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> Ldo 7.5A adjustable 1.22-5V fast transient response X2
Ldo 7.5A adjustable 1.22-5V fast transient response X2
7.5 A Low Dropout Voltege Regulator
Adjustable output 1.22-5V, Fast transient response
* 7.5-A Low-Dropout Voltage Regulator
* Adjustable Output Voltage: 1.22 to 5.0 Volts
* Open Drain Power-Good (PG)\ Status Output (Fixed Options Only)
* Dropout Voltage Typically 400 mV at 7.5 A (TPS75933)
* Low 125 A Typical Quiescent Current
* 3% Tolerance Over Specified Conditions for Fixed-Output Versions
* Available in 5-Pin TO-220 and TO-263 Surface-Mount Packages
The TPS759xx family of 7.5-A low dropout (LDO) regulators contains four fixed voltage option regulators with integrated power-good (PG)\ and an adjustable voltage option regulator. These devices are capable of supplying 7.5 A of output current with a dropout of 400 mV (TPS75933). Therefore, the devices are capable of performing a 3.3-V to 2.5-V conversion. Quiescent current is 125 uA at full load and drops below 10 A when the devices are disabled. The TPS759xx 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 400 mV at an output current of 7.5 A for the TPS75933) 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, 1 mA to 7.5 A). These two key specifications yield a significant improvement in operating life for battery-powered systems.
The device is enabled when EN\ is connected to a low-level voltage. This LDO family also features a sleep mode; applying a TTL high signal to EN\ (enable) shuts down the regulator, reducing the quiescent current to less than 1 A at TJ = 25 C. The power-good terminal (PG)\ is an active low, open drain output, which can be used to implement a power-on reset or a low-battery indicator.
