LTC3883 Datasheet, PDF (109/112 Pages) Linear Technology – Single Phase Step-Down DC/DC Controller with Digital Power System Management

LTC3883/LTC3883-1
Typical ApplicationS
High Efficiency 500kHz 2-Phase 1.8V Step-Down Converter with Sense Resistors
V_IN
6V TO 18V
5mΩ
10µF
INTV_CC
100Ω _1µF 100Ω
TG
LTC3883
I_{IN_SNS} BOOST
10nF
3Ω
10nF
V_{IN_SNS}
SW
BG
PGND
10µF ^10k
10k
PMBus
INTERFACE
10k
10k
10k
10k
10k
5k
V_DD33
1.0µF
1.0µF
V_{IN FREQ_CFG}
PGOOD V_{OUT_CFG}
SDA V_{TRIM_CFG}
SCL
ASEL
ALERT
WP
RUN
SHARE_CLK
GPIO
I_SENSE+
SYNC
I_SENSE–
V_SENSE+
V_SENSE–
V_DD25
TSNS
V_DD33
I_TH
GND
D1
0.1µF
22µF
1µF
50V
M1
0.4µH _0.002Ω
M2
V_DD25
20k
24.9k
17.8k 11.3k
30Ω
1000pF 30Ω
2200pF
4.99k
MMBT3906
10nF
+ _COUT1
530µF
5µΩ
100Ω _1µF 100Ω
10nF
10nF
3Ω
10µF
C_OUT1, C_OUT2: 330μH SANYO 4TPF330ML,
2× 100µF AVX 12106D107KAT2A
D1, D2: CENTRAL CMDSH-3TR
L: VITEC 59PR9875 0.4µH
M1, M3: INFINEON BSC050NE2LS
M2, M4: INFINEON BSC010NE2LSI
10µF
INTV_CC
TG
LTC3883
I_{IN_SNS}
V_{IN_SNS}
BOOST
SW
BG
PGND
V_IN FREQ_CFG
PGOOD V_{OUT_CFG}
SDA V_{TRIM_CFG}
SCL
ASEL
ALERT
WP
RUN
1.0µF
SHARE_CLK
GPIO
I_SENSE+
SYNC
I_SENSE–
V_SENSE+
V_SENSE–
V_DD25
TSNS
V_DD33
I_TH
GND
1.0µF
D2
0.1µF
22µF
1µF
50V
M3
0.4µH
M4
V_DD25
20k
15k
30Ω
1000pF 30Ω
100pF MMBT3906
10nF
0.002Ω
V_OUT
1.8V
40A
+ _COUT2
530µF
3883 TA07
3883f
109