Datasheet

LTM4649
8
4649f
For more information www.linear.com/LTM4649
BLOCK DIAGRAM
Figure 1. Simplified LTM4649 Block Diagram
PIN FUNCTIONS
COMP (F6): Current Control Threshold and Error Amplifier
Compensation Point. The current comparator threshold
increases with this control voltage. Tie all COMP pins
together in parallel operation.
DIFFN (F7): Input to the Remote Sense Amplifier. This pin
connects to the ground remote sense point. Connect to
ground when not used.
DIFFP (F8): Input to the Remote Sense Amplifier. This
pin connects to the output remote sense point. Connect
to ground when not used.
DIFFOUT (G8): Output of the Remote Sense Amplifier.
This pin connects to the V
OUT_LCL
pin for remote sense
applications. Otherwise float when not used.
POWER
CONTROL
1µF
V
OUT
V
IN
1M
10k
0.5%
FREQ
RUN
V
FB
GND
COMP
V
OUT_LCL
R2
R1
MODE
TRACK/SS
R
fSET
115k
6.65k
1%
C
SS
4649 F01
0.35µH
M1
V
OUT
V
OUT
1.5V
10A
V
IN
V
IN
4.5V TO 16V
M2
INTERNAL
COMP
INTERNAL
LOOP
FILTER
INTV
CC
250k
DIFF_OUT
DIFFP
DIFFN
GND
PGOOD
INTV
CC
CLKIN
TEMP
> 1.4V = ON
< 1.1V = OFF
MAX = 5V
–
–
+
+
1µF
+
C
IN
C
OUT
+
10k
INTV
CC
DIFF
AMP