參數(shù)資料
型號(hào)： LM2984MDC
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, UUC
封裝： DIE
文件頁(yè)數(shù)： 13/16頁(yè)
文件大?。?/td> 317K
代理商： LM2984MDC
Block Diagram
TLH8821 – 2
Pin Description
Pin No
Pin Name
Comments
1VIN
Positive supply input voltage
2Rt
Sets internal timing currents
3Ct
Sets power-up reset delay timing
4
m
Pmon
Microcomputer monitor input
5Cmon
Sets mC monitor timing
6
Ground
Regulator ground
7
Reset
Reset error flag output
8
ONOFF
Enablesdisables high current regulators
9Vstandby
Standby regulator output (75 mA)
10
Vbuffer
Buffer regulator output (100 mA)
11
VOUT
Main regulator output (500 mA)
External Components
Component
Typical Value
Component Range
Comments
CIN
1 mF
047 mF–10 mF
Required if device is located far from power supply filter
Rt
130k
24k – 12M
Sets internal timing currents
Ct
033 mF
0033 mF – 33 mF
Sets power-up reset delay
Ctc
001 mF
0001 mF – 01 mF
Establishes time constant of AC coupled computer monitor
Rtc
10k
1k – 100k
Establishes time constant of AC coupled computer monitor (See
applications section)
Cmon
047 mF
0047 mF – 47 mF
Sets time window for computer monitor Also determines period and pulse
width of computer malfunction reset (See applications section)
Rrst
10k
5k – 100k
Load for open collector reset output Determined by computer reset input
requirements
Cstby
10 mF10 mF – no bound
A 10 mF is required for stability but larger values can be used to maintain
regulation during transient conditions
Cbuf
10 mF10 mF – no bound
A 10 mF is required for stability but larger values can be used to maintain
regulation during transient conditions
COUT
10 mF10 mF – no bound
A 10 mF is required for stability but larger values can be used to maintain
regulation during transient conditions
6
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2984T 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
LM2984T/NOPB 功能描述:低壓差穩(wěn)壓器 - LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
LM2990J-12-QML 制造商:National Semiconductor Corporation 功能描述:LDO Regulator Neg -12V 1.8A 16-Pin CDIP Tray 制造商:National Semiconductor 功能描述:LDO Regulator Neg -12V 1.8A 16-Pin CDIP Tray
LM2990J-15-QML 制造商:Texas Instruments 功能描述:LDO Regulator Neg -15V 1.8A 16-Pin CDIP Tray
LM2990J-5.0-QM 制造商:National Semiconductor Corporation 功能描述:LDO Regulator Neg -5V 1.8A 16-Pin CDIP Rail 制造商:National Semiconductor 功能描述:LDO Regulator Neg -5V 1.8A 16-Pin CDIP Rail
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