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參數資料
| 型號： | LM2984CT |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | LM2984C Microprocessor Power Supply System |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PZFM11 |
| 封裝： | POWER, PLASTIC, TO-220, 11 PIN |
| 文件頁數： | 1/14頁 |
| 文件大小： | 284K |
| 代理商： | LM2984CT |
TL/H/8821
L
May 1989
LM2984C Microprocessor Power Supply System
General Description
The LM2984C positive voltage regulator features three in-
dependent and tracking outputs capable of delivering the
power for logic circuits, peripheral sensors and standby
memory in a typical microprocessor system. The LM2984C
includes circuitry which monitors both its own high-current
output and also an external
m
P. If any error conditions are
sensed in either, a reset error flag is set and maintained until
the malfunction terminates. Since these functions are in-
cluded in the same package with the three regulators, a
great saving in board space can be realized in the typical
microprocessor system. The LM2984C also features very
low dropout voltages on each of its three regulator outputs
(0.6V at the rated output current). Furthermore, the quies-
cent current can be reduced to 1 mA in the standby mode.
Designed also for vehicular applications, the LM2984C and
all regulated circuitry are protected from reverse battery in-
stallations or 2-battery jumps. Familiar regulator features
such as short circuit and thermal overload protection are
also provided. Fixed outputs of 5V are available in the plas-
tic TO-220 power package.
Features
Y
Three low dropout tracking regulators
Y
Output current in excess of 500 mA
Y
Low quiescent current standby regulator
Y
Microprocessor malfunction RESET flag
Y
Delayed RESET on power-up
Y
Accurate pretrimmed 5V outputs
Y
Reverse battery protection
Y
Overvoltage protection
Y
Reverse transient protection
Y
Short circuit protection
Y
Internal thermal overload protection
Y
ON/OFF switch for high current outputs
Y
100% electrical burn-in in thermal limit
Typical Application Circuit
LM2984C
TL/H/8821–1
Order Number LM2984CT
See NS Package Number TA11B
C
OUT
must be at least 10
m
F to
maintain stability. May be increased
without bound to maintain regulation
during transients. Locate as close as
possible to the regulator. This capac-
itor must be rated over the same op-
erating temperature range as the
regulator. The equivalent series re-
sistance (ESR) of this capacitor is
critical; see curve.
C
1995 National Semiconductor Corporation
RRD-B30M115/Printed in U. S. A.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM2984CT/NOPB | 功能描述:低壓差穩壓器 - 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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LM2984T | 功能描述:低壓差穩壓器 - 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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LM2984T/NOPB | 功能描述:低壓差穩壓器 - 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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格: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 |
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