Datasheet Texas Instruments TPS3806I33DBVRG4 — 数据表

TPS3806J20
TPS3806I33
www.ti.com SLVS393A – JULY 2001 – REVISED NOVEMBER 2004 Dual Voltage Detector with Adjustable Hysteresis
FEATURES DESCRIPTION Dual Voltage Detector With Adjustable
Hysteresis 3.3-V/Adjustable and
2-V/Adjustable
Assured Reset at VDD = 0.8 V
Supply Current: 3 ВµA Typical at VDD = 3.3 V
Independent Open-Drain Reset Outputs
Temperature Range: -40В°C to +85В°C
6-Pin SOT-23 Package The TPS3806 integrates two independent voltage
detectors for battery voltage monitoring. During
power-on, RESET and RSTSENSE are asserted
when supply voltage VDD or the voltage at LSENSE
input become higher than 0.8 V. Thereafter, the
supervisory circuit monitors VDD and LSENSE, keeping RESET and RSTSENSE active as long as VDD
and LSENSE remain below the threshold voltage, VIT.
As soon as VDD or LSENSE rise above the threshold
voltage VIT, RESET or RSTSENSE is deasserted,
respectively. The TPS3806 device has a fixed-sense
threshold voltage VIT set by an internal voltage divider
at VDD and an adjustable second-LSENSE input. In
addition, an upper voltage threshold can be set at …