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 µA Typical at VDD = 3.3 V
Independent Open-Drain Reset Outputs
Temperature Range: -40°C to +85°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
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.
TPS3806
DBV PACKAGE
(TOP VIEW)
RSTSENSE
1
6
HSENSE
GND
2
5
LSENSE
RESET
3
4
VDD
R4
VDD
R1
3.6 V
Li-lon
Cell
R5
RESET
TPS3806I33
LSENSE
RSTSENSE
HSENSE
GND
R2
R3
Typical Operating Circuit
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2001–2004, Texas Instruments Incorporated
TPS3806J20
TPS3806I33
www.ti.com
SLVS393A – JULY 2001 – REVISED NOVEMBER 2004
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated
circuits be handled with appropriate precautions. Failure to observe proper handling and installation
procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision
integrated circuits may be more susceptible to damage because very small parametric changes could
cause the device not to meet its published specifications.
ORDERING INFORMATION (1)
TA
-40°C to +85°C
(1)
(2)
(3)
THRESHOLD VOLTAGE
DEVICE NAME
VDD
SENSE
MARKING
TPS3806J20DBVR (2)
TPS3806J20DBVT (3)
1.8 V
1.207 V
PGQI
TPS3806I33DBVR (2)
TPS3806I33DBVT (3)
3V
1.207 V
PGPI
For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet or refer
to our web site at www.ti.com.
The DBVR passive indicates tape and reel containing 3000 parts.
The DBVT passive indicates tape and reel containing 250 parts.
TPS380
6
I
33
DBV R
Reel
Package
Nominal Supply Voltage
Nominal Threshold Voltage
Functionality
Family
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted) (1)
Supply voltage, VDD
TPS3806J20, TPS3806I33
UNIT
7
V
(2)
All other pins (2)
Maximum low-output current, IOL
Maximum high-output current, IOH
-0.3 to 7
V
5
mA
-5
mA
Input clamp current, IIK (VI < 0 or VI > VDD)
±10
mA
Output clamp current, IOK (VO < 0 or VO > VDD)
±10
mA
Continuous total power dissipation
See Dissipation Rating Table
Operating free-air temperature range, TA
-40 to +85
°C
Storage temperature range, Tstg
-65 to +150
°C
+260
°C
Soldering temperature
(1)
(2)
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltage values are with respect to GND. For reliable operation, the device must not be continuously operated at 7 V for more than
t = 1000 h.
DISSIPATION RATING TABLE
2
PACKAGE
TA < 25°C
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
DBV
437 mW
3.5 mW/°C
280 mW
227 mW
TPS3806J20
TPS3806I33
www.ti.com
SLVS393A – JULY 2001 – REVISED NOVEMBER 2004
RECOMMENDED OPERATING CONDITIONS
Supply voltage, VDD
Input voltage, VI
Operating free-air temperature range, TA
MIN
MAX
UNIT
1.3
6
V
0
VDD + 0.3
V
-40
+85
°C
ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VDD = 1.5 V, IOL = 1 mA
VOL
Low-level output voltage
VDD = 3.3 V, IOL = 2 mA
0.3
V
0.2
V
VDD = 6 V, IOL = 3 mA
VDD ≥ 0.8 V, IOL = 50 µA
Power-up reset voltage (1)
LSENSE
TPS3806J20
VIT
Negative-going
input threshold voltage (2)
TA = +25°C
II
Input current
IOH
High-level output current
IDD
Supply current
Ci
Input capacitance
(1)
(2)
1.216
1.787
1.8
1.813
2.978
3.0
3.022
LSENSE
1.188
1.207
1.226
1.772
1.8
1.828
TPS3806J20
TA = 0°C to +70°C
TPS3806I33
2.952
3.0
3.048
LSENSE
1.183
1.207
1.231
1.764
1.8
1.836
2.94
3.0
3.06
TA = -40°C to +85°C
TPS3806I33
Hysteresis
1.207
TPS3806I33
TPS3806J20
Vhys
1.198
1.2 V < VIT < 2.5 V
60
2.5 V < VIT < 3.5 V
90
LSENSE, HSENSE
-25
VDD = VIT + 0.2 V, VOH = VDD
V
V
V
mV
25
nA
300
nA
VDD = 3.3 V, Output unconnected
3
5
VDD = 6 V, Output unconnected
4
6
VI = 0 V to VDD
1
µA
pF
The lowest supply voltage at which RESET becomes active. tr,VDD ≥ 15 µs/V
To ensure best stability of the threshold voltage, place a bypass capacitor (ceramic, 0.1 µF) near the supply terminals.
