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L5988 数据表(PDF) 6 Page - STMicroelectronics

部件名 L5988
功能描述  4A step-down switching regulator with synchronous rectification
PDF  10 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L5988 数据表(HTML) 6 Page - STMicroelectronics

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Electrical characteristics
L5988
6/10
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
Soft start and inhibit
Iss
Soft start current
SS = 2V
18
µA
Inhibit current
SS = 0V
5
µA
Device ON level
0.8
V
Device OFF level
0.3
V
Oscillator
fS
Switching frequency
FSW = open
400
KHz
Duty cycle (1)
0
100
%
Voltage feedback
VFB
Output voltage
2.9V < VCC < 18V
0.6
V
Error amplifier
VCOMP
Output voltage
VSS = 3V
03
V
IFB
Bias current
VFB = 0V to 2.5V
0.290
µA
Io source
Source output pin
25
mA
Io sink
Sink output pin
40
mA
VCM
Common mode voltage
0
2.3
V
VOFFSET
Error amplifier offset
Vref = 0.6V
-5
+5
mV
GV
Open loop voltage gain
100
dB
Reference section
VREF
Reference voltage
Iref = 0 to 5mA
VCC = 2.9 to 18V
1.8
V
Line regulation
Iref = 0 mA
VCC = 2.9 to 18V
6
mV
Load regulation
Iref = 0 to 5mA
7.5
mV
Short circuit current
12
mA
Protections
Over voltage trip
(VFB / 0.6V int. ref.)
VFB Rising
20
%
1.
Guaranteed by design
Table 3.
Electrical characteristics



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