L4992 Просмотр технического описания (PDF) - STMicroelectronics
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L4992 Datasheet PDF : 26 Pages
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L4992
ABSOLUTE MAXIMUM RATINGS
Symbol
VIN
VI
IIN
IOUT
TJ
Parameter
Power Supply Voltage on VIN
Maximum Pin Voltage to Pins 1, 24, 25, 32
Input Current Except V13IN and VIN
Output Current Digital Output
Junction Temperature
THERMAL DATA
Symbol
RTH J-amb
Parameter
Thermal Resistance Junction -Ambient
PIN CONNECTION (Top view)
Value
0 to 25
-0.5 to (VIN +5)
-1 to +1
-15 to +15
-55 to 150
Value
60
Unit
V
V
mA
mA
°C
Unit
°C/W
H5STRAP
VIN
REG5
V5SW
V5SNS
I5SNS
COMP5
SOFT5
32 31 30 29 28 27 26 25
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9 10 11 12 13 14 15 16
H3STRAP
(*)
REG12
V13IN
V3SNS
I3SNS
COMP3
SOFT3
D96IN377
(*)TO BE CONNECTED TO PIN13
BLOCK DIAGRAM
SOFT5
SOFT3
8
17
6
I5SNS
5
V5SNS
7
COMP5
SLOPE
+
ERROR SUMMING
-
+
∑
-
+
SOFT
SOFT
I5SNS V5SNS V3SNS I3SNS
+
ERROR SUMMING
-
∑+
-
+
SLOPE
19
I3SNS
20
V3SNS
18
COMP3
1
H5STRAP
-
VREF
OVER CURRENT
COMPARATOR
+
OVER CURRENT
COMPARATOR
+
-
VREF
24
H3STRAP
32
H5GATE
31
H5SRC
Hside
REG5
CONTROL
LOGIC
-
ZERO CROSSING
COMPARATOR
+
-
-
ZERO CROSSING
COMPARATOR
+
-
CONTROL
LOGIC
Hside
REG5
25
H3GATE
26
H3SRC
30
R5GATE
29
PGND5
Lside
PULSE SKIPPING
COMPARATOR
+
-
PULSE SKIPPING
COMPARATOR
+
-
Lside
27
R3GATE
28
PGND3
REG5
3
4
W5SW
2
VIN
VREF 12
SGND
13
LINEAR
REGULATOR
-
+
SWITCH
COMPARATOR
VREF BUFFER +
-
V5SNS
OVERVOLT
COMPARATOR
UNDERVOLT
COMPARATOR
4.7V
POWER MANAGEMENT
&
SYSTEM SUPERVISOR
VREF
16
11
10
14
9
RUN3 RUN5 PWROK NOSKIP CRST
13V UV Comp
+
-
13V
21
V13IN
VREF
OSCILLATOR &
SYNCHRONIZATION
22
REG12
LDO
REG12
15
OSC
D96IN375
2/26
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