TPS7A47-Q1 Automotive 35V, 1A, 4.2μVRMS, RF Low-Dropout (LDO) Voltage Regulator |


Automotive 35V, 1A, 4.2μVRMS, RF Low-Dropout (LDO) Voltage Regulator

Automotive 35V, 1A, 4.2μVRMS, RF Low-Dropout (LDO) Voltage Regulator - TPS7A47-Q1

Recommended alternative parts

  • TPS7A88-Q1  -  TPS7A88-Q1 is a dual-channel, low-noise, 1-A LDO.


The TPS7A47-Q1 device is a positive voltage (35 V), ultra-low-noise (4.2 µVRMS) low-dropout linear regulator (LDO) capable of sourcing a 1-A load.

The TPS7A47-Q1 output voltage can be configured with a user-programmable printed circuit board (PCB) layout (up to 20.5 V), or adjustable (up to 34 V) with external feedback resistors.

The TPS7A47-Q1 is designed with bipolar technology primarily for high-accuracy, high-precision instrumentation applications where clean voltage rails are critical to maximize system performance. This feature makes the device ideal for powering operational amplifiers, analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and other high-performance analog circuitry.

In addition, the TPS7A47-Q1 is ideal for post dc-dc converter regulation. By filtering out the output voltage ripple inherent to dc-dc switching conversions, maximum system performance is ensured in sensitive instrumentation, audio, and RF applications.


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4A
  • Input Voltage: 3 V to 35 V
  • Operating Junction Temperature: –40°C to +145°C
  • Output Voltage Noise:
    4.2 µVRMS (10 Hz–100 kHz)
  • Power-Supply Rejection Ratio:
    • 82 dB (100 Hz)
    • ≥ 55 dB (10 Hz–10 MHz)
  • Two Output Voltage Modes:
    • ANY-OUT™ Version (User-Programmable Output via PCB Layout):
      • Output Voltage: 1.4 V to 20.5 V
    • Adjustable Operation:
      • Output Voltage: 1.4 V to 34 V
  • Output Current: 1 A
  • Thermal resistance: θJA = 31.1°C/W
  • Dropout Voltage: 307 mV at 1 A
  • CMOS Logic Level-Compatible Enable Pin
  • Built-In Fixed Current Limit and
    Thermal Shutdown

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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)
TPS7A47-Q1 TL1963A-Q1
1     1.5    
Adjustable Output
Programmable Output    
Adjustable Output    
3     2.1    
36     20    
1.4     1.2    
34     20    
0.58     1    
216     340    
2.5     4    
4     40    
60     45    
Ceramic     Ceramic    
Automotive     Automotive    
-40 to 125     -40 to 125    
20VQFN     5DDPAK/TO-263    

Other qualified versions of TPS7A47-Q1

Version Part Number Definition
Catalog TPS7A47 TI's standard catalog product