參數(shù)資料
型號(hào)： CAT825TSDI-GT3
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5
封裝： ROHS COMPLIANT, MO-203, SC-70, 5 PIN
文件頁(yè)數(shù)： 12/14頁(yè)
文件大?。?/td> 209K
代理商： CAT825TSDI-GT3
CAT823, CAT824, CAT825
Catalyst Semiconductor, Inc.
7
Doc. No. MD-3027, Rev. B
Characteristics subject to change without notice
FUNCTIONAL DESCRIPTION
PROCESSOR RESET
The
CAT823-825
detect
supply
voltage
(VCC)
conditions that are below the specified voltage trip
value (VRST) and provide a reset output to maintain
correct system operation. On power-up, RESET
(and
RESET if available) are kept active for a minimum
delay tRP of 140ms after the supply voltage (VCC) rises
above VRST to allow the power supply and processor
to stabilize. When VCC drops below the voltage trip
value (VRST), the reset output signals RESET
(and
RESET) are pulled active. RESET
(and RESET if
available) is specifically designed to provide the reset
input signals for processors. This provides reliable
and consistent operation as power is turned on, off or
during brownout conditions by maintaining the
processor operation in known conditions.
MANUAL RESET
The CAT823 and CAT825 each have a Manual Reset
(MR
) input to allow for alternative control of the reset
outputs. The MR
input is designed for direct con-
nection to a pushbutton (see Figure 1). The MR
input
is internally pulled up by 52k resistor and must be
pulled low to cause the reset outputs to go active.
Internally, this input is debounced and timed such that
RESET
(and RESET) signals of at least 140ms
minimum will be generated. The min 140ms tRP delay
commences as the Manual Reset input is released
from the low level. (see Figure 2)
Figure 1. Pushbutton RESET
Figure 2. Timing Diagram – Pushbutton RESET
VIL
VIH
VOH
tRP
tPDLY
tPB
VOL
RESET
MR
RESET
CAT825
VCC
RESET
GND
MR
Supply
Voltage
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CAT825TTDI-G 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:System Supervisory Voltage Reset with Watchdog and Manual Reset
CAT825TTDI-GT3 功能描述:監(jiān)控電路 act low act hi/MR RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
CAT825YSDI-G 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:System Supervisory Voltage Reset with Watchdog and Manual Reset
CAT825YSDI-GT3 功能描述:監(jiān)控電路 SUP ACT LOW ACT HI MR RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
CAT825YTDI-G 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:System Supervisory Voltage Reset with Watchdog and Manual Reset
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