LT3759
28
3759fc
For more information www.linear.com/3759
TYPICAL APPLICATIONS
2.5V to 36V Input, 12V/1A Output SEPIC Converter
(Automotive 12V Regulator)
Efficiency vs Output Current Load Step Response at V
IN
= 12V
Frequency Foldback Waveforms When Output Short-Circuits
SENSE
LT3759
V
IN
DRIVE
V
IN
2.5V TO 36V
C
IN
4.7µF
50V
×4
41.2k
200kHz
C
DC
4.7µF
50V, X5R, ×2
GATE
PGOOD
FBX
GND
INTV
CC
EN/UVLO
SYNC
RT
SS
VC
L1A
L1BI
L1B
I
L1A
105k
118k
0.1µF
7.5k
22nF
15.8k
1%
105k
1%
0.005Ω
0.5W
4.7µF
10V
X5R
V
OUT
12V
0.5A, 2.5V ≤ V
IN
≤ 8V
2A, 8V < V
IN
≤ 36V
C
OUT2
10µF
25V
X5R
3759 TA05a
C
OUT1
47µF
20V
×4
D1
M1
100k
+
V
SW
M1: VISHAY SILICONIX Si7460DP
L1A, L1B: COILTRONICS DRQ127-150
D1: VISHAY 6CWQ06FN
OUTPUT CURRENT (A)
0
EFFICIENCY (%)
90
95
100
1.5 2.5
3759 TA05b
85
0.5 1
2
80
75
V
IN
= 12V
V
OUT
500mV/DIV
(AC)
I
OUT
1A/DIV
3759 TA05c
500µs/DIV
1.6A
0.4A
V
OUT
10V/DIV
V
SW
20V/DIV
I
L1A + L1B
5A/DIV
3759 TA05d
20µs/DIV
LT3759
29
3759fc
For more information www.linear.com/3759
TYPICAL APPLICATIONS
5V to 15V Input, –5V/3A Output Inverting Converter
Efficiency vs Output Current Load Step Response at V
IN
= 10V
Frequency Foldback Waveforms When Output Short-Circuits
OUTPUT CURRENT (A)
0.001
EFFICIENCY (%)
60
80
100
1
3759 TA06b
40
0.01 0.1
10
10
20
30
50
70
90
0
V
IN
= 15V
V
IN
= 5V
V
OUT
500mV/DIV
(AC)
I
OUT
2A/DIV
3759 TA06c
500µs/DIV
4A
0.5A
V
OUT
5V/DIV
V
SW
10V/DIV
I
L1A + L1B
5A/DIV
3759 TA06d
20µs/DIV
SENSE
LT3759
V
IN
DRIVE
V
IN
5V TO 15V
C
IN
47µF
16V
X5R
27.4k
300kHz
GATE
PGOOD
FBX
GND
INTV
CC
EN/UVLO
SYNC
RT
SS
VC
R2
105k
R1
45.3k
0.1µF
9.1k
10nF
15.8k
84.5k
C
DC
4.7µF
25V, X5R, ×2
5mΩ
0.5W
C
VCC
4.7µF
10V
X5R
V
OUT
–5V
3A, 5V ≤ V
IN
≤ 10V
4A, 10V < V
IN
≤ 15V
C
OUT
47µF
6.3V, X5R
×4
3759 TA06a
M1
100k
L1B
3.3µH
L1A
3.3µH
D1
M1: VISHAY SILICONIX Si7848BDP
L1A, L1B: COILTRONICS DRQ127-3R3
D1: VISHAY 6CWQ03FN
LT3759
30
3759fc
For more information www.linear.com/3759
PACKAGE DESCRIPTION
Please refer to http://www.linear.com/designtools/packaging/ for the most recent package drawings.
MSOP (MSE12) 0911 REV F
0.53 ±0.152
(.021 ±.006)
SEATING
PLANE
0.18
(.007)
1.10
(.043)
MAX
0.22 –0.38
(.009 – .015)
TYP
0.86
(.034)
REF
0.650
(.0256)
BSC
12
12 11 10 9 8 7
7
DETAIL “B”
1
6
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
RECOMMENDED SOLDER PAD LAYOUT
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)
1 2 3 4 5 6
3.00 ±0.102
(.118 ±.004)
(NOTE 4)
0.406 ±0.076
(.016 ±.003)
REF
4.90 ±0.152
(.193 ±.006)
DETAIL “B”
CORNER TAIL IS PART OF
THE LEADFRAME FEATURE.
FOR REFERENCE ONLY
NO MEASUREMENT PURPOSE
0.12 REF
0.35
REF
5.23
(.206)
MIN
3.20 – 3.45
(.126 – .136)
0.889 ±0.127
(.035 ±.005)
0.42 ±0.038
(.0165 ±.0015)
TYP
0.65
(.0256)
BSC
MSE Package
12-Lead Plastic MSOP, Exposed Die Pad
(Reference LTC DWG # 05-08-1666 Rev F)

LT3759HMSE#PBF

Mfr. #:
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators Boost, Flyback, SEPIC, and Inverting Controller
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union