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參數(shù)資料
| 型號： | MAX6734KAVDD3-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Analog Video Front-End Processors; Function: 2in/1out component video switching and frequency detection; Features: YCbCr/RGB or D-pin, auto sync processor, pre-filter for ADC, dummy HD/VD output; Operating Voltage: 5V; Package: QFP48 (lead-free); Additional Information: More Info |
| 中文描述： | 3-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | SOT-23, 8 PIN |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 244K |
| 代理商： | MAX6734KAVDD3-T |
M
Overdrive, for which reset pulses are not generated.
The graph was produced using falling V
CC
_ pulses,
starting above V
TH
and ending below the reset thresh-
old by the magnitude indicated (reset threshold over-
drive). The graph shows the maximum pulse width that
a falling V
CC
transient typically might have without
causing a reset pulse to be issued. As the amplitude of
the transient increases (i.e., goes further below the
reset threshold), the maximum allowable pulse width
decreases. A 0.1μF bypass capacitor mounted close to
V
CC
_ provides additional transient immunity.
Watchdog Software Considerations
Setting and resetting the watchdog input at different
points in the program rather than
“
pulsing
”
the watch-
dog input high-low-high or low-high-low helps the
watchdog timer closely monitor software execution.
This technique avoids a
“
stuck
”
loop, in which the
watchdog timer continues to be reset within the loop,
preventing the watchdog from timing out. Figure 6
shows an example flow diagram in which the I/O dri-
ving the watchdog input is set high at the beginning of
the program, set low at the beginning of every subrou-
tine or loop, and then set high again when the program
returns to the beginning. If the program
“
hangs
”
in any
subroutine, the I/O continually asserts low (or high),
and the watchdog timer expires, issuing a reset or
interrupt.
Single-/Dual-/Triple-Voltage μP Supervisory
Circuits with Independent Watchdog Output
12
______________________________________________________________________________________
START
SET WDI
HIGH
PROGRAM
CODE
RETURN
SUBROUTINE
COMPLETED
HANG IN
SUBROUTINE
SUBROUTINE OR
PROGRAM LOOP
SET WDI LOW
Figure 6. Watchdog Flow Diagram
MAX6730–
MAX6735
V
REF
RESET
TIMEOUT
PERIOD
RESET
OUTPUT
DRIVER
WATCHDOG
TIMER
REF
V
CC
1
V
REF
/ 2
GND
V
CC
1
MR
V
CC
1
V
CC
1
V
CC
1
V
CC
2
MR
PULLUP
V
CC
1
V
CC
2
RSTIN
RST
WDO
WDI
Functional Diagram
相關PDF資料 |
PDF描述 |
|---|---|
| MAX6734KAVHD5-T | FETs - Nch 60V<VDSS=150V; Surface Mount Type: N/Y; Package: NEW PW-MOLD2; Number Of Pins: 3; R DS On (O): (max 0.30) (max 0.23); P D (W): (max 5) |
| MAX6734KAVHD6-T | Single-/Dual-/Triple-Voltage µ.P Supervisory Circuits with Independent Watchdog Output |
| MAX6734KAWED1-T | FETs - Nch 60V<VDSS=150V; Surface Mount Type: Y; Package: SOP Advance; Number Of Pins: 8; R DS On (O): (max 0.35); P D (W): (max 7) |
| MAX6734KAWED2-T | FETs - Nch 60V<VDSS=150V; Surface Mount Type: Y; Package: TSSOP-8; Number Of Pins: 8; R DS On (O): (max 0.35); P D (W): (max 2.1) |
| MAX6734KAWED3-T | FETs - Nch 150V<VDSS=250V; ; Package: TO-3P(L); R DS On (Ω): (max 0.625); P D (W): (max 12) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6734KAVDD4+T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6734KAVDD4-T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6734KAVDD5+T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6734KAVDD5-T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6734KAVDD6+T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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