SWITCHING CHARACTERISTICS
at RL = 1 MΩ, CL = 50 pF, TA = -40°C to +85°C
PARAMETER
TEST CONDITIONS
tPHL
Propagation (delay) time,
high-to-low-level output
VDD to RESET delay
tPLH
Propagation (delay) time,
low-to-high-level output
VDD to RESET delay
LSENSE to RSTSENSE delay
MIN
VIH = 1.05 x VIT,
VIL = 0.95 x VIT
HSENSE to RSTSENSE delay
TYP
MAX
UNIT
5
100
µs
5
100
µs
TIMING REQUIREMENTS
at RL = 1 MΩ, CL = 50 pF, TA = -40°C to +85°C
PARAMETER
tw
Pulse width
TEST CONDITIONS
At VDD
At SENSE
VIH = 1.05 x VIT, VIL = 0.95 x VIT
MIN
5.5
TYP
MAX
UNIT
µs
3
TPS3806J20
TPS3806I33
www.ti.com
SLVS393A – JULY 2001 – REVISED NOVEMBER 2004
VDD
VIT(HSENSE)
VIT(LSENSE)
VIT,VDD+Vhys
VIT(VDD)
0.8 V
RSTSENSE
RESET
= Undefined
Table 1. TERMINAL FUNCTIONS
TERMINAL
NAME
NO.
I/O
DESCRIPTION
GND
2
I
Ground
HSENSE
6
I
Adjustable hysteresis input
LSENSE
5
I
Adjustable sense input
RESET
3
O
Active-low open drain reset output (from VDD)
RSTSENSE
1
O
Active-low open-drain reset output (from LSENSE)
VDD
4
I
Input supply voltage and fixed sense input
FUNCTION/TRUTH TABLE
TPS3806
VDD > VIT
4
RESET
LSENSE > VIT
RSTSENSE
0
L
0
L
1
H
1
H
TPS3806J20
TPS3806I33
www.ti.com
SLVS393A – JULY 2001 – REVISED NOVEMBER 2004
FUNCTIONAL BLOCK DIAGRAM
TPS3806
LSENSE
_
HSENSE
RSTSENSE
+
R1
_
VDD
R2
RESET
+
GND
Reference
Voltage of
1.207 V
Detailed Description
Operation
The TPS3806 is used for monitoring battery voltage and asserting RESET when a battery gets discharged below
a certain threshold voltage. The battery voltage is monitored by a comparator via an external resistor divider.
When the voltage at the LSENSE input drops below the internal reference voltage the RSTSENSE output pulls
low. The output remains low until the battery is replaced, or recharged above a second higher trip-point, set at
HSENSE. A second voltage can be monitored at VDD. The independent RESET output pulls low when the
voltage at VDD drops below the fixed threshold voltage. Because the TPS3806 outputs are open-drain MOSFETs,
most applications may require a pull-up resistor.
Programming the Threshold Voltage Levels
The low-voltage threshold at LSENSE is calculated according to Equation 1:
R1 R2 R3
V
V
(LSENSE)
ref
R2 R3
(1)
where Vref = 1.207 V
The high-voltage threshold at HSENSE is calculated as shown in Equation 2:
R1 R2 R3
V
V
(HSENSE)
ref
R3
(2)
where Vref = 1.207 V
To minimize battery current draw it is recommended to use 1-MΩ as the total resistor value R(tot), with
R(tot) = R1 + R2 + R3.
