TPS3779_15 Datasheet, PDF (1/28 Pages) Texas Instruments – Dual-Channel, Low-Power, High-Accuracy Voltage Detectors

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TPS3779, TPS3780
SBVS250 – APRIL 2015
TPS37xx Dual-Channel, Low-Power, High-Accuracy Voltage Detectors
1 Features
•1 Two-Channel Detectors in Small Packages
• High-Accuracy Threshold and Hysteresis: 1.0%
• Low Quiescent Current: 2 µA (typ)
• Adjustable Detection Voltage Down to 1.2 V
• Multiple Hysteresis Options:
– 0.5%, 1%, 5%, and 10%
• Temperature Range: –40°C to 125°C
• Push-Pull (TPS3779) and Open-Drain (TPS3780)
Output Options
• Available in µSON and SOT23 Packages
2 Applications
• DSP, Microcontroller, and Microprocessor
Applications
• Portable Medical Devices
• Building Automation
• Set-Top Boxes
• Solid-State Drives
• Notebook and Desktop Computers
• Portable and Battery-Powered Products
• Power-Supply Sequencing Applications
3 Description
The TPS3779 and TPS3780 are a family of high-
accuracy, two-channel voltage detectors with low-
power and small solution size. The SENSE1 and
SENSE2 inputs include hysteresis to reject brief
glitches, ensuring stable output operation without
false triggering. This family offers different factory-set
hysteresis options of 0.5%, 1%, 5%, or 10%.
The TPS3779 and TPS3780 have adjustable SENSE
inputs that can be configured by an external resistor
divider. When the voltage at the SENSE1 or SENSE2
input goes below the falling threshold, OUT1 or OUT2
is driven low, respectively. When SENSE1 or
SENSE2 rises above the rising threshold, OUT1 or
OUT2 goes high, respectively.
The devices have a very low quiescent current of
2 µA (typical) and provide a precise, space-conscious
solution for voltage detection suitable for low-power
system-monitoring and portable applications. The
TPS3779 and TPS3780 operate from 1.5 V to 6.5 V,
over the –40°C to 125°C temperature range.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS37xx
µSON (6)
SOT23 (6)
1.45 mm × 1.00 mm
2.92 mm × 1.30 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Sense Threshold (V_IT+) Deviation versus
Temperature
0.4
Sense 1 VDD = 1.5 V
0.32
Sense 1 VDD = 6.5 V
0.24
Sense 2 VDD = 1.5 V
Sense 2 VDD = 6.5 V
0.16
0.08
0
-0.08
-0.16
-0.24
-0.32
-0.4
-40 -20 0 20 40 60 80 100 120
Temperature (GC)
VMON2
R3
R4
Typical Schematic
VDD = 1.5 V to 6.5 V
0.1 F
VMON1
R1
VDD
SENSE1
OUT1
R2
Device
SEN SE 2
OUT2
TPS378 0 Onl y
VPUL LU P
RPU1
RPU1
GND
To a re set or enable
inpu t of the syste m
To a re set or enable
inpu t of the syste m
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.