3-A, low-VIN (1.1-V), low-noise, high-accuracy, ultra-low-dropout (LDO) voltage regulator
Product details
Parameters
Package | Pins | Size
Features
- 0.5% (max) accuracy over line, load, and temperature with BIAS
- Output voltage noise: 4.4 µVRMS
- Low dropout: 110 mV (max) at 3 A with BIAS
- Power-supply rejection ratio:
- 40 dB at 500 kHz
- Input voltage range:
- Without BIAS: 1.4 V to 6.5 V
- With BIAS: 1.1 V to 6.5 V
- Adjustable output voltage range: 0.8 V to 5.2 V
- Adjustable soft-start inrush control
- Open-drain, power-good (PG) output
- 2.2-mm × 2.5-mm, 12-pin VQFN package
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Description
The TPS7A53 is a low-noise (4.4 µVRMS), ultra-low dropout linear-regulator (LDO) capable of sourcing 3 A with only 110 mV of maximum dropout. The device output voltage is adjustable from 0.8 V to 5.2 V using an external resistor divider.
The combination of low noise (4.4 µVRMS), high PSRR, and high output current capability makes the TPS7A53 an excellent choice to power noise-sensitive components such as those found in high-speed communications, video, medical, or test-and-measurement applications. The high performance of this device 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), and digital-to-analog converters (DACs). Specifically, RF amplifiers benefit from the high performance and
5.2-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 (0.5% over load and temperature), remote sensing, excellent transient performance, and soft-start capabilities of the TPS7A53 provides optimal system performance.
As an adjustable voltage regulator, there is versatility in the design of the TPS7A53 that makes the device a component of choice for analog loads such as VCO, ADC, DAC, and imaging sensors and for digital loads such as SerDes, FPGAs, and DSPs.
Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | TPS7A53 3-A, High-Accuracy (0.5%), Low-Noise (4.4 µVRMS), LDO Voltage Regulator datasheet (Rev. B) | May 07, 2020 |
| Technical articles | Minimize noise and ripple with a low-noise buck converter | Oct. 21, 2020 | |
| Technical articles | LDO basics: capacitor vs. capacitance | Aug. 01, 2018 | |
| Technical articles | LDO Basics: Preventing reverse current | Jul. 25, 2018 | |
| Technical articles | LDO basics: introduction to quiescent current | Jun. 20, 2018 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The TPS7A53 evaluation module (EVM) is designed for a typical configuration to evaluate the operation and performance of the TPS7A53 device, which is a high-accuracy, 3-A, low-VIN, low-VOUT, low-dropout (LDO) voltage regulator.
The EVM circuit board is configured to be a reference design for (...)
Features
- Adjustable output-voltage range: 0.8 V to 5.2 V
- Low dropout: 125 mV (max) at 3 A with BIAS
- Output-voltage noise: 4.4 µVRMS
- Adjustable soft-start in-rush control
Design tools & simulation
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| VQFN-HR (RPS) | 12 | View options |
Ordering & quality
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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