Linear Technology's LT1611CS5 Step-Up DC/DC Converter

The LT1611CS5, manufactured by Linear Technology, is a compact and efficient step-up DC/DC converter that is designed to provide a versatile solution for boosting low voltage inputs to higher outputs. This component is particularly suitable for battery-powered applications where extending the battery life is crucial. It comes in a small SOT-23 5-pin package, making it an excellent choice for space-constrained applications.

Key Features:

• Wide Input Voltage Range: The LT1611CS5 operates from an input voltage as low as 1.2V, making it ideal for single-cell lithium-ion or multi-cell alkaline/NiMH applications.
• High Switching Frequency: With a 1.4MHz fixed switching frequency, this converter allows for the use of small, low-cost capacitors and inductors, which reduces the overall footprint and cost of the power supply design.
• High Output Voltage: It can produce output voltages up to 34V, providing ample headroom for a wide range of applications, from OLED displays to CCD sensors.
• Low Quiescent Current: The device features a low quiescent current, which is essential for battery-operated devices where power efficiency is a priority.
• Internal 2A Switch: The LT1611CS5 includes an internal 2A, 36V switch, which enables it to deliver significant current outputs even with a high step-up ratio.
• Soft-Start Function: The built-in soft-start function limits inrush current during startup, which can prevent system glitches and extend battery life.

Applications:

The LT1611CS5 is versatile and can be used in various applications, including:

• Portable Electronics
• GPS Devices
• Medical Instruments
• Wireless Transmitters
• Handheld Scanners

Overall, the LT1611CS5 from Linear Technology is a robust and reliable choice for designers looking to efficiently step up their power supply voltage. Its high-frequency operation, low quiescent current, and small package size make it a highly practical component for modern electronic devices.