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E-L4973D3.3-TR View Datasheet(PDF) - STMicroelectronics

Part Name
Description
MFG CO.
E-L4973D3.3-TR
ST-Microelectronics
STMicroelectronics ST-Microelectronics
E-L4973D3.3-TR Datasheet PDF : 27 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
L4973
1
Block diagram
Block diagram
Figure 2. Block diagram
INH
10(11)
ZERO CURRENT
INHIBIT
VREF
GOOD
17(19)
SS
11(12)
COMP
5.1V
3.3V +
E/A
VFB
-
12(13)
SOFT
START
THERMAL
SHUTDOWN
-
PWM
+
SYNC
18(20)
OSCILLATOR
Pin x = Powerdip
Pin (x) = S020
1(1)
OSC
5.1V
3.3V
V5.1
16(18)
INTERNAL
REFERENCE
VCC
7(8)
VCC
8(9)
CBOOT
CHARGE
INTERNAL
SUPPLY
5.1V
HICCUP CURRENT
LIMITING
CURRENT
LIMITING
RQ
SQ
BOOT
9(10)
4,5,6,13,14,15
(4,5,6,7,14,15,16,17)
GND
DRIVER
2(2)
OUT
3(3)
OUT
D94IN161B
2
2.1
Pin settings
Pin connection
Figure 3. Pin connection (top view)
OSC
OUT
OUT
GND
GND
GND
VCC
VCC
BOOT
1
18
2
17
3
16
4
15
5
14
6
13
7
12
8
11
9
10
D94IN162A
SYNC
SS
V5.1
GND
GND
GND
VFB
COMP
INH
DIP -18 (12+3+3)
OSC
OUT
OUT
GND
GND
GND
GND
VCC
VCC
BOOT
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
D94IN163A
SO20 (12+4+4)
SYNC
SS
V5.1
GND
GND
GND
GND
VFB
COMP
INH
3/27
 

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