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零件编号
产品描述 (功能)
LT1943 查看數據表(PDF) - Linear Technology
零件编号
产品描述 (功能)
比赛名单
LT1943
High Current Quad Output Regulator for TFT LCD Panels
Linear Technology
LT1943 Datasheet PDF : 20 Pages
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BLOCK DIAGRA
V
IN
V
IN
15
16
C1
V
LOGIC
AV
DD
R2
FB1
4
R1
PGOOD
23
R14
MASTER
OSCILLATOR
1.2MHz
R6
R5
C9
FB2
5
C
T
25
1.12V
20
µ
A
1.125V
SLOPE
FOLDBACK
COMPENSATION
OSCILLATOR
Σ
+
1.25V
–
gm
+
–
gm
+
1.25V
FOLDBACK
OSCILLATOR
–
R
SQ
–
+
R
SQ
Σ
SLOPE
COMPENSATION
DRIVER
DRIVER
RUN-SS
18
C5
V
IN
1.7
µ
A
INTERNAL
REGULATOR
AND
REFERENCE
SS-234
1.7
µ
A
SW2
17
SW3
SW4
C4
LOCKOUT
R9
V
E3
R8
FB3
6
BIAS
2.8V
V
ON
V
ON
26
C15
–
gm
+
1.25V
FOLDBACK
OSCILLATOR
–
gm
+
1.25V
FOLDBACK
OSCILLATOR
1.1V
GND SGND GND
GND
1
11
20
29
–
+
R
SQ
DRIVER
Σ
SLOPE
COMPENSATION
–
+
R
SQ
DRIVER
Σ
SLOPE
COMPENSATION
LT1943
BOOST
D2
12
2.4A
SWITCH SW1
13
14
C3
L1
D1
C2
V
C1
2
C20
V
C2
3
C21
2.6A
SWITCH
BIAS
22
27
SW2
28
C16
R10
C11
R11
C12
L2
D5
L3
C8
V
LOGIC
V
IN
AV
DD
FB4
8
NFB4
C24
7
V
C4
10
C23
R13
C14
400mA
SWITCH
SW4
19
C7
L4
D6
D3 C6
R4
R3
V
LOGIC
V
OFF
V
C3
9
C22
R12
C13
SW3
L5
21
V
IN
400mA
SWITCH
E3
24
V
E3
C10
Figure 1. Block Diagram
1943fa
9
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