LT1158IN#PBF

PMIC - Gate Drivers

In the world of integrated circuits, the LT1158IN#PBF is a high-current, low-power gate driver. Allowing microprocessors and other digital logic to drive high power loads, the device converts a low-voltage/current TTL/CMOS to higher-voltage/current signals.

The LT1158IN#PBF gate driver is part of the family of PMIC (Power Management Integrated Circuits). Aimed at reducing the total system size and increasing efficiency, PMICs integrate power management functionality onto one chip. This chip can implemented in various applications, electronic systems and digital logic.

Working Principle of LT1158IN#PBF

The LT1158IN#PBF functions by converting low-level processor signals, such as originating from a 3.3V microprocessor, into high-level signals capable of driving power MOSFETs, bipolar transistors, and IGBTs. This makes it possible to drive high power devices while still keeping the processor board power levels low.

The device operates from a single +5V supply, with a very low quiescent current and active current of 4mA. It has internal ESD protection, and its common-mode operating voltage is -5V to 15V. It can handle input signals up to 3.6V and output the signals up to 15Vpk. It requires very little external components, with minimal setup time for the designer.

Application Fields for LT1158IN#PBF

The LT1158IN#PBF is well suited for many power management applications, from inverters to motor control, DC/DC converters, switched-mode power supplies, power distributions, and power sequencing. It has the capability to run up to 20A of load current, making it suitable for use in applications requiring a moderate power output. As an example, the LT1158IN#PBF can be used as a motor driver, providing a seamless and safe switchover from digital logic to motor power.

The device also provides advanced features such as surge protection, frequency synchronization, fault protection and current limiting, making it a suitable choice for applications such as high-frequency converters, robotics, and other high-current and high-voltage applications. These applications can benefit from the device’s low quiescent and active current, as well as its low-level switchover capabilities.

Conclusion

The LT1158IN#PBF is an excellent choice for applications requiring a high-current and low-power gate driver that is able to access low-voltage/current signals and convert them to high-voltage/current signals. With its low-level switchover and advanced surge protection, the device is suitable for a wide range of PMIC applications, including motor control, DC/DC converters, switched-mode power supplies, and power sequencing.