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參數資料
| 型號： | LM3880MFX-1 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Power Sequencer |
| 中文描述： | 電力序 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 619K |
| 代理商： | LM3880MFX-1 |
LM3880
Power Sequencer
General Description
The LM3880 Power Sequencer offers the easiest method to
control power up and power down of multiple power supplies
(switchers or linear regulators). By staggering the startup
sequence, it is possible to avoid latch conditions or large
in-rush currents that can affect the reliability of the system.
Available in a SOT23-6 package, the Power Sequencer
contains a precision enable pin and three open drain output
flags. Upon enabling the LM3880 the three output flags will
sequentially release, after individual time delays, permitting
the connected power supplies to startup. The output flags
will follow a reverse sequence during power down to avoid
latch conditions.
Standard timing option of 30ms is available.
EPROM capability allows every delay and sequence to be
fully adjustable. Contact National Semiconductor if a non-
standard configuration is required.
Features
n
Easiest method to sequence rails
n
Power up and power down control
n
Input voltage range of 2.7V to 5.5V
n
Small footprint SOT23-6
n
Low quiescent current of 20 μA
n
Standard timing options available
n
Customization of timing and sequence available through
factory programmability
Applications
n
Multiple supply sequencing
n
Microprocessor / Microcontroller sequencing
n
FPGA sequencing
Typical Application Circuit
20192601
September 2006
L
2006 National Semiconductor Corporation
DS201926
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM3880MFX-1AA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Sequencer |
| LM3880MFX-1AA/NOPB | 功能描述:監控電路 RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 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 |
| LM3880MFX-1AB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Sequencer |
| LM3880MFX-1AB/NOPB | 功能描述:監控電路 RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 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 |
| LM3880MFX-1AC | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Power Sequencer |
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