The LT1931AES5#TRPBF is a compact, high-efficiency, fixed-frequency step-up DC/DC converter from Linear Technology that is designed to operate as a boost converter. It is an ideal solution for applications requiring a small footprint and high performance, such as handheld devices, GPS units, and portable medical equipment.

Key Features

• High Voltage Capability: With an output voltage range that can go as high as 34V, the LT1931AES5#TRPBF is capable of driving multiple LEDs in series, making it suitable for backlighting and display applications.
• High Switching Frequency: Its internal 1.2MHz fixed frequency oscillator allows the use of small, low-cost capacitors and inductors, reducing the overall size of the power supply design.
• Low V<sub>CESAT Switch: The device includes a 0.36 Ohm internal switch that can deliver output voltages up to 34V from an input voltage range of 2.6V to 16V, providing efficient power conversion over a wide input range.
• High Efficiency: The LT1931AES5#TRPBF offers efficiencies up to 86%, which can be further enhanced by using synchronous rectification.
• Soft-Start Function: To prevent inrush current during startup, the device features an internal soft-start function that gradually ramps up the output voltage.
• Stable with Ceramic Capacitors: The device remains stable with ceramic output capacitors, which are smaller, more reliable, and have lower equivalent series resistance (ESR) compared to other types of capacitors.
• Thermal Protection: It includes thermal shutdown protection that turns off the device to prevent damage from overheating.

Applications

The LT1931AES5#TRPBF is versatile and can be used in a variety of applications:

• Portable Lighting
• GPS Devices
• Portable Medical Instruments
• Small LCD Displays
• Backup Power Supplies
• Low Power Wireless Transmitters

With its high switching frequency and the ability to deliver a high output voltage from a low input voltage, the LT1931AES5#TRPBF is an excellent choice for designers looking for a power-efficient, space-saving boost converter solution.