LTC3865EFE#PBF Linear Technology, LTC3865EFE#PBF Datasheet - Page 34

• Manufacturer Part Number: LTC3865EFE#PBF
• Description: IC BUCK SYNC ADJ DUAL 38TSSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3865EFE#PBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.6 ~ 5 V
• 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: 15V
• No. Of Outputs: 2
• Output Voltage: 5V
• Output Current: 25A
• No. Of Pins: 38
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 1 - Unlimited
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -

TYPICAL APPLICATIONS
LTC3865/LTC3865-1
34
100
20
10
90
80
70
60
50
40
30
C
L1, L2: VISHAY IHLP4040DZERR47M11
0
OUT1
+
0
V
IN
RJK0305DPB
2mΩ
, C
= 12V
Effi ciency vs Load Current
0.47μH
C
220μF
OUT2
OPERATION
Burst Mode
OUT1
L1
FORCED CONTINUOUS
MODE
: SANYO 4TPE 220μF
LOAD CURRENT (A)
PULSE-SKIPPING
MODE
Figure 17. High Current, Single Output, 1.2V/30A Converter Using Sense Resistors
1
1.21k
1%
6800pF
100Ω
100Ω
RJK0330DPB
0.1μF
4.7μF
10μF
35V
10
0.1μF
100pF
D3
3865 F17b
2.2Ω
0.1μF
100
MODE/PLLIN
I
VID11
VID12
TG1
BOOST1
SW1
BG1
SENSE1
SENSE1
V
I
V
RUN1
LIM
TH1
TK/SS1
OSENSE1
IN
PGOOD
+
–
LTC3865
1μF
SGND
EXTV
CC
V
SENSE2
SENSE2
BOOST2
OSENSE2
TK/SS2
INTV
VID21
VID22
PGND
RUN2
FREQ
SW2
BG2
I
TG2
TH2
0A TO 20A/DIV
CC
AC-COUPLED
+
–
200mV/DIV
5A/DIV
I
V
LOAD
OUT
RJK0330DPB
I
L
V
V
162k
RUN1
IN
OUT
Load Step (Forced Continuous Mode)
D4
10μF
35V
0.1μF
= 12V
= 1.2V
0Ω
0.1μF
RUN2
RJK0305DPB
100Ω
100Ω
0.47μH
+
L2
40μs/DIV
+
22μF
50V
2mΩ
3865 F17a
C
220μF
1.2V
30A
OUT2
V
7V TO 20V
IN
3865
F17c
3865fb