OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

LT3971AIMSE-5#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
LT3971A/LT3971A-5
22
3971af
TYPICAL APPLICATIONS
10pF
SW
FB
SS
RT
V
IN
V
IN
4.3V TO 27V
V
OUT
1.8V
1.3A
4.7µF
0.47µF
100µF
1M
118k
f = 400kHz
4.7µH
511k
GND
SYNC
OFF ON
LT3971A
3971A TA05
EN BOOST
PG
BD
10pF
SW
FB
SS
RT
V
IN
V
IN
15V TO 38V
V
OUT
12V
1.3A
10µF
0.47µF
10µF
110k
49.9k
f = 800kHz
10µH
1M
GND
BD
SYNC
OFF ON
LT3971A
3971A TA06
EN BOOST
PG
10pF
SW
FB
SS
RT
V
IN
V
IN
6V TO 38V
V
OUT
3.3V
1.3A
4.7µF
0.47µF
22µF
562k
49.9k
4.7µH
1M
GND
PG PGOOD
SYNC
LT3971A
3971A TA07
EN
BOOST
BD
150k
5M
1M
100k
1nF
f = 800kHz
10pF
SW
FB
SS
RT
V
IN
V
IN
10V TO 25V
V
OUT
5V
1.3A
2.2µF
0.47µF
22µF
309k
11k
f = 2MHz
2.2µH
1M
GND
BD
SYNC
OFF ON
LT3971A
3971A TA08
EN BOOST
PG
1nF
1.8V Step-Down Converter 12V Step-Down Converter
3.3V Step-Down Converter with Undervoltage Lockout, Soft-Start, and Power Good
5V, 2MHz Step-Down Converter with Soft-Start
LT3971A/LT3971A-5
23
3971af
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.
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
MSE Package
10-Lead Plastic MSOP, Exposed Die Pad
(Reference LTC DWG # 05-08-1664 Rev H)
MSOP (MSE) 0911 REV H
0.53 t 0.152
(.021 t .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 t 0.152
(.193 t .006)
0.497 t 0.076
(.0196 t .003)
REF
8910
10
1
7
6
3.00 t 0.102
(.118 t .004)
(NOTE 3)
3.00 t 0.102
(.118 t .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
6. EXPOSED PAD DIMENSION DOES INCLUDE MOLD FLASH. MOLD FLASH ON E-PAD
SHALL NOT EXCEED 0.254mm (.010") PER SIDE.
0.254
(.010)
0s – 6s TYP
DETAIL “A”
DETAIL “A”
GAUGE PLANE
5.23
(.206)
MIN
3.20 – 3.45
(.126 – .136)
0.889 t 0.127
(.035 t .005)
RECOMMENDED SOLDER PAD LAYOUT
1.68 t 0.102
(.066 t .004)
1.88 t 0.102
(.074 t .004)
0.50
(.0197)
BSC
0.305 t 0.038
(.0120 t .0015)
TYP
BOTTOM VIEW OF
EXPOSED PAD OPTION
1.68
(.066)
1.88
(.074)
0.1016 t 0.0508
(.004 t .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
LT3971A/LT3971A-5
24
3971af
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2012
LT 0212 • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LT3970 40V, 350mA, 2.2MHz High Efficiency Micropower Step-Down DC/DC
Converter with I
Q
= 2.5µA
V
IN
: 4.2V to 40V, V
OUT(MIN)
= 1.21V, I
Q
= 2.5µA,
I
SD
<1µA, 3mm × 2mm DFN-10 and MSOP-10 Packages
LT3971 38V, 1.2A, 2.2MHz High Efficiency Micropower Step-Down DC/DC
Converter with I
Q
= 2.8µA
V
IN
: 4.3V to 38V, V
OUT(MIN)
= 1.2V, I
Q
= 2.8µA, I
SD
< 1µA,
3mm × 3mm DFN-10, MSOPE-10
