can LTC3621IDCB-3.3 be used in automotive applications? A8: Yes, LTC3621IDCB-3.3 is qualified for automotive applications and meets the necessary standards.
Q9: What is the efficiency of LTC3621IDCB-3.3? A9: The efficiency of LTC3621IDCB-3.3 can reach up to 95% under typical operating conditions.
Q10: Are there any application notes or reference designs available for LTC3621IDCB-3.3? A10: Yes, Linear Technology (now part of Analog Devices) provides application notes and reference designs for LTC3621IDCB-3.3, which can be found on their website.
Please note that these answers are general and may vary depending on specific use cases and design considerations. It's always recommended to refer to the datasheet and relevant documentation for accurate information.