Datasheet

LTM4644/LTM4644-1
8
Rev. F
For more information www.analog.com
BLOCK DIAGRAM
4644 BD
POWER CONTROL
CLKOUT
FB1
CLKIN
MODE1
TRACK/SS1
RUN1
COMP1
INTV
CC1
INTERNAL
FILTER
INTERNAL
COMP
V
OUT1
1µF
0.22µF
1µH
100k
100k
100k
100k
10µF
47µF
FREQ1
162k
60.4k
(*LTM4644 ONLY)
60.4k
(*LTM4644 ONLY)
60.4k
(*LTM4644 ONLY)
60.4k
(*LTM4644 ONLY)
60.4k
0.1µF
V
IN
4V TO 14V
V
OUT1
1.2V
4A
INTV
CC1
PGOOD1
SV
IN1
V
IN1
V
OUT1
GND
SGND
GND
POWER CONTROL
FB2
MODE2
TRACK/SS2
RUN2
COMP2
INTV
CC2
INTERNAL
FILTER
INTERNAL
COMP
V
OUT2
1µF
0.22µF
1µH
10µF
47µF
FREQ2
162k
40.2k
0.1µF
V
IN
V
OUT2
1.5V
4A
INTV
CC2
PGOOD2
SV
IN2
V
IN2
V
OUT2
GND
POWER CONTROL
FB3
MODE3
TRACK/SS3
RUN3
COMP3
INTV
CC3
INTERNAL
FILTER
INTERNAL
COMP
V
OUT3
1µF
0.22µF
1µH
10µF
47µF
FREQ3
162k
30.1k
0.1µF
V
IN
V
OUT3
1.8V
4A
INTV
CC3
PGOOD3
SV
IN3
V
IN3
V
OUT3
GND
POWER CONTROL
FB4
MODE4
TRACK/SS4
RUN4
COMP4
INTV
CC4
INTERNAL
FILTER
INTERNAL
COMP
V
OUT4
1µF
0.22µF
1µH
10µF
47µF
1µF
FREQ4
162k
90.9k
0.1µF
V
IN
V
OUT4
1V
4A
INTV
CC4
PGOOD4
SV
IN4
V
IN4
V
OUT4
GND
TEMP
CLKOUT
*LTM4644-1 DOES NOT INCLUDE 60.4k RESISTOR
CLKOUT
CLKIN
CLKOUT
CLKIN
CLKOUT
CLKIN
1µF
1µF
1µF
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.