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參數(shù)資料
| 型號： | TPS3813L30QDBVRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO6 |
| 封裝： | PLASTIC, SOT-23, 6 PIN |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 295K |
| 代理商： | TPS3813L30QDBVRQ1 |
RESET
WDT
_
+
Rising Edge
Detection
Watchdog
Ratio
Detection
Reset Logic
and Timer
Bandgap
Voltage
Reference
Oscillator
Detection
Circuit
WDI
WDR
GND
VDD
Power to circuitry
GND
R2
R1
GND
VDD
td
VIT
0.6 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
Output Condition
Undefined
TPS3813J25-Q1, TPS3813L30-Q1
TPS3813K33-Q1, TPS3813I50-Q1
www.ti.com.................................................................................................................................................... SPRS288A – MAY 2008 – REVISED NOVEMBER 2008
FUNCTIONAL SCHEMATIC
TIMING DIAGRAM
The lower boundary of the watchdog window starts with the rising edge of the WDI trigger pulse. At the same
time, all internal timers are reset. If an external capacitor is used, the lower boundary is impacted due to the
different oscillator frequency. This is described in more detail in the following section. The timing diagram and
especially the shaded boundary is prepared in a nonreal ratio scale to better visualize the description.
Copyright 2008, Texas Instruments Incorporated
3
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