LT3759
32
3759fc
For more information www.linear.com/3759
LINEAR TECHNOLOGY CORPORATION 2011
LT 0113 REV C • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/3759
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LT3757 Boost, Flyback, SEPIC and Inverting
Controller
2.9V ≤ V
IN
≤ 40V, Current Mode Control, 100kHz to 1MHz Programmable Operation
Frequency, 3mm × 3mm DFN-10 and MSOP-10E Packages
LT3758 Boost, Flyback, SEPIC and Inverting
Controller
5.5V ≤ V
IN
≤ 100V, Current Mode Control, 100kHz to 1MHz Programmable Operation
Frequency, 3mm × 3mm DFN-10 and MSOP-10E Packages
LT3957 Boost, Flyback, SEPIC and Inverting
Converter with 5A, 40V Switch
3V ≤ V
IN
≤ 40V, Current Mode Control, 100kHz to 1MHz Programmable Operation
Frequency, 5mm × 6mm QFN Package
LT3958 Boost, Flyback, SEPIC and Inverting
Converter with 3.3A, 84V Switch
5V ≤ V
IN
≤ 80V, Current Mode Control, 100kHz to 1MHz Programmable Operation
Frequency, 5mm × 6mm QFN Package
LTC3872 No R
SENSE
Boost Controller 2.75V ≤ V
IN
≤ 9.8V, TSOT-23 and 2mm × 3mm DFN-8
1.8V to 5V Input, –5V/2A Output Inverting Converter
Efficiency vs Output Current
SENSE
DRIVE
LT3759
V
IN
V
IN
1.8V TO 5V
C
IN
47
µF
10V
X5R
27.4k
300kHz
C
DC
4.7µF ×2
25V, X5R
1µF
16V
X5R
GATE
FBX
GND
INTV
CC
EN/UVLO
SYNC
PGOOD
RT
SS
VC
L1B
3.3µH
L1A, 3.3µH
1:1
59k
124k
0.1µF
9.1k
10nF
5mΩ
0.5W
100k
TIE TO GND
IF NOT USED
C
VCC
4.7µF
10V
X5R
V
OUT
–5V
1A, 1.8V ≤ V
IN
≤ 2.5V
2A, 2.5V < V
IN
≤ 5V
C
OUT
100µF
6.3V, X5R
×2
3759 TA07a
D2
M1
D1
M1: VISHAY SILICONIX Si74116DY
L1A, L1B: COILTRONICS DRQ127-3R3
D1: VISHAY 6CWQ03FN
D2: PHILIPS PMEG2005EJ
84.5k
15.8k
OUTPUT CURRENT (A)
0
EFFICIENCY (%)
95
100
1.5
3759 TA07b
0.5 1
2.52
75
80
85
90
70
V
IN
= 5V
V
IN
= 2.5V
