TPS7B4254-Q1 Automotive 150mA 40V Voltage-Tracking LDO With 4mV Tracking Tolerance | TI.com

TPS7B4254-Q1 (ACTIVE)

Automotive 150mA 40V Voltage-Tracking LDO With 4mV Tracking Tolerance

 

Description

For automotive off-board sensors and low-current off-board modules, the power supply is through a long cable from the main board. In such cases, protection is required in the power devices for the off-board loads to prevent the onboard components from damage during a short to GND or short to battery caused by a broken cable. Off-board sensors require a power supply as consistent as that for onboard components to secure high accuracy of data acquisition.

The TPS7B4254-Q1 device is designed for automotive applications with a 45-V load dump. The device can either be used as one tracking low-dropout (LDO) regulator or as a voltage tracker to build one closed power loop for off-board sensors with an onboard main supply. The output of the device is accurately regulated by a reference voltage at the ADJ pin.

To provide an accurate power supply to the off-board modules, the device offers a 4-mV ultralow tracking tolerance between the ADJ and FB pins across temperature. The back-to-back PMOS topology eliminates the need for an external diode under a reverse-polarity condition. The TPS7B4254-Q1 device also includes thermal shutdown, inductive clamp, overload, and short-to-battery protection to prevent damage to onboard components during extreme conditions.

Features

  • 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
  • –40-V to 45-V Wide Input-Voltage Range (Maximum)
  • Output-Voltage Adjust Range: 2 V to 40 V
  • 150-mA Output Current Capability
  • Very Low Output-Tracking Tolerance, ±4 mV
  • 160-mV Low-Dropout Voltage When IOUT = 100 mA
  • Low Quiescent Current (I(Q)):
    • < 4 µA When ADJ = LOW
    • 60 µA Typical at Light Load
  • Extremely Wide ESR Range
    • 10-µF to 500-µF Ceramic Output Capacitor
    • ESR Range from 1 mΩ to 20 Ω
  • Reverse Polarity Protection
  • Current-Limit and Thermal-Shutdown Protection
  • Output Short-Circuit-Proof to Ground and Supply
  • Inductive Clamp at OUT Pin
  • 8-Pin SO PowerPAD Package With Exposed Thermal Pad

Parametrics

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Part number Order Output options Iout (Max) (A) Vin (Max) (V) Vin (Min) (V) Vout (Max) (V) Vout (Min) (V) Package Group Features Regulated outputs (#) Operating temperature range (C) Thermal resistance θJA (°C/W) Approx. price (US$) Rating Output capacitor type PSRR @ 100 KHz (dB) Accuracy (%) Vdo (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
TPS7B4254-Q1 Order now Adjustable Output
Tracking Output    
0.15     40     4     40     2     SO PowerPAD | 8     Reverse Current Protection
Reverse Voltage Protection    
1     -40 to 125     45     0.70 | 1ku     Automotive     Ceramic
Non-Ceramic    
43       160     0.06     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS7B4250-Q1 Order now Adjustable Output
Tracking Output    
0.05     40     4     18     1.5     SOT-23 | 5     Reverse Current Protection
Reverse Voltage Protection    
1     -40 to 125     172     0.40 | 1ku     Automotive     Ceramic     60       250     0.04     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
TPS7B4253-Q1 Order now Adjustable Output
Tracking Output    
0.3     40     4     40     1.5     HTSSOP | 20
SO PowerPAD | 8    
Enable
Reverse Current Protection
Reverse Voltage Protection    
1     -40 to 125     45     0.85 | 1ku     Automotive     Ceramic
Non-Ceramic    
60       350     0.04     20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS7B7701-Q1 Order now Adjustable Output     0.3     40     4     20     1.5     HTSSOP | 16     Adjustable Current Limit
Current Sense
Enable
Power Good
Reverse Current Protection
Reverse Voltage Protection    
1     -40 to 125     40     1.00 | 1ku     Automotive     Ceramic
Non-Ceramic    
60     2     350     0.6     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)