LTC1844ES5-1.8 Low-Dropout Voltage Regulator

The LTC1844ES5-1.8 is a high-performance, low-dropout (LDO) voltage regulator from Linear Technology, designed to deliver a fixed output voltage of 1.8V with an input voltage range of 2.7V to 5.5V. This compact and efficient regulator is ideal for portable applications due to its low quiescent current and small footprint.

The LTC1844ES5-1.8 comes in a space-saving TSOT-23 package, making it suitable for space-constrained applications. It is designed to provide up to 150mA of output current while maintaining a low dropout voltage, which ensures efficient operation even when the input voltage is close to the output voltage.

Key Features:

• Fixed Output Voltage: 1.8V
• Maximum Output Current: 150mA
• Low Dropout Voltage: Typically 120mV at 150mA
• Wide Input Voltage Range: 2.7V to 5.5V
• Low Quiescent Current: 30µA typical in operation,
• Overcurrent and Overtemperature Protection
• Stable with Low ESR Ceramic Capacitors
• No Protection Diodes Needed
• Controlled Quiescent Current in Dropout
• Low Profile (1mm) SOT-23 (ThinSOT™) Package

The device features a low-noise output, which makes it suitable for RF and precision analog applications. It also includes overcurrent and overtemperature protection, enhancing the reliability and longevity of the regulator under various operating conditions. The LTC1844ES5-1.8 is designed to be stable with ceramic capacitors, which are preferred in modern electronics for their size, reliability, and performance characteristics.

This voltage regulator does not require protection diodes, simplifying the design and reducing the bill of materials for the end application. The controlled quiescent current in dropout condition helps prolong battery life, making it an excellent choice for battery-powered devices.

Overall, the LTC1844ES5-1.8 from Linear Technology is a robust and reliable solution for applications requiring a stable and efficient power supply, with the added benefits of low quiescent current and protection features.