LT1573CS8-3.3#PBF

The LT1573CS8-3.3#PBF is an IC (integrated circuit) from Linear Technology Corporation and is part of their Linear Regulator Controllers PMIC (power management IC) series. It is a precision, high-performance, high-efficiency switch-mode controller with a wide range of applications in battery-powered systems. It is designed to provide DC power conversions that have low quiescent and switching currents, low Input voltage and output voltage droop and high accuracy and efficiency.The features of the LT1573CS8-3.3#PBF include:

• Wide input voltage range: 2.5V to 15V
• Wide output voltage range: 0.5V to 12V
• Low quiescent current: 1.2 mA
• Low switching current: 3 mA
• Low input voltage and output voltage droop
• Accurate precision current limit
• High efficiency step-down regulator
• Low output voltage ripple
• Automatic power down/up functions
• High switching frequency: 1.8 MHz
• Integrated UVLO and VEC functions

The LT1573CS8-3.3#PBF has the capacity to provide precise step-down regulation for various applications such as power conversions for portable medical instruments, charging systems, battery powered systems, low voltage and high current DC/DC conversion and more. Its efficient, precise and low ripple power conversion allows lower power loss, saving energy, and improving system reliability and battery life.The LT1573CS8-3.3#PBF is a switch mode controller which uses Pulse Width Modulation (PWM) to regulate the output voltage. When the input voltage is higher the maximum output voltage, the LT1573CS8-3.3#PBF will enter step-down mode and will open the power switch and regulates the output voltage with a external N-channel MOSFET. This MOSFET will be active when the input voltage is higher than the maximum output voltage and will off when the input voltage is lower. This process varies the duty cycle of the MOSFET to regulate the output voltage and also multiplies the input voltage to provide higher efficiency. The LT1573CS8-3.3#PBF also includes an integrated low voltage current limiter and voltage error amplifier to improves system line regulation and ensures an efficient and precise step-down regulation.The LT1573CS8-3.3#PBF is a highly efficient and precise linear regulator controller with a wide input voltage range and an even wider output voltage range. It uses Pulse Width Modulation (PWM) to regulate the output voltage with a external N-channel MOSFET and includes integrated UVLO and VEC functions for improved system line regulation and efficiency. Its efficient, precise and low ripple power conversion allows lower power loss and improved system reliability and battery life making it suitable for various applications including power conversions for portable medical instruments, charging systems, battery powered systems, low voltage and high current DC/DC conversion and more.