The MIC5238-1.0BM5 is a low dropout (LDO) voltage regulator from Micrel (now Microchip Technology). It is designed to provide a stable and accurate 1.0V output voltage with a very low dropout voltage, making it ideal for battery-powered and portable applications where maximizing battery life is crucial. This regulator features low quiescent current and excellent transient response, ensuring efficient and reliable performance even under varying load conditions.

Applications

• Battery-Powered Devices
• Portable Electronics
• Post Regulators for Switching Power Supplies
• Microprocessor Core Voltage Regulation
• Logic Supplies
• Low-Voltage Systems
• Handheld Instruments

Features

• Fixed 1.0V Output Voltage
• Low Dropout Voltage: Typically 200mV at 500mA
• Low Quiescent Current: Typically 75µA
• High Output Accuracy: ±2% Over Temperature
• Excellent Transient Response
• Overcurrent and Overtemperature Protection
• Stable with Low ESR Ceramic Output Capacitors
• Enable/Shutdown Control
• 5-Pin SOT-23 Package

Benefits

• Extended Battery Life: Low quiescent current minimizes power consumption in standby mode.
• Stable Output Voltage: High accuracy and excellent transient response ensure consistent performance under varying load conditions.
• Simplified Design: Stable with ceramic capacitors reduces the need for bulky external components.
• Robust Protection: Overcurrent and overtemperature protection prevent damage to the regulator and the load.
• Space-Saving: Small SOT-23 package is ideal for compact applications.

Additional Details

The MIC5238-1.0BM5 operates from an input voltage range typically between 2.5V and 5.5V. The enable/shutdown control allows the regulator to be turned off completely, further reducing power consumption. The regulator is designed to be stable with ceramic output capacitors, which offer low ESR and are commonly used in modern electronic devices. The device's overcurrent protection limits the output current in the event of a short circuit or overload, while the overtemperature protection shuts down the regulator if the junction temperature exceeds a safe limit. The SOT-23 package is industry-standard and easy to handle during manufacturing.