TPS7A89

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS7A89 SBVS280A – MARCH 2016 – REVISED JULY 2016 TPS7A89 Small, Dual, 2-A, Low-Noise (3.8 μVRMS), LDO Voltage Regulator 1 Features 1 Two Independent LDO Channels 4-mm × 4-mm, 20-Pin WQFN Package Low Output Noise: 3.8 µVRMS (10 Hz to 100 kHz) Low Dropout: 180 mV (typ) at 2 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 Rejection Ratio (PSRR): – 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 2 Applications High-Speed Analog Circuits: – VCOs, ADCs, DACs, LVDSs Imaging: CMOS Sensors, Video ASICs Test and Measurement Instrumentation, Medical, and Audio Digital Loads Auxiliary Rails: – SerDes, FPGAs, DSPs Typical Application Circuit VIN1 CIN1 CNR/SS1 VIN2 CIN2 CNR/SS2 TPS7A89 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 3 Description The TPS7A89 is a dual, low-noise (3.8 µVRMS), lowdropout (LDO) voltage regulator capable of sourcing 2 A per channel with only 400 mV of maximum dropout. The TPS7A89 provides the flexibility of two independent LDOs and approximately ...