Linear Technology No Rsense LTC3736, Datasheet

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LTC3736
3736fa
PART NUMBER DESCRIPTION COMMENTS
LTC1622 Synchronizable Low Input Voltage Current Mode V
IN
2V to 10V, Burst Mode Operation, 8-Lead MSOP
Step-Down DC/DC Controller
LTC1735 High Efficiency Synchronous Step-Down Controller Burst Mode Operation, 16-Pin Narrow SSOP, Fault Protection,
3.5V
≤
V
IN
≤
36V
LTC1772 Constant Frequency Current Mode Step-Down 2.5V
≤
V
IN
≤
9.8V, I
OUT
Up to 4A, SOT-23 Package, 550kHz
DC/DC Controller
LTC1773 Synchronous Step-Down Controller 2.65V ≤ V
IN
≤ 8.5V, I
OUT
Up to 4A, 10-Lead MSOP
LTC1778 No R
SENSE
TM
Synchronous Step-Down Controller Current Mode Operation Without Sense Resistor,
Fast Transient Response, 4V
≤ V
IN
≤ 36V
LTC1872 Constant Frequency Current Mode Step-Up Controller 2.5V ≤ V
IN
≤ 9.8V, SOT-23 Package, 550kHz
LTC2923 Power Supply Tracking Controller Controls Up to Three Supplies, 10-Lead MSOP
LTC3411 1.25A (I
OUT
), 4MHz, Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.5V to 5.5V, I
Q
= 60 µ A, I
SD
= <1 µ A,
MS Package
LTC3416 4A (I
OUT
), 4MHz, Synchronous Step-Down DC/DC Converter 95% Efficiency, V
IN
: 2.25V to 5.5V, I
SD
= <1 µ A,
with Output Tracking TSSOP-20E Package
LTC3701 2-Phase, Low Input Voltage Dual Step-Down DC/DC Controller 2.5V ≤ V
IN
≤ 9.8V, 550kHz, PGOOD, PLL, 16-Lead SSOP
LTC3708 Fast 2-Phase, No R
SENSE
Buck Controller with Constant On-Time Dual Controller, V
IN
Up to 36V, Very Low
Output Tracking Duty Cycle Operation, 5mm × 5mm QFN Package
LTC3728/LTC3728L Dual, 550kHz, 2-Phase Synchronous Step-Down Constant Frequency, V
IN
to 36V, 5V and 3.3V LDOs,
Switching Regulator 5mm × 5mm QFN or 28-Lead SSOP
LTC3736-1 Dual, 2-Phase, No R
SENSE
Synchronous Controller with V
IN
: 2.75V to 9.8V, I
OUT
Up to 5A, 4mm × 4mm QFN Package
Spread Spectrum Spread Spectrum Operation; Output Tracking
LTC3737 Dual, 2-Phase, No R
SENSE
Controller with Non-Synchronous Constant Frequency With PLL, 4mm × 4mm
Output Tracking QFN and 24-Lead SSOP Packages
LTC3776 Dual, 2-Phase, No R
SENSE
Synchronous Controller for DDR/QDR Provides V
DDQ
and V
TT
With One IC; 2.75V ≤ V
IN
≤ 9.8V;
Memory Termination Adjustable Constant Frequency With PLL Up to 850kHz; Spread
Spectrum Operation; 4mm
×
4mm QFN and 24-Lead SSOP
Packages
LTC3808 No R
SENSE
, Low EMI, Synchronous Step-Down Controller with 2.75V ≤ V
IN
≤ 9.8V; Spread Spectrum Operation; 3mm × 4mm
Output Tracking DFN and 16-Lead SSOP Packages
No R
SENSE
is a trademark of Linear Technology Corporation.
LT/TP 0305 500 REV A • PRINTED IN USA
©
LINEAR TECHNOLOGY CORPORATION 2004
RELATED PARTS
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
TYPICAL APPLICATIO
U
SGND
PLLLPF
IPRG2
IPRG1
V
FB1
I
TH1
SW1
R
VIN
10 Ω
C
SS
4.7nF
C
IN
10 µ F
× 2
C
VIN
1 µ F
V
IN
3.3V
V
IN
C
ITH2B
22pF
R
ITH1
15k
C
ITH1
220pF
C
ITH1A
100pF
R
FB1B
118k
R
FB1A
59k
PGOOD
V
FB2
TRACK
25
I
TH2
TG2
LTC3736EUF
PGND
TG1
SYNC/FCB
BG1
PGND
22
21
20
19
18
17
16
15
14
13
12
11
10
23
24
1
2
3
4
1M
5
9
8
7
6
SENSE1
+
MP1
MP2
L1
1.5
µ
H
L2
1.5
µ
H
MN1
Si7540DP
MN2
Si7540DP
RUN/SS
BG2
PGND
PGND
SW2
SENSE2
+
C
OUT2
150 µ F
C
OUT1
150 µ F
V
OUT
1.8V
8A
3736 TA02
+
+
C
OUT1
, C
OUT2
: SANYO 4TPB150MC
L1, L2: VISHAY IHLP-2525CZ-01
2-Phase, Single Output Synchronous DC/DC Converter (3.3V
IN
to 1.8V
OUT
at 8A)