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L5988 数据表(PDF) 5 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) 5 Page - STMicroelectronics

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L5988
Maximum ratings
5/10
3
Maximum ratings
4
Electrical characteristics
VCC = 12V, TJ = 25° C, unless otherwise specified
Table 2.
Absolute maximum ratings
Symbol
Parameter
Value
Unit
VCC
Input voltage
20
V
VOUT
Output DC voltage
-0.3 to 20
V
S/O/U, SS/INH, FB, COMP,
SYNCH, Fsw, ILIM-ADJ
Analog pins
-0.3 to 4
V
PTOT
Power dissipation at TA = 60°C
W
TJ
Junction temperature range
-40 to 150
° C
Tstorage
Storage temperature range
-55 to 150
° C
Table 3.
Electrical characteristics
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
VCC
Operating input voltage range
VO = 0.6V
2.9
18
V
Rdson_hs
On resistance high-side MOSFET
75
m
Ω
Rdson_ls
On resistance low-side MOSFET
60
m
Ω
II peak
Current limit
ILIM-ADJ = float
4A
R = 270K
Ω to GND
5A
R = 47K
Ω to VREF
1.3
A
II valley
Current limit
ILIM-ADJ = float
4.6
A
R = 270K
Ω to GND
5.6
A
R = 47K
Ω to VREF
1.8
A
Iqst-by
Total shutdown quiescent current
SS to GND
35
µA
Power-ON
3.3V BUS
Turn-On VCC threshold
2.8
V
Turn-Off VCC threshold
2.6
V
12V BUS
Turn-On VCC threshold
8V
Turn-Off VCC threshold
7V



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