LTC3729EG Linear Technology, LTC3729EG Datasheet - Page 26

• Manufacturer Part Number: LTC3729EG
• Description: IC SW REG SYNC STEP-DOWN 28-SSOP
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3729EG

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 5 V
• Current - Output: 5A
• Frequency - Switching: 1.1MHz
• Voltage - Input: 4 ~ 36 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

LTC3729
TYPICAL APPLICATIONS
26
OPTIONAL
CLOCK IN
SYNC
V
V
SWITCHING FREQUENCY = 400kHz
IN
OUT
: 12V
: 3.3V/90A
0.01µF
0.01µF
47pF
47pF
0.3µF
0.33µF
24k
8.06k, 1%
47k
10k
10k
1nF
1nF
75k
470pF
25.5k, 1%
100pF
6800pF
1000pF
1000pF
1000pF
1000pF
1000pF
1000pF
MI – M18: Si7440DP
L1 – L6: 1µH PANASONIC ETQP6F1R0S
D7 – D12: CENTROL CMDSH-3TR
100pF
100pF
NC
NC
10
11
12
13
14
10
11
12
13
14
10
11
12
13
14
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
RUN/SS
SENSE1
SENSE1
EAIN
PLLFLTR
PLLIN
PHASMD
I
SGND
V
V
V
SENSE2
SENSE2
RUN/SS
SENSE1
SENSE1
EAIN
PLLFLTR
PLLIN
PHASMD
I
SGND
V
V
V
SENSE2
SENSE2
RUN/SS
SENSE1
SENSE1
EAIN
PLLFLTR
PLLIN
PHASMD
I
SGND
V
V
V
SENSE2
SENSE2
TH
TH
TH
Figure 11. High Current 3.3V/90A 6-Phase Application
DIFFOUT
OS
OS
DIFFOUT
OS
OS
DIFFOUT
OS
OS
–
+
–
+
–
+
LTC3729
LTC3729
LTC3729
+
–
–
+
+
–
–
+
+
–
–
+
CLKOUT
BOOST1
BOOST2
CLKOUT
BOOST1
BOOST2
CLKOUT
BOOST1
BOOST2
EXTV
PGOOD
EXTV
PGOOD
EXTV
PGOOD
INTV
INTV
INTV
PGND
PGND
PGND
SW1
SW2
SW1
SW2
SW1
SW2
TG1
BG1
BG2
TG2
TG1
BG1
BG2
TG2
TG1
BG1
BG2
TG2
V
V
V
CC
CC
CC
CC
CC
CC
IN
IN
IN
28
27
26
25
24
23
22
21
20
19
18
17
16
15
28
27
26
25
24
23
22
21
20
19
18
17
16
15
28
27
26
25
24
23
22
21
20
19
18
17
16
15
5V
5V
5V
OUTPUT CAPACITORS: SANYO 6TPB330M
0.47µF
0.47µF
0.47µF
1µF,6.3V
D8
1µF,6.3V
D10
1µF,6.3V
D12
0.47µF
0.47µF
0.47µF
D7
D9
D11
22µF
6.3V
22µF
6.3V
22µF
6.3V
1µF
1µF
1µF
10
10
10
M10
M13
M16
M1
M4
M7
2X150µF
16V
2X150µF
16V
2X150µF
16V
L1
L2
L3
L4
L5
L6
GND
GND
GND
M11
M14
M17
M2
M5
M8
M12
M15
M18
M3
M6
M9
0.003
0.003
0.003
0.003
0.003
0.003
3X330µF, 6.3V
3X330µF, 6.3V
POSCAP
D1
MBRS
340T3
D2
MBRS
340T3
D3
MBRS
340T3
D4
MBRS
340T3
D5
MBRS
340T3
D6
MBRS
340T3
POSCAP
3729 TA03
3X330µF, 6.3V
POSCAP
V
3.3V/90A
OUT
V
12V
IN
3729fb