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

TPS7A90 (ACTIVE)

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

 

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

Description

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.





Features

  • 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 Linear regulators (LDO)

 
Output Options
Iout (Max) (A)
Vin (Max) (V)
Vin (Min) (V)
Vout (Max) (V)
Vout (Min) (V)
Package Group
Features
Regulated Outputs (#)
Operating Temperature Range (C)
Thermal Resistance θJA (°C/W)
Noise (uVrms)
Approx. Price (US$)
Rating
Output Capacitor Type
PSRR @ 100KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package Size: mm2:W x L (PKG)
TPS7A90 TPS7A91 TPS7A92
Adjustable Output     Adjustable Output     Adjustable Output    
0.5     1     2    
6.5     6.5     6.5    
1.4     1.4     1.4    
5.7     5.2     5.2    
0.8     0.8     0.8    
SON | 10     SON | 10     SON | 10    
Enable
Foldback Overcurrent Protection
Output Discharge
Power Good
Soft Start    
Enable
Foldback Overcurrent Protection
Output Discharge
Power Good
Soft Start    
Enable
Foldback Overcurrent Protection
Output Discharge
Power Good
Soft Start    
1     1     1    
-40 to 125     -40 to 125     -40 to 125    
57     57     57    
4.7     4.7     4.7    
0.60 | 1ku     1.20 | 1ku     1.50 | 1ku    
Catalog     Catalog     Catalog    
Ceramic     Ceramic     Ceramic    
48     48     48    
1     1     1    
75     130     260    
2.1     2.1     2.1    
See datasheet (SON)     See datasheet (SON)     See datasheet (SON)