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2-A high-accuracy low-noise low-dropout (LDO) voltage regulator

Availability: 94


Package | PIN: VQFN-HR (RPS) | 12
Temp: Q (-40 to 125)
Package qty | Carrier: 3,000 | LARGE T&R
Qty Price
1-99 $2.19
100-249 $1.96
250-999 $1.40
1,000+ $1.19


  • 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
  • Low dropout: 125 mV (max) at 2 A with BIAS
  • Output voltage noise: 4.4 µVRMS
  • 1% (max) accuracy over line, load, and temperature with BIAS
  • Power-supply ripple rejection:
    • 40 dB at 500 kHz
  • 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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Texas Instruments  PTPS7A5201RPSR

The TPS7A52 is a low-noise (4.4 µVRMS), low-dropout linearregulator (LDO) capable of sourcing 2 A with only 125 mV of maximum dropout. Thedevice 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 highoutput current capability makes the TPS7A52 an excellent choice to power noise-sensitive componentssuch as those found in high-speed communications, video, medical, or test-and-measurementapplications. The high performance of this device limits power-supply-generated phase noise andclock 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 thedevice.

For digital loads [such as application-specific integrated circuits (ASICs),field-programmable gate arrays (FPGAs), and digital signal processors (DSPs)] requiring low-inputvoltage, low-output (LILO) voltage operation, the exceptional accuracy (0.75% over load andtemperature), remote sensing, excellent transient performance, and soft-start capabilities of theTPS7A52 provides optimal system performance.

As an adjustable voltage regulator, there is versatility in the design of the TPS7A52that makes the device a component of choice for analog loads such as voltage-controlled oscillator(VCO), ADC, DAC, and imaging sensors and for digital loads such as SerDes, FPGAs, and DSPs.