TPS61261DRVT

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The TPS61261DRVT is an integrated point-of-load (POL) synchronous step-down DC/DC converter. It includes an internal high-side switch and synchronous rectifier, allowing the device to support up to 2A load current from a single Li+ cell input. It provides excellent light-load efficiency with an operational range from 2V to 6V, making it well suited for ultra-low quiescent-current applications. The device operates from a regulated 2.5V to 6V supply, providing either a fixed or adjustable output voltage with an output range of 0.6V to 5.3V. It includes over-temperature, current-limit, and over-voltage protection.

The TPS61261DRVT is suitable for low to medium power applications in portable and mobile devices such as PDAs, digital cameras, cell phones, laptops, and notebook PCs. It is compatible with many power management ICs and is offered in a thermally enhanced thin SOIC package, making it suitable for use in space-constrained designs. It also features an overall efficiency of up to 95%, making it an ideal choice for high-efficiency applications.

TPS61261DRVT Application Field and Working Principle

The TPS61261DRVT is a synchronous buck converter that is optimized for low-power, small form-factor designs. It is targeted for a wide range of applications such as load regulation, constant-output-voltage applications, power sequencing and voltage scaling. It also can be used for portable and handheld applications including PDAs, digital cameras, cell phones, and laptops.

The TPS61261DRVT uses a synchronous-rectified buck converter with internal high-side and low-side power MOSFETs. An external compensation network is not needed to achieve good the loop stability. As the voltage of the input source varies, the output voltage is regulated according to the voltage of the input source up to a preset value. The integrated internal current-limit feature provides an over-current defense function by setting the maximum operating current, while the thermal shutdown feature protects the device from damaging thermal conditions.

The device features a wide input voltage range of 2.5V to 6V and an adjustable output current of up to 2A. The output voltage range is programmable from 0.6V to 5.3V. An integrated output discharge circuitry is also available for discharging the output voltage. The device is optimized for low-power, small form-factor designs, with an overall efficiency of up to 95%. It is offered in a thin-profile SOIC-8 package.

Due to the TPS61261DRVT’s highly efficient operation, small footprint and wide input voltage range, it is an ideal choice for portable and low power applications. The device is able to efficiently supply up to 2A load current from a single Li+ cell input, making it an ideal choice for powering portable devices such as PDAs and digital cameras. In addition, the device is compatible with many power management ICs, providing flexibility and easy integration.

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