LTC3736-2 Linear Technology, LTC3736-2 Datasheet - Page 28

• Manufacturer Part Number: LTC3736-2
• Description: Synchronous Controller
• Manufacturer: Linear Technology

RELATED PARTS
TYPICAL APPLICATIO
PART NUMBER
LTC1735
LTC1778
LTC2923
LTC3411
LTC3416
LTC3418
LTC3701
LTC3708
LTC3728/LTC3728L
LTC3736
LTC3736-1
LTC3737
LTC3772
LTC3776
LTC3808
LTC3809/LTC3809-1 No R
No R
LTC3736-2
28
SENSE
is a trademark of Linear Technology Corporation.
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
DESCRIPTION
High Efficiency Synchronous Step-Down Controller
No R
Power Supply Tracking Controller
1.25A (I
4A (I
with Output Tracking
8A, 4MHz Synchronous Step-Down Regulator
2-Phase, Low Input Voltage Dual Step-Down DC/DC Controller
Fast 2-Phase, No R
Dual, 550kHz, 2-Phase Synchronous Step-Down
Switching Regulator
Dual, 2-Phase, No R
Dual, 2-Phase, No R
Spread Spectrum
Dual, 2-Phase, No R
Output Tracking
No R
Dual, 2-Phase, No R
DDR/QDR Memory Termination
No R
Output Tracking
●
SENSE
OUT
SENSE
SENSE
SENSE
3.3V
22µF
V
FAX: [phone]
C
IN
IN
OUT
), 4MHz, Synchronous Step-Down DC/DC Converter
TM
, Low EMI, Synchronous Step-Down Controller with
Step-Down DC/DC Controller
Synchronous Step-Down Controllers
), 4MHz, Synchronous Step-Down DC/DC Converter
Synchronous Step-Down Controller
1000pF
C
SENSE
100pF
10nF
C
C
1µF
C
ITH1A
SENSE
R
R
SENSE
SENSE
SENSE
ITH1
VIN
SS
59k
59k
2-Phase, 750kHz, Dual Output Synchronous DC/DC Converter
U
FB1A
FB2A
R
1000pF
C
100pF
C
VIN
ITH2A
R
ITH2
22k
Buck Controller with Output Tracking
ITH1
Synchronous Controller
Synchronous Controller with
Controller with
Synchronous Controller for
10Ω
●
R
www.linear.com
187k
22pF
C
FB1B
R
R
FF1
22k
ITH2
TRACKA
59k
22
23
24
R
118k
1
2
3
4
5
9
7
8
6
FB2B
SW1
IPRG1
V
I
IPRG2
PLLLPF
SGND
V
PGOOD
V
I
TRACK
TH1
TH2
FB1
IN
FB2
LTC3736EUF-2
R
TRACKB
118k
PGND
SYNC/FCB
SENSE1
SENSE2
25
RUN/SS
PGND
PGND
PGND
SW2
BG1
TG1
TG2
BG2
+
+
21
20
19
18
17
16
15
14
13
12
11
10
Si3447BDV
Si3447BDV
L1, L2: VISHAY IHLP-2525CZ-01
D1, D2: OPTIONAL
MP1
MP2
COMMENTS
Burst Mode Operation, 16-Pin Narrow SSOP, 3.5V ≤ V
Current Mode Operation Without Sense Resistor,
Fast Transient Response, 4V ≤ V
Controls Up to Three Supplies, 10-Lead MSOP
95% Efficiency, V
MS Package
95% Efficiency, V
TSSOP-20E Package
V
2.5V ≤ V
Constant On-Time Dual Controller, V
Duty Cycle Operation, 5mm × 5mm QFN Package
Constant Frequency, V
5mm × 5mm QFN or 28-Lead SSOP
2.75V ≤ V
V
Spread Spectrum Operation; Output Tracking
Non-Synchronous Constant Frequency with PLL, 4mm × 4mm
QFN and 24-Lead SSOP Packages
2.75V ≤ V
Provides V
4mm × 4mm QFN and 24-Lead SSOP Packages
2.75V ≤ V
DFN and 16-Lead SSOP Packages
2.75V to 9.8V, 3mm × 3mm DFN and 10-Lead MSOPE Packages
IN
IN
: 2.25V to 5.5V, 5mm × 7mm QFN Package
: 2.75V to 9.8V, 4mm × 4mm QFN Package
MN1
Si3460DV
MN2
Si3460DV
IN
IN
IN
IN
DDQ
≤ 9.8V, 550kHz, PGOOD, PLL, 16-Lead SSOP
≤ 9.8V, Output Tracking
≤ 9.8V, SOT-23 or 3mm × 2mm DFN Packages
≤ 9.8V; Spread Spectrum Operation; 3mm × 4mm
and V
D2
1.5µH
D1
1.5µH
IN
IN
L1
L2
: 2.5V to 5.5V, I
: 2.25V to 5.5V, I
TT
IN
with One IC, 2.75V ≤ V
to 36V, 5V and 3.3V LDOs,
C
47µF
×2
37362 F16
C
47µF
×2
OUT2
© LINEAR TECHNOLOGY CORPORATION 2005
OUT1
V
2.5V
4A
V
1.8V
4A
IN
OUT1
OUT2
www.DataSheet4U.com
≤ 36V
Q
SD
IN
= 60µA, I
LT 0206 REV A • PRINTED IN USA
Up to 36V, Very Low
= <1µA,
SD
IN
≤ 9.8V,
= <1µA,
IN
≤ 36V
37362fa