TPS79501-Q1 Automotive Catalog Single Output LDO, 500mA, Adj.(1.2 to 5.5V), Low Noise, High PSRR |

TPS79501-Q1 (ACTIVE)

Automotive Catalog Single Output LDO, 500mA, Adj.(1.2 to 5.5V), Low Noise, High PSRR


Recommended alternative parts

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


The TPS79501-Q1 low-dropout (LDO), low-power linear voltage regulator features high power-supply rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load transient responses in a small outline SON package. The device is stable with a small 1-µF ceramic capacitor on the output. The TPS79501-Q1 uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 110 mV at 500 mA). The device achieves fast start-up times (approximately 50 µs with a 0.001-µF bypass capacitor) while consuming very low quiescent current (265 µA, typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1 µA. The TPS79501-Q1 exhibits approximately 33 µVRMS of output voltage noise at 3-V output with a 0.1-µF bypass capacitor. Applications with analog components that are noise-sensitive, such as portable RF electronics, benefit from the high-PSRR and low-noise features, as well as from the fast response time.


  • Qualified for Automotive Applications
  • 500-mA Low-Dropout Regulator With Enable
  • High PSRR (50 dB at 10 kHz)
  • Ultralow Noise (33 µVRMS, TPS79501-Q1)
  • Fast Start-Up Time (50 µs)
  • Stable With a 1-µF Ceramic Capacitor
  • Excellent Load/Line Transient Response
  • Low Dropout Voltage (110 mV at Full Load, TPS79501-Q1)
    • RF: VCOs, Receivers, ADCs
    • Audio
    • Bluetooth®, Wireless LAN

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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)
Fixed output options (V)
Package Group
Regulated outputs (#)
Operating temperature range (C)
Thermal Resistance θJA (°C/W)
Noise (uVrms)
Approx. price (US$)
Output capacitor type
PSRR @ 100 KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package size: mm2:W x L (PKG)
TPS79501-Q1 TPS79633-Q1
Adjustable Output     Fixed Output    
0.5     1    
5.5     5.5    
2.7     2.7    
5.4     3.3    
1.2     3.3    
SON | 8     SOT-223 | 6    
Enable     Enable    
1     1    
-40 to 125     -40 to 125    
48     70    
33     42    
1.34 | 1ku     1.60 | 1ku    
Automotive     Automotive    
Ceramic     Ceramic    
40     42    
2     2    
110     220    
0.26     0.26    
See datasheet (SON)     6SOT-223: 46 mm2: 7.06 x 6.5 (SOT-223 | 6)