Introduction

The S-1131B43PD-N5CTFG is a highly efficient two-terminal linear voltage regulator for use in applications such as telecommunications, computers, automotive, and general purpose power supplies. It features low output voltage such as 3.3 Vdc, adjustable output voltage of up to 24 Vdc, low power consumption (as low as 6V), and high current load capabilities (0.3 A continuous, 0.7 A peak).

Efficiency

This device employs two pairs of efficiency-enhancing mechanisms to maintain good regulation of the output voltage over line, load, and temperature variations. First, the high effective gain helps to provide greater than 4% output voltage regulation over line variations. Secondly, an improved dynamic phase compensation loop reduces control loop phase shifts caused by output current pulse rates and transient conditions. The combination of both methods ensures high efficiency and performance across the range of input and output voltage conditions.

Features

The S-1131B43PD-N5CTFG offers several features that make it ideal for a wide range of applications. These features include:

• Low Output Voltage (3.3 Vdc)
• Adjustable Output Voltage (up to 24 Vdc)
• Low Power Consumption (as Low as 6V)
• High Current Load Capability (0.3 A Continuous, 0.7 A Peak)
• Composite Error Amplifier
• High Effective Gain
• Improved Dynamic Phase Compensation Loop

In addition, the S-1131B43PD-N5CTFG is RoHS-compliant, making it suitable for use in applications such as telecommunications and automotive.

Application Fields

The S-1131B43PD-N5CTFG is ideal for a wide range of applications, such as:

• Telecommunications
• Computers
• Automotive systems
• Medical instruments
• Industrial control systems
• Consumer electronics
• General power supply applications
• Battery-powered devices

Working Principle

The S-1131B43PD-N5CTFG is a two-terminal linear voltage regulator that operates using the following working principle. When the input voltage rises above the predetermined output voltage of the device, the output voltage is decreased due to the error amplifier, which compares the output voltage with an internal reference voltage, and applies corrective measures.The error amplifier generates an output signal that is passed on to the output field effect transistor (FET-Q2), which modulates the output voltage and maintains it constant. This prevents the device from dropping out due to heavy load conditions, which could potentially damage the device.The device is also equipped with a temperature sensing circuit that controls the voltage drop-out rate and maintains the device in a safe operating temperature range. This ensures the device does not overheat or cause thermal runaway.

Conclusion

The S-1131B43PD-N5CTFG is a highly efficient linear voltage regulator for use in applications such as telecommunications, computers, automotive, and general purpose power supplies. It features low output voltage, adjustable output voltage, low power consumption, and high current load capabilities. The device employs two pairs of efficiency-enhancing mechanisms to ensure high performance and efficiency across the range of input and output voltage conditions. The device is RoHS-compliant and suitable for use in a wide range of applications, making it ideal for many commercial and industrial applications.