TPS7A63-Q1 300-mA 40-V Low-Dropout Regulator With Ultra-Low IQ |


300-mA 40-V Low-Dropout Regulator With Ultra-Low IQ


Recommended alternative parts

  • TPS7B70-Q1  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 


The TPS7A63-Q1 and TPS7A6401-Q1 are a family of low-dropout linear voltage regulators designed for low power consumption and quiescent current less than 35 µA in light-load applications. These devices, designed to achieve stable operation even with a low-ESR ceramic output capacitor, feature an integrated programmable window watchdog and overcurrent protection. Designers can program the output voltage using external resistors. A low-voltage tracking feature allows for a smaller input capacitor and can possibly eliminate the need of using a boost converter during cold-crank conditions. The power-on-reset delay is fixed (250 µs typical), or an external capacitor can program the delay. Because of such features, these devices are well-suited in power supplies for various automotive applications.


  • Qualified for Automotive Applications
  • AEC-Q100 Test Guidance With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C2
  • Low Dropout Voltage
    • 300 mV at IOUT = 150 mA
  • 11-V to 40-V Wide Input-Voltage Range
    With up to 45-V Transients
  • 300-mA Maximum Output Current
  • Ultralow Quiescent Current
    • IQUIESCENT = 35 µA (Typical) at Light Loads
    • ISLEEP < 2 µA When EN = Low
  • Fixed (3.3-V and 5-V) and Adjustable (2.5-V to
    7-V) Output Voltages
  • Integrated Watchdog With Fault/Flag
  • Stable With Low-ESR Ceramic Output Capacitor
  • Integrated Power-On Reset
    • Programmable Delay
    • Open-Drain Reset Output
  • Integrated Fault Protection
    • Short-Circuit and Overcurrent Protection
    • Thermal Shutdown
  • Low Input-Voltage Tracking
  • Thermally Enhanced 14-Pin HTSSOP-PWP Package and 10-Pin VSON-DRK 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)
Fixed output options (V)
Package Group
Regulated outputs (#)
Operating temperature range (C)
Thermal Resistance θJA (°C/W)
Approx. price (US$)
Output capacitor type
PSRR @ 100 KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package size: mm2:W x L (PKG)
TPS7B63-Q1 TPS7B68-Q1
Fixed Output     Fixed Output    
0.3     0.5    
40     40    
4     4    
5     5    
3.3     3.3    
HTSSOP | 16     HTSSOP | 28    
Power Good
Watchdog Timer    
Power Good
Watchdog Timer    
1     1    
-40 to 125     -40 to 125    
40     38    
0.98 | 1ku     1.15 | 1ku    
Automotive     Automotive    
55     50    
2     2    
300     150    
0.019     0.019    
16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)     28HTSSOP: 62 mm2: 6.4 x 9.7 (HTSSOP | 28)