Datasheet

LTC3786
34
3786fc
For more information www.linear.com/LTC3786
RELATED PARTS
TYPICAL APPLICATION
High Efficiency 48V Boost Converter
SENSE
+
SENSE
TG
C
B
0.1µF
C
ITHA
220pF
LTC3786
C
SS
0.1µF
C
ITH
15nF
C
IN
6.8µF
×4
MTOP
MBOT
D
C
INT
4.7µF
3786 TA02
V
OUT
48V
2A*
V
IN
5V TO 38V
R
SENSE
8mΩ
L
16µH
BOOST
SW
VBIAS
BG
GND
PGOOD
INTV
CC
VFB
ITH
SS
R
A
12.1k
100k
R
ITH
8.66k
R
S
475k
FREQ
RUN
PLLIN/MODE
C
OUTA
6.8µF
×4
C
OUTB
220µF
+
C
IN
, C
OUTA
: TDK C4532X7R1H685K
C
OUTB
: SANYO 63CE220KX
D: BAS170W
L: PULSE PA2050.163NL
MBOT, MTOP: RENESAS RJK0652DPB
*WHEN V
IN
< 13V, MAXIMUM LOAD CURRENT AVAILABLE IS REDUCED.
PART NUMBER DESCRIPTION COMMENTS
LTC3788/LTC3788-1 Dual Output, Low I
Q
Multiphase Synchronous Boost
Controller
4.5V (Down to 2.5V after Start-up) ≤ V
IN
≤ 38V, V
OUT
up to 60V, 50kHz
to 900kHz Fixed Operating Frequency, 5mm × 5mm QFN-32, SSOP-28
LTC3787 Single Output, Low I
Q
Multiphase Synchronous Boost
Controller
4.5V (Down to 2.5V after Start-up) ≤ V
IN
≤ 38V, V
OUT
up to 60V, 50kHz
to 900kHz Fixed Operating Frequency, 4mm × 5mm QFN-28, SSOP-28
LTC3769 60V Low I
Q
Synchronous Boost Controller 4.5V (Down to 2.3V after Start-up) ≤ V
IN
≤ 60V, V
OUT
up to 60V,
50kHz to 900kHz Fixed Operating Frequency, 4mm × 4mm QFN-24,
TSSOP-20
LTC3784 60V Single Output, Low I
Q
Multiphase Synchronous
Boost Controller
4.5V (Down to 2.3V after Start-up) ≤ V
IN
≤ 60V, V
OUT
up to 60V, 50kHz
to 900kHz Fixed Operating Frequency, 4mm × 5mm QFN-28, SSOP-28
LTC3862/LTC3862-1 Single Output, Multiphase Current Mode Step-Up DC/DC
Controller
4V ≤ V
IN
≤ 36V, 5V or 10V Gate Drive, 75kHz to 500kHz Fixed
Operating Frequency, SSOP-24, TSSOP-24, 5mm × 5mm QFN-24
LT3757/LT3758 Boost, Flyback, SEPIC and Inverting Controller 2.9V ≤ V
IN
≤ 40V/100V, 100kHz to 1MHz Fixed Operating Frequency,
3mm × 3mm DFN-10 and MSOP-10E
LTC1871, LTC1871-1,
LTC1871-7
Wide Input Range, No R
SENSE
Low I
Q
Boost, Flyback and
SEPIC Controller
2.5V ≤ V
IN
≤ 36V, 50kHz to 1MHz Fixed Operating Frequency,
MSOP-10
LTC3859AL Low I
Q
, Triple Output Buck/Buck/Boost Synchronous
DC/DC Controller
All Outputs Remain in Regulation Through Cold Crank, 4.5V(Down to
2.5V after Start-up) ≤ V
IN
≤ 38V, V
OUT(BUCKS)
Up to 24V, V
OUT(BOOST)
Up to 60V, I
Q
= 28µA
LTC3789 High Efficiency Synchronous 4-Switch Buck-Boost
DC/DC Controller
4V ≤ V
IN
≤ 38V, 0.8V ≤ V
OUT
≤ 38V, SSOP-28, 4mm × 5mm QFN-28,
SSOP-28
LT8710 Synchronous SEPIC/Inverting/Boost Controller with
Output Current Control
4V ≤ V
IN
≤ 80V, SSOP-28, TSSOP-20
LINEAR TECHNOLOGY CORPORATION 2010
LT 1117 REV C • PRINTED IN USA
www.linear.com/LTC3786
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