描述 Description

The TLV840-Q1 device is a voltage supervisor or reset IC that can operate at wide input voltage levels from 0.7 V to 6 V while maintaining very low quiescent current across the whole VDD and temperature range. TLV840-Q1 offers the 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-). Reset signal is cleared when VDD rise above VIT- plus hysteresis (VHYS) and the reset time delay (tD) expires. Reset time delay can be programmed by connecting a capacitor between the CT pin and ground. For a minimum reset delay time the CT pin can be left floating. The TLV840-Q1, with its manual reset pin (MR), offers program flexibility by forcing the system into a hard reset when the pin is asserted.

Additional features: Low power-on reset voltage (VPOR), built-in glitch immunity protection for VDD, built-in hysteresis, low open-drain output leakage current (Ilkg(OD)). TLV840-Q1 is a perfect voltage monitoring solution for automotive applications and battery-powered / low-power applications.

特性 Features

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

Designed for high performance:
? Nano supply current : 120 nA (Typ)
? High accuracy: ±0.5% (Typ)
? Built-in hysteresis (VHYS): 5% (Typ)
? Fixed threshold voltage (VIT-): 0.8 V to 5.4 V
Designed for a wide range of applications:
? Operating voltage range : 0.7 V to 6 V
? Fixed (VIT-) voltage: 0.8 V to 5.4 V in 0.1 V steps
? Programmable reset time delay (tD)
? Min time delay: 40 μs (typ) without capacitor

? Active-low manual reset (MR)
Multiple output topologies / Package type:
? Four output topologies (RESET / RESET):
? TLV840MADL-Q1: open-drain, active-low
? TLV840MAPL-Q1: push-pull, active-low
? TLV840MADH-Q1: open-drain, active-high
? TLV840MAPH-Q1: push-pull, active-high

? Package: SOT23-5 (DBV)