TPS7A91 Datasheet | Texas Instruments

Features - 1 1.0% Accuracy Over Line, Load, and Temperature - Low Output Noise: 4.7 µVRMS (10 Hz- 100 k Hz) - Low Dropout: 200 m V (max) at 1 A - Wide Input Voltage Range: 1.4 V to 6.5 V - Wide Output Voltage Range: 0.8 V to 5.2 V - High Power-Supply Ripple Rejection (PSRR): - 70 d B at DC - 40 d B at 100 k Hz - 40 d B at 1 MHz - Fast Transient Response - Adjustable Start-Up In-Rush Control with Selectable Soft-Start Charging Current - Open-Drain Power-Good (PG) Output - 2.5-mm × 2.5-mm, 10-Pin SON Package 2 Applications - High-Speed Analog Circuits: - VCO, ADC, DAC, LVDS - Imaging: CMOS Sensors, Video ASICs - Test and Measurement - Instrumentation, Medical, and Audio - Digital Loads: Ser Des, FPGA, DSP 3 Description The TPS7A91 is a low-noise (4.7 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 1 A with only 200 m V of maximum dropout. The TPS7A91 output is adjustable with external resistors from 0.8 V to 5.2 V. The TPS7A91 wide input-voltage range supports operation as low as 1.4 V and up to 6.5 V. With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce inrush current, the TPS7A91 is ideal for powering sensitive analog low-voltage devices [such as voltage-controlled oscillators (VCOs), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), high-end processors, and fieldprogrammable gate arrays (FPGAs)]. The TPS7A91 is designed to power noise-sensitive ponents such as those found in high-speed munication, video, medical, or test and measurement applications. The very low 4.7-µVRMS output noise and wideband PSRR (40 d B at 1 MHz) minimizes phase noise and clock jitter. These features maximize performance of clocking devices, ADCs, and DACs. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) SON (10) 2.50 mm × 2.50 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. 2.0 V Typical Application Circuit CIN 10 PF CNR/SS 0.1...