LTM4641
TYPICAL APPLICATIONS
V
IN
4V TO 38V
(4.5V START-UP)
C
+
IN(MLCC)
C
IN(BULK)
10µF
50V
×2
50V
V
V
V
SW
V
1.8V
10A
ING INGP
INH
OUT
V
INL
V
OUT
C
OUT(MLCC)
R
fSET
47µF
10V
×6
2M
CROWBAR
f
SET
UVLO
HYST
FCB
LATCH
R
SET1A
8.2k
+
V
ORB
+
V
OSNS
LOCAL HIGH
FREQUENCY
DECOUPLING
LTM4641
R
R
SET2
SET1B
8.2k
LOAD
INTV
DRV
CC
16.4k
–
–
V
OSNS
CC
V
IOVRETRY
OVLO
ORB
TEMP
1V
REF
OVPGM
OTBH
PGOOD
RUN
TRACK/SS
TMR
COMP SGND GND
C
C
TMR
N/U
SS
4641 F45
4.7nF
SGND CONNECTS TO GND INTERNAL TO MODULE. KEEP SGND
ROUTES/PLANES SEPARATE FROM GND ON MOTHERBOARD
Figure 45. 4VIN to 38VIN, LTM4641 Basic Configuration, 1.8V Output at 10A
4.5V START-UP
OPERATION
MSP
C
+
C
IN(MLCC)
IN(BULK)
UP TO 38V
IN
10µF
100µF
50V
50V
×2
V
V
V
SW
V
ING INGP
INH
OUT
V
f
V
3.3V
INL
OUT
C
FFA
100µF
6.3V
×3
10A
100pF
MCB
CROWBAR
SET
UVLO
HYST
FCB
LATCH
R
SET1A
8.2k
+
V
ORB
+
V
OSNS
LOCAL HIGH
FREQUENCY
DECOUPLING
LTM4641
R
R
SET2
SET1B
8.2k
LOAD
INTV
DRV
CC
4.7k
–
–
V
OSNS
CC
C
V
FFB
IOVRETRY
OVLO
ORB
100pF
TEMP
1V
REF
OVPGM
OTBH
PGOOD
RUN
MCB: NXP PSMN5R0-30YL
MSP: NXP PSMN7R0-60YS
TRACK/SS
TMR
COMP SGND GND
C
SS
4641 F46
22nF
SGND CONNECTS TO GND INTERNAL TO MODULE. KEEP SGND
ROUTES/PLANES SEPARATE FROM GND ON MOTHERBOARD
Figure 46. LTM4641 Delivering 3.3V Output at 10A, and Providing Robust Output
Overvoltage Protection from up to 38VIN. Dropout Operation May Occur Below 4.8VIN. See
Figure 11 to Implement Custom UVLO Rising/Falling Settings to Avoid Dropout Operation
4641f
48
Linear [ Linear ]
