Ultra-Low Noise Low Dropout (LDO)
Voltage Regulator IC

Total Solutions for Powering Precision Analog Applications

The TPS7A30 LDO paired with the positive voltage TPS7A49 LDO provides designers with a total solution for powering precision analog applications. The LDOs feature ultra-high power supply rejection ratio (PSRR) performance and as low as 16 µVRMS of output noise. The TPS7A30 LDO generates -200 mA, while the TPS7A49 LDO supplies 150 mA. The LDOs are designed for noise sensitive applications.

Device	VIN (V)	IOUT (mA)	VDO (mV)	IQ (µA)	Datasheet
TPS7A30	-3 to -36	-200	216	55	Download
TPS7A49	+3 to +36	150	241	55	Download

Key Features

• 1.5% nominal accuracy
• Stable with >2.2–µF ceramic output capacitor
• Low noise/high PSRR
  • Output noise as low as 16 µVRMS
  • PSRR of 72 dB @ 1 kHz and 55 dB @ 10 kHz to 700 kHz

Key Benefits

• Better precision for VCOs, PLLs and ADCs
• Smaller size and lower cost versus tantalums
• Improved dynamic range in RF applications, filters and handling of DC/DC spikes