ZHCSGF3B July 2017 – January 2019 TPS7A92
PRODUCTION DATA.
The TPS7A92 is a low-noise, high PSRR, low dropout (LDO) regulator capable of sourcing a 2-A load with only 400 mV of maximum dropout. The TPS7A92 can operate down to a 1.4-V input voltage and a 0.8-V output voltage. This combination of low-noise, high PSRR, and low dropout voltage makes the device an ideal LDO to power a multitude of loads from noise-sensitive communication components in high-speed communications applications to high-end microprocessors or field-programmable gate arrays (FPGAs).
As shown in the Functional Block Diagram section, the TPS7A92 linear regulator features a low-noise, 0.8-V internal reference that can be filtered externally to obtain even lower output noise. The internal protection circuitry (such as the undervoltage lockout) prevents the device from turning on before the input is high enough to ensure accurate regulation. Foldback current limiting is also included, allowing the output to source the rated output current when the output voltage is in regulation but reduces the allowable output current during short-circuit conditions. The internal power-good detection circuit allows users to sequence down-stream supplies and be alerted if the output voltage is below a regulation threshold.