TPS3808-Q1 Automotive Catalog Low Quiescent Current Programmable-Delay Supervisory Circuit | TI.com

TPS3808-Q1 (ACTIVE) Automotive Catalog Low Quiescent Current Programmable-Delay Supervisory Circuit

 

Recommended alternative parts

  • TPS3840-Q1  -  This device offers more fixed voltage threshold options, and has a wide 10-V input voltage, low IQ (350 nA) and 1% threshold accuracy.
  • TPS3890-Q1  -  A higher accuracy (1% maximum) device in a small package (1.5-mm by 1.5-mm WSON).

Description

The TPS3808Gxx-Q1 microprocessor supervisory circuits monitor system voltages from 0.4 V to 5 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 MR return above their thresholds.

The TPS3808Gxx-Q1 device uses a precision reference to achieve 0.5% threshold accuracy for VIT ≤ 3.3 V. The reset delay time can be set to 20 ms by disconnecting the CT pin, 300 ms by connecting the CT pin to VDD using a resistor, or can be user-adjusted from 1.25 ms to 10 s by connecting the CT pin to an external capacitor. The TPS3808Gxx-Q1 has a very low typical quiescent current of 2.4 µA, so it is well suited for battery-powered applications. The device is available in a small SOT-23 package (one option available in WSON) and is fully specified over a temperature range of –40°C to +125°C (TJ).

For more information about TI’s voltage supervisor portfolio, visit the Supervisor and Reset IC Overview Page page.

Features

  • Qualified for Automotive Applications
  • Power-On Reset Generator With Adjustable Delay Time: 1.25 ms to 10 s
  • Very Low Quiescent Current: 2.4 µA Typical
  • High Threshold Accuracy: 0.5% Typical
  • Fixed Threshold Voltages for Standard Voltage Rails From 1.2 V to 5 V and Adjustable Voltage Down to 0.4 V Are Available
  • Manual Reset (MR) Input
  • Open-Drain RESET Output
  • Temperature Range: –40°C to +125°C
  • Small SOT-23 Package and WSON Package (TPS3808G01QDRVRQ1 only)

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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) Watchdog timer WDI (sec)
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     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    
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     None    
TPS3890 Order now Adjustable
1.15
1.44
1.73
2.4
2.89
3.17    
1     5.5     1.5     Active-low
Open-drain    
Programmable     Active-low enable
Manual reset    
Catalog     -40 to 125     None    
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     None