1 Features
1• Qualified for automotive applications
• AEC-Q100 qualified with the following results:
– Device temperature grade 1: –40°C to +125°C
ambient operating temperature
– Device HBM ESD classification level 2
– Device CDM ESD classification level C7B
• Wide operating voltage : 1.5 V to 10 V
– Use external resistors to extend Vin range
• Nano supply current : 350 nA (Typ), 700 nA (Max)
• Fixed threshold voltage (VIT-)
– Threshold from 1.6 V to 4.9 V in 0.1-V steps
– High accuracy: 1% (Typ), 1.5% (Max)
– Built-in hysteresis (VIT+)
– 1.6 V < VIT- ≤ 3.0 V = 100 mV (typical)
– 3.1 V ≤ VIT- < 4.9 V = 200 mV (typical)
• Fast start-up delay (tSTRT): 350 μs (Max)
• Programmable capacitor-based reset time delay:
– tD: 50 μs (no capacitor) to 6.2 s (10-μF)
• Active-low manual reset (MR)
• Three output topologies:
– TPS3840DL-Q1: open-drain, active-low
(RESET)
– TPS3840PL-Q1: push-pull, active-low
(RESET)
– TPS3840PH-Q1: push-pull, active-high
(RESET)
• Package: 5-pin SOT-23 (DBV)

2 Applications
• Automotive head unit and cluster
• Automotive display, integrated cockpit and driver
monitoring
• Telematics control unit and emergency call

3 Description
The TPS3840-Q1 family of voltage supervisors or
reset ICs can operate at high voltage levels while
maintaining very low quiescent current across the
whole VDD and temperature range. TPS3840-Q1
offers best combination of low power consumption,
high accuracy and low propagation delay (tp_HL= 30
μs typical).
Reset output signal is asserted when the voltage at
VDD drops below the negative voltage threshold (VIT-)
or when manual reset is pulled to a low logic (VMR_L).
Reset signal is cleared when VDD rise above VIT- plus
hysteresis (VIT+) and manual reset (MR) is floating or
above VMR_H and the reset time delay (tD) expires.
Reset time delay can be programmed by connecting
a capacitor between CT pin and ground. For a fast
reset CT pin can be left floating.
Additional features: Low power-on reset voltage
(VPOR), built-in glitch immunity protection for MR and
VDD, built-in hysteresis, low open-drain output
leakage current (ILKG(OD)). TPS3840-Q1 is a perfect
voltage monitoring solution for automotive
applications and battery-powered / low power
applications.