TPS79530DCQG4 Description
The TPS795 family of low-dropout (LDO), low-powerlinear voltage regulators features high power-supplyrejection ratio (PSRR), ultralow noise, fast start-up,and excellent line and load transient responses insmall outline, 6-pin SOT-223 and 3-mm × 3-mmVSON packages. Each device in the family is stablewith a small 1-μF ceramic capacitor on the output.The family uses an advanced, proprietary BiCMOSfabrication process to yield extremely low dropoutvoltages (for example, 110 mV at 500 mA). Eachdevice achieves fast start-up times (approximately50 μs with a 0.001-μF bypass capacitor) whileconsuming very low quiescent current (265 μA,typical). Moreover, when the device is placed instandby mode, the supply current is reduced to lessthan 1 μA. The TPS79530 device exhibitsapproximately 33 μVRMS of output voltage noise at 3-V output with a 0.1-μF bypass capacitor. Applicationswith analog components that are noise-sensitive,such as portable RF electronics, benefit from thehigh-PSRR and low-noise features, as well as fromthe fast response time.
TPS79530DCQG4 Features
? 500-mA low-dropout regulator with enable
? Available in fixed and adjustable (1.2-V to 5.5-V)
versions
? High PSRR (50 dB at 10 kHz)
? Ultralow noise (33 μVRMS, TPS79530)
? Fast start-up time (50 μs)
? Stable with a 1-μF ceramic capacitor
? Excellent load and line transient response
? Low dropout voltage (110 mV at full load,
TPS79530)
? 6-pin SOT-223 and 3-mm × 3-mm VSON
packages
TPS79530DCQG4 Applications
? RF: VCOs, receivers, ADCs
? Audio
? Bluetooth?
, wireless LAN
? Cellular and cordless telephones
? Handheld organizers, PDAs
