TPS7B4254-Q1 Series
Automotive 150-mA, off-battery (40-V), adjustable voltage-tracking low-dropout voltage regulator
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Automotive 150-mA, off-battery (40-V), adjustable voltage-tracking low-dropout voltage regulator
| Part | Number of Regulators | Protection Features | Package / Case [custom] | Package / Case | Package / Case [custom] | Voltage - Output (Min/Fixed) | Output Configuration | Voltage - Output (Max) [Max] | Supplier Device Package | Current - Quiescent (Iq) | Voltage Dropout (Max) [Max] | Grade | Current - Output | Qualification | PSRR | Output Type | Mounting Type | Current - Supply (Max) [Max] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS7B4254QDDARQ1 | 1 | Over Current, Over Temperature, Reverse Polarity, Short Circuit | 3.9 mm | 8-PowerSOIC | 0.154 in | 2 V | Positive | 40 V | 8-SO PowerPad | 100 µA | 0.26 V | Automotive | 150 mA | AEC-Q100 | 70 dB | Adjustable | Surface Mount | 260 µA |
Key Features
• Qualified for Automotive ApplicationsAEC-Q100 Qualified With the Following ResultsDevice Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature RangeDevice HBM ESD Classification Level 3ADevice CDM ESD Classification Level C6–40-V to 45-V Wide Input-Voltage Range (Maximum)Output-Voltage Adjust Range: 2 V to 40 V150-mA Output Current CapabilityVery Low Output-Tracking Tolerance, ±4 mV160-mV Low-Dropout Voltage When IOUT= 100 mALow Quiescent Current (I(Q)):< 4 µA When ADJ = LOW60 µA Typical at Light LoadExtremely Wide ESR Range10-µF to 500-µF Ceramic Output CapacitorESR Range from 1 mΩ to 20 ΩReverse Polarity ProtectionCurrent-Limit and Thermal-Shutdown ProtectionOutput Short-Circuit-Proof to Ground and SupplyInductive Clamp at OUT Pin8-Pin SO PowerPAD Package With Exposed Thermal PadQualified for Automotive ApplicationsAEC-Q100 Qualified With the Following ResultsDevice Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature RangeDevice HBM ESD Classification Level 3ADevice CDM ESD Classification Level C6–40-V to 45-V Wide Input-Voltage Range (Maximum)Output-Voltage Adjust Range: 2 V to 40 V150-mA Output Current CapabilityVery Low Output-Tracking Tolerance, ±4 mV160-mV Low-Dropout Voltage When IOUT= 100 mALow Quiescent Current (I(Q)):< 4 µA When ADJ = LOW60 µA Typical at Light LoadExtremely Wide ESR Range10-µF to 500-µF Ceramic Output CapacitorESR Range from 1 mΩ to 20 ΩReverse Polarity ProtectionCurrent-Limit and Thermal-Shutdown ProtectionOutput Short-Circuit-Proof to Ground and SupplyInductive Clamp at OUT Pin8-Pin SO PowerPAD Package With Exposed Thermal Pad
Description
AI
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.
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.