Texas Instruments TPS3703 Manual

TPS3703 High Accuracy Overvoltage and Undervoltage Reset IC With Time Delay and
1 Features
• Input voltage range: 1.7 V to 5.5 V
1
• Undervoltage lockout (UVLO): 1.7 V
• Low quiescent current: 7 µA (Max)
• High threshold accuracy:
– ± 0.25% (typical)
– ± 0.7% (–40°C to +125°C)
• Fixed window threshold levels
– 50-mV steps from 500 mV to 1.3 V
– 1.5 V, 1.8 V, 2.5 V, 2.8 V, 2.9 V 3.3 V, 5 V
– Available in UV threshold only
– Window tolerance available from ±3% to ±7%
• User adjustable voltage threshold levels
• Internal glitch immunity and hysteresis
• Fixed time delay options: 50 µs, 1 ms, 5 ms, 10
ms, 20 ms, 100 ms, 200 ms
• Programmable time delay option with a single
external capacitor
• Open-drain active low UV and OV monitor
• RESET voltage latching output mode
2 Applications
• Motor drives
• Factory automation and control
• Home theater and entertainment
• Grid infrastructure
• Data center and enterprise computing
Integrated Overvoltage and Undervoltage
Detection
OV Threshold
Monitor Voltage
UV Threshold
TPS3703
1 SENSE
VDD GND
2
3
CT RESET
Optional
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.
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3 Description
The TPS3703 device is an integrated overvoltage
(OV) and undervoltage (UV) monitor or reset IC in
industry's smallest 6-pin DSE package. This highly
accurate voltage supervisor is ideal for systems that
operate on low-voltage supply rails and have narrow
margin supply tolerances. Low threshold hysteresis
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 TPS3703 does not require any external resistors
for setting overvoltage and undervoltage reset
thresholds, which further optimizes overall accuracy,
cost, solution size, and improves reliability for safety
systems. The Capacitor Time (CT) pin is used to
select between the two available reset time delays
designed into each device and also to adjust the
reset time delay by connecting a capacitor. A
separate SENSE input pin and VDD pin allow for the
redundancy sought by high-reliability systems.
This device has a low typical quiescent current
specification of 4.5 µA (typical). The TPS3703 is
suitable for industrial applications and applications
that require accurate undervoltage and overvoltage
monitoring.
Device Information
PART NUMBER
TPS3703
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Overvoltage Accuracy Distribution
35
30
25
20
15
10
5
0
-0.4 -0.3 -0.2
Support &
Community
SBVS249A – MAY 2020 – REVISED JUNE 2020
(1)
PACKAGE BODY SIZE (NOM)
WSON (6) 1.50 mm × 1.50 mm
-0.1 0 0.1 0.2 0.3
V Accuracy (%)
IT+(OV)
TPS3703
0.4
D004