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參數(shù)資料
| 型號： | L4990 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.5 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDIP16 |
| 封裝： | DIP-16 |
| 文件頁數(shù)： | 21/24頁 |
| 文件大?。?/td> | 322K |
| 代理商： | L4990 |
8
1012
1416182022
24
7.0
7.5
8.0
8.5
9.0
Vcc
[V]
Iq [m A ]
V14 = 0, V5 = Vr ef
Rt = 4.5Kohm,Tj = 25
°C
500K h z
300K h z
1M h z
100Khz
Figure 3. Quiescent current vs. input voltage.
-50
-25
0
25
50
75
100
125
150
4.9
4.95
5
5.05
5.1
Tj (
°C)
Vref [V])
Vcc = 15V
Iref = 1mA
-50
-25
0
25
50
75
100
125
150
4.9
4.95
5
5.05
5.1
Tj (
°C)
Vref [V]
Vcc = 15V
Iref= 20mA
Figure 8. Vref vs. junction temperature.
8
10121416182022
0
6
12
18
24
30
36
Vcc [V]
Iq [mA]
Co = 1nF, Tj = 25
°C
DC = 1 00%
1M H z
50 0KH z
300KH z
10 0KH z
Figure 5. Quiescent current vs. input voltage
and switching frequency.
0
5
10
15
20
25
4.9
4.95
5
5.05
5.1
Iref [mA]
Vref [V]
Vcc=15V
Tj = 25
°C
Figure 6. Reference voltage vs. load current.
8
10121416
1 8
20
22
0
6
12
18
24
30
36
Vc c [V]
Iq [mA ]
C o = 1nF, Tj = 25
°C
DC = 0 %
1M Hz
500K Hz
300K Hz
100KHz
Figure 4. Quiescent current vs. input voltage
and switching frequency.
L4990 - L4990A
6/24
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| L4990A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PRIMARY CONTROLLER |
| L4990AD | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PRIMARY CONTROLLER |
| L4990D | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PRIMARY CONTROLLER |
| L4991 | 功能描述:TEST COIL FOR REED SWITCH, 1PC RoHS:是 類別:開關 >> 配件 系列:- 標準包裝:100 系列:- 其它名稱:886.0007886.0007-ND |
| L4992 | 制造商:STMicroelectronics 功能描述: 制造商:STMicroelectronics 功能描述:VOLT SUPERVISOR CNTRLR 5.1V/3.3V 32TQFP - Trays |
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