Automotive Low-Dropout Voltage-Tracking LDO - TPS7B4250-Q1


Automotive Low-Dropout Voltage-Tracking LDO


The TPS7B4250-Q1 device is a monolithic, integrated low-dropout voltage tracker. The device is available in a SOT-23 package. The TPS7B4250-Q1 device is designed to supply off-board sensors in an automotive environment. The IC has integrated protection for overload, over temperature, reverse polarity, and output short-circuit to the battery and ground.

A reference voltage applied at the adjust-input pin, ADJ, regulates supply voltages up to VIN = 45 V with high accuracy and loads up to 50 mA.

By setting the adjust/enable input pin, ADJ/EN, to low, the TPS7B4250-Q1 device switches to standby mode which reduces the quiescent current to the minimum value.

For all available packages, see the orderable addendum at the end of the datasheet.


  • 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 3A
    • Device CDM ESD Classification Level C6
  • –20-V to 45-V Wide, Maximum Input Voltage Range
  • Output Current, 50 mA
  • Very-Low Output-Tracking Tolerance,
    5 mV (max)
  • 150-mV Low Dropout Voltage When
    IOUT = 10 mA
  • Combined Reference and Enable Input
  • 40-µA Low Quiescent Current at Light Load
  • Extreme, Wide ESR Range.
    • Stable with 1-µF to 50-µF Ceramic Output Capacitor, ESR 1 mΩ to 20 Ω
  • Reverse Polarity Protection
  • Overtemperature Protection
  • Output Short-Circuit Proof to Ground and Supply
  • SOT-23 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)
PSRR @ 100KHz (dB)
Output Capacitor Type
Additional Features
Operating Temperature Range (C)
TPS7B4250-Q1 TPS7B4253-Q1 TPS7B4254-Q1
0.05     0.3      
Adjustable Output
Tracking Output    
Adjustable Output
Tracking Output    
4     4      
40     40      
1.5     1.5      
18     40      
0.04     0.04      
250     350      
60     60      
Ceramic     Ceramic
Overcurrent Protection
Reverse Current Protection
Reverse Voltage Protection
Thermal Shutdown    
Overcurrent Protection
Reverse Current Protection
Reverse Voltage Protection
Thermal Shutdown    
Automotive     Automotive     Automotive    
-40 to 125     -40 to 125     -40 to 125    
5SOT-23     20HTSSOP
8SO PowerPAD    
8SO PowerPAD