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L5988D 数据表(PDF) 9 Page - STMicroelectronics

部件名 L5988D
功能描述  Pre-bias start up capability
PDF  52 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L5988D 数据表(HTML) 9 Page - STMicroelectronics

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L5988D
Electrical characteristics
52
4
Electrical characteristics
VCC = 12 V, TJ = 25 °C unless otherwise specified.
Table 5. Electrical characteristic
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
VCC
Operating input voltage range
Vout = 0.6 V; Iout = 3 A
2.9
18
V
RDS(on) HS High side MOSFET on resistance Iout = 1.0 A
75
85
95
m
(1)
111
120
132
m
RDS(on) LS Low side MOSFET on resistance Iout = 1.0 A
62
67
72
m
(1)
92
100
106
m
IL HIGH SIDE Maximum peak limiting current
ILIM-ADJ = float
3.6
4
4.4
A
IL LOW SIDE Maximum valley limiting current
ILIM-ADJ = float
4.14
4.6
5.06
A
fSW
Switching frequency
FSW = floating
360
400
440
kHz
fSW ADJ
adjusted switching frequency
RFSW PULL DWN = 27 k
1000
kHz
D
Duty cycle
0
100
%
Selectable under voltage lockout (UVLO)
3.3 V BUS
Turn ON Vcc threshold
2.7
2.8
V
Turn OFF Vcc threshold
2.4
2.5
V
Hysteresis
200
mV
12 V BUS
Turn ON Vcc threshold
8
8.6
V
Turn OFF Vcc threshold
6.8
7
V
Hysteresis
1
V
DC characteristic
ISS
Soft-start current
VSS/INH = 2 V
22
A
VSS/INH = 0
5
A
INH
Device ON level
0.8
V
Device OFF level
0.3
V
Iq
Quiescent current
Duty cycle = 0; VFB = 1 V
3
mA
Iq st-by
Total stand-by quiescent current
35
A
Dynamic characteristic (see Figure 1 on page 1)
VFB
Voltage feedback in regulation
2.9 V < VCC < 18 V
0.595
0.6
0.605
V
(1)
0.592
0.6
0.609
Error amplifier
VOH
High level output voltage
VFB = 0.2 V; SS floating
3.1
V
VOL
Low level output voltage
VFB = 1.0 V
0.1
V



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