參數(shù)資料
型號: TC1276-20ENBTR
元件分類: 電源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3
封裝: SOT-23B, 3 PIN
文件頁數(shù): 7/12頁
文件大?。?/td> 466K
代理商: TC1276-20ENBTR
TC1275/TC1276/TC1277
DS21383B-page 4
2002 Microchip Technology Inc.
3.0
APPLICATIONS INFORMATION
3.1
Operation – Power Monitor
The TC1275/TC1276/TC1277 provide the function
of detecting out-of-tolerance power supply conditions
and warning a processor-based system of impending
power failure.
When VCC is detected as out-of-
tolerance, the RESET signal is asserted. On power-up,
RESET is kept active for approximately 200msec after
the power supply has reached the selected tolerance.
This allows the power supply and microprocessor to
stabilize before RESET is released.
FIGURE 3-1:
Timing Diagram – Power
Up (TC1275/TC1276)
FIGURE 3-2:
Timing Diagram – Power
Down (TC1275/TC1276)
FIGURE 3-3:
Timing Diagram –
Power Up (TC1277)
FIGURE 3-4:
Timing Diagram –
Power Down (TC1277)
VCCTP(MAX)
VCCTP(MIN)
tR
VCCTP
VCC
RESET
tRPU1
VOH
VCC
RESET
VCCTP(MAX)
VCCTP
VCCTP(MIN)
VOL
tRPD1
tF
tR
tRPU2
VOL
VCCTP
VCC
RESET
VCCTP(MAX)
VCCTP(MIN)
tF
tRPD2
VCC
VCCTP(MAX)
VOH
RESET
VCCTP
VCCTP(MIN)
RESET SLEWS WITH VCC
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