The LT1931ES5 is a compact, high-efficiency, fixed-frequency step-up DC/DC converter from Linear Technology, designed to meet the power management demands of a wide array of portable and space-constrained devices. With its small footprint and high performance, the LT1931ES5 is an ideal choice for battery-powered applications, including handheld devices, medical equipment, and other portable consumer electronics.

Key Features and Benefits:

• High Frequency Operation: The LT1931ES5 operates at a switching frequency of 1.2MHz, allowing the use of tiny, low-cost capacitors and inductors, which reduces the overall size and cost of the power supply design.
• Wide Input Voltage Range: It accepts an input voltage range from 1.8V to 8V, making it compatible with various single and multiple cell batteries and other low voltage power sources.
• High Output Voltage: The device can generate output voltages up to 34V, making it suitable for powering OLED displays, CCDs, and other high voltage applications from a single battery cell.
• Low Quiescent Current: The quiescent current is a mere 75uA, which enhances battery life in portable applications.
• Integrated Schottky Diode: An internal 36V, 0.5A Schottky diode is built-in, simplifying the design and reducing external component count.
• Adjustable Output: The output voltage can be set with two external resistors, providing design flexibility for specific application requirements.
• Thermal Protection: The LT1931ES5 includes thermal shutdown to protect the device under over-temperature conditions.

Applications:

• Portable Electronics
• Medical Devices
• OLED Displays
• CCD Applications
• GPS Devices

The LT1931ES5 is available in a small 5-lead SOT-23 package, offering a compact solution for space-limited applications. Its high switching frequency and integrated components allow for a small overall solution size, while providing efficient power conversion with low ripple. The device's robust feature set and versatility make it an excellent choice for designers looking to optimize power efficiency and extend battery life in their products.