LT3990 62V, 350mA, 2.2MHz High Efficiency Micropower Step-Down DC/DC
Converter with I
Q
= 2.5µA
V
IN
: 4.2V to
62V, V
OUT(MIN)
= 1.21V, I
Q
= 2.5µA,
I
SD
<1µA, 3mm × 2mm DFN-10 and MSOP-10 Packages
LT3991 55V, 1.2A, 2.2MHz High Efficiency Micropower Step-Down DC/DC
Converter with I
Q
= 2.8µA
V
IN
: 4.3V to
38V, V
OUT(MIN)
= 1.2V, I
Q
= 2.8µA,
I
SD
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
LT3682 36V, 60V
MAX
, 1A, 2.2MHz High Efficiency Micropower Step-Down
DC/DC Converter
V
IN
: 3.6V to
36V, V
OUT(MIN)
= 0.8V, I
Q
= 75µA, I
SD
<1µA,
3mm × 3mm DFN-12 Package
LT3689 36V, 60V with Transient Protection 800mA, 2.2MHz, High Efficiency
Micropower Step-Down DC/DC Converter with POR Reset Watchdog
Timer
V
IN
: 3.6V to 36V, Transient to 60V, V
OUT(MIN)
= 0.8V, I
Q
= 75µA,
I
SD
<1µA, 3mm × 3mm QFN-16
LT3480 36V with Transient Protection to 60V, 2A (I
OUT
), 2.4MHz, High Efficiency
Step-Down DC/DC Converter with Burst Mode Operation
V
IN
: 3.6V to
36V, Transient to 60V, V
OUT(MIN)
= 0.78V, I
Q
= 70µA,
I
SD
<1µA, 3mm × 3mm DFN-10 and MSOP-10E Packages
LT3980 58V with Transient Protection to 80V, 2A (I
OUT
), 2.4MHz High Efficiency
Step-Down DC/DC Converter with Burst Mode Operation
V
IN
: 3.6V to
58V, Transient to 80V, V
OUT(MIN)
= 0.78V, I
Q
= 85µA,
I
SD
<1µA, MSOP-16E 3mm × 4mm DFN-16 Package and
MSOP-16E Packages
10pF
SW
FB
SS
RT
V
IN
24V
V
OUT
4V
1.3A*
4.7µF
C
BULK
100µF
0.47µF
100µF
412k
49.9k
f = 800kHz
4.7µH
1M
GND
BD
SYNC
11M
LT3971A
3971A TA09a
EN BOOST
PG
1nF
1M
+
–
+
* AVERAGE OUTPUT POWER CANNOT
EXCEED THAT WHICH CAN BE PROVIDED
BY HIGH IMPEDANCE SOURCE.
NAMELY,
WHERE V IS VOLTAGE OF SOURCE, R IS
INTERNAL SOURCE IMPEDANCE, AND η IS
LT3971 EFFICIENCY. MAXIMUM OUTPUT
CURRENT OF 1.2A CAN BE SUPPLIED FOR A
SHORT TIME BASED ON THE ENERGY
WHICH CAN BE SOURCED BY THE BULK
INPUT CAPACITANCE.
P
1065."9tη
1065."9tη
OUT(MAX)
1065."9tη
1065."9tη
1065."9tη
1065."9tη
1065."9tη
1065."9tη
1065."9tη
1065."9tη
1065."9tη
t
1065."9tη
η
1065."9tη
V
1065."9tη
2
1065."9tη
4R
1065."9tη
1065."9tη
1065."9tη
1065."9tη
500µs/DIV
3971A TA09b
V
IN
5V/DIV
V
OUT
200mV/DIV
I
L
1A/DIV
2ms/DIV
3971A TA09c
V
IN
1V/DIV
V
OUT
2V/DIV
I
L
500mA/DIV
4V Step-Down Converter with a High Impedance Input Source
Sourcing a Maximum Load Pulse Start-Up from High Impedance Input Source
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

LT3971AIMSE-5#PBF

Mfr. #:
Buy LT3971AIMSE-5#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 40V, 1.2A, 2MHz Step-Down Switching Regulator with 2uA Quiescent Current
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet