LTC3871ELXE#PBF
Product Overview
Category
The LTC3871ELXE#PBF belongs to the category of power management integrated circuits (PMICs).
Use
This PMIC is designed to provide efficient power management solutions for a wide range of applications.
Characteristics
- High efficiency: The LTC3871ELXE#PBF offers high conversion efficiency, minimizing power losses.
- Wide input voltage range: It can handle a broad input voltage range, making it suitable for various power sources.
- Multiple outputs: This PMIC provides multiple regulated output voltages, catering to different power requirements.
- Programmable features: It offers programmable features such as soft-start, current limit, and frequency synchronization.
Package
The LTC3871ELXE#PBF comes in a compact and thermally enhanced LQFN package, ensuring optimal thermal performance.
Essence
The essence of this PMIC lies in its ability to efficiently manage power conversion and regulation, enabling reliable operation of electronic devices.
Packaging/Quantity
The LTC3871ELXE#PBF is typically available in tape and reel packaging, with a quantity of 250 units per reel.
Specifications
- Input Voltage Range: 4.5V to 38V
- Output Voltage Range: Programmable from 0.6V to 5.5V
- Maximum Output Current: Up to 10A
- Switching Frequency: Adjustable from 200kHz to 2.2MHz
- Operating Temperature Range: -40°C to 125°C
Detailed Pin Configuration
The LTC3871ELXE#PBF has a total of 24 pins. Here is a detailed pin configuration:
- VIN: Input voltage pin
- PGND: Power ground pin
- SW1: Switching node 1
- SW2: Switching node 2
- SW3: Switching node 3
- SW4: Switching node 4
- VOUT1: Output voltage 1
- VOUT2: Output voltage 2
- VOUT3: Output voltage 3
- VOUT4: Output voltage 4
- FB1: Feedback pin 1
- FB2: Feedback pin 2
- FB3: Feedback pin 3
- FB4: Feedback pin 4
- SYNC/MODE: Synchronization or mode selection pin
- SS/TR/UVLO: Soft-start, tracking, and undervoltage lockout pin
- RT: External resistor for setting switching frequency
- ITH: Current limit threshold pin
- OCSET: Overcurrent protection threshold pin
- PGOOD: Power good indicator pin
- INTVCC: Internal voltage supply pin
- AGND: Analog ground pin
- VCC: Voltage supply pin
- BST: Bootstrap capacitor connection pin
Functional Features
- High efficiency synchronous buck regulator
- Wide input voltage range with excellent transient response
- Programmable soft-start and tracking functions
- Adjustable switching frequency for optimization
- Integrated overcurrent and overvoltage protection
- Power good indicator for monitoring output status
- Frequency synchronization capability for noise reduction
Advantages and Disadvantages
Advantages
- High conversion efficiency reduces power losses
- Wide input voltage range accommodates various power sources
- Multiple regulated outputs cater to different power requirements
- Programmable features offer flexibility in power management
- Compact package with excellent thermal performance
Disadvantages
- Limited maximum output current compared to some other PMICs
- Requires external components for operation
Working Principles
The LTC3871ELXE#PBF operates as a synchronous buck regulator, converting the input voltage to regulated output voltages. It utilizes high-frequency switching to minimize power losses and maximize efficiency. The programmable features allow customization of the power management parameters, such as soft-start time, current limit, and frequency synchronization. The integrated protection mechanisms safeguard against overcurrent and overvoltage conditions, ensuring safe operation.
Detailed Application Field Plans
The LTC3871ELXE#PBF finds applications in various fields, including but not limited to:
- Industrial automation: Powering control systems, motor drives, and sensors.
- Telecommunications: Providing power management solutions for base stations, routers, and network equipment.
- Automotive electronics: Regulating power for infotainment systems, advanced driver-assistance systems (ADAS), and lighting modules.
- Consumer electronics: Enabling efficient power conversion for smartphones, tablets, and portable devices.
- Renewable energy: Managing power in solar inverters, wind turbines, and energy storage systems.
Detailed and Complete Alternative Models
- LTC3870ELXE#PBF: Similar to LTC3871ELXE#PBF with
Lista 10 Vanliga frågor och svar relaterade till tillämpningen av LTC3871ELXE#PBF i tekniska lösningar
Sure! Here are 10 common questions and answers related to the application of LTC3871ELXE#PBF in technical solutions:
Q1: What is LTC3871ELXE#PBF? A1: LTC3871ELXE#PBF is a specific model number of a power management integrated circuit (PMIC) manufactured by Linear Technology (now part of Analog Devices). It is designed for high-efficiency synchronous buck-boost DC/DC conversion.
Q2: What is the input voltage range of LTC3871ELXE#PBF? A2: The input voltage range of LTC3871ELXE#PBF is typically between 2.25V and 38V.
Q3: What is the output voltage range of LTC3871ELXE#PBF? A3: The output voltage range of LTC3871ELXE#PBF can be adjusted from 0.8V to 60V.
Q4: What is the maximum output current of LTC3871ELXE#PBF? A4: The maximum output current of LTC3871ELXE#PBF depends on the specific application and external components used. It can support currents up to several amps.
Q5: What is the efficiency of LTC3871ELXE#PBF? A5: The efficiency of LTC3871ELXE#PBF can reach up to 95% or higher, depending on the operating conditions and load.
Q6: Can LTC3871ELXE#PBF operate in both buck and boost modes? A6: Yes, LTC3871ELXE#PBF is a versatile PMIC that can operate in both buck and boost modes, allowing it to step down or step up the input voltage as required.
Q7: Does LTC3871ELXE#PBF have built-in protection features? A7: Yes, LTC3871ELXE#PBF incorporates various protection features such as overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown to ensure safe operation.
Q8: What is the switching frequency of LTC3871ELXE#PBF? A8: The switching frequency of LTC3871ELXE#PBF can be programmed externally and typically ranges from a few hundred kilohertz to several megahertz.
Q9: Can LTC3871ELXE#PBF be used in automotive applications? A9: Yes, LTC3871ELXE#PBF is suitable for automotive applications as it meets the necessary requirements for temperature range, reliability, and EMI/EMC compliance.
Q10: Are there any evaluation boards or reference designs available for LTC3871ELXE#PBF? A10: Yes, Analog Devices provides evaluation boards and reference designs for LTC3871ELXE#PBF, which can help users quickly prototype and evaluate their power management solutions.
Please note that these answers are general and may vary depending on the specific application and design considerations. It is always recommended to refer to the datasheet and consult with the manufacturer or technical support for detailed information.