TPS3890-Q1 (ACTIVE)

Automotive Low-Quiescent-Current 1% Accurate Supervisor With Programmable Delay

 

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
  • 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 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)
TPS3890-Q1 TPS3808-Q1
Adjustable
1.15
1.44
1.73
2.4
2.89
3.17
4.44   
Adjustable
1.12
1.16
1.4
1.67
2.79
3.07
4.65   
1    1   
5.5    6.5   
1.5    1.8   
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 TPS3890-Q1

Version Part Number Definition
Catalog TPS3890 TI's standard catalog product