Manufacturer Part Number
TPS78433BQWDRBRQ1
Manufacturer
Texas Instruments
Introduction
Power management voltage regulator designed for automotive applications.
Product Features and Performance
Low-dropout voltage regulator
Fixed 3.3V output
High PSRR (Power Supply Rejection Ratio) across a wide frequency range
Maximum input voltage of 6V
Low quiescent current of 40 µA
Overcurrent and overtemperature protection
Enable pin for power sequencing
Product Advantages
Enhanced thermal performance with exposed pad
High reliability for automotive applications
Robust against voltage variations due to high PSRR
Key Technical Parameters
Input Voltage (Max): 6V
Output Voltage (Fixed): 3.3V
Current - Output: 300mA
Dropout Voltage (Max): 0.32V @ 300mA
PSRR: 60dB ~ 30dB (1kHz ~ 1MHz)
Quiescent Current (Iq): 40 µA
Operating Temperature Range: -40°C ~ 150°C
Quality and Safety Features
Automotive-grade reliability (AEC-Q100 certified)
Overcurrent protection
Thermal shutdown
Under voltage lock out (UVLO)
Compatibility
8-SON (3x3) surface mount package compatible with standard SMT processes
Wettable flank feature for enhanced optical inspection
Application Areas
Automotive electronics
Power supplies for microcontrollers and digital systems
Industrial applications
Product Lifecycle
Status: Active
Not currently reported as nearing discontinuation
Potential availability of replacements or upgrades not explicitly stated
Several Key Reasons to Choose This Product
Designed specifically for demanding automotive environments
Low dropout performance allows for efficient operation even with low input-output voltage differentials
High PSRR ensures clean voltage regulation against supply noise
Low quiescent current optimizes power conservation in standby mode
High temperature tolerance up to 150°C catering to under-the-hood applications
Ease of integration with wettable flanks for enhanced solderability and inspectability
Compliance with AEC-Q100 Grade 1 qualification for automotive systems reliability
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