LTC1629/LTC1629-PG
U
TYPICAL APPLICATIO
L1
0.003Ω
INTV
CC
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1000pF
RUN/SS
SENSE1
SENSE1
EAIN
CLKOUT
TG1
+
–
0.1µF
17.8k
0.47µF
D3
M1
M2
3
D1
UPS840
SW1
10k
4
BOOST1
10Ω
5
13.2k
PLLFLTR
PLLIN
V
IN
BG1
1000pF
1000pF
6
0.1µF
33pF
7
C
IN
5V
PHASMD
EXTV
CC
CC
3.3k
1µF,25V
4.7µF
6.3V
8
I
INTV
TH
SGND
C
OUT
9
V
LTC1629-PG
IN
PGND
BG2
5V TO
16V
16.5k
10
11
12
13
14
V
V
V
DIFFOUT
–
BOOST2
SW2
OS
D2
UPS840
D4
100pF
+
100k
OS
POWER
GOOD
–
+
SENSE2
SENSE2
TG2
0.47µF
M3
M4
PGOOD
V
OUT
1000pF
3.3V/30A
L2
0.003Ω
V
V
: 5V TO 16V
MI, M3: IRF7811
M2, M4: IRF7809
L1, L2: 1µH SUMIDA CEPH149-1R0MC
C
C
: OS CON 2-16SP270M
IN
IN
: 3.3V/30A
: KEMET 3-T510 470µF
OUT
OUT
1629 TA02
SWITCHING FREQUENCY = 250kHz
D3, D4: CENTRAL CMDSH-3TR
Figure 12. 3.3V/30A Power Supply with Active Voltage Positioning
RELATED PARTS
PART NUMBER
LTC1435/LTC1435A
LTC1436A-PLL
LTC1438/LTC1439
LTC1438-ADJ
LTC1538-AUX
LTC1539
DESCRIPTION
COMMENTS
High Efficiency Synchronous Step-Down Switching Regulator
Burst ModeTM Operation, 16-Pin Narrow SO
Adaptive PowerTM Mode, 24-Pin SSOP
High Efficiency Low Noise Synchronous Step-Down Switching Regulator
Dual High Efficiency Low Noise Synchronous Step-Down Switching Regulators POR, Auxiliary Regulator
Dual Synchronous Controller with Auxiliary Regulator
POR, External Feedback Divider
Auxiliary Regulator, 5V Standby
Dual High Efficiency Low Noise Synchronous Step-Down Switching Regulator
Dual High Efficiency Low Noise Synchronous Step-Down Switching Regulator
5V Standby, POR, Low-Battery,
Aux Regulator
LTC1530
High Power Step-Down Switching Regulator Controller
High Efficiency 5V to 3.3V Conversion
at Up to 15A
LTC1628/LTC1628-PG Dual High Efficiency, PolyPhase Synchronous Step-Down Switching Regulator Constant Frequency, Standby,
5V and 3.3V LDOs, PGOOD
LTC1702/LTC1703
LTC1708-PG
Dual High Efficiency, PolyPhase Synchronous Step-Down Switching Regulator 500kHz, 25MHz GBW, Voltage Mode
Dual High Efficiency, PolyPhase Synchronous Step-Down Switching Regulator Constant Frequency, 5-Bit VID,
Standby 5V, 3.3V, PGOOD
LTC1709
LTC1735
LTC1736
LTC1929
High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator
with 5-Bit VID
1.3V ≤ V
≤ 3.5V, Current Mode Ensures
OUT
Accurate Current Sharing, 3.5V ≤ V ≤ 36V
IN
High Efficiency Synchronous Step-Down Controller
Burst Mode Operation, 16-Pin Narrow SSOP,
Fault Protection, 3.5V ≤ V ≤ 36V
IN
High Efficiency Synchronous Step-Down Controller with 5-Bit VID
High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator
Output Fault Protection, Power Good,
24-Pin SSOP, 3.5V ≤ V ≤ 36V
IN
Low Cost, 2-Phase Current Mode
Adaptive Power and Burst Mode are trademarks of Linear Technology Corporation.
1629f LT/TP 0100 4K • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
28
LINEAR TECHNOLOGY CORPORATION 1999
●
●
(408)432-1900 FAX:(408)434-0507 www.linear-tech.com
Linear [ Linear ]
