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LTC7138HMSE#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
LTC7138
22
7138f
For more information www.linear.com/LTC7138
Typical applicaTions
36V to 140V to 36V/400mA with 120mA Input Current Limit
5V to 140V Input to 5V/400mA Output with 20kHz Minimum Switching Frequency
L1: TDK SLF12555T-101M1R1
D1: ROHM RF101L2S
7138 TA06a
V
FB
SS
SW
L1
100µH
V
IN
RUN
C
IN
1µF
250V
X7R
C
OUT
4.7µF
50V
X7R
V
OUT
36V
400mA*
V
IN
36V TO 140V
I
SET
OVLO
LTC7138
GND
FBO
220k
35.7k
R2
4.02k
R1
470k
V
PRG1
V
PRG2
I
NPUT CURRENT LIMIT =
V
OUT
2.5
•
R2
R1+R2
• 1+
5µA •R1
V
IN
≈
V
OUT
2.5
•
R2
R1+R2
*
MAXIMUM LOAD CURRENT =
V
IN
36V
•120mA ≤ 400mA
D1
ANODE
Maximum Load and Input Current
vs Input Voltage
Input Current vs Load Current
Switching Frequency vs Load Current
7138 TA08a
V
FB
SW
ANODE
L1
150µH
V
IN
RUN
C
IN
1µF
250V
C
OUT
22µF
V
OUT
5V
400mA
V
IN
5V TO 140V
V
PRG1
V
PRG2
OVLO
LTC7138
GND
I
SET
FBO
SS
953k 6.8Ω
2N7000
100k
175k
OUT
SET
V
+
IN
DIV
LTC6994-1
GND
L1: COILTRONICS DR74-101-R
D1: DIODES INC MURS120-13-F
D1
V
IN
INPUT VOLTAGE (V)
40
MAXIMUM CURRENT (mA)
400
500
150
140130120110
7138 TA06b
0
50 807060 10090
200
300
100
MAXIMUM LOAD CURRENT
MAXIMUM INPUT CURRENT
0.1 100
1000
101
LOAD CURRENT (mA)
SWITCHING FREQUENCY (kHz)
100
1
10
7138 TA08b
0.01
0.1
WITHOUT FREQUENCY LIMIT
WITH FREQUENCY LIMIT
V
IN
= 48V
0.1 100
1000
101
LOAD CURRENT (mA)
INPUT CURRENT (mA)
100
1
10
7138 TA08c
0.01
0.1
WITHOUT FREQUENCY LIMIT
WITH FREQUENCY LIMIT
V
IN
= 48V
LTC7138
23
7138f
For more information www.linear.com/LTC7138
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.
MSOP (MSE16(12)) 0213 REV D
0.53 ±0.152
(.021 ±.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
1.0
(.039)
BSC
1.0
(.039)
BSC
16
16 14 121110
1 3 5 6 7 8
9
9
1
8
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)
0° – 6° TYP
DETAIL “A”
DETAIL “A”
GAUGE PLANE
5.10
(.201)
MIN
3.20 – 3.45
(.126 – .136)
0.889 ±0.127
(.035 ±.005)
RECOMMENDED SOLDER PAD LAYOUT
0.305 ±0.038
(.0120
±.0015)
TYP
0.50
(.0197)
BSC
BOTTOM VIEW OF
EXPOSED PAD OPTION
2.845 ±0.102
(.112 ±.004)
2.845 ±0.102
(.112 ±.004)
4.039 ±0.102
(.159 ±.004)
(NOTE 3)
1.651 ±0.102
(.065 ±.004)
1.651 ±0.102
(.065 ±.004)
0.1016 ±0.0508
(.004 ±.002)
3.00 ±0.102
(.118 ±.004)
(NOTE 4)
0.280 ±0.076
(.011 ±.003)
REF
4.90 ±0.152
(.193 ±.006)
DETAIL “B”
DETAIL “B”
CORNER TAIL IS PART OF
THE LEADFRAME FEATURE.
