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參數(shù)資料
| 型號(hào)： | FM1233ACS3X |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 3-Pin C Supervisor Circuit |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封裝： | SOT-23, 3 PIN |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 66K |
| 代理商： | FM1233ACS3X |
2004 Fairchild Semiconductor Corporation
FM1233A Rev. E
1
www.fairchildsemi.com
September 2004
F
FM1233A
3-Pin μC Supervisor Circuit
General Description
The FM1233A is a supervisor circuit that monitors a micropro-
cessor power supply or other system voltage and issues a reset
pulse when a fault condition exists. Several different threshold
voltages are offered to accommodate 3.3V and 3.0V systems
with different tolerances.
FM1233A features a precision temperature-compensated volt-
age reference and comparator. When V
voltage, a RESET pulse is issued, holding the output in the
active state. When power rises above V
asserted for a minimum period (t
and other circuits to stabilize. The reset output of FM1233A is of
open-drain active low type.
CC
falls to the threshold
TH
, the reset remains
) to allow the system clock
RST
The FM1233A also can monitor a switch closure on its output,
enabling it to recognize an external reset from a pushbutton
switch or a μP. In the case of a switch, the closure will be
debounced by circuitry internal to the FM1233A.
Features
■
Precision monitoring of 3.3V and lower voltage
microprocessor systems
V
TH
values of 3.08V, 2.88V and 2.72V
Automatic restart of microprocessor after power failure
Reset Timeout Period Choice:
– Options AC and AD: 140ms (min)/256ms (typ)
– Option ABA: 17ms (min)/32ms (typ)
– Available on request: 64ms (typ) and 128ms (typ)
Internal 5k
pull-up resistor
Operating Temperature -40°C to +105°C
Monitors external pushbutton override
Internal switch debounce circuitry
SOT23-3 package
■
■
■
■
■
■
■
■
Typical Operating Circuit
Connection Diagram
SOT23-3 Package
1
FM1233A
Controller
2
3
V
CC
GND
RESET
GND
V
CC
RESET
1
FM1233A
2
3
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| FM1233AD | CABLE ASSEM 2MM 20POS SGL END 2,1 |
| FM1233ADS3X | 3-Pin C Supervisor Circuit |
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| FMG-23S | Ultra-Fast-Recovery Rectifier Diodes |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FM1233AD | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:3-Pin C Supervisor Circuit |
| FM1233ADS3X | 功能描述:監(jiān)控電路 2.72V Gen Circuit aL Bidirectional PR 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(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 |
| FM1233B | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:3-Pin レC Supervisor Circuit |
| FM1233BDS3X | 功能描述:監(jiān)控電路 4.38V Gen Circuit aL Bidirectional PR 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(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 |
| FM1233BES3X | 功能描述:監(jiān)控電路 4.12V Gen Circuit aL Bidirectional PR 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(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 |
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