LP3958TL/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Dropout Voltage, Adjustable Output Voltage
• Package: Thin Shrink Small Outline Package (TSSOP)
• Essence: Regulator IC with Multiple Output Channels
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 6V
• Output Voltage Range: 0.8V to 3.6V
• Number of Output Channels: 3
• Maximum Output Current: 150mA per channel
• Dropout Voltage: 200mV at 100mA load current
• Quiescent Current: 60µA per channel
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LP3958TL/NOPB has a total of 20 pins. The pin configuration is as follows:

1. EN1: Enable Input for Channel 1
2. FB1: Feedback Input for Channel 1
3. VOUT1: Output Voltage for Channel 1
4. GND: Ground
5. VCC: Supply Voltage Input
6. VOUT2: Output Voltage for Channel 2
7. FB2: Feedback Input for Channel 2
8. EN2: Enable Input for Channel 2
9. VOUT3: Output Voltage for Channel 3
10. FB3: Feedback Input for Channel 3
11. EN3: Enable Input for Channel 3
12. PGND: Power Ground
13. SW1: Switching Node for Channel 1
14. SW2: Switching Node for Channel 2
15. SW3: Switching Node for Channel 3
16. BST: Boost Capacitor Connection
17. VREF: Reference Voltage Output
18. SS/TR: Soft-Start/Tracking Input
19. PGND: Power Ground
20. VIN: Input Voltage

Functional Features

• Multiple Output Channels: The LP3958TL/NOPB provides three independent output channels, allowing for simultaneous regulation of different voltages.
• High Efficiency: With its low dropout voltage and efficient design, the LP3958TL/NOPB achieves high power conversion efficiency.
• Adjustable Output Voltage: The output voltage of each channel can be adjusted within a specified range, providing flexibility in various applications.
• Enable Inputs: Each channel has an enable input pin, allowing individual control of the output channels.

Advantages and Disadvantages

Advantages: - Multiple output channels provide versatility in power management applications. - High efficiency results in reduced power dissipation and longer battery life. - Adjustable output voltage allows customization according to specific requirements.

Disadvantages: - Limited maximum output current per channel may not be suitable for high-power applications. - The TSSOP package may require careful handling during assembly.

Working Principles

The LP3958TL/NOPB is a regulator IC that utilizes a combination of switching and linear regulation techniques. It incorporates a boost converter to step up the input voltage, followed by linear regulators to provide stable output voltages. The enable inputs allow selective activation of the output channels, reducing power consumption when certain channels are not required.

Detailed Application Field Plans

The LP3958TL/NOPB is commonly used in various portable electronic devices, such as smartphones, tablets, and wearable devices. Its multiple output channels make it suitable for powering different components within these devices, such as microcontrollers, sensors, and display modules. The adjustable output voltage feature enables compatibility with a wide range of components, enhancing its versatility.

Detailed and Complete Alternative Models

1. LP3958TLX/NOPB: Similar to LP3958TL/NOPB, but with extended temperature range (-40°C to +150°C).
2. LP3958TLX/NOPB-REEL7: Tape and reel packaging with 2500 units per reel, same specifications as LP3958TLX/NOPB.

These alternative models offer similar functionality and characteristics to the LP3958TL/NOPB, providing options for different operating conditions and packaging requirements.

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