Manufacturer Part Number
TPS78450QDBVRQ1
Manufacturer
Texas Instruments
Introduction
The TPS78450QDBVRQ1 is a low dropout (LDO) linear voltage regulator, designed specifically for automotive applications to provide a precise voltage supply.
Product Features and Performance
Provides a fixed output voltage of 5V
Supports input voltages up to 6V
Features a low dropout voltage of 0.115V at 300mA load
Delivers output currents up to 300mA
Low quiescent current of 40 µA optimizing power efficiency
Excellent Power Supply Rejection Ratio (PSRR) ranging from 60dB to 30dB over 1kHz to 1MHz frequencies
Incorporates safety and control features such as current limit, enable, and soft start
Protection mechanisms against overcurrent, overtemperature, and under-voltage lockout (UVLO)
Product Advantages
The low dropout voltage enables efficient operation even at low voltage differences between input and output
Low quiescent current enhances the longevity of battery-operated devices
Robust protection features ensure reliability under adverse conditions
High PSRR ensures stable output despite variations in the input voltage, particularly in noisy environments
Key Technical Parameters
Output Configuration: Positive, Fixed
Voltage Input (Max): 6V
Voltage Output (Min/Fixed): 5V
Voltage Dropout (Max): 0.115V @ 300mA
Current Output: 300mA
Current Quiescent (Iq): 40 µA
PSRR: 60dB ~ 30dB (1kHz to 1MHz)
Operating Temperature: -40°C to 150°C (TJ)
Quality and Safety Features
Automotive grade with AEC-Q100 qualification ensures robustness and reliability in automotive environments
Includes comprehensive protection circuitries for enhanced safety
Compatibility
Designed for surface mount, fitting into compact spaces with its SC-74A, SOT-753 package
Compatible with a broad range of automotive and industrial applications requiring stable 5V supply
Application Areas
Automotive electronics
Power management for embedded systems
Industrial controls
Consumer electronics requiring 5V power supply
Product Lifecycle
Status: Active, indicating ongoing production and availability
Not nearing discontinuation, with support and replacements readily available
Several Key Reasons to Choose This Product
Engineered by Texas Instruments, a leader in semiconductor solutions
Low dropout voltage facilitates efficient power usage
Low quiescent current ideal for power-sensitive applications
PSRR ensures stability across a range of input noises
Automotive qualification (AEC-Q100) guarantees reliability in automotive applications
Comprehensive protection features safeguard against a range of electrical hazards
Suitable for a wide range of applications due to its compatibility and robust performance metrics
