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參數(shù)資料
| 型號： | L5970AD |
| 廠商： | 意法半導體 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 抗輻射高效，5安培開關(guān)穩(wěn)壓器 |
| 文件頁數(shù)： | 3/11頁 |
| 文件大小： | 135K |
| 代理商： | L5970AD |
3/11
L5970AD
Table 5. Electrical Characteristics
(T
j
= 25°C, V
CC
= 12V, unless otherwise specified.
)
Note:
1. Guaranteed by design
Symbol
V
CC
R
DSON
I
l
f
s
Parameter
Test Condition
Min.
4.4
Typ.
Max.
36
Unit
V
A
Operating input voltage range
Mosfet on Resistance
0.250
0.5
Maximum limiting current
V
CC
= 4.4V to 36V
1.8
Switching frequency
500
KHz
Duty cycle
0
100
%
DYNAMIC CHARACTERISTICS
V
5
Voltage feedback
η
Efficiency
DC CHARACTERISTICS
I
qop
Total Operating Quiescent Current
I
q
Quiescent current
I
qst-by
Total stand-by quiescent current
INHIBIT
INH Threshold Voltage
4.4V < V
CC
< 36V
V
O
= 5V, V
CC
= 12V
1.220
1.235
1.25
V
90
%
5
7
mA
Duty Cycle = 0; V
FB
= 1.5V
V
inh
> 2.2V
2.7
mA
μ
A
50
100
Device ON
Device OFF
0.8
V
V
2.2
ERROR AMPLIFIER
V
OH
V
OL
I
o source
I
o sink
I
b
High level output voltage
VFB = 1V
3.5
V
Low level output voltage
VFB = 1.5V
0.4
V
μ
A
mA
μ
A
dB
Source output current
V
COMP
= 1.9V; V
FB
= 1V
V
COMP
= 1.9V; V
FB
= 1.5V
200
300
Sink output current
1
1.5
Source bias current
2.5
4
DC open loop gain
R
L
=
∞
I
comp
= -0.1mA to 0.1mA
V
COMP
= 1.9V
50
57
gm
Transconductance
2.3
mS
SYNC FUNCTION
High Input Voltage
V
CC
= 4.4V to 36V
V
CC
= 4.4V to 36V
V
sync
= 0.74V
(1)
V
sync
= 2.33V
I
source
= 3mA
no load, V
sync
= 1.65V
2.5
V
REF
0.74
V
Low Input Voltage
V
Slave Sink Current
0.11
0.21
0.25
0.45
mA
mA
Master Output Amplitude
2.75
3
V
μ
s
Output Pulse Width
0.20
0.35
REFERENCE SECTION
Reference Voltage
3.234
3.2
3.3
3.3
3.366
3.399
V
V
I
REF
= 0 to 5mA
V
CC
= 4.4V to 36V
I
REF
= 0mA
V
CC
= 4.4V to 36V
I
REF
= 0 to 5mA
Line Regulation
5
10
mV
Load Regulation
8
15
mV
Short Circuit Current
10
18
30
mA
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