Datasheet

LTC3786
34
3786fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2010
LT 0911 REV A • PRINTED IN USA
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 2-Phase Dual Output Synchronous Step-Up Controllers
4.5V ≤ V
IN
≤ 38V, V
OUT
Up to 60V, 50kHz to 900kHz, 5mm × 5mm
QFN-32 and SSOP-28 Packages
LTC3787 2-Phase Single Output Synchronous Boost Controller
4.5V ≤ V
IN
≤ 38V, V
OUT
Up to 60V, 50kHz to 900kHz, 5mm × 5mm
QFN-28 and SSOP-28 Packages
LTC3859 Low I
Q
, Triple Output, Buck/Buck/Boost Synchronous
Controller
4.5V ≤ V
IN
≤ 38V, Boost Output Voltage Up to 60V, 50kHz to 900kHz,
5mm × 7mm QFN-38 and TSSOP-38 Packages
LTC3862/LTC3862-1 Multiphase Current Mode Step-Up DC/DC Controllers 4V ≤ V
IN
≤ 36V, 5V or 10V Gate Drive, 75kHz to 500kHz, SSOP-24,
TSSOP-24, 5mm × 5mm QFN-24
LTC3813/LTC3814-5 100V/60V Maximum V
OUT
Current Mode Synchronous
Step-Up DC/DC Controllers
No R
SENSE
, Large 1Ω Gate Driver, Adjustable Off-Time, SSOP-28,
TSSOP-16
LTC1871, LTC1871-1,
LTC1871-7
Wide Input Range, No R
SENSE
™ Low Quiescent Current
Flyback, Boost and SEPIC Controllers
Adjustable Switching Frequency, 2.5V ≤ V
IN
≤ 36V, Burst Mode
Operation at Light Load, MSOP-10
LT
®
3757/LT3758 Boost, Flyback, SEPIC and Inverting Controllers V
IN
Up to 40V/100V, 100kHz to 1MHz Programmable Operation
Frequency, 3mm × 3mm DFN-10 and MSOP-10E
LTC3780 High Efficiency Synchronous 4-Switch Buck-Boost DC/
DC Controller
4V ≤ V
IN
≤ 36V, 0.8V ≤ V
OUT
≤ 30V, SSOP-24, 5mm × 5mm QFN-32