50-mA 40-V Voltage-Tracking LDO With 5-mV Tracking Tolerance

50-mA 40-V Voltage-Tracking LDO With 5-mV Tracking Tolerance - TPS7B4250-Q1


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 data sheet.


  • 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)
Accuracy (%)
PSRR @ 100KHz (dB)
Output Capacitor Type
Operating Temperature Range (C)
TPS7B4250-Q1 TPS7B4253-Q1 TPS7B4254-Q1 TPS7B7701-Q1
0.05    0.3    0.15    0.3   
Adjustable Output
Tracking Output   
Adjustable Output
Tracking Output   
Adjustable Output
Tracking Output   
Adjustable Output   
4    4    4    4   
40    40    40    40   
1.5    1.5    2    1.5   
18    40    40    20   
0.04    0.04    0.06    0.6   
250    350    160    350   
60    60    43    60   
Ceramic    Ceramic
Automotive    Automotive    Automotive    Automotive   
-40 to 125    -40 to 125    -40 to 125    -40 to 125   
5SOT-23    20HTSSOP
8SO PowerPAD   
8SO PowerPAD    16HTSSOP