TPS7A8400RGRR

產品資訊

3-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good with high-accuracy

Low dropout: 180 mV (max) at 3 A 1% (max) accuracy over line, load, and temperature Output voltage noise: 4.4 µV RMS at 0.8-V output 7.7 µV RMS at 5.0-V output Input voltage range: Without BIAS: 1.4 V to 6.5 V With BIAS: 1.1 V to 6.5 V ANY-OUT™ operation: Output voltage range: 0.8 V to 3.95 V Adjustable operation: Output voltage range: 0.8 V to 5.0 V Power-supply ripple rejection: 40 dB at 500 kHz Excellent load transient response Adjustable soft-start in-rush control Open-drain power-good (PG) output Stable with a 47-µF or larger ceramic output capacitor 3.5-mm × 3.5-mm, 20-pin VQFN

The TPS7A84 is a low-noise (4.4 µV RMS ), low-dropout linear regulator (LDO) capable of sourcing 3 A with only 180 mV of maximum dropout. The device output voltage is pin-programmable from 0.8 V to 3.95 V and adjustable from 0.8 V to 5.0 V using an external resistor divider. The combination of low-noise (4.4 µV RMS ), high PSRR, and high output current capability makes the TPS7A84 ideal to power noise-sensitive components such as those found in high-speed communications, video, medical, or test and measurement applications. The high performance of the TPS7A84 limits power-supply-generated phase noise and clock jitter, making this device ideal for powering high-performance serializer and deserializer (SerDes), analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and RF components. Specifically, RF amplifiers benefit from the high-performance and 5.0-V output capability of the device. For digital loads [such as application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and digital signal processors (DSPs)] requiring low-input voltage, low-output (LILO) voltage operation, the exceptional accuracy (0.75% over load and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A84 ensure optimal system performance. The versatility of the TPS7A84 makes the device a component of choice for many demanding applications.