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LT3420 Datasheet(PDF) 7 Page - Linear Technology

Part # LT3420
Description  Photoflash Capacitor Chargers with Automatic Refresh
PDF  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3420 Datasheet(HTML) 7 Page - Linear Technology

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LT3420/LT3420-1
7
3420fa
Figure 3. Block Diagram, LT3420
3420 F03
+ –
R
S
Q
ONE-
SHOT
1V
REFERENCE
5
8
9
2
3
1
6
7
MASTER
LATCH
QQ
S
R
DONE
VBAT
VBAT
RFB
SW
GND
RREF
SEC
VCC
VCC
VOUT
CHARGE
CHIP
ENABLE
CT
BLOCK
ENABLE
Q5
Q3
C3
C2
C1
Q4
Q2
Q1
D3
A3
A2
A1
REFRESH
TIMER
ONE-
SHOT
10
4
+ –
LT3420
R2
R1
PRIMARY
SECONDARY
+
0.014
Ω
0.25
Ω
20mV
10mV
DRIVER
POWER DELIVERY BLOCK
T1
1:12
D1
C4
PHOTOFLASH
CAPACITOR
BLOCK DIAGRA S
3420 F04
+ –
R
S
Q
1V
REFERENCE
5
8
9
2
3
1
6
7
MASTER
LATCH
QQ
S
R
DONE
VBAT
VBAT
RFB
SW
GND
RREF
SEC
VCC
VCC
VOUT
CHARGE
CHIP
ENABLE
CT
BLOCK
ENABLE
Q5
Q3
C3
C2
C1
Q4
Q1
D3
A3
A2
A1
REFRESH
TIMER
ONE-
SHOT
10
4
+ –
LT3420-1
R2
R1
PRIMARY
SECONDARY
+
0.02
Ω
0.66
Ω
20mV
10mV
DRIVER
POWER DELIVERY BLOCK
T1
1:10
D1
C4
PHOTOFLASH
CAPACITOR
ONE-
SHOT
Figure 4. Block Diagram, LT3420-1



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