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參數(shù)資料
| 型號： | L4971D |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 基準(zhǔn)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(guān)穩(wěn)壓9V輸出 |
| 文件頁數(shù)： | 4/12頁 |
| 文件大?。?/td> | 134K |
| 代理商： | L4971D |
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
DC Characteristics
I
qop
Total operating quiescent
current
Quiescent current
Total stand-by quiescent
current
4
6
mA
I
q
Duty Cycle = 0; V
FB
= 3.8V
V
inh
<0.9V
Vcc = 55V; V
inh
<0.9V
2.5
100
150
3.5
200
300
mA
μ
A
μ
A
I
qst-by
Error Amplifier
V
FB
R
L
Voltage Feedback Input
Line regulation
Ref. voltage stability vs
temperature
High level output voltage
Low level output voltage
Source output current
Sink output current
Source bias current
Supply voltage ripple rejection
DC open loop gain
Transconductance
3.33
3.36
5
0.4
3.39
10
V
Vcc = 8 to 55V
mV
mV/
°
C
*
V
oH
V
oL
I
o source
I
o sink
I
b
SVRR E/A
V
FB
= 2.5V
V
FB
= 3.8V
V
comp
= 6V; V
FB
= 2.5V
V
comp
= 6V; V
FB
= 3.8V
10.3
V
V
μ
A
μ
A
μ
A
dB
dB
ms
0.65
200
200
300
300
2
80
57
2.5
3
V
comp
= V
fb
; Vcc = 8 to 55V
R
L
=
∞
I
comp
= -0.1 to 0.1mA
V
comp
= 6V
60
50
gm
OscillatorSection
Ramp Valley
Ramp peak
0.78
2
9
95
0.85
2.15
9.6
97
0.92
2.3
10.2
V
V
V
%
kHz
Vcc = 8V
Vcc = 55V
Maximum duty cycle
Maximum Frequency
Duty Cycle = 0%
R
osc
= 13k
, C
osc
= 820pF
500
ELECTRICAL CHARACTERISTICS
(continued)
L4971
4/12
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