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LT3668 Datasheet(PDF) 11 Page - Linear Technology

Part # LT3668
Description  40V 400mA Step-Down Switching Regulator with Dual Fault Protected Tracking LDOs
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3668 Datasheet(HTML) 11 Page - Linear Technology

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LT3668
11
3668fa
For more information www.linear.com/LT3668
BLOCK DIAGRAM
ERROR
AMPLIFIER
OUT3
EN3/
ILIM3
1V
0.4V
0.4V
80
80
1V
LDO
DISABLE
LDO
DISABLE
OUT2
PG
IN2
ADJ2
ADJ3
VOUT2
C4
VIN1
C1
C5
VOUT3
ERROR
AMPLIFIER
CURRENT LIMIT
AMPLIFIER
CURRENT LIMIT
AMPLIFIER
+ –
LDO
DRIVER
+
–
ERROR
AMPLIFIER
+
–
10
9
7
IN3/
BD
5
11
EN2/
ILIM2
12
14
6
B00ST
2
SW
3668 BD
1
DA
16
13
+
–
+
–
LDO
DRIVER
INTERNAL REF
SLOPE COMP
Burst Mode
DETECT
OSCILLATOR
250kHz TO 2.2MHz
1.2V
IN1
15
EN
1.32V
VC
RT
4
RT
1.08V
+
–
3
R
S
Q
BOOST
DIODE
CATCH DIODE
CURRENT LIMIT
C2
VOUT1
C3
L1
D1
+
–
8
FB1
R2
R1
17
GND



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