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Product Description

For automotive off-board sensors and small 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 offboard 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 consistent power supply as onboard components to secure high 

accuracy of data acquisition.

The TPS7B4253-Q1 device is designed for automotive applications with a 45-V load dump. The device can either be used as one tracking 

lowdropout (LDO) regulator or 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 reverse polarity condition. The 

TPS7B4253-Q1 device also includes thermal shutdown, inductive clamp, overload, and short-to-battery protection to prevent damage to 

onboard components during extreme conditions.

Product 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 to 45-V Wide Input-Voltage Range (Maximum)

? Output Voltage Adjusts Down to:

– 1.5 to 40 V (HTSSOP)

– 2 to 40 V (SO PowerPAD?)

? 300-mA Output Current Capability

? Very-Low Output Tracking Tolerance, ±4 mV

? 320-mV Low Dropout Voltage when IOUT = 200 mA

? Separate Pins for Enable and Tracking Inputs (HTSSOP only)

? Low Quiescent Current (IQ):

– < 4 μA when EN = LOW

– 60 μA (Typical) at Light Loads

? Extremely Wide ESR Range.

– Stable With 10- to 500-μF Ceramic Output Capacitor, ESR 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

? Available in the Following Packages:

– 8-Pin SO PowerPAD Package

– 20-Pin HTSSOP Package

Product Applications

? Off-Board Sensor Supply

? High-Precision Voltage Tracking

? Power Switch for Off-Board Load

Specifications

Actual product photos

Product Data Book：

For more product information, please download the PDF

Payment&Transportation

Official Certificate&Certificate

Multiple product supply

Company office environment

Warehouse Real Shot

Standard packaging

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