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TPS37

更新时间： 2024-11-21 02:52:23
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德州仪器 - TI /
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TPS37 Wide VIN 65 V Dual Channel Overvoltage & Undervoltage (OV & UV) Detector with Programmable Sense and Reset Delay Function

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TPS37 数据手册

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TPS37  
SNVSBJ1D – OCTOBER 2020 – REVISED DECEMBER 2021  
TPS37 Wide VIN 65 V Dual Channel Overvoltage & Undervoltage (OV & UV) Detector  
with Programmable Sense and Reset Delay Function  
1 Features  
3 Description  
•
•
•
•
Wide supply voltage range: 2.7 V to 65 V  
SENSE and RESET pins are 65 V graded  
Low quiescent current: 1 µA (typical)  
Flexible and wide voltage threshold options  
Table 13-1  
– 2.7 V to 36 V (1.5% maximum accuracy)  
– 800 mV option (1% maximum accuracy)  
Built-in hysteresis (VHYS)  
– Percentage options: 2% to 13% (1% steps)  
– Fixed options: VTH < 8 V = 0.5 V, 1 V, 1.5 V,  
2 V, 2.5 V  
Programmable reset time delay  
– 10 nF = 12.8 ms, 10 μF = 12.8 s  
Programmable sense time delay  
– 10 nF = 1.28 ms, 10 μF = 1.28 s  
Manual Reset (MR) feature  
The TPS37 is a family of wide input range and  
low quiescent current window supervisors for fast  
detection of overvoltage (OV) and undervoltage  
(UV) conditions. Each device includes a precision  
internal reference, two independent and configurable  
voltage comparators and integrated resistor dividers.  
The TPS37 can be connected directly to and  
monitor 12 V / 24 V supply rails in a variety of  
industrial applications including factory automation,  
motor drives, building automation and others. Built-in  
hysteresis on the SENSE pins prevents false reset  
signals when monitoring a supply voltage rail.  
•
•
•
The separate VDD and SENSE pins allow  
redundancy sought by high-reliability systems.  
SENSE is decoupled from VDD and can monitor  
higher and lower voltages than VDD. Optional use  
of external resistors are supported by the high  
impedance input of the SENSE pins. CTSx and CTRx  
pins allow delay adjustability on the rising and falling  
edges of the RESET signals. Also, CTSx functions  
as a debouncer by ignoring voltage glitches on the  
monitored voltage rails; CTRx operates as a manual  
reset (MR) that can be used to force a system reset.  
•
•
•
Output reset latching feature  
Output topology: Open-Drain or Push-Pull  
2 Applications  
•
•
•
•
•
•
Analog input module  
CPU (PLC controller)  
Servo drive control module  
Servo drive power stage module  
Servo drive functional safety module  
HVAC valve and actuator control  
TPS37 is available in a WSON or SOT-23 package.  
The central pad is non-conductive to increase the  
creepage between VDD and GND per guidelines in  
IEC60664. TPS37 operates over –40°C to +125°C TA.  
Device Information  
PART NUMBER  
TPS37  
PACKAGE (1)  
WSON (10) (DSK)  
SOT-23 (14) (DYY) (2)  
BODY SIZE (NOM)  
2.5 mm × 2.5 mm  
4.1 mm × 1.9 mm  
TPS37  
(1) For package details, see the mechanical drawing addendum  
at the end of the data sheet.  
(2) Product Preview  
0.95  
0.90  
0.85  
0.80  
0.75  
0.70  
0.65  
Power Switch  
or  
DC/DC  
EN  
24V  
VDD  
VDD  
SENSE1  
SENSE2  
RESET1  
RESET2  
MCU  
TPS37  
LDO  
0.60  
-40oC  
25oC  
0.55  
0.50  
125oC  
SENSE1 = Overvoltage monitor  
SENSE2 = Undervoltage monitor  
0
5
10 15 20 25 30 35 40 45 50 55 60 65  
Supply Voltage (V)  
Typical IDD vs VDD  
Typical Application Circuit  
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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