TPS3896 Single-Channel Ultra-Small Adjustable Supervisory Circuit With Active-Low Push-Pull Output | TI.com

TPS3896 (ACTIVE)

Single-Channel Ultra-Small Adjustable Supervisory Circuit With Active-Low Push-Pull Output

 

Recommended alternative parts

  • TPS3890  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   TPS3890 has fixed threshold options and lower quiescent current.

Description

The TPS3895, TPS3896, TPS3897, and TPS3898 devices (TPS389x) are a family of very small supervisory circuits that monitor voltages greater than 500 mV with a 0.25% (typical) threshold accuracy and offer adjustable delay time using external capacitors. The TPS389x family also has a logic enable pin (ENABLE or ENABLE) to power on and off the output. With the TPS3895, for example, when the input voltage pin (SENSE) rises above the threshold, and the ENABLE pin is high, then the output pin (SENSE_OUT) goes high after the capacitor-adjustable delay time. When SENSE falls below the threshold or ENABLE is low, then SENSE_OUT goes low.

For TPS389xA versions, both SENSE and ENABLE have a capacitor-adjustable delay. The output asserts after this capacitor-adjustable delay when both SENSE and ENABLE inputs are good. The TPS389xP devices have a small, 0.2-µs propagation delay from when the enable pin asserts to when the output pin asserts, provided SENSE is above the threshold.

All devices operate from 1.7 V to 6.5 V and have a typical quiescent current of 6 µA with an open-drain output rated at 18 V. The TPS389x is available in an ultra-small USON package and is fully specified over the temperature range of TJ = –40°C to 125°C.

Features

  • Very Small USON (1.45 mm × 1.00 mm) Package
  • Adjustable Threshold Down to 500 mV
  • Threshold Accuracy: 1% Over Temperature
  • Capacitor-Adjustable Delay Time
  • Low Quiescent Current: 6 µA (Typical)
  • External Enable Input
  • Open-Drain (Rated at 18 V) and Push-Pull Output
    Options
  • Temperature Range: –40°C to 125°C
  • Pin-for-Pin Compatible With MAX6895/6/7/8

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)
TPS3896 Order now Adjustable     1     6.5     1.7     Active-high
Push-pull    
Programmable     Active-low enable
Manual reset    
Catalog     -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    
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    
TPS3895 Order now Adjustable     1     6.5     1.7     Active-low
Push-pull    
Programmable     Active-high enable
Manual reset    
Catalog     -40 to 125     None    
TPS3897 Order now Adjustable     1     6.5     1.7     Active-low
Open-drain    
Programmable     Active-high enable
Manual reset    
Catalog     -40 to 125     None    
TPS3898 Order now Adjustable     1     6.5     1.7     Active-high
Open-drain    
Programmable     Active-low enable
Manual reset    
Catalog     -40 to 125     None