LTC3883 Datasheet, PDF (110/112 Pages) Linear Technology – Single Phase Step-Down DC/DC Controller with Digital Power System Management

LTC3883/LTC3883-1
Typical ApplicationS
High Efficiency 3-Phase 425kHz 1.8V Step-Down Converter with Input Current Sense
V_IN
6V TO 14V
5mΩ
100Ω _1µF 100Ω
10nF
10nF
3Ω
10µF
10k
10k
PMBus
INTERFACE
10k
10k
10k
10k
10k
5k
1.0µF
1.0µF
10µF
INTV_CC
TG
LTC3883
I_{IN_SNS}
V_{IN_SNS}
BOOST
SW
BG
PGND
V_IN
PGOOD
SDA
V_{OUT_CFG}
SCL V_{TRIM_CFG}
ALERT
ASEL
RUN FREQ_CFG
SHARE_CLK
GPIO
SYNC
WP
I_SENSE+
I_SENSE–
V_SENSE+
V_SENSE–
V_DD25
TSNS
V_DD33
I_TH
GND
22µF
1µF
D1
50V
M1
0.1µF
M2
V_DD25
24.9k
11.3k
20k
17.8k
2200pF
4.99k
MMBT3906
10nF
L0
0.56µH
1.4k
1µF
1.4k
0.22µF
+ _COUT1
530µF
V_OUT
1.8V
50A
10µF
D2
M3
0.1µF
L1
0.56µH
M5
1.4k
1µF
1µF
1.4k
+ _COUT2
530µF
MMBT3906
10µF
0.22µF
V_IN INTV_CC
TG0
TG1
LTC3880
BOOST0
BOOST1
SW0
SW1
BG0
BG1
V_DD33
PGND
SYNC
SDA
SCL
ALERT
V_DD25
GPIO0
GPIO1
SHARE_CLK
RUN0
RUN1
WP
V_{OUT0_CFG}
V_{OUT1_CFG}
V_{TRIM0_CFG}
V_{TRIM1_CFG}
ASEL
FREQ_CFG
TSNS0
I_SENSE0+
TSNS1
I_SENSE1+
I_SENSE0–
V_SENSE0+
V_SENSE0–
I_TH0
I_SENSE1–
V_SENSE1
I_TH1
GND
1µF
22µF
D3
M4
0.1µF
M6
L2
0.56µH
1.4k
1µF
24.9k 10k
20k
1µF
11.3k 15.8k 17.8k
0.22µF 1.4k
100pF
MMBT3906
10nF
+ _COUT3
530µF
D1-D3: CENTRAL CMDSH-3TR
L0-L2: VISHAY IHLP-4040DZ-11 0.56µH
M1, M3, M4: INFINEON BSC050NE2LS C_OUT1, C_OUT2, C_OUT3: 330μH SANYO 4TPF330ML,
M2, M5, M6: INFINEON BSC010NE2LSI
2× 100µF AVX 12106D107KAT2A
110
3883 TA08
3883f