TPS3890-Q1 Automotive low-quiescent-current 1% accurate supervisor with programmable delay | TI.com

TPS3890-Q1
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Automotive low-quiescent-current 1% accurate supervisor with programmable delay

Automotive low-quiescent-current 1% accurate supervisor with programmable delay - TPS3890-Q1
Datasheet
TPS3890-Q1 Low Quiescent Current, 1% Accurate Supervisor with Programmable Delay datasheet (Rev. B)
 

Description

The TPS3890-Q1 is a precision voltage supervisor with low-quiescent current that monitors system voltages as low as 1.15 V, asserting an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin drops to a logic low. The RESET output remains low for the user-adjustable delay time after the SENSE voltage and manual reset (MR) return above the respective thresholds. The TPS3890-Q1 family uses a precision reference to achieve 1% threshold accuracy. The reset delay time can be user-adjusted between 25 µs and 30 s by connecting the CT pin to an external capacitor. The TPS3890-Q1 has a very low quiescent current of 2.1 µA and is available in a small 1.5-mm × 1.5-mm package, making the device well-suited for battery-powered and space-constrained applications. The device is fully specified over a temperature range of –40°C to +125°C (TJ).

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: -40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Power-On-Reset (POR) Generator with Adjustable Delay Time: 25 µs to 30 s
  • Very Low Supply Current: 2.1 µA (Typical)
  • High Threshold Accuracy: 1% (max)
  • Precision Hysteresis
  • Fixed and Adjustable Threshold Voltages:
    • Fixed Thresholds for Standard Rails:
      1.2 V to 5 V
    • Adjustable Down to 1.15 V
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –40°C to +125°C
  • Package: 1.5-mm × 1.5-mm WSON

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Parametrics

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Part number Order Threshold voltage 1 (Typ) (V) Number of supplies monitored VCC (Max) (V) VCC (Min) (V) Output driver type/reset output Time delay (ms) Features Rating Operating temperature range (C) TI functional safety category Watchdog timer WDI (sec)
TPS3890-Q1 Order now Adjustable
1.15
1.44
1.73
2.4
2.89
2.93
3.066
3.17
4.4
4.65
4.8    		 1     5.5     1.5     Active-low
Open-drain    		 Programmable     Active-low enable
Manual reset    		 Automotive     -40 to 125     Functional safety-capable     None    
TPS3703-Q1 Order now 0.8
0.9
1.1
1.2
1.25
1.8
2.8
2.9
3.3
5    		 1     5.5     1.7     Active-low
Open-drain    		 Programmable
0.05
1
5
10
20
100
200    		 Undervoltage and overvoltage monitor
Undervoltage only monitoring
Latching
Manual reset
Safety documentation    		 Automotive     -40 to 125     Functional safety-capable     None    
TPS3808 Order now Adjustable
0.84
1.12
1.16
1.4
1.67
1.77
2.33
2.79
3.07
4.65    		 1     6.5     1.8     Active-low
Open-drain    		 Programmable     Active-low enable
Manual reset    		 Catalog     -40 to 125       None    
TPS3808-Q1 Order now Adjustable
1.12
1.16
1.4
1.67
2.79
3.07
4.65    		 1     6.5     1.8     Active-low
Open-drain    		 Programmable     Active-low enable
Manual reset    		 Automotive     -40 to 125     Functional safety-capable     None    
TPS3836-Q1 Order now 2.25
2.64
2.93    		 1     6     1.6     Active-low
Push-pull    		 Programmable     Active-low enable
Manual reset    		 Automotive     -40 to 125       None    
TPS3838-Q1 Order now 1.71
2.25
2.64
2.93    		 1     6     1.6     Active-low
Open-drain    		 Programmable     Active-low enable
Manual reset    		 Automotive     -40 to 125       None    
TPS3840-Q1 Order now Trimmable
1.6
2.5
2.7
2.9
4.2    		 1     10     1.5     Active-high
Active-low
Open-drain
Push-pull    		 Programmable     Manual reset     Automotive     -40 to 125     Functional safety-capable     None    
TPS3870-Q1 Order now 0.8
3.3    		 1     5.5     1.7     Active-low
Open-drain    		 Programmable
0.05
1
5
10
20
100
200    		 Overvoltage monitor
Latching
Manual reset