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L5980 数据表(PDF) 5 Page - STMicroelectronics

部件名 L5980
功能描述  0.7A step-down switching regulator
PDF  37 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L5980 数据表(HTML) 5 Page - STMicroelectronics

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Electrical characteristics
L5980
5/37
3
Electrical characteristics
TJ=25°C, VCC=12V, unless otherwise specified.
Table 3.
Electrical characteristics
Symbol
Parameter
Test condition
Values
Unit
Min
Typ
Max
VCC
Operating input voltage
range
(1)
2.9
18
V
VCCON
Turn on VCC threshold
(1)
2.9
VCCOFF
Turn off VCC threshold
(1)
2.4
RDSON
Mosfet on resistance
x150
x
m
Ω
(1)
150
300
ILIM
Maximum limiting current
1.0
1.3
1.6
A
Oscillator
FSW
Switching frequency
225
250
275
kHz
(1)
x250
x
VFSW
FSW pin voltage
1.262
V
D
Duty Cycle
0
100
%
FADJ
Adjustable switching
frequency
RFSW=33kΩ
1000
kHz
Dynamic characteristics
VFB
Feedback voltage
2.9V<VCC<18V
0.593
0.6
0.607
V
DC characteristics
IQ
Quiescent current
Duty Cycle=0,
VFB=0.8V
2.4
mA
IQST-BY
Total stand-by quiescent
current
20
30
µA
Inhibit
INH threshold voltage
Device ON level
0.6
V
Device OFF level
1.9
INH current
INH=0
7.5
10
µA
Soft start
TSS
Soft start duration
FSW=Floating
7.4
8.2
9.1
ms
FSW=1MHz,
RFSW=33kΩ
2



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