LTC3855IFE#PBF Linear Technology, LTC3855IFE#PBF Datasheet - Page 36

• Manufacturer Part Number: LTC3855IFE#PBF
• Description: IC CTLR DC/DC MULTIPHASE 38SSOP
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3855IFE#PBF

• 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 ~ 125°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: -

LTC3855
Typical applicaTions

20k
20k
100pF
L1, L2: PULSE PA0513.441NLT
C
C
OUT1
OUT2
: MURATA GRM31CR60J107ME39L
: SANYO 2R5TPE330M9
0.1µF
100
5.9k
2200pF
1nF
100
100
Figure 20. High Efficiency Dual Phase 1.2V, 40A Supply, f
TK/SS1
I
V
SGND
V
I
TK/SS2
SENSE2
SENSE2
DIFFP
TH1
TH2
FB1
FB2
1nF
+
–
RUN
100
PGOOD
RUN
LTC3855
250kHz
100k
BOOST1
BOOST2
EXTV
PGND1
INTV
PGND2
TG1
BG1
BG2
V
CC
CC
IN
0.1µF
4.7µF
0.1µF
CMDSH-3
CMDSH-3
0.1µF
2.2
SW
= 250kHz
M1
RJK0305DPB
M2
RJK0330DPB
M3
RJK0305DPB
M4
RJK0330DPB
2
2
0.44µH
0.44µH
L1
L2
10µF
4
0.001
0.001
1%
1%
+
270µF
16V
C
100µF
6.3V
OUT1
4
+
3855 F20
C
330µF
2.5V
4
OUT2
V
4.5V TO
14V
V
1.2V
40A
IN
OUT
3855f