TPS7A87

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS7A87 SBVS281A – MARCH 2016 – REVISED JULY 2016 TPS7A87 Dual, 500-mA, Low-Noise (3.8 μVRMS), LDO Voltage Regulator 1 Features 1 Two Independent LDO Channels Low Output Noise: 3.8 µVRMS (10 Hz–100 kHz) Low Dropout: 100 mVMAX at 0.5 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: – 75 dB at DC – 40 dB at 100 kHz – 40 dB at 1 MHz 1.0% Accuracy Over Line, Load, and Temperature Excellent Load Transient Response Adjustable Start-Up In-Rush Control Selectable Soft-Start Charging Current Independent Open-Drain Power-Good (PGx) Outputs Stable with a 10 µF or Larger Ceramic Output Capacitor 4-mm × 4-mm, 20-Pin WQFN Package 2 Applications High-Speed Analog Circuits: – VCOs, ADCs, DACs, LVDSs Imaging: CMOS Sensors, Video ASICs Test and Measurement Instrumentation and Medical Professional Audio Typical Application Circuit VIN1 CIN1 CNR/SS1 VIN2 CIN2 CNR/SS2 TPS7A87 IN1 OUT1 EN1 SS_CTRL1 FB1 NR/SS1 IN2 EN2 SS_CTRL2 NR/SS2 PG1 OUT2 FB2 PG2 GND R11 R21 R12 R22 VOUT1 COUT1 VOUT2 COUT2 Copyright © 2016, Texas Instruments Incorporated 3 Description The TPS7A87 is a dual, low-noise (3.8 µVRMS), lowdropout (LDO) voltage regulator capable of sourcing 500 mA per channel with only 100 mV of maximum dropout. The TPS7A87 provides the flexibility of two independent LDOs and approximately 30%...