Datasheet

LTC3880/LTC3880-1
113
3880fc
For more information www.linear.com/LTC3880
TYPICAL APPLICATIONS
High Efficiency 425kHz 4-Phase 1.0V Step-Down 1V Converter with an LTC3880 and LTC3870 PSM Slave
L0 TO L3: VISHAY IHLP-4040DZ-11 0.36µH M1, M2, M5, M6: INFINEON BSC050N03LS
M3, M4, M7, M8: INFINEON BSC010NE2LSI
V
IN
SGND
TG0
0.1µF
0.1µF
1µF
4700pF
220pF
0.22µF
0.22µF
22µF
10µF
+
530µF
D2
M2 M4
M1
M3
2.55k
1.58k
1µF
L1
0.36µH
L2
0.36µH
L3
0.36µH
L0
0.36µH
D1
TG1
BG0 SYNC
1µF
1µF
1.58k 1.58k
GPIO0 GPIO1 SDA SCL ALERT RUN0
FREQ_CFG
V
OUT0_CFG
V
OUT1_CFG
V
TRIM0_CFG
V
TRIM1_CFG
ASEL
RUN1
WP
1.58k
1.58k
SHARE_CLK
V
DD33
BG1
PGND
BOOST0 BOOST1 SW0 SW1
INTV
CC
LTC3880
TSNS0 TSNS1 I
THO
I
TH1
I
SENSEO
+
I
SENSE1
+
V
SENSEO
+
V
SENSE1
V
SENSEO
–
I
SENSEO
–
I
SENSE1
–
+
530µF
10nF
10nF
V
IN
SGND
TG0
0.1µF
0.1µF
1µF
220pF
0.22µF
0.22µF
22µF
V
IN
6V TO 24V
10µF
+
530µF
D4
M6 M8
100k
FREQ
M5
M7
V
OUT1
1.0V 80A
1µF
1µF
D3
TG1
BG0 SYNC EXTV
CC
1µF
1.58k
FAULT0 FAULT1 MODE0 MODE1 RUN0
10k
I
LIM
PHASMD
RUN1
1.58k
10k 10k 10k
5k 5k
4.99k
1.58k
BG1
PGND
BOOST0 BOOST1 SW0 SW1
INTV
CC
LTC3870
I
THO
I
TH1
I
SENSEO
+
I
SENSE1
+
I
SENSEO
–
I
SENSE1
–
+
530µF
3880 TA07
24.9k 4.32k
V
DD25
20k 15k
20k 15k