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Número de pieza
componentes Descripción
LT1942EUF(RevA) Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Lista de partido
LT1942EUF
(Rev.:RevA)
Quad DC/DC Converter for Triple Output TFT Supply Plus LED Driver
Linear Technology
LT1942EUF Datasheet PDF : 16 Pages
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LT1942
BLOCK DIAGRA
SHDN
7
ONE
SHOT
PGOOD
13
SS1
11
ENABLE
1.250V
REFERENCE
SOFT-START
+
FB1
14
–
AV
DD
BOOST CONVERTER
COMPARATOR
–
RSQ
+
DRIVER
SW1
20
Q1
QR S
+–
28mV
Σ
RAMP-PULSE
GENERATOR
PGND14
V
CC
ENABLE
–150mV
REFERENCE
–
22
NFB2
6
+
1MHz
OSCILLATOR
V
OFF
INVERTING CONVERTER
COMPARATOR
–
RSQ
+
DRIVER
SW2
24
Q2
ENABLE
1.250V
REFERENCE
+
FB3
5
–
Σ
RAMP-PULSE
GENERATOR
V
ON
BOOST CONVERTER
COMPARATOR
–
RSQ
+
DRIVER
D2
D2
23
SW3
D3
2
3
D3
Q3
Q5
V
OUT3
4
Σ
PNP
DRIVE
CTRL4
8
AGND
10
200mV
SS4
12
ENABLE
SOFT-START
90k
+
10k
FB4
–
RAMP-PULSE
GENERATOR
CT
1
DELAY
GENERATOR
9
PGND23
LED BOOST CONVERTER
40V
COMPARATOR
–
SW4
D4
19
16
D4
DRIVER
RSQ
Q4
+
LED1
18
LED2
17
Σ
Q6
Q7
RAMP-PULSE
GENERATOR
21
PGND14
15
1942BD
FB4
1942fa
9
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