LT3741 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT3741 Datasheet PDF : 24 Pages
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Block Diagram (QFN Package)
VIN
402k
133k
100nF
EN/UVLO
1
VREF
2
SYNC
82.5k
SYNC
13
RT
12
2V REFERENCE
OSCILLATOR
–
RQ
+
S
PWM
COMPARATOR
VIN
20
INTERNAL
REGULATOR
AND
UVLO
VCC_INT
19
HIGH SIDE
DRIVER
CBOOT
17
HG 15
SYNCRONOUS
CONTROLLER
SW
16
LG
18
LOW SIDE
DRIVER SENSE+
8
100nF
40.2k
5.6µF
1.5V
+
CTRL1
+
11µA
5
SS
6
CTRL2
3
VC
10
–
CTRL BUFFER
3k
CURRENT
MIRROR
gm AMP
gm = 450µA/V
RO = 4M
IOUT = 40µA
90k
1.21V
VOLTAGE
REGULATOR
AMP
gm = 850µA/V
Figure 1. Block Diagram
SENSE–
9
FB
7
3741 F01
LT3741
VIN
1µF
47µF
10µF
0.1µF
2.4µH
RS
5mΩ
VOUT
150µF
s2
40.2k
10k
3741f
11
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