TPS2513AQDBVTQ1

TPS2513AQDBVTQ1 Application Field and Working Principle

The TPS2513AQDBVTQ1 from Texas Instruments is a very power efficient and reliable power distribution switch forPDAs, portable media players,and other handheld devices. This power switch embeds integrated HSDT on-resistor and temperature protection to reduce overall system cost. The very small 3x3QFN package and high level of integration make this power switch ideal for compact and space-constrained applications. It supports up to 1.1A output current and automatic power savings with extremely low off-state power draw reduction.

Features and Applications

The TPS2513AQDBVTQ1 provides a variety of features tailored for optimal power management and control. It provides an integrated high-side power switch with an adjustable on-resistor, thermal protection, and adjustable switch on/off delay time. It also features a PGOOD (Power Good) output signal and adjustable power on resistor tolerance. In addition, the device provides circuit protection against supply sequencing, reverse current, in-rush current limit, and over-voltage.

The TPS2513AQDBVTQ1 is a power switch intended for a variety of applications such as PDAs, Internet-enabled mobile phones, MP3 players, and other handheld devices. This power switch is a high current, low power solution for the power management of many handheld devices. It provides the enhanced reliability, scalability, and power management control needed for these applications.

Working Principle

The TPS2513AQDBVTQ1 operates on a single power supply ranging from 0.9V to 5.5V. It operates on a low voltage logic level supply (1.5V minimum) and is controlled by an enable pin (EN). When EN is logic high, the power switch is enabled, and the device starts switching ends current to the load. The maximum load current is rated up to 1.1A and is significantly improved by the on-resistor. The switching time is adjustable between either 0.5ms or 1.0ms. As a precaution, the TPS2513AQDBVTQ1 includes a thermal protection circuit.

The device also includes a PGOOD (Power Good) output signal to inform the system controller of the actual peripheral power status. Further, the device provides a unique sequence protection circuit that prevents the device from switching on during a power sequence when the power rail (IN) voltage is lower than the logic supply (EN) voltage. It also provides an adjustable power-on resistor tolerance to filter out excessive noise caused by the power supply fluctuations.

Conclusion

The TPS2513AQDBVTQ1 is a very power efficient and reliable power distribution switch designed for PDAs, portable media players, and other handheld devices. It provides integrated HSDT on-resistor and temperature protection, and with its very small 3x3QFN package it is ideal for compact and space-constrained applications. It features a variety of features tailored for optimal power management and control, such as adjustable on-resistor, adjustable switch on/off delay time, PGOOD output signal and adjustable power on resistor tolerance.