TPS61080DRCT Integrated Circuits (ICs)

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TPS61080DRCT is a DC-DC step-down switching regulator. It is part of Texas Instruments\' family of DC-DC switching regulators, designed especially for portable applications. It has an integrated, low R dson, high-side MOSFET to provide up to 1.5A of output current. It has a 5.5V to 15V input voltage and provides very high efficiency over the complete input range. The device also features an internal frequency compensation network and an internal linear regulator which reduce external components.

The TPS61080DRCT is designed for battery-powered or power-regulated DC-DC systems that require a small size, high efficiency, and good line/load regulation. Its versatile design allows it to be used in a wide variety of applications, including portable electronic equipment, handheld electronic devices, telecommunications systems, notebooks, and cellular phones.

The TPS61080DRCT is a step-down DC-DC switching regulator with a high side MOSFET switch. It operates as a buck converter, converting an input voltage between 5.5 V and 15 V to a regulated output voltage. It operates at a fixed frequency of 1.2 to 1.5MHz and provides up to 1.5A of output current. The device comes in a tiny 2x2x0.55mm package and is well suited for applications with limited circuit board space.

The TPS61080DRCT operates in cycle-by-cycle current limit mode. When the minimum current limit is detected, the switching frequency is automatically reduced and the output voltage is maintained in regulation with a low Rds(on) MOSFET. This feature helps to ensure that the maximum load current is limited and that the TPS61080DRCT will not be damaged even under extreme load conditions.

In its hysteretic mode, the TPS61080DRCT enables its internal high-side MOSFET to enter a low on-time mode to reduce its output current ripple and switching noise. This allows for a lower input voltage, greater efficiency, and higher ripple rejection. The hysteretic mode also increases the overall efficiency of the system, which helps to extend the battery life or power supply life.

The TPS61080DRCT features an adjustable output voltage with a nominal output voltage of 3.3V. The TPS61080DRCT also includes an internal linear regulator, which reduces the output noise ripple further and eliminates the need for external filter capacitors. The output voltage can be set by two external resistors.

The TPS61080DRCT has an internal soft-start feature that helps to limit the input current at startup and to prevent the output voltage from overshoot. The device also includes a precision enable input, which allows for an orderly start-up sequence. This enables the device to become active only when the voltage at the input is above a certain threshold.

The output voltage of the TPS61080DRCT is monitored by an internal voltage detector circuit. This circuit provides an over-voltage/under-voltage protection, which can be used to protect the device from excessive output voltages or to detect a fault condition.

The TPS61080DRCT also features thermal shutdown. The device will automatically shut down when the junction temperature reaches its upper limit to protect the device from thermal damage. The device can be used in either a constant frequency or an adjusted frequency mode to adjust the output voltage and minimize costs.

Overall, the TPS61080DRCT is a highly integrated and efficient DC-DC step-down switching regulator. Its wide input voltage range, low Rds(on) high-side MOSFET, adjustable output voltage, and hysteretic control mode enable it to be used in a wide variety of applications. Its small size and high efficiency make it a great choice for portable applications.

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