TPS38A010122DSKRQ1

TPS38-Q1 is a 65V input voltage detector with 1 μA IDD, 1% accuracy, and a fast 10 μs detection time. The device connects directly to 12V/24V automotive battery systems for continuous monitoring of overvoltage (OV) or undervoltage (UV) conditions; its use of an internal resistive voltage divider results in a very compact overall solution size. The wide range of available hysteresis voltage options allows cold cranking, stop-start, and various automotive battery voltage transients to be ignored. The built-in hysteresis on the SENSE pin prevents false reset signals when monitoring power supply voltage rails. Separate VDD and SENSE pins provide the redundancy required for high-reliability automotive systems, with SENSE capable of monitoring voltages both higher and lower than VDD. The high-impedance input of the SENSE pin supports the use of optional external resistors. The CTSx and CTRx pins allow delay adjustment of the rising and falling edges of the RESET signal. In addition, CTSx can ignore voltage glitches on the monitored voltage rail, functioning as a debouncer; CTRx serves as a manual reset (MR) function and can be used to force a system reset. The TPS38-Q1 is available in WSON or SOT-23 packages. The WSON package features wettable flanks to facilitate automated optical inspection (AOI) and low-resolution X-ray inspection. Per the guidelines in IEC60664, the center pad is non-conductive to increase the creepage distance between VDD and GND.

Applications

• Telematics control unit
• Emergency call system
• Audio amplifier
• Head unit and instrument cluster
• Sensor fusion and camera
• Body control module

Key features

• AEC-Q100 qualified
• Device temperature grade 1: -40°C to +125°C ambient operating temperature range TA
• Device HBM ESD classification level 2
• Device CDM ESD classification level C7B
• Wide supply voltage range: 2.7V to 65V
• SENSE and RESET pins rated at 65V
• Low quiescent current: 1μA (typical)
• Flexible and wide voltage threshold options:
• 2.7V to 36V (up to 1.5% accuracy)
• 800mV option (up to 1% accuracy)
• Built-in hysteresis (VHYS):
• Percentage options: 2% to 13% (1% step)
• Fixed options: VTH<8V = 0.5V, 1.5V, 2V, 2.5V
• Programmable reset delay time:
• 10nF = 12.8ms
• 10μF = 12.8s
• Programmable detection delay time:
• 10nF = 1.28ms
• 10μF = 1.28s
• Manual reset (MR) function
• Output reset latch function
• Output topology:
• Channel 1: open-drain or push-pull
• Channel 2: open-drain