LP3917RLX-N/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-performance power management IC with multiple functions
• Package: 32-pin WQFN package
• Essence: Efficiently manages power distribution and control in electronic devices
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on customer requirements

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: Programmable from 0.6V to 3.975V
• Number of Outputs: 8
• Maximum Output Current: 300mA
• Operating Temperature Range: -40°C to +85°C
• Efficiency: Up to 95%
• Switching Frequency: 2MHz
• Control Interface: I2C

Pin Configuration

The LP3917RLX-N/NOPB has a total of 32 pins. The pin configuration is as follows:

1. VDD
2. VDDA
3. VDDIO
4. GND
5. EN
6. SDA
7. SCL
8. INT
9. OUT1
10. OUT2
11. OUT3
12. OUT4
13. OUT5
14. OUT6
15. OUT7
16. OUT8
17. FB1
18. FB2
19. FB3
20. FB4
21. FB5
22. FB6
23. FB7
24. FB8
25. BST1
26. BST2
27. BST3
28. BST4
29. BST5
30. BST6
31. BST7
32. BST8

Functional Features

• Integrated power management solution for portable electronic devices
• Efficiently regulates and distributes power to various components
• Programmable output voltage levels for customization
• High efficiency and low quiescent current for improved battery life
• Overcurrent and overvoltage protection for enhanced safety
• I2C interface for easy control and monitoring

Advantages and Disadvantages

Advantages

• Compact size and high integration reduce PCB space requirements
• Wide input voltage range allows compatibility with various power sources
• Programmable output voltages offer flexibility for different applications
• Efficient power conversion minimizes energy loss and extends battery life
• Comprehensive protection features ensure device and user safety

Disadvantages

• Limited maximum output current may not be suitable for high-power applications
• Control interface limited to I2C, may not be compatible with all systems
• Higher cost compared to simpler power management solutions

Working Principles

The LP3917RLX-N/NOPB operates by efficiently converting the input voltage to multiple regulated output voltages. It utilizes a combination of step-down (buck) converters and low-dropout regulators (LDOs) to achieve this. The integrated control circuitry monitors the input and output voltages, adjusting the switching frequency and duty cycle to maintain the desired output levels. The I2C interface allows for easy configuration and monitoring of the device.

Detailed Application Field Plans

The LP3917RLX-N/NOPB is widely used in various portable electronic devices that require efficient power management. Some common application fields include:

1. Smartphones and Tablets: Regulating power distribution to the display, processor, memory, and other components.
2. Wearable Devices: Managing power supply to sensors, wireless modules, and display.
3. Portable Gaming Consoles: Controlling power delivery to the CPU, GPU, and display.
4. IoT Devices: Powering and managing various sensors, communication modules, and microcontrollers.
5. Portable Medical Devices: Regulating power supply to vital sign monitors, infusion pumps, and diagnostic devices.

Detailed and Complete Alternative Models

1. LP3919RLX-N/NOPB: Similar to LP3917RLX-N/NOPB but with additional features for audio applications.
2. LP3920RLX-N/NOPB: Power management IC with higher output current capability for more demanding applications.
3. LP3921RLX-N/NOPB: Integrated solution specifically designed for automotive applications, with extended temperature range and enhanced protection features.

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

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