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High-Current (4A), High-Accuracy (0.75%), Low-Noise (4.4µVRMS), LDO Voltage Regulator


Package | PIN: RGR | 20
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $7.76
10-24 $6.98
25-99 $6.52
100-249 $5.84
250-499 $5.46
500-749 $4.75
750-999 $4.11
1000+ $4.03


  • Low Dropout: 150 mV (Typical) at 4 A
  • 0.75% (Maximum) Accuracy Over Line, Load, and Temperature With BIAS
  • Output Voltage Noise:
    • 4.4 µVRMS at 0.8-V Output
    • 7.7 µVRMS at 5.1-VOutput
  • Input Voltage Range:
    • Without BIAS: 1.4 V to 6.5 V
    • With BIAS: 1.1 V to 6.5V
  • ANY-OUT™ Operation:
    • Output Voltage Range: 0.8 V to 3.95 V
  • Adjustable Operation:
    • Output Voltage Range: 0.8 V to 5.1 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
  • θJC = 3.4°C/W
  • 3.5-mm × 3.5-mm, 20-Pin VQFN

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Texas Instruments  TPS7A8500ARGRT

The TPS7A85A is a low-noise (4.4 µVRMS), low dropout linearregulator (LDO) capable of sourcing 4 A with only 240 mV of maximum dropout. The device outputvoltage is pin-programmable from 0.8 V to 3.95 V and adjustable from 0.8 V to 5.1 V using anexternal resistor divider.

The combination of low-noise (4.4 µVRMS), high- PSRR, and highoutput current capability makes the TPS7A85A ideal to power noise-sensitive components such asthose found in high-speed communications, video, medical, or test and measurement applications. Thehigh performance of the TPS7A85A limits power-supply-generated phase noise and clock jitter, makingthis 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 5.1-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 theTPS7A85A ensure optimal system performance.

The versatility of the TPS7A8500A makes the device a component of choice for manydemanding applications.