- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385479 > LM2984CT (NATIONAL SEMICONDUCTOR CORP) LM2984C Microprocessor Power Supply System PDF資料下載
參數(shù)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(shù)： | 5/14頁 |
| 文件大?。?/td> | 284K |
| 代理商： | LM2984CT |
Electrical Characteristics
(Continued)
V
IN
e
14V, I
OUT
e
5 mA, I
buf
e
5 mA, I
stby
e
5 mA, R
t
e
130k, C
t
e
0.33
m
F, C
mon
e
0.47
m
F, T
j
e
25
§
C (Note 6) unless
otherwise specified
Tested
Limit
(Note 2)
Design
Limit
(Note 3)
Parameter
Conditions
Typical
Units
Computer Monitor/Reset Functions
I
reset
Low
V
IN
e
4V, V
rst
e
0.4V
5
2
1
mA
min
V
reset
Low
V
IN
e
4V, I
rst
e
1 mA
0.10
0.40
V
max
R
t voltage
(Pin 2)
1.22
1.15
V
min
1.22
1.30
V
max
Power On Reset
Delay
V
m
P
mon
e
5V
(T
dly
e
1.2 R
t
C
t
)
50
45
ms
min
50
55
ms
max
V
OUT
Low
Reset Threshold
(Note 4)
4.00
3.60
V
min
4.00
4.40
V
max
V
OUT
High
Reset Threshold
(Note 4)
5.50
5.25
V
min
5.50
6.00
V
max
Reset Output
Leakage
V
m
P
mon
e
5V, V
rst
e
12V
0.01
1
m
A
max
m
P
mon
Input
Current (Pin 4)
V
m
P
mon
e
2.4V
7.5
25
m
A
max
V
m
P
mon
e
0.4V
0.01
10
m
A
max
m
P
mon
Input
Threshold Voltage
1.22
0.80
0.80
V
min
1.22
2.00
2.00
V
max
m
P Monitor Reset
Oscillator Period
V
m
P
mon
e
0V
(T
window
e
0.82 R
t
C
mon
)
50
45
ms
min
50
55
ms
max
m
P Monitor Reset
Oscillator Pulse Width
V
m
P
mon
e
0V
(RESET
pw
e
2000 C
mon
)
1.0
0.7
0.5
ms
min
1.0
1.3
2.0
ms
max
Minimum
m
P Monitor
Input Pulse Width
(Note 5)
2
m
s
max
Reset Fall Time
R
rst
e
10k, V
rst
e
5V, C
rst
s
10 pF
0.20
1.00
m
s
max
Reset Rise Time
R
rst
e
10k, V
rst
e
5V, C
rst
s
10 pF
0.60
1.00
m
s
max
On/Off Switch Input
Current (Pin 8)
V
ON
e
2.4V
7.5
25
m
A
max
V
ON
e
0.4V
0.01
10
m
A
max
On/Off Switch Input
Threshold Voltage
1.22
0.80
0.80
V
min
1.22
2.00
2.00
V
max
Note 1:
Thermal resistance without a heatsink for junction-to-case temperature is 3
§
C/W. Thermal resistance case-to-ambient is 40
§
C/W.
Note 2:
Tested Limits are guaranteed and 100% production tested.
Note 3:
Design Limits are guaranteed (but not 100% production tested) over the indicated temperature and supply voltage range. These limits are not used to
calculate outgoing quality levels.
Note 4:
An internal comparator detects when the main regulator output (V
OUT
) drops below 4.0V or rises above 5.5V. If either condition exists at the output, the
Reset Error Flag is held low until the error condition has terminated. The Reset Error Flag is then allowed to go high again after a delay set by R
t
and C
t
. (See
Applications Section.)
Note 5:
This parameter is a measure of how short a pulse can be detected at the
m
P Monitor Input. This parameter is primarily influenced by the value of C
mon
.
(See Typical Performance Characteristics and Applications Section.)
Note 6:
To ensure constant junction temperature, low duty cycle pulse testing is used.
5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2990WG5.0-QML | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LM2990S-12 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LM2990S-15 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LM2990S-5.0 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| LM2990 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2984CT/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 | 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。