TPS54231DR Switching regulator integrates low Ros (on) high sideMOSFET asynchronous Buck converter. To improve efficiency under light load, the function of pulse skipping Eco mode is automatically activated. In addition, the 1MA down power current allows the device to be used in battery-powered applications.
TPS54231DR current mode control with internal slope compensation simplifies external compensation calculations and reduces the number of components while allowing the use of ceramic output capacitors. The resistance divider programs the lag of the input undervoltage lock. The overvoltage transient protection circuit limits voltage overshoot during startup and transient conditions. In the case of overload, the periodic current limiting scheme, frequency reversal, and thermal shutdown protect the device and load.
Product attributes
Main features:
3.5 to 28V input voltage range
Adjustable output voltage down to 0.8V
Integrated 80 Mo high voltage side MOSFET supports SUP to 2 A continuous output current
High efficiency is achieved by using Eco mode TM with pulse oscillation under light load conditions
Fixed 570 KHZ switching frequency
Typical 1 MA shutdown static current
Adjustable slow start to limit inrush current
Programmable UVLO threshold
Over voltage transient protection cycle by cycle
Current limiting, frequency backoff and thermal shutdown protection
Provides an easy-to-use SOIC8 package
TPS54231DR devices are mainly used in consumer areas, such as SET-top box CPE devices, LCD displays, peripherals and battery chargers, industrial and automotive audio power supply 5-V, 12-V and 24-V distributed power systems, which should also be very widespread.