ltc3729euh-trpbf Linear Technology Corporation, ltc3729euh-trpbf Datasheet - Page 28

• Manufacturer Part Number: ltc3729euh-trpbf
• Description: 550khz, Polyphase, High Efficiency, Synchronous Step-down Switching Regulator
• Manufacturer: Linear Technology Corporation

LTC3729
TYPICAL APPLICATIO
RELATED PARTS
PART NUMBER
LTC1436A-PLL
LTC1438/LTC1439
LTC1438-ADJ
LTC1530
LTC1538-AUX/
LTC1539
LTC1628/LTC1628-PG 2-Phase, Dual Output Synchronous Step-Down DC/DC Controller
LTC1828-SYNC
LTC1702/LTC1703
LTC1708-PG
LTC1709/LTC1709-7
LTC1709-8/LTC1709-9
LTC1735
LTC1736
LTC1778
LTC1929/LTC1929-PG 2-Phase Synchronous Controllers
LTC3728
Burst Mode is a registered trademark of Linear Technology Corporation. Adaptive Power is a trademark of Linear Technology Corporation.
28
V
V
SWITCHING FREQUENCY = 250kHz
IN
OUT
13.2k
: 5V TO 16V
: 3.3V/30A
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
3.3k
0.1 F
100pF
16.5k
33pF
DESCRIPTION
Low Noise Synchronous Step-Down Switching Regulator
Dual Low Noise Synchronous Step-Down Switching Regulators
Dual Synchronous Controller with Auxiliary Regulator
High Power Step-Down Switching Regulator Controller
Dual Low Noise Synchronous Step-Down Switching Regulators
Dual PolyPhase Synchronous Step-Down Switching Regulator
Dual PolyPhase Synchronous Step-Down Switching Regulator
2-Phase Synchronous Step-Down Switching Regulators with 5-Bit VID
Synchronous Step-Down Controller
Synchronous Step-Down Controller with 5-Bit VID
No R
550kHz, 2-Phase Dual Output Synchronous Step-Down Controller
1000pF
FAX: [phone] www.linear.com
SENSE
1000pF
1000pF
Current Mode Synchronous Step-Down Controller
Figure 12. 3.3V/30A Power Supply with Active Voltage Positioning
MI, M3: IRF7811
M2, M4: IRF7809
L1, L2: 1 H SUMIDA CEP125-1R0MC-H
10
11
12
13
14
1
2
3
4
5
6
7
8
9
U
RUN/SS
SENSE1
SENSE1
EAIN
PLLFLTR
PLLIN
PHASMD
I
SGND
V
V
V
SENSE2
SENSE2
TH
DIFFOUT
OS
OS
–
+
+
–
–
+
LTC3729
CLKOUT
BOOST1
BOOST2
EXTV
PGOOD
INTV
PGND
SW1
SW2
TG1
BG1
BG2
TG2
V
CC
CC
IN
28
27
26
25
24
23
22
21
20
19
18
17
16
15
5V
C
C
D3, D4: CENTRAL CMDSH-3TR
IN
OUT
D4
1 F,6.3V
0.47 F
: OS CON 2-16SP270M
0.47 F
: KEMET 3-T510 470 F
100k
D3
POWER
GOOD
4.7 F
6.3V
0.1 F
10
M1
M3
COMMENTS
Adaptive Power
POR, Auxiliary Regulator
POR, External Feedback Divider
High Efficiency 5V to 3.3V Conversion
at Up to 15A
5V Standby, POR, Low-Battery,
Aux Regulator
Constant Frequency, Standby,
5V and 3.3V LDOs, Power Good
500kHz, 25MHz GBW, Voltage Mode
Constant Frequency, 5-Bit VID,
Standby 5V, 3.3V, Power Good
Current Mode Ensures
Accurate Current Sharing, 3.5V V
Burst Mode
Fault Protection, 3.5V V
Output Fault Protection, Power Good,
24-Pin SSOP, 3.5V V
Up to 97% Efficiency, 4V V
0.8V V
Low Cost, 2-Phase Current Mode
Synchronizable, Current Mode, 3.5V V
SSOP and QFN Packages
L1
L2
C
IN
OUT
®
LINEAR TECHNOLOGY CORPORATION 2001
LT/CPI 0302 1.5K REV A • PRINTED IN USA
M2
M4
Operation, 16-Pin Narrow SSOP,
(0.9)(V
TM
Mode, 24-Pin SSOP
0.003
0.003
IN
D1
UPS840
D2
UPS840
IN
), I
IN
OUT
C
36V
OUT
2V
36V
up to 20A
36V,
IN
sn3729 3729fas
V
5V TO
16V
V
3.3V/30A
IN
OUT
3729TA02
36V
IN
36V