LT1575CS8-3.5#PBF

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LT1575CS8-3.5#PBF is a voltage regulator controller in the PMIC (Power Management IC) Linear Regulator Controller product family. It is an adjustable version of the LT1575, which is suitable for applications that require an accurate output voltage. The LT1575CS8-3.5#PBF features an adjustable output voltage range of 1.2 V to 28 V and allows external components to set the output voltage. It has two modes of operation, normal and low-power (LP). Normal mode gives the best transient response while LP mode gives the best overall power efficiency.

Features and Benefits

• Fast overload response time
• Large output voltage range from 1.2 V to 28 V
• Adjustable output
• Amplified output for increased gain
• Reduced alternator output voltage ripple
• Low power standby mode
• High efficiency over a wide input voltage range
• Over current/over temperature protection
• Lower inductor/capacitor size

Applications

• LED lighting
• Power Supplies
• Portable devices
• Set-top boxes
• Industrial equipment
• Automotive electronics

Working Principle

The LT1575CS8-3.5#PBF is a current mode step-down DC/DC converter controller with an adjustable output voltage range. The switching frequency is set by an internal oscillator and can be synchronized with an external clock signal. The output voltage is set by a pair of external resistors or a potentiometer. The LT1575CS8-3.5#PBF includes internal power MOSFETs and current sense resistors to provide an overall efficient solution. The controller also includes protection features such as over-voltage, under-voltage, over-temperature, and over-current protection. The LT1575CS8-3.5#PBF also features burst and pulse-skipping modes to reduce power consumption in light load conditions. It also supports load transient response and line transient response. The LT1575CS8-3.5#PBF can be synchronized to an external clock signal and can be enabled via a logic signal.

Conclusion

The LT1575CS8-3.5#PBF is a versatile voltage regulator controller in the PMIC Linear Regulator Controller product family. It offers an adjustable output voltage range, fast overload response time, and low power standby mode for increased efficiency. It supports synchronization to an external clock signal, load and line transient response, and over-voltage, under-voltage, over-temperature and over-current protection. The LT1575CS8-3.5#PBF is suitable for LED lighting, power supplies, portable devices, set-top boxes, industrial equipment, and automotive electronics.

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