LP3936SL/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Dropout Voltage, Small Package Size
• Package: 8-Lead LLP
• Essence: Regulator IC with Adjustable Output Voltage
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Range: 0.6V to VIN
• Maximum Output Current: 1.5A
• Dropout Voltage: 200mV at 1A
• Quiescent Current: 50µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LP3936SL/NOPB has the following pin configuration:

1. EN (Enable): Enable Input Pin
2. GND (Ground): Ground Connection
3. FB (Feedback): Feedback Voltage Input Pin
4. VOUT (Output Voltage): Output Voltage Pin
5. VIN (Input Voltage): Input Voltage Pin
6. PG (Power Good): Power Good Output Pin
7. NC (No Connect): No Connection
8. SW (Switch): Switching Node Pin

Functional Features

• Adjustable Output Voltage: The LP3936SL/NOPB allows users to adjust the output voltage within a specified range.
• High Efficiency: This IC offers high efficiency, minimizing power loss during operation.
• Low Dropout Voltage: With a low dropout voltage, the LP3936SL/NOPB can maintain stable output even when the input voltage is close to the output voltage.
• Power Good Indicator: The Power Good pin provides an indication of the output voltage status.

Advantages and Disadvantages

Advantages

• Compact Size: The small package size of the LP3936SL/NOPB makes it suitable for space-constrained applications.
• Wide Input Voltage Range: The IC can operate with input voltages ranging from 2.5V to 5.5V, providing flexibility in various power supply scenarios.
• Low Quiescent Current: The quiescent current of only 50µA helps conserve power during standby or low-load conditions.

Disadvantages

• Limited Maximum Output Current: The LP3936SL/NOPB has a maximum output current of 1.5A, which may not be sufficient for high-power applications.
• Narrow Output Voltage Range: The adjustable output voltage range is limited to 0.6V to VIN, which may not meet the requirements of certain applications.

Working Principles

The LP3936SL/NOPB is a regulator IC that utilizes a control loop to maintain a stable output voltage. It operates by comparing the feedback voltage (FB) with a reference voltage and adjusting the duty cycle of an internal switch accordingly. This control mechanism ensures that the output voltage remains within the desired range, even with variations in input voltage and load conditions.

Detailed Application Field Plans

The LP3936SL/NOPB is commonly used in various applications, including:

1. Portable Electronic Devices: Due to its small package size and low dropout voltage, the IC is suitable for powering portable devices such as smartphones, tablets, and wearable devices.
2. Battery-Powered Systems: With its wide input voltage range and high efficiency, the LP3936SL/NOPB is ideal for battery-powered systems, extending battery life and optimizing power usage.
3. Industrial Control Systems: The regulator IC can be employed in industrial control systems that require stable and reliable power management.

Detailed and Complete Alternative Models

1. LP3919SL/NOPB: Similar to the LP3936SL/NOPB, this IC offers adjustable output voltage and high efficiency. However, it has a higher maximum output current of 2A.
2. LP3940SL/NOPB: This alternative model provides a wider output voltage range compared to the LP3936SL/NOPB, making it suitable for applications requiring a broader voltage selection.

In conclusion, the LP3936SL/NOPB is a power management IC with adjustable output voltage, high efficiency, and a small package size. It finds applications in portable electronic devices, battery-powered systems, and industrial control systems. While it has limitations in terms of maximum output current and output voltage range, alternative models such as the LP3919SL/NOPB and LP3940SL/NOPB offer different specifications to suit specific requirements.