Single Output LDO, 5.0A, Adj.(1.22 To 5.0V), Low Quiescent Current, Fast Transient Response

The TPS756xx family of 5-A low dropout (LDO) Regulators contains four fixed voltage option Regulators and an adjustable voltage option Regulator These devices are capable of supplying 5 A of output current with a dropout of 250 mV TPS75633 . Therefore, the device is capable of performing a 3.3-V to 2.5-V conversion. Quiescent current is 125 A at full load and drops down to less than 1 A when the device is disabled. The TPS756xx is designed to have fast transient response for large load current changes. Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 250 mV at an output current of 5 A for the TPS75633 and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independent of output loading (typically 125 A over the full range of output current). These two key specifications yield a significant improvement in operating life for battery-powered systems.
The device is enabled when EN (enable) is connected to a high voltage level (> 2 V). Applying a low voltage level (< 0.7 V) to EN shuts down the Regulator reducing the quiescent current to less than 1 A at TJ = 25C.
The TPS756xx is offered in 1.5-V, 1.8-V, 2.5-V, and 3.3-V fixed-voltage versions and in an adjustable version (programmable over the range of 1.22 V to 5 V). Output voltage tolerance is specified as a maximum of 3% over line, load, and temperature ranges. The TPS756xx family is available in a 5-pin TO?220 (KC) and TO?263 (KTT) packages.
By Texas Instruments