TPS3825 Voltage supervisor (reset IC) with manual reset | TI.com

TPS3825 (ACTIVE) Voltage supervisor (reset IC) with manual reset

 

Description

The TPS382x family of supervisors provide circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power on, RESET asserts when the supply voltage VDD becomes greater than 1.1 V. Thereafter, the supply voltage supervisor monitors VDD and keeps RESET active low as long as VDD remains less than the threshold voltage, VIT−. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset. The delay time, td, starts after VDD has risen above the threshold voltage (VIT− + VHYS). When the supply voltage drops below the threshold voltage VIT−, the output becomes active (low) again. No external components are required. All the devices of this family have a fixed-sense threshold voltage, VIT–, set by an internal voltage divider. The TPS382x family also offers watchdog time out options of 200 ms (TPS3820) and 1.6 s (TPS3823/4/8).

Features

  • Power-On Reset Generator With Fixed Delay Time of 200 ms (TPS3823/4/5/8) or 25 ms (TPS3820)
  • Manual Reset Input (TPS3820/3/5/8)
  • Reset Output Available in Active-Low (TPS3820/3/4/5), Active-High (TPS3824/5), and Open Drain (TPS3828)
  • Supply Voltage Supervision Range:
    2.5 V, 3 V, 3.3 V, 5 V
  • Watchdog Timer (TPS3820/3/4/8)
  • Supply Current of 15 µA (Typical)
  • 5-Pin SOT-23 Package
  • Temperature Range: −40°C to 85°C

All trademarks are the property of their respective owners.

Parametrics

Compare all products in Supervisor & reset ICs Email Download to Excel
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)
TPS3825 Order now 2.93
4.55    
1     5.5     1.1     Active-high
Active-low
Push-pull    
200     Active-low enable
Manual reset
Dual output    
Catalog     -40 to 85     None    
TPS3825-Q1 Order now 2.93
4.55    
1     5.5     1.1     Active-high
Active-low
Push-pull    
200     Active-low enable
Manual reset
Dual output    
Automotive     -40 to 125     1.6