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參數(shù)資料
| 型號： | L4971 |
| 廠商： | 意法半導體 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Isolated Flyback Switching Regulator with 9V Output |
| 中文描述： | 隔離反激式開關穩(wěn)壓9V輸出 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 134K |
| 代理商： | L4971 |
ELECTRICAL CHARACTERISTICS
(Tj = 25
°
C, Cosc = 2.7nF, Rosc = 20k
, V
CC
= 24V, unless other-
wise specified.) * SpecificationReferedto Tj from 0 to 125
°
C
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
DYNAMICCHARACTERISTIC
V
I
Operating input voltage range
V
o
Output voltage
V
o
= 3.3 to 50V; I
o
= 1.5A
I
o
= 0.5A
I
o
= 0.2 to 1.5A
V
cc
= 8to 55V
V
cc
= 10V; I
o
= 1.5A
*
8
55
3.39
3.427
3.5
0.55
0.88
3
V
V
V
V
V
V
A
%
3.33
3.292
3.22
3.36
3.36
3.36
0.44
*
V
d
Dropout voltage
*
*
I
l
Maximum limiting current
Efficiency
Switching frequency
Supply voltage ripple rejection
V
cc
= 8to 55V
V
o
= 3.3V; I
o
= 1.5A
2
2.5
85
100
f
s
*
90
60
110
KHz
dB
SVRR
V
i
= V
cc
+2V
RMS
; V
o
= V
ref
;
I
o
= 1.5A; f
ripple
= 100Hz
Vcc = 8 to 55V
Voltage stability of switching
frequency
Temp. stability of switching
frequency
3
6
%
T
j
= 0 to 125
°
C
4
%
Soft Start
Soft start charge current
Soft start discharge current
30
6
40
10
50
14
μ
A
μ
A
Inhibit
V
LL
I
sLL
Low level voltage
Isource Low level
*
*
0.9
15
V
μ
A
5
THERMAL DATA
Symbol
R
th(j-amb)
Parameter
Minidip
90 (*)
SO16
110 (*)
Unit
°
C/W
Thermal Resistance Junction to ambient
Max.
(*) Package mounted on board.
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
Minidip
V
5
V
4
S016
V
11
V
5
,V
6
Input voltage
Output DC voltage
Output peak voltage at t = 0.1
μ
s f=200KHz
Maximum output current
58
-1
-5
V
V
V
I
4
I
5
,I
6
int. limit.
14
70
12
13
6
-0.3
1
0.8
-40 to 150
V
6
-V
5
V
6
V
7
V
2
V
8
V12-V
11
V
12
V
13
V3
V
14
V
V
V
V
V
V
W
W
°
C
Bootstrap voltage
Analogs input voltage (V
CC
= 24V)
Analogs input voltage (VCC = 24V)
(V
CC
= 20V)
P
tot
Power dissipation a T
amb
≤
60
°
C
Minidip
SO16
T
j
,T
stg
Junction and storagetemperature
L4971
3/12
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相關代理商/技術參數(shù) |
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| L4971D | 功能描述:直流/直流開關調節(jié)器 3.3 to 50V Step-Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| L4971D013TR | 功能描述:直流/直流開關調節(jié)器 3.3 to 50V Step-Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| L4972 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2A SWITCHINGREGULATOR |
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