LTC3855EFE#TRPBF Linear Technology, LTC3855EFE#TRPBF Datasheet - Page 39

• Manufacturer Part Number: LTC3855EFE#TRPBF
• Description: IC CTLR DC/DC DUAL 2PH 38TSSOP
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3855EFE#TRPBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.6 ~ 3.3 V, 0.6 ~ 12.5 V
• Current - Output: 25A
• Frequency - Switching: 250kHz ~ 770kHz
• Voltage - Input: 4.5 ~ 38 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 38-TSSOP Exposed Pad, 38-eTSSOP, 38-HTSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

Typical applicaTions
13.3k
L1, L2, L3: VITEC 59PR9874
L4: WURTH 744311220
C
C
OUT1
OUT2
90.9k
, C
: KEMET T530D477M2R5ATE006
0.1µF
OUT3
20k
20k
: TDK C3225X5R0J107M
3300pF
100pF
330pF
0.1µF
100
10k
2k
4700pF
0.1µF
Figure 23. Triple Phase 1V, 50A Supply with Auxillary 3.3V, 5A Rail, f
1nF
100
100
100
TK/SS1
I
V
SGND
V
I
TK/SS2
SENSE2
SENSE2
DIFFP
TK/SS1
I
V
SGND
V
I
TK/SS2
SENSE2
SENSE2
DIFFP
TH1
TH2
TH1
TH2
FB1
FB2
FB1
FB2
1nF
1nF
+
–
+
–
PGOOD3.3V
RUN1
RUN2
PGOOD1V
100
RUN1
100
RUN1
LTC3855
LTC3855
100k
100k
100k
100k
BOOST1
BOOST2
BOOST1
BOOST2
EXTV
EXTV
PGND1
INTV
PGND2
PGND1
INTV
PGND2
BG1
BG2
BG1
BG2
TG1
TG1
V
V
CC
CC
CC
CC
IN
IN
0.1µF
0.1µF
4.7µF
4.7µF
0.1µF
0.1µF
CMDSH-3
CMDSH-3
CMDSH-3
CMDSH-3
2.2
2.2
1µF
1µF
SW
M1
RJK0305DPB
M2
RJK0330DPB
M3
RJK0305DPB
M4
RJK0330DPB
M5
RJK0305DPB
M6
RJK0330DPB
0.3µH
0.3µH
0.3µH
M7
S4816BDY
= 400kHz
L1
L2
L3
10µF
10µF
3
0.002
0.002
0.002
2.49k
1%
1%
1%
2.2µH
4.99k
L4
+
3855 F23
LTC3855
270µF
16V
C
100µF
6.3V
C
100µF
6.3V
OUT3
3
OUT1
V
4.5V TO
14V
IN
V
3.3V
5A
OUT2
+

C
470µF
2.5V
OUT2
4
3855f
V
1V
50A
OUT1