LTC3649
TYPICAL APPLICATION
5VOUT with Remote Sensing
0.1µF
CABLE
RESISTANCE
3.3µH
0.1Ω
V
V
OUT
IN
V
BOOST
OUT
IN
SW
5V
24V
RUN
EXTV
CC
47µF
×2
47µF
22µF
LTC3649
0.1Ω
MODE/SYNC
PGOOD
PGDFB
PGND
V
INREG
INTV
CC
SGND
R
ISET
ITH
T
2k
100pF
2.2µF
100k
100k
10nF
1.5nF
3649 TA06
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
= 4V, V
3mm × 3mm DFN-12
LTC3600
15V, 1.5A Synchronous Rail-to-Rail Single Resistor Step-Down
Regulator
V
= 15V, V
= 0V, MSOP-12,
IN(MIN)
IN(MAX)
OUT(MIN)
LTC3892/
LTC3892-1
60V, Low I , Dual 2-Phase Synchronous Step-Down
DC/DC Controller with 99% Duty Cycle
PLL Fixed Frequency 50kHz to 900kHz, 4.5V ≤ V ≤ 60V,
Q
IN
0.8V ≤ V
≤ 0.99V , I = 29µA
OUT IN Q
LTC3891
LT®8620
LT8641
60V, Low I , Synchronous Step-Down DC/DC Controller with
99% Duty Cycle
PLL Fixed Frequency 50kHz to 900kHz, 4V ≤ V ≤ 60V,
IN
Q
0.8V ≤ V
≤ 24V, I = 50µA
OUT Q
65V, 2.5A, 96% Efficiency, 2.2MHz Synchronous Micropower
V
= 3.4V, V
= 65V, V
= 0.97V, I = 2.5µA,
IN(MIN)
IN(MAX)
OUT(MIN) Q
Step-Down DC/DC Converter with I = 2.5µA
I
SD
< 1µA, MSOP-16E 3mm × 5mm QFN-24
Q
65V, 4A, 96% Efficiency, 3MHz Synchronous Micropower
V
= 3.4V, V
< 1µA, 3mm × 4mm QFN-18
= 42V, V
= 0.97V, I = 2.5µA,
Q
IN(MIN)
IN(MAX)
OUT(MIN)
Step-Down DC/DC Converter with I = 2.5µA
I
SD
Q
LT8610A/
LT8610AB
42V, 3.5A, 96% Efficiency, 2.2MHz Synchronous Micropower
V
= 3.4V, V
< 1µA, MSOP-16E
= 42V, V
= 0.97V, I = 2.5µA,
Q
IN(MIN)
IN(MAX)
OUT(MIN)
Step-Down DC/DC Converter with I = 2.5µA
I
SD
Q
LT8610AC
42V, 3.5A, 96% Efficiency, 2.2MHz Synchronous Micropower
V
= 3V, V
< 1µA, MSOP-16E
= 42V, V = 0.8V, I = 2.5µA,
OUT(MIN) Q
IN(MIN)
IN(MAX)
Step-Down DC/DC Converter with I = 2.5µA
I
SD
Q
LT8611
42V, 2.5A, 96% Efficiency, 2.2MHz Synchronous Micropower
V
= 3.4V, V
<1µA, 3mm × 5mm QFN-24
= 42V, V
= 0.97V, I = 2.5µA,
OUT(MIN) Q
IN(MIN)
IN(MAX)
Step-Down DC/DC Converter with I = 2.5µA and Input/Output
I
SD
Q
Current Limit/Monitor
LT8612
LT8614
LT8616
42V, 6A, 96% Efficiency, 2.2MHz Synchronous Micropower
V
= 3.4V, V
<1µA, 3mm × 6mm QFN-28
= 42V, V
= 0.97V, I = 3.0µA,
Q
IN(MIN)
IN(MAX)
OUT(MIN)
OUT(MIN)
OUT(MIN)
Step-Down DC/DC Converter with I = 2.5µA
I
SD
Q
42V, 4A, 96% Efficiency, 2.2MHz Synchronous Micropower
V
= 3.4V, V
<1µA, 3mm × 4mm QFN-18
= 42V, V
= 0.97V, I = 2.5µA,
Q
IN(MIN)
IN(MAX)
Step-Down DC/DC Converter with I = 2.5µA
I
SD
Q
42V, Dual 2.5A + 1.5A, 95% Efficiency, 2.2MHz Synchronous
V
= 3.4V, V
= 42V, V
= 0.8V, I = 5µA,
Q
IN(MIN)
IN(MAX)
Micropower Step-Down DC/DC Converter with I = 5µA
I
SD
<1µA, TSSOP-28E, 3mm × 6mm QFN-28
Q
3649fb
LT 0517 REV B • PRINTED IN USA
www.linear.com/LTC3649
26
LINEAR TECHNOLOGY CORPORATION 2015
For more information www.linear.com/LTC3649
Linear [ Linear ]
