TPS3806J20, TPS3806I33
DUAL VOLTAGE DETECTOR WITH ADJUSTABLE HYSTERESIS
SLVS393 – JULY 2001
TPS3806
DBV PACKAGE
(TOP VIEW)
D
Dual Voltage Detector With Adjustable
Hysteresis 3.3-V/Adjustable and
2-V/Adjustable
D
D
D
D
D
Assured Reset at V
= 0.8 V
1
6
HSENSE
LSENSE
RSTSENSE
GND
DD
Supply Current: 3 µA Typical at V
= 3.3 V
DD
2
3
5
4
Independent Open-Drain Reset Outputs
Temperature Range . . . –40°C to 85°C
Six-Pin SOT-23 Package
V
RESET
DD
description
typical operating circuit
The TPS3806 integrates two independent voltage
detectors for battery voltage monitoring. During
power-on, RESET and RSTSENSE are asserted
R4
R5
when supply voltage V
or the voltage at
DD
LSENSE input become higher than 0.8 V.
Thereafter, the supervisory circuit monitors V
V
RESET
TPS3806I33
LSENSE
DD
DD
R1
R2
and LSENSE, keeping RESET and RSTSENSE
active as long as V and LSENSE remain below
RSTSENSE
DD
3.6 V
Li-lon
Cell
the threshold voltage V . As soon as V
or
IT
DD
LSENSE rise above the threshold voltage V ,
RESET or RSTSENSE is deasserted,
IT
HSENSE
GND
respectively. The TPS3806 device has
a
R3
fixed-sense threshold voltage V set by an
IT
internal voltage divider at V
and an adjustable
DD
second-LSENSE input. In addition, an upper
voltage threshold can be set at HSENSE to allow
a wide adjustable hysteresis window.
The devices are available in a 6-pin SOT-23 package. The TPS3806 device is characterized for operation over
a temperature range of –40°C to 85°C.
PACKAGE INFORMATION
THRESHOLD VOLTAGE
T
DEVICE NAME
MARKING
A
V
SENSE
1.207 V
1.207 V
DD
†
‡
TPS3806J20DBVR
TPS3806J20DBVT
1.8 V
3 V
PGQI
PGPI
†
‡
TPS3806I33DBVT
TPS3806I33DBVR
†
‡
The DBVR passive indicates tape and reel containing 3000 parts.
The DBVT passive indicates tape and reel containing 250 parts.
ordering information
TPS380
6
I
33 DBV R
Reel
Package
Nominal Supply Voltage
Nominal Threshold Voltage
Functionality
Family
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2001, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265