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LTC3548AEDD#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
LTC3548A
16
3548afa
TYPICAL APPLICATIONS
Figure 4. Low Ripple Buck Regulators with Soft-Start
Efficiency vs Load Current
RUN/SS2
V
IN
V
IN
= 2.5V TO 5.5V
V
OUT2
2.5V
400mA
V
OUT1
1.2V
800mA
RUN/SS1
POR
SW1
V
FB1
GND
V
FB2
SW2
MODE/SYNC
LTC3548A
C
IN
10μF
R7
100k
R6
4.7M
R5
4.7M
POWER-ON
RESET
C1 22pFC2 22pF
L1
4.7μH
L2
10μH
R4
887k
R2
604k
R1
604k
R3
280k
C
OUT2
10μF
C4
680pF
C3
680pF
C
OUT1
10μF
3548A F04a
C
IN
, C
OUT1
, C
OUT2:
TAIYO YUDEN JMK316BJ106ML
L1: TDK VLF3012ST-4R7MR91
L2: TDK VLF3012ST-100MR59
LOAD CURRENT (mA)
1
0
EFFICIENCY (%)
30
20
10
70
60
50
40
100
90
80
10 100 1000
3548A F04b
2.5V
V
IN
= 3.3V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
1.2V
LTC3548A
17
3548afa
PACKAGE DESCRIPTION
DD Package
10-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1699 Rev B)
3.00 p0.10
(4 SIDES)
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-2).
CHECK THE LTC WEBSITE DATA SHEET FOR CURRENT STATUS OF VARIATION ASSIGNMENT
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE
TOP AND BOTTOM OF PACKAGE
0.40 p 0.10
BOTTOM VIEW—EXPOSED PAD
1.65 p 0.10
(2 SIDES)
0.75 p0.05
R = 0.125
TYP
2.38 p0.10
(2 SIDES)
15
106
PIN 1
TOP MARK
(SEE NOTE 6)
0.200 REF
0.00 – 0.05
(DD) DFN REV B 0309
0.25 p 0.05
2.38 p0.05
(2 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
1.65 p0.05
(2 SIDES)
2.15 p0.05
0.50
BSC
0.70 p0.05
3.55 p0.05
PACKAGE
OUTLINE
0.25 p 0.05
0.50 BSC
LTC3548A
18
3548afa
PACKAGE DESCRIPTION
MSE Package
10-Lead Plastic MSOP, Exposed Die Pad
(Reference LTC DWG # 05-08-1664 Rev C)
MSOP (MSE) 0908 REV C
0.53 p 0.152
(.021 p .006)
SEATING
PLANE
0.18
(.007)
1.10
(.043)
MAX
0.17 – 0.27
(.007 – .011)
TYP
0.86
(.034)
REF
0.50
(.0197)
BSC
12
3
45
4.90 p 0.152
(.193 p .006)
0.497 p 0.076
(.0196 p .003)
REF
8910
10
1
7
6
3.00 p 0.102
(.118 p .004)
(NOTE 3)
3.00 p 0.102
(.118 p .004)
(NOTE 4)
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
0.254
(.010)
0o – 6o TYP
DETAIL “A”
DETAIL “A”
GAUGE PLANE
5.23
(.206)
MIN
3.20 – 3.45
(.126 – .136)
0.889 p 0.127
(.035 p .005)
RECOMMENDED SOLDER PAD LAYOUT
0.305 p 0.038
(.0120 p .0015)
TYP
2.083 p 0.102
(.082 p .004)
2.794 p 0.102
(.110 p .004)
0.50
(.0197)
BSC
BOTTOM VIEW OF
EXPOSED PAD OPTION
1.83 p 0.102
(.072 p .004)
2.06 p 0.102
(.081 p .004)
0.1016 p 0.0508
(.004 p .002)
DETAIL “B”
DETAIL “B”
CORNER TAIL IS PART OF
THE LEADFRAME FEATURE.
FOR REFERENCE ONLY
NO MEASUREMENT PURPOSE
0.05 REF
0.29
REF
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LTC3548AEDD#PBF

Mfr. #:
Buy LTC3548AEDD#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators Dual Synchronous 400mA/800mA, 2.25MHz Step-Down DC/DC Regulator
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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