TC1189SECTTR

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The TC1189SECTTR, or Texas Instruments TC1189SECTTR, is a device designed for providing a steady and reliable supply of voltage and current. This device is classified as a PMIC (power management integrated circuit) linear voltage regulator. It is intended for applications that require adjustable voltage levels, accurate current limit and high transient response.

The TC1189SECTTR can provide up to 1A output current and operates within an input voltage range between 4.75 and 17V. It features adjustable output voltage, low quiescent current, thermal protection, current limit and fast transient response. The device is available in a tiny SOT-23-5 package.

The TC1189SECTTR is designed for use in lithium battery-powered or AC-DC power supply applications. It is ideal for a wide range of low-voltage and low-power applications, including LED drivers, portable audio equipment, cellular phones and other handheld electronic devices. It is also suitable for use in automotive and industrial control systems, providing improved efficiency, higher reliability and longer lifetime.

The TC1189SECTTR features two core functions: voltage regulation and current limit. Voltage regulation ensures that the voltage supplied to the load is kept at a steady and stable level while current limit prevents the current from exceeding a predetermined value. These two functions are combined in one device to offer an efficient and reliable supply of power and protect the load against current spikes.

The TC1189SECTTR operates in boost and buck-boost topologies. In boost mode, the device samples the input voltage and compares it to the reference voltage. If the input voltage is lower than the reference voltage, the device increases the output voltage until it reaches the set value. In buck-boost mode, the device performs the same operation but with the opposite effect. It reduces the output voltage until the set value is reached.

To ensure accurate and reliable operation of the output voltage, the TC1189SECTTR incorporates an internal voltage reference and a comparator. The voltage reference provides the set point for the output voltage while the comparator compares the input voltage with the reference voltage. This comparison triggers a change in the output voltage according to the mode of operation selected.

The TC1189SECTTR also features a current limit protection circuit. This circuit is designed to protect the load against over-current conditions by limiting the amount of current that can flow through the load. When the current exceeds the set value, the current limit circuit is activated and the output voltage is reduced until the current is reduced to the safe level.

In conclusion, the TC1189SECTTR is a PMIC linear voltage regulator designed for battery-powered and AC-DC systems. Its combination of voltage regulation, current limit and fast transient response provides an efficient and reliable power supply for a wide range of applications. The device is available in a small SOT-23-5 package and integrates several functions into a single package, making it an ideal choice for space-constrained applications.

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