Datasheet

LTC3880/LTC3880-1
112
3880fc
For more information www.linear.com/LTC3880
TYPICAL APPLICATIONS
High Efficiency 425kHz 3-Phase 1.8V and 1-Phase 2.5V Step-Down Converter
L0 TO L3: VISHAY IHLP-4040DZ-11 0.56µH, 1µH M1, M2, M5, M6: INFINEON BSC050N03LS
M3, M4, M7, M8: INFINEON BSC010NE2LSI
V
IN
SGND
TG0
0.1µF
0.1µF
1µF
0.22µF 0.22µF
4700pF
22µF
10µF
+
530µF
D2
M2 M4
24.9k 11.3k
V
DD25
M1
M3
2.55k
1.58k
1µF 1µF
L1
0.56µH
L2
0.56µH
L3
1µH
L0
0.56µH
D1
TG1
BG0 SYNC
10k
1µF
1µF
1.58k 1.58k
15.8k
20k 17.8k
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
–
V
OUT0
1.8V
75A
+
530µF
220pF
10nF
10nF
V
IN
SGND
TG0
0.1µF
0.1µF
1µF
2200pF
2200pF
220pF
0.22µF
1µF
0.22µF
22µF
V
IN
6V TO 24V
10µF
+
530µF
D4
M6 M8
24.9k
11.3k
V
DD25
M5
M7
V
OUT1
2.5V
25A
4.99k
6.04k
1µF
D3
TG1
BG0 SYNC
20k
1µF
1µF
2k
15k
20k 15k
GPIO0 GPIO1 SDA SCL ALERT RUN0
10k
FREQ_CFG
V
OUT0_CFG
V
OUT1_CFG
V
TRIM0_CFG
V
TRIM1_CFG
ASEL
RUN1
WP
1.58k
10k 10k 10k 10k 10k
5k 5k
4.99k
2k
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
3880 TA06
220pF
10nF
10nF