JAJSKP2E august 2020 – august 2023 TPS37-Q1
PRODUCTION DATA
This design requires voltage supervision on a 12 V power supply voltage rail with possibility of the 12 V rail rising up as high as 42 V. The undervoltage fault occurs when the power supply voltage drops below 7.7 V.
PARAMETER | DESIGN REQUIREMENT | DESIGN RESULT |
---|---|---|
Power Rail Voltage Supervision | Monitor 12-V power supply for undervoltage condition, trigger a undervoltage fault at 7.7 V. | TPS37-Q1 provides voltage monitoring with 1.5% max accuracy with adjustable/non-adjustable variations. |
Maximum Input Power | Operate with power supply input up to 42 V. | The TPS37-Q1 can support a VDD of up to 65 V. |
Output logic voltage | Open-Drain Output Topology | An open-drain output is recommended to provide the correct reset signal, but a push-pull can also be used. |
Maximum system current consumption | 2 µA max when power supply is at 12 V typical | TPS37-Q1 allows for IQ to remain low with support of up to 65 V. This allows for no external resistor divider to be required. |
Voltage Monitor Accuracy | Maximum voltage monitor accuracy of 1.5%. | The TPS37-Q1 has 1.5% maximum voltage monitor accuracy. |
Delay when returning from fault condition | RESET delay of at least 12.8 ms when returning from a undervoltage fault. | CCTR = 10 nF sets 12.8 ms delay |