LP3913SQ-AE/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High efficiency, compact size, low power consumption
• Package: QFN (Quad Flat No-Lead)
• Essence: Power management IC for various applications
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: Programmable from 0.6V to 3.3V
• Output Current: Up to 1A
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +85°C
• Package Dimensions: 4mm x 4mm

Pin Configuration

The LP3913SQ-AE/NOPB has a total of 20 pins. The pin configuration is as follows:

1. VBAT: Battery Input Voltage
2. VBUS: USB Input Voltage
3. EN: Enable Pin
4. PG: Power Good Indicator
5. VOUT1: Programmable Output Voltage 1
6. VOUT2: Programmable Output Voltage 2
7. VOUT3: Programmable Output Voltage 3
8. VOUT4: Programmable Output Voltage 4
9. GND: Ground
10. VREF: Reference Voltage
11. ISET: Current Limit Setting
12. BST: Boost Converter Control
13. SW1: Switch Node 1
14. SW2: Switch Node 2
15. SW3: Switch Node 3
16. SW4: Switch Node 4
17. FB1: Feedback Pin 1
18. FB2: Feedback Pin 2
19. FB3: Feedback Pin 3
20. FB4: Feedback Pin 4

Functional Features

• Integrated boost converter and four programmable buck converters
• Adaptive voltage scaling for efficient power management
• Overcurrent protection and thermal shutdown features
• Power good indicator for monitoring the output voltage status
• Programmable output voltage levels for flexibility in different applications

Advantages and Disadvantages

Advantages

• High efficiency, leading to longer battery life
• Compact size, suitable for space-constrained designs
• Wide input voltage range allows compatibility with various power sources
• Programmable output voltages provide versatility for different loads
• Comprehensive protection features ensure safe operation

Disadvantages

• Limited output current capacity (up to 1A)
• Requires external components for proper operation
• Not suitable for high-power applications

Working Principles

The LP3913SQ-AE/NOPB is a power management IC that integrates a boost converter and four buck converters. The boost converter steps up the input voltage to a higher level, while the buck converters step it down to multiple programmable output voltages. These output voltages can be adjusted according to the specific requirements of the application.

The IC utilizes adaptive voltage scaling to optimize power efficiency by dynamically adjusting the output voltage based on the load conditions. It also incorporates overcurrent protection and thermal shutdown mechanisms to safeguard against potential damage.

The LP3913SQ-AE/NOPB operates by receiving an input voltage from either a battery or a USB source. The enable pin controls the device's operation, and the power good indicator provides feedback on the output voltage status.

Detailed Application Field Plans

The LP3913SQ-AE/NOPB is widely used in various portable electronic devices, such as smartphones, tablets, portable media players, and handheld gaming consoles. It is also suitable for wearable devices, IoT (Internet of Things) applications, and other battery-powered systems.

The IC's compact size and high efficiency make it ideal for space-constrained designs where power management is crucial. Its programmable output voltages allow customization for different components within the system, ensuring optimal performance.

Detailed and Complete Alternative Models

• LP3914SQ-AE/NOPB: Similar to LP3913SQ-AE/NOPB but with additional features
• LP3912SQ-AE/NOPB: Similar to LP3913SQ-AE/NOPB but with fewer buck converters
• LP3915SQ-AE/NOPB: Similar to LP3913SQ-AE/NOPB but with higher output current capacity

These alternative models offer similar functionality with slight variations in terms of features and specifications. They can be considered as alternatives depending on specific application requirements.

In conclusion, the LP3913SQ-AE/NOPB is a versatile power management IC that provides efficient and flexible voltage regulation for various portable electronic devices. Its compact size, high efficiency, and programmable output voltages make it an excellent choice for power-sensitive applications.