FOR REFERENCE ONLY
NO MEASUREMENT PURPOSE
0.12 REF
0.35
REF
MSE Package
Variation: MSE16 (12)
16-Lead Plastic MSOP with 4 Pins Removed
Exposed Die Pad
(Reference LTC DWG # 05-08-1871 Rev D)
package DescripTion
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
LTC7138
24
7138f
For more information www.linear.com/LTC7138
LINEAR TECHNOLOGY CORPORATION 2015
LT 0115 • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC7138
relaTeD parTs
Typical applicaTion
12V/400mA Automotive Supply
*V
OUT
≅ V
IN
FOR V
IN
< 12V
V
OUT
12V*
400mA
7138 TA07
V
FB
I
SET
SW
ANODE
L1
220µH
V
IN
RUN
C
IN
1µF
250V
X7R
C
OUT
22µF
16V
X7R
V
IN
4V TO 140V
SS
OVLOV
PRG1
V
PRG2
LTC7138
GND
FBO
267k
196k
L1: COILCRAFT MSS1246T-224KL
D1: DIODES INC SBR1U200P1-7
D1
PART NUMBER DESCRIPTION COMMENTS
LTC3638 140V, 250mA Micropower Step-Down DC/DC Regulator V
IN
: 4V to 140V, V
OUT(MIN)
= 0.8V, I
Q
= 12µA, I
SD
= 1.4µA,
MS16E Package
LTC3639 150V
, 100mA Synchronous Micropower Step-Down
DC/DC Regulator
V
IN
: 4V to 150V, V
OUT(MIN)
= 0.8V, I
Q
= 12µA, I
SD
= 1.4µA,
MS16E Package
LTC3637 76V
, 1A High Efficiency Step-Down DC/DC Regulator V
IN
: 4V to 76V, V
OUT(MIN)
= 0.8V, I
Q
= 12µA, I
SD
= 3µA,
3mm × 5mm DFN16, MSOP16E Packages
LTC3630A 76V
, 500mA Synchronous Step-Down DC/DC Regulator V
IN
: 4V to 76V, V
OUT(MIN)
= 0.8V, I
Q
= 12µA, I
SD
= 5µA,
3mm × 5mm DFN16, MSOP16E Packages
LTC3810 100V Synchronous Step-Down DC/DC Controller
V
IN
: 6.4V to 100V, V
OUT(MIN)
= 0.8V, I
Q
= 2mA, I
SD
< 240µA,
SSOP28 Package
LTC3631/L
TC3631-3.3
LTC3631-5
45V (Transient to 60V), 100mA Synchronous Step-Down
DC/DC Regulator
V
IN
: 4.5V to 45V, V
OUT(MIN)
= 0.8V, I
Q
= 12µA, I
SD
< 3µA,
3mm × 3mm DFN8, MSOP8 Packages
LTC3642 45V (T
ransient to 60V), 50mA Synchronous Step-Down
DC/DC Regulator
V
IN
: 4.5V to 45V, V
OUT(MIN)
= 0.8V, I
Q
= 12µA, I
SD
< 3µA,
3mm × 3mm DFN8, MSOP8 Packages
LTC3632 50V (T
ransient to 60V), 20mA Synchronous Step-Down
DC/DC Regulator
V
IN
: 4.5V to 45V, V
OUT(MIN)
= 0.8V, I
Q
= 12µA, I
SD
< 3µA,
3mm × 3mm DFN8, MSOP8 Packages
LTC3891 60V Synchronous Step-Down DC/DC Controller with
Burst Mode Operation
V
IN
: 4V to 60V, V
OUT(MIN)
= 0.8V, I
Q
= 50µA, I
SD
< 14µA,
3mm × 4mm QFN20, TSSOP20E Packages
LTC4366-1/L
TC4366-2 High Voltage Surge Stopper V
IN
: 9V to >500V, Adjustable Output Clamp Voltage, I
SD
< 14µA,
2mm × 3mm DFN8, TSOT-8 Packages
Efficiency and Power Loss vs
Load Current
V
IN
= 24V
V
IN
= 48V
V
IN
= 120V
LOAD CURRENT (mA)
30
EFFICIENCY (%)
POWER LOSS (mW)
90
100
20
10
80
50
70
10
1
100
60
40
7138 TA07b
0
EFFICIENCY
POWER LOSS
1000
0.1 100 1000101
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LTC7138HMSE#PBF

Mfr. #:
Buy LTC7138HMSE#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators Hi Eff, 140V 400mA Buck Reg
Lifecycle:
New from this manufacturer.
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