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

TPS3808-Q1 (ACTIVE)

Automotive Catalog Low Quiescent Current Programmable-Delay Supervisory Circuit

 

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 Compare all products in Supervisor and Reset IC

 
Threshold Voltage 1 (Typ) (V)
# 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 TPS3890-Q1
Adjustable
1.12
1.16
1.4
1.67
2.79
3.07
4.65   
Adjustable
1.15
1.44
1.73
1.9
2.4
2.89
3.17   
1    1   
6.5    5.5   
1.8    1.5   
Active-low
Open-drain   
Active-low
Open-drain   
Programmable    Programmable   
Active Low Enable
Manual Reset   
Active Low Enable
Manual Reset   
Automotive    Automotive   
-40 to 125    -40 to 125   
None    None   

Other qualified versions of TPS3808-Q1

Version Part Number Definition
Enhanced Product TPS3808-EP Supports Defense, Aerospace and Medical Applications
Catalog TPS3808 TI's standard catalog product