parameter

Number of supplies monitored 1

Threshold voltage 1 (Typ) (V) 2.93, 4.55

Features Manual reset capable, Watchdog timer

Reset threshold accuracy (%) 2.4

Output driver type/reset output Active-low, Push-pull

Time delay (ms) 25

TI functional safety category Functional Safety-Capable

Rating Automotive

Watchdog timer WDI (sec) 0.2

Operating temperature range (C) -40 to 125

Package | Pins | Dimensions SOT-23 (DBV) 55 mm2 1.60 x 2.90

characteristic:

Compliant with automotive application requirements

AEC-Q100 meets the following results:

Device Temperature Grade 1: –40°C to 125°C

Device HBM ESD Classification Level 2

Device CDM ESD Classification Level C4B

ESD protection over 2000 V per MIL-STD-883, Method 3015; using Human Body Model (C = 100 pF, R = 1500 Ω)

Power-on reset generator with 200 ms (TPS3823/4/5/8-xx-Q1) or 25 ms (TPS3820-xx-Q1) fixed delay time

Manual reset input (TPS3820/3/5/8-xx-Q1)

Active-low (TPS3820/3/4/5-xx-Q1), active-high (TPS3824/5-xx-Q1), and open-drain (TPS3828-xx-Q1) provide reset outputs

Supply voltage monitoring range:

2.5V, 3V, 3.3V, 5V

Watchdog Timer (TPS3820/3/4/8-xx-Q1)

15 μA Supply Current (Typical)

5-Pin SOT-23 Package

Temperature range: -40°C to 125°C

Note: For all new designs using the TPS3820-xx-Q1, use the TPS3820-xxQ P DBVRQ1 part number. The TPS3820-xxQ P is functionally equivalent to the TPS3820xxQ replacement. The TPS3820-xxQDBVRQ1 is not recommended for new designs (NRND).

The TPS382x-xx-Q1 family of supervisors provides circuit initialization and timing monitoring and is primarily used in DSP and processor-based systems. During power-up, RESET is asserted when the supply voltage V DD is greater than 1.1 V. Thereafter, as long as V DD remains below the threshold voltage V IT-, the supply voltage monitor monitors V DD and keeps RESET active low. An internal timer delays the return of the output to the inactive state (high) to ensure a proper system reset. The delay time td begins after V DD rises above the threshold voltage V IT-. When the supply voltage falls below the threshold voltage V IT?, the output becomes active (low) again. No external components are required. All devices in this family have a fixed detection threshold voltage V IT– set by an internal voltage divider. The TPS382x-xx-Q1 family also offers watchdog timeout options of 200 ms (TPS3820-xx-Q1) and 1.6 s (TPS3823/4/8-xx-Q1).