Low-Noise, High-Bandwidth PSRR, Low-Dropout 1-A Linear Regulator

Low-Noise, High-Bandwidth PSRR, Low-Dropout 1-A Linear Regulator - TPS7A8101

Recommended alternative parts

  • TPS7A91  -  TPS7A91 is the next-generation version of this device with lower noise and lower dropout.
  • TPS7A88  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   TPS7A88 is a dual-channel, low noise, 1-A LDO.


The TPS7A8101 low-dropout linear regulator (LDO) offers very good performance in noise and power-supply rejection ratio (PSRR) at the output. This LDO uses an advanced BiCMOS process and a PMOSFET pass device to achieve very low noise, excellent transient response, and excellent PSRR performance.

The TPS7A8101 device is stable with a 4.7-µF ceramic output capacitor, and uses a precision voltage reference and feedback loop to achieve a worst-case accuracy of 3% over all load, line, process, and temperature variations.

This device is fully specified over the temperature range of TJ = –40°C to 125&#deg;C and is offered in a 3-mm × 3-mm, SON-8 package with a thermal pad.


  • Low-Dropout 1-A Regulator with Enable
  • Adjustable Output Voltage: 0.8 V to 6 V
  • Wide-Bandwidth High PSRR:
    • 80 dB at 1 kHz
    • 60 dB at 100 kHz
    • 54 dB at 1 MHz
  • Low Noise: 23.5 µVRMS typical (100 Hz to
    100 kHz)
  • Stable with a 4.7-µF Capacitance
  • Excellent Load and Line Transient Response
  • 3% Overall Accuracy (Over Load, Line,
  • Overcurrent and Overtemperature Protection
  • Very Low Dropout: 170 mV Typical at 1 A
  • Package: 3-mm × 3-mm SON-8

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Parametrics Compare all products in Single Channel LDO

Iout (Max) (A)
Output Options
Vin (Min) (V)
Vin (Max) (V)
Fixed Output Options (V)
Vout (Min) (V)
Vout (Max) (V)
Iq (Typ) (mA)
Vdo (Typ) (mV)
Accuracy (%)
Noise (uVrms)
PSRR @ 100KHz (dB)
Output Capacitor Type
Operating Temperature Range (C)
TPS7A8101 TPS7A80
1    1   
Adjustable Output    Adjustable Output
Fixed Output   
2.2    2.2   
6.5    6.5   
0.8    0.8   
6    6   
0.06    0.06   
170    170   
3    3   
23    50   
60    57   
Ceramic    Ceramic   
Catalog    Catalog   
-40 to 125    -40 to 125   
8SON    8SON   

Other qualified versions of TPS7A8101

Version Part Number Definition
Automotive TPS7A8101-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects
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WEBENCH® Designer TPS7A8101

  Min   Max Range
Vin  V 2.2 to 6.5V
Vout  V 0.8 to 6V
Iout  A ≤ 1A
Ambient Temp  °C -40 to 125°C

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