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TPS3813 Datasheet(PDF) 6 Page - Texas Instruments

Part # TPS3813
Description  TPS3813xxx Family Processor Supervisory Circuits With Window-Watchdog
PDF  25 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

TPS3813 Datasheet(HTML) 6 Page - Texas Instruments

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6.7 Switching Characteristics
At RL = 1MΩ, CL = 50pF, and TA = –40°C to +85°C.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
td
Delay time
VDD ≥ VIT + 0.2V, See Figure 6-1
20
25
30
ms
tt(out) Watchdog time-out
Upper limit
WDT = 0V
0.2
0.25
0.3
s
WDT = VDD
2
2.5
3
WDT = programmable (1)
See (2)
ms
Watchdog window ratio
WDR = 0V, WDT = 0V
1:31.8
WDR = 0V, WDT = VDD
1:32
WDR = 0V, WDT = programmable
1:25.8
WDR = VDD, WDT = 0V
1:124.9
WDR = VDD, WDT = VDD
1:127.7
WDR = VDD, WDT = programmable
1:64.5
tPHL
Propagation (delay) time,
high-to-low-level output
VDD to RESET delay
VIL = VIT – 0.2V, VIH = VIT + 0.2V
30
50
µs
(1)
155pF < C(ext) < 63nF
(2)
(C(ext) ÷ 15.55pF + 1) × 6.25ms
6.8 Dissipation Ratings
PACKAGE
TA < 25°C POWER
RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 80°C
POWER RATING
DBV
437mW
3.5mW/°C
280mW
227mW
VDD
td
td
td
VIT
1.1 V
RESET
Output Condition
Undefined
WDI
1st Window
Without Lower
Boundary
2nd Window
With Lower
Boundary
3rd Window
With Lower
Boundary
Trigger Pulse
Lower Window
Boundary
1st Window
Without Lower
Boundary
1st Window
Without Lower
Boundary
2nd Window
With Lower
Boundary
3rd Window
With Lower
Boundary
t
t
t
Output Condition
Undefined
Figure 6-1. Timing Diagram
TPS3813
SLVS331J – DECEMBER 2000 – REVISED AUGUST 2024
www.ti.com
6
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Product Folder Links: TPS3813



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