Data Sheet and Application of S-1131B48UC-N5HTFU Voltage Regulators – Linear

The S-1131B48UC-N5HTFU , produced by Seiko Instruments Inc., is a voltage regulator (VR) of the linear type. The data sheet indicates that it is an adjustable and high-performance regulator suitable for a variety of applications. It is also highly suitable for use in both switching and linear power supplies, audio power amplifiers and voltage reference circuits.

Description

The S-1131B48UC-N5HTFU is an adjustable positive voltage regulator and provides a highly reliable and stable output voltage, even with varying input voltages or power supply loads. It also features very low output noise, excellent ripple rejection characteristics and protection against over-voltage and overload conditions. The S1131B48UC-N5HTFU has a wide temperature operating range from -40 °C to +85 °C and a typical operating temperature range of -20 °C to +85 °C.

Features

• Output current: 1A
• Output voltage range: 1.8V to 25V (adjustable)
• Ultra-low dropout voltage
• Low output noise: 20mVrms
• Excellent ripple rejection characteristics: 80dB (min)
• Programmable over-voltage, under-voltage, short-circuit and over-temperature protections
• Output voltage trimming range: ±10%
• Output voltage accuracy: ±2% (typ)
• Wide operating temperature range: -40°C to 85°C

Applications

The S-1131B48UC-N5HTFU voltage regulator is highly suitable for applications that require a highly reliable and stable output voltage in the presence of varying input voltages or power supply loads, such as:

• Switching power supplies
• Linear power supplies
• Audio power amplifiers
• Voltage reference circuits
• Battery powered equipment
• Computer peripheral equipment
• Digital audio & video circuits
• Telecommunications equipment
• Industrial control equipment

Working Principle

The S-1131B48UC-N5HTFU is an adjustable high-performance linear voltage regulator that features an on-board voltage reference, which ensures its highly reliable and stable output voltage. The voltage reference maintains a constant voltage drop between the input and output even with varying input voltages or power supply loads. Thus, it is able to provide a continuous and smooth output voltage that is independent of both input voltage and load current variations.

The S-1131B48UC-N5HTFU also has built-in over-voltage, under-voltage, short-circuit, and over-temperature protections, which ensure that it does not become damaged in the event of a failure. It also has low output noise and excellent ripple rejection characteristics, making it suitable for use in many different types of applications.

In summary, the S-1131B48UC-N5HTFU is a high-performance linear voltage regulator that offers a wide operating temperature range and a wide input voltage range, as well as excellent ripple rejection characteristics, low noise, and protection against overload and over-voltage conditions. It is a highly reliable and stable regulator that is suitable for a wide range of applications.