Packaging information
| Package | Pins VQFN-HR (RPS) | 12 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the TPS7A53B
- Accuracy over line, load, and temperature with BIAS: 0.5%
- Output voltage noise: 4.6µVRMS
- Low dropout: 110mV (max) at 3A with BIAS
- Power-supply rejection ratio:
- 48dB at 500kHz
- Input voltage range:
- Without BIAS: 1.4V to 6.5V
- With BIAS: 1.1V to 6.5V
- Adjustable output voltage range: 0.5V to 5.15V
- Adjustable soft-start inrush control
- Open-drain, power-good (PG) output
- 2.5mm × 2.2mm, 12-pin VQFN package
Description for the TPS7A53B
The TPS7A53B is a low-noise (4.6µVRMS), ultra-low dropout linear regulator (LDO) capable of sourcing 3A with only 110mV of maximum dropout. The device output voltage is adjustable from 0.5V to 5.15V using an external resistor divider.
The combination of low noise (4.6µVRMS), high PSRR, and high output current capability makes the TPS7A53B a great solution for powering noise-sensitive components. Applications include high-speed communications, video, medical, or test and measurement. The high PSRR and low noise performance of this device limits power-supply-generated phase noise and clock jitter, making this device a good choice for powering high-performance serializers and deserializers (SerDes), analog-to-digital converters (ADCs), and digital-to-analog converters (DACs). Specifically, RF amplifiers benefit from the high performance and 5.15V 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, low-output (LILO) voltage operation, the exceptional accuracy (0.5% over load and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A53B provides optimal system performance.
As an adjustable voltage regulator, the design of the TPS7A53B offers versatility. This versatility makes the device a component of choice for analog loads such as voltage-controlled oscillators (VCOs), ADCs, DACs, and imaging sensors and for digital loads such as SerDes, FPGAs, and DSPs.