TPS3702 Datasheet, PDF (1/28 Pages) Texas Instruments – High-Accuracy, Overvoltage and Undervoltage Monitor

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS3702
SBVS251 – JANUARY 2015
TPS3702 High-Accuracy, Overvoltage and Undervoltage Monitor
1 Features
•1 Input Voltage Range: 2 V to 18 V
• High Threshold Accuracy:
– 0.25% (typ)
– 0.9% (–40°C to 125°C)
• Fixed Window Thresholds Optimized for Nominal
Rails Between 1 V and 5 V
• Open-Drain Outputs for Overvoltage and
Undervoltage Indication
• Internal Glitch Immunity
• Threshold Adjust Using the SET Pin
• Low Quiescent Current: 7 µA (typ)
• Internal Threshold Hysteresis: 0.55%, 1.0%
• SOT-6 Package
2 Applications
• FPGA and ASIC Applications
• DSP-Based Systems
• Industrial Control Systems
• Factory Automation
• Personal Electronics
• Building Automation
• Motor Drives
Undervoltage Accuracy vs Temperature
0.5
Unit 1
Unit 2
Unit 3
0.4
Unit 4
Unit 5
Avg
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
±40 ±25 ±10 5
20 35 50 65 80 95 110 125 140
Temperature (°C)
Overvoltage Accuracy vs Temperature
0.5
Unit 1
0.4
Unit 4
Unit 2
Unit 5
Unit 3
Avg
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
±40 ±25 ±10 5
20 35 50 65 80 95 110 125 140
Temperature (°C)
C001
3 Description
The TPS3702 is an integrated overvoltage and
undervoltage window detector in a small SOT-6
package. This highly accuracy voltage monitor is
ideal for systems that operate on low-voltage supply
rails and have narrow margin supply tolerances. Low
threshold hysteresis options of 0.55% and 1.0%
prevent false reset signals when the monitored
voltage supply is in its normal range of operation.
Internal glitch immunity and noise filters further
eliminate false resets resulting from erroneous
signals.
The TPS3702 does not require any external resistors
for setting overvoltage and undervoltage reset
thresholds, which further increases overall accuracy
and reduces solution size and cost. The SET pin is
used to select between the two available threshold
voltages designed into each device. A separate
SENSE input pin and VDD pin allow for the
redundancy sought by safety-critical and high-
reliability systems. This device also features
independent reset outputs for the OV and UV pins; as
a result of the open-drain configuration, UV and OV
can be tied together.
This device has a low typical quiescent current
specification of 7 µA and is qualified for use over the
industrial temperature range of –40°C to 125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS3702
SOT (6)
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application Circuit
Nominal Monitored Rail
Up to 5 V
Up to
18 V
Up to
6.5 V
TPS3702 R2
SENSE UV
VDD
SET
GND
OV
R1
VDD
RST
µ_P
NMI
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.