TPS3700 Datasheet, PDF (1/19 Pages) Texas Instruments – Window Comparator for Over- and Undervoltage Detection

TPS3700
www.ti.com
SBVS187B – FEBRUARY 2012 – REVISED APRIL 2012
Window Comparator for Over- and Undervoltage Detection
Check for Samples: TPS3700
FEATURES
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•2 Wide Supply Voltage Range: 1.8 V to 18 V
• Adjustable Threshold: Down to 400 mV
• Open-Drain Outputs for Over- and
Undervoltage Detection
• Low Quiescent Current: 5.5 µA (typ)
• High Threshold Accuracy:
– 1.0% Over Temperature
– 0.25% (typ)
• Internal Hysteresis: 5.5 mV (typ)
• Temperature Range: –40°C to +125°C
• Available in a ThinSOT23-6 Package
APPLICATIONS
• Industrial Control Systems
• Automotive Systems
• Embedded Computing Modules
• DSP, Microcontroller, or Microprocessor
Applications
• Notebook and Desktop Computers
• Portable- and Battery-Powered Products
• FPGA and ASIC Applications
DESCRIPTION
The TPS3700 wide-supply voltage window
comparator operates over a 1.8-V to 18-V range. The
device has two high-accuracy comparators with an
internal 400-mV reference and two open-drain
outputs rated to 18 V for over- and undervoltage
detection. The TPS3700 can be used as a window
comparator or as two independent voltage monitors;
the monitored voltage can be set with the use of
external resistors.
OUTA is driven low when the voltage at INA+ drops
below (V_ITP – V_HYS), and goes high when the voltage
returns above the respective threshold (V_ITP). OUTB
is driven low when the voltage at INB– rises above
V_ITP, and goes high when the voltage drops below the
respective threshold (V_ITP – V_HYS). Both comparators
in the TPS3700 include built-in hysteresis for filtering
to reject brief glitches, thereby ensuring stable output
operation without false triggering.
The TPS3700 is available in a ThinSOT23-6 package
and is specified over the junction temperature range
of –40°C to +125°C.
V_MON
R₁
1.8 V to 18 V
VDD
0.1 mF
RP₁
INA+
V_ITP
INA+
OUTA
R₂
Device
INB-
OUTB
R₃
GND
RP₂
To a reset
or enable
input of
the system.
INB
V_ITP
DDC PACKAGE
ThinSOT23-6
(TOP VIEW)
Figure 1. TPS3700 Typical Application
OUTA 1
GND 2
INA+ 3
6 OUTB
5 VDD
4 INB-
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2
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 © 2012, Texas Instruments Incorporated