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LTC3621HMS8E-23.3#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
LTC3621/LTC3621-2
16
3621fc
For more information www.linear.com/LTC3621
package DescripTion
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
MSOP (MS8E) 0213 REV K
0.53 ±0.152
(.021 ±.006)
SEATING
PLANE
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
6. EXPOSED PAD DIMENSION DOES INCLUDE MOLD FLASH. MOLD FLASH ON E-PAD
SHALL NOT EXCEED 0.254mm (.010") PER SIDE.
0.18
(.007)
0.254
(.010)
1.10
(.043)
MAX
0.22 – 0.38
(.009 – .015)
TYP
0.86
(.034)
REF
0.65
(.0256)
BSC
0° – 6° TYP
DETAIL “A”
DETAIL “A”
GAUGE PLANE
1 2
3
4
4.90 ±0.152
(.193 ±.006)
8
8
1
BOTTOM VIEW OF
EXPOSED PAD OPTION
7
6
5
3.00 ±0.102
(.118 ±.004)
(NOTE 3)
3.00 ±0.102
(.118 ±.004)
(NOTE 4)
0.52
(.0205)
REF
1.68
(.066)
1.88
(.074)
5.10
(.201)
MIN
3.20 – 3.45
(.126 – .136)
1.68 ±0.102
(.066 ±.004)
1.88 ±0.102
(.074 ±.004)
0.889 ±0.127
(.035 ±.005)
RECOMMENDED SOLDER PAD LAYOUT
0.65
(.0256)
BSC
0.42 ±0.038
(.0165
±.0015)
TYP
0.1016 ±0.0508
(.004 ±.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
MS8E Package
8-Lead Plastic MSOP, Exposed Die Pad
(Reference LTC DWG # 05-08-1662 Rev K)
LTC3621/LTC3621-2
17
3621fc
For more information www.linear.com/LTC3621
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
revision hisTory
REV DATE DESCRIPTION PAGE NUMBER
A 08/13 Updated Efficiency curve
Input quiescent current limits changed
Oscillator frequency (f
OSC
) conditions changed
1
2
2
B 03/14 Clarified Features and Description
Clarified options
Clarified ordering info and Absolute Maximum Ratings
Added Note 7
Clarified electrical specifications
Clarified pin descriptions, Block Diagram
Clarified Operation description
Added box to figure
Clarified Applications Information
Clarified Typical Application
Swapped locations of C
FB
and R1
1
1
2
2 - 3
3
6
7
7
9 - 13
16
18
C 04/15 Added H-Grade Options and Specifications
Added H-Grade Options and Specifications
Clarified Graphs to Accommodate 150°C Performance
2, 3
4
5, 6
LTC3621/LTC3621-2
18
3621fc
For more information www.linear.com/LTC3621
LINEAR TECHNOLOGY CORPORATION 2013
LT 0415 REV C • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC3621
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LTC3646/
LTC3646-1
40V, 1A (I
OUT
), 3MHz Synchronous Step-Down
DC/DC Converter
95% Efficiency, V
IN
: 4V to 40V, V
OUT(MIN)
= 0.6V, I
Q
= 140µA, I
SD
< 8µA,
3mm × 4mm DFN-14, MSOP-16E Packages
LTC3600 1.5A, 15V
, 4MHz Synchronous Rail-to-Rail Single
Resistor Step-Down Regulator
95% Efficiency, V
IN
: 4V to 15V, V
OUT(MIN)
= 0V, I
Q
= 700µA, I
SD
< 1µA,
3mm × 3mm DFN-12, MSOP-12E Packages
LTC3601 15V
, 1.5A (I
OUT
) 4MHz Synchronous Step-Down
DC/DC Converter
95% Efficiency, V
IN
: 4.5V to 15V, V
OUT(MIN)
= 0.6V, I
Q
= 300µA, I
SD
< 1µA,
4mm × 4mm QFN-20, MSOP-16E Packages
LTC3603 15V
, 2.5A (I
OUT
) 3MHz Synchronous Step-Down
DC/DC Converter
95% Efficiency, V
IN
: 4.5V to 15V, V
OUT(MIN)
= 0.6V, I
Q
= 75µA, I
SD
< 1µA,
4mm × 4mm QFN-20, MSOP-16E Packages
LTC3633/
L
TC3633A
15V/20V, Dual 3A (I
OUT
) 4MHz Synchronous Step-Down
DC/DC Converter
95% Efficiency, V
IN
: 3.6V to 15V/20V, V
OUT(MIN)
= 0.6V, I
Q
= 500µA, I
SD
< 15µA,
4mm × 5mm QFN-28, TSSOP-28E Packages. A Version Up to 20V
IN
LTC3605/
LTC3605A
15V/20V, 5A (I
OUT
) 4MHz Synchronous Step-Down
DC/DC Converter
95% Efficiency, V
IN
: 4V to 15V/20V, V
OUT(MIN)
= 0.6V, I
Q
= 2mA, I
SD
< 15µA,
4mm × 4mm QFN-24 Package. A Version Up to 20V
IN
LTC3604 15V, 2.5A (I
OUT
) 4MHz Synchronous Step-Down
DC/DC Converter
95% Efficiency, V
IN
: 3.6V to 15V, V
OUT(MIN)
= 0.6V, I
Q
= 300µA, I
SD
< 14µA,
3mm × 3mm QFN-16, MSOP-16E Packages
LTC1877 600mA (I
OUT
) 550kHz Synchronous Step-Down
DC/DC Converter
V
IN
: 2.7V to 10V, V
OUT(MIN)
= 0.8V, I
O
= 10µA, I
SD
< 1µA, MSOP-8 Package
LT8610/LT8611 42V, 2.5A (I
OUT
) Synchronous Step-Down
DC/DC Converter
96% Efficiency, V
IN
: 3.4V to 42V, V
OUT(MIN)
= 0.97V, I
Q
= 2.5µA, I
SD
< 1µA,
MSOP-16E Package
R3
187k
C
FB
22pF
C1
1µF
C
OUT
22µF
3621 TA02
L1
3.3µH
V
OUT
5V
R4
25.5k
V
IN
RUN
SW
V
IN
12V
LTC3621-2
GND
FB
MODE/SYNC
INTV
CC
C
IN
10µF
3621 TA02
5V
OUT
with 400mA Burst Mode Operation, 2.25MHz
1.2V
OUT
, Forced Continuous Mode, 1MHz
1.2V
OUT
, Synchronized to 600kHz, Forced Continuous Mode
C
FB
22pF
C1
1µF
C
OUT
22µF
1.2V2.7V TO 17V
3621 TA03
L1
3.3µH
R5
604k
1V
V
IN
RUN
SW
LTC3621
GND
FB
MODE/SYNC
INTV
CC
C
IN
10µF
R1
604k
V
V
OUT
V
IN
C
FB
22pF
C1
1µF
C
OUT
22µF
1.2V2.7V TO 17V
3621 TA04
L1
4.7µH
R5
604k
600kHz CLK
V
IN
RUN
SW
LTC3621
GND
FB
MODE/SYNC
INTV
CC
C
IN
10µF
R1
604k
V
V
OUT
V
IN
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

LTC3621HMS8E-23.3#TRPBF

Mfr. #:
Buy LTC3621HMS8E-23.3#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 17V, 1A, 1MHz Synchronous Step-Down Regulator with Ultralow Quiescent Current
Lifecycle:
New from this manufacturer.
Delivery:
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