Description

The BU4825F-TR is a 100mA fixed-output voltage regulator from the LD2981 series. It is suitable for low noise, low power applications and battery powered systems due to its low drop-voltage and ultra low quiescent current.

Specifications and features

• Stable with low ESR ceramic capacitors
• Ultra low dropout voltage (0.17V typ. at 100mA load, 7mV typ. at 1mA load)
• Very low quiescent current (80µA typ. at no load in on mode; max 1µA in off mode)
• Guaranteed output current up to 100mA
• Logic-controlled electronic shutdown
• Output voltage options: 1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.2V, 3.3V, 3.6V, 3.8V, 4.0V, 4.7V, 4.85V, 5.0V
• Internal current and thermal limit
• ±0.75% tolerance output voltage available (A version)
• Output low noise voltage: 160µVRMS
• Temperature range: -40 to 125°C
• Smallest package options: SOT23-5L and SOT-89
• Fast dynamic response to line and load changes

Application Scenarios

The BU4825F-TR is commonly used in various electronic devices and systems where stable voltage regulation is required. Some specific application scenarios include:

• Battery-powered devices
• Low power applications
• Noise-sensitive systems

Comparison

• Low dropout voltage for efficient power usage
• Ultra low quiescent current for minimizing power consumption
• Wide range of output voltages available
• Stable operation with low ESR ceramic capacitors
• Compact package options for space-saving designs

• Output current limited to 100mA
• Tolerance of output voltage is ±0.75%
• Operating temperature range is -40 to 125°C, may not be suitable for extreme environments