5
TPS3806J20
TPS3806I33
www.ti.com
SLVS393A – JULY 2001 – REVISED NOVEMBER 2004
TYPICAL CHARACTERISTICS
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
6
1.60
V(HSENSE) < V(LSENSE)
RESET = Open
RSTSENSE = Open
4
3
85°C
25°C
2
0°C
−40°C
1
VDD = 1.5 V
V(SENSE) = Low
1.40
VOL − Low-Level Output Voltage − V
I DD − Supply Current − µ A
5
1.20
85°C
1.00
25°C
0.80
0°C
0.60
−40°C
0.40
0.20
0
0
0.5
1
1.5
2 2.5
3 3.5
4
4.5 5
5.5
0
6
0
1
VDD − Supply Voltage − V
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
5
3.5
0.40
85°C
0.35
25°C
0.30
0°C
0.25
VDD = 6 V
V(SENSE) = Low
3
VOL − Low-Level Output Voltage − V
VOL − Low-Level Output Voltage − V
4
Figure 2.
VDD = 1.5 V
V(SENSE) = Low
0.45
−40°C
0.20
0.15
0.10
0.05
85°C
2.5
25°C
2
0°C
−40°C
1.5
1
0.5
Expanded View
0
0.5
1
1.5
2
2.5
IOL − Low-Level Output Current − mA
Figure 3.
6
3
Figure 1.
0.50
0
2
IOL − Low-Level Output Current − mA
3
0
0
5
10
15
20
25
30
35
40
IOL − Low-Level Output Current − mA
Figure 4.
45
50
TPS3806J20
TPS3806I33
www.ti.com
SLVS393A – JULY 2001 – REVISED NOVEMBER 2004
TYPICAL CHARACTERISTICS (continued)
NORMALIZED INPUT THRESHOLD VOLTAGE
vs
FREE-AIR TEMPERATURE AT VDD
1
VDD = 6 V
V(SENSE) = Low
VOL − Low-Level Output Voltage − V
0.9
85°C
0.8
25°C
0.7
0°C
0.6
−40°C
0.5
0.4
0.3
0.2
Expanded View
0.1
0
0
2
4
6
8
10
12
14
16
18
20
IOL − Low-Level Output Current − mA
VIT − Normalized Input Threshold Voltage VIT(TA) / VIT(25°C)
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
1.003
1.002
1.001
1
0.999
0.998
0.997
0.996
0.995
−40
−20
0
20
40
60
80
TA − Free-Air Temperature at VDD − °C
Figure 6.
MINIMUM PULSE DURATION AT VDD
vs
VDD THRESHOLD OVERDRIVE VOLTAGE
MINIMUM PULSE DURATION AT LSENSE
vs
LSENSE THRESHOLD OVERDRIVE VOLTAGE
10
tw − Minimum Pulse Duration at LSENSE − µs
tw − Minimum Pulse Duration at VDD − µs
RESET = 100 kΩ to VDD
1.004
Figure 5.
10
9
8
7
6
5
4
3
2
1
0
1.005
0
0.1
0.2
0.3
0.4 0.5 0.6
0.7 0.8 0.9
VDD − Threshold Overdrive Voltage − V
Figure 7.
1
9
8
7
6
5
4
3
2
1
0
0
0.1
0.2 0.3 0.4
0.5 0.6
0.7 0.8 0.9
1
LSENSE − Threshold Overdrive Voltage − V
Figure 8.
7
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
TPS3806I33DBVR
ACTIVE
SOT-23
DBV
6
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
PGPI
TPS3806I33DBVRG4
ACTIVE
SOT-23
DBV
6
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
PGPI
TPS3806I33DBVT
ACTIVE
SOT-23
DBV
6
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
PGPI
TPS3806J20DBVR
ACTIVE
SOT-23
DBV
6
3000
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
PGQI
TPS3806J20DBVT
ACTIVE
SOT-23
DBV
6
250
RoHS & Green
NIPDAU
Level-1-260C-UNLIM
-40 to 85
PGQI
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of