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參數(shù)資料
| 型號： | PCF1252-2P/F4 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, SOT-97-1, DIP-8 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 183K |
| 代理商： | PCF1252-2P/F4 |
1998 Apr 16
2
Philips Semiconductors
Product specication
Threshold detector and reset generator
PCF1252-X family
FEATURES
Very low current consumption, typically 10 A
10 factory programmed threshold voltages available
covering trip voltages from 4.75 to 2.55 V
±50 mV trip point accuracy over full temperature range
Variable RESET delay
RESET pulse polarity selection
Defined outputs at 0.6 V (typ.)
Comparator for second level detection
(e.g. overvoltage detection)
Advance warning of power fail
Operating temperature range 40 to +85 °C.
GENERAL DESCRIPTION
The PCF1252-Xs are low-power CMOS voltage threshold
detectors designed especially for supervision of
microcontroller/microprocessor systems for detection of
power-on/off conditions and generation of a system reset
pulse. The PCF1252-X also provides a POWF (power fail)
output which is activated at a precise factory-programmed
trip point. A system RESET output has a built-in delay with
duration determined by an external capacitor (CCT).
A second comparator (comparator 2) has been included to
enable the possibility of a second monitoring point in the
system.
ORDERING INFORMATION
Note
1. X = 0 to 9; depending on threshold voltage.
BLOCK DIAGRAM
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
PCF1252-XP(1)
DIP8
plastic dual in-line package; 8 leads (300 mil)
SOT97-1
PCF1252-XT(1)
SO8
plastic small outline package; 8 leads; body width 3.9 mm
SOT96-1
Fig.1 Block diagram.
handbook, full pagewidth
+
+
COMIN
comparator 2
83
5
PCF1252-X
7
6
1
CT
SELECT
RESET
POWF
COMOUT
MGC915
1.30 V
42
comparator 1
DELAY
VDD
VSS
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCF1252-2PN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Detector |
| PCF1252-2T/F4,112 | 功能描述:監(jiān)控電路 IC VOLT DETECT W/RESET 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 |
| PCF1252-2T/F4,118 | 功能描述:監(jiān)控電路 4.25V UC SUPERVISOR 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 |
| PCF1252-2TD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Detector |
| PCF1252-2TD-T | 功能描述:監(jiān)控電路 4.25V UC SUPERVISOR 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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