LTC3855EFE#PBF Linear Technology, LTC3855EFE#PBF Datasheet - Page 40

• Manufacturer Part Number: LTC3855EFE#PBF
• Description: IC BUCK SYNC ADJ 25A DL 38TSSOP
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3855EFE#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 ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 38-TSSOP Exposed Pad, 38-eTSSOP, 38-HTSSOP
• Primary Input Voltage: 38V
• No. Of Outputs: 2
• Output Voltage: 12.5V
• No. Of Pins: 38
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 1 - Unlimited
• Switching Frequency Max: 770kHz
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

LTC3855
Typical applicaTions
0
V
OUT1
3.3V
5A
+
L1: TDK RLF 7030T-2R2M5R4
L2: TDK ULF10045T-3R3N6R9
C
C
OUT1
OUT2
8mΩ
2.2µH
C
220µF
OUT1
L2
90.9k
15pF
: SANYO 4TPE220MF
: SANYO 6TPE150MI
1%
Si4816BDY
M1
20k
1%
10k
1%
1000pF
4.7µF
Figure 24. 3.3V/5A, 5V/5A Converter Using Sense Resistors
0.1µF
10Ω
10Ω
100pF
1000pF
D3
0.1µF
SW1
MODE/PLLIN
I
RUN1
DIFFP
DIFFN
DIFFOUT
TG1
BOOST1
BG1
SENSE1
SENSE1
V
I
LIM
TK/SS1
TH1
FB1
V
IN
2.2Ω
+
–
LTC3855
PGOOD INTV
SGND
1µF
SENSE2
SENSE2
CLKOUT
BOOST2
TK/SS2
EXTV
RUN2
PGND
FREQ
SW2
V
CC
TG2
BG2
I
TH2
FB2
CC
+
–
0.1µF
D4
122k
1%
0.1µF
1000pF
10Ω
10Ω
15k
1%
1000pF
100pF
Si4816BDY
M2
20k
1%
10pF
147k
1%
3.3µH
3855 F24
22µF
50V
L2
8mΩ
+
V
7V TO
24V
IN
C
150µF
V
5V
5A
OUT2
OUT2
3855f