TPS7A90 500mA High-Accuracy Low-Noise Low-Dropout (LDO) Voltage Regulator |


500mA High-Accuracy Low-Noise Low-Dropout (LDO) Voltage Regulator

500mA High-Accuracy Low-Noise Low-Dropout (LDO) Voltage Regulator - TPS7A90

Recommended alternative parts

  • LP5912  -  The LP5912 is a 500mA fixed output voltage low IQ, low noise LDO
  • TPS7A87  -  The TPS7A87 is a dual 500mA LDO regulator with improved noise (3.8µVrms) in a very small package (4 mm x 4 mm)
  • TPS7A19  -  TPS7A19 is a 450mA 40V high voltage ultralow quiescent current watchdog LDO


The TPS7A90 device is a low-noise (4.7 µVRMS), low-dropout (LDO) voltage regulator capable of sourcing 500 mA with only 100 mV of maximum dropout to 5 V and 200 mV to 5.7 V.

The TPS7A90 output is adjustable with external resistors from 0.8 V to 5.7 V. The TPS7A90 wide input voltage range supports operation as low as 1.4 V and up to 6.5 V.

With 1% output voltage accuracy (over line, load, and temperature) and soft-start capabilities to reduce in-rush current, the TPS7A90 is ideal for powering sensitive analog low-voltage devices [such as voltage-controlled oscillators (VCOs), analog-to-digital converters (ADCs), and digital-to-analog converters (DACs)].

The TPS7A90 is designed to power noise-sensitive components such as those found in high-speed communication, video, medical, or test and measurement applications. The very low 4.7-µVRMS output noise and wideband PSRR (30 dB at 1 MHz) minimizes phase noise and clock jitter. These features maximize performance of clocking devices, ADCs, and DACs.


  • 1.0% Accuracy Over Line, Load, and Temperature
  • Low Output Noise: 4.7 µVRMS (10 Hz–100 kHz)
  • Low Dropout: 100 mV (max) at 0.5 A
  • Wide Input Voltage Range: 1.4 V to 6.5 V
  • Wide Output Voltage Range: 0.8 V to 5.7 V
  • High Power-Supply Rejection Ratio (PSRR):
    • 60 dB at DC
    • 50 dB at 100 kHz
    • 30 dB at 1 MHz
  • Fast Transient Response
  • Adjustable Start-Up In-Rush Control With Selectable Soft-Start Charging Current
  • Open-Drain Power-Good (PG) Output
  • θJC = 3.2ºC/W
  • 2.5-mm × 2.5-mm, 10-Pin WSON Package

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Parametrics Compare all products in Single Channel LDO

Iout (Max) (A)
Output Options
Vin (Min) (V)
Vin (Max) (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)
0.5     1     2    
Adjustable Output     Adjustable Output     Adjustable Output    
1.4     1.4     1.4    
6.5     6.5     6.5    
0.8     0.8     0.8    
5.7     5.2     5.2    
2.1     2.1     2.1    
75     130     260    
1     1     1    
4.7     4.7     4.7    
48     48     48    
Ceramic     Ceramic     Ceramic    
Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125    
10SON     10SON     10SON