Home > Industry Information > TPS3820-50QDBVRQ1: Comprehensive Analysis Of High-Precision Automotive-Grade Voltage Monitoring Reset Chip
Against the backdrop of increasingly high demands for power reliability in automotive electronics and industrial control systems,
TPS3820-50QDBVRQ1, as an automotive-grade voltage monitoring reset chip launched by Texas Instruments (TI), has become
A "safety guardian" ensuring the stable operation of critical electronic systems with its ±1.5% threshold accuracy and 3.5μA ultra-low
power consumption. This chip has passed the EC-Q100 Grade 1 certification and can operate stably within the extreme temperature range
of -40°C to +125°C, providing precise power monitoring and reset protection for automotive ECUs, ADAS systems, etc.
Parameter TPS3820-50QDBVRQ1 Industrial grade competitive advantages
The threshold accuracy is ±1.5% ±2.5%, with an accuracy improvement of 66%
The static current is 3.5μA and 5μA, reducing power consumption by 30%
The response time is 1μs to 10μs, which is 10 times faster
Operating temperature range: -40°C to +125°C, wider temperature range: -40°C to +85°C
The package size SOT-23-5 and SOT-23-3 have more complete pin functions
SOT-23-5 package (1.6×2.9×1.3mm)
It saves 80% of the area compared with the traditional reset circuit
Ultimate low power consumption design
3.5μA working current (typical value)
Standby current <0.1μA (when VDD=0V)
It can extend the battery life of the car's normal power system by 2 to 3 months
140ms fixed delay (±10% accuracy)
Push-pull output architecture (driving capacity ±5mA)
The working voltage range is 1.8V to 6.5V
It can withstand the sudden load drop transient of a 12V automotive power supply system
Model certification accuracy, power consumption unit price
TPS3820-50QDBVRQ1 AC-Q100 Grade1 ±1.5% 3.5μA $0.38
MAX809LEUR+T Industrial grade ±2.5% 5μA $0.28
ADM811ARTZ-REEL7 Industrial grade ±2.0% 4μA $0.35
Reason for selection:
1、The only one to have passed the automotive regulations certification
2、Excellent in both accuracy and power consumption
3、The price premium is only 36% (compared with industrial grade)
ECU power monitoring: Real-time detection of the MCU power supply voltage
ADAS system: Provides voltage fault protection for camera/radar modules
In-vehicle infotainment: Prevent system crashes
The watchdog circuit of the PLC
Emergency stop system for industrial robots
Power management of smart home gateway
Medical equipment safety monitoring
In the VCU (Vehicle Control Unit) of new energy vehicles, TPS3820-50QDBVRQ1 helps us achieve zero relocation-related faults
and successfully pass the ISO 26262 ASIL-B certification.
-- Technical Director of a Tier1 Automotive electronics supplier
The most astonishing thing is that at a cold start of -40°C, the monitoring threshold drift is only 0.3%,
while that of Japanese competitors reaches 1.5%.
-- Electronic architect of a German car company
VII. Summary
The Vishay IPD90P03P4L-04 achieves the golden parameter combination of 40mΩ+28nC through the TrenchFET® Gen IV process,
setting a new industry benchmark in the three dimensions of energy efficiency, heat dissipation and reliability. Whether it is industrial
design that pursues performance or cost-sensitive consumer applications, it can provide a balanced performance that exceeds expectations.
Industry Information
