TI TPS77633D

The TPS775xx and TPS776xx devices are designed to have a fast transient response and be stable with a 10μF low ESR capacitor. This combination provides high performance at a reasonable cost. Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 169mV at an output current of 500mA for the TPS77x33) 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 85μA over the full range of output current, 0mA to 500mA). These two key specifications yield a significant improvement in operating life for battery-powered systems. 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 1μA at TJ = +25°C.

• Open Drain Power-On Reset with 200ms Delay (TPS775xx) Open Drain Power Good (TPS776xx)
• 500mA Low-Dropout Voltage Regulator Available in Fixed Output and Adjustable Versions Dropout Voltage to 169mV (Typ) at 500mA (TPS77x33)
• Ultralow 85μ Typical Quiescent Current
• Fast Transient Response 2% Tolerance Over Specified Conditions for Fixed-Output Versions
• 8-Pin SOIC and 20-Pin TSSOP PowerPAD (PWP) Packages
• Thermal Shutdown Protection

• FPGA Power
• DSP Core and I/O Voltages