LTC3879
25
3879f
TYPICAL APPLICATIONS
Positive-to-Negative Converter, –5V at 300kHz
+ +
TRACK/SS
LTC3879
BOOST
16
C
B
0.22μF
M2
RJK0304DPB
M1
RJK0304DPB
C
VCC
4.7μF
C
C1
2200pF
C
C2
100pF
D
B
CMDSH-3
L1
2.2μH
C
OUT1
120μF
6.3V
s3
C
OUT2
10μF
10V
s4
+
C
IN1
10μF
25V
C
IN2
82μF
25V
V
OUT
–5V
5A
3879 TA07
V
IN
4.5V TO 20V
1
PGOOD
R
C
20k
R
FB1
20.0k
TG
152
V
RNG
SW
143
MODE PGND
134
I
TH
BG
125
SGND INV
CC
116
I
ON
V
IN
107
V
FB
RUN
98
R
ON
2.4M
R
FB2
147k
C
F
0.1μF
R
F
2.2Ω
C
IN1
: TDK C3225X5R1E106MT
C
OUT1
: KEMET A700D127M006ATE015 s3
C
OUT2
: MURATA GRM31CR61A106KA01 s4
L1: IHLP5050EZ-01 2.2μH
C
SS
0.1μF
V
IN
5V
12V
20V
I
OUT
4A
7A
8A
LTC3879
26
3879f
PACKAGE DESCRIPTION
MSE Package
16-Lead Plastic MSOP, Exposed Die Pad
(Reference LTC DWG # 05-08-1667 Rev A)
MSOP (MSE16) 0608 REV A
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
16
161514 1312 1110
12345678
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
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
0.50
(.0197)
BSC
BOTTOM VIEW OF
EXPOSED PAD OPTION
2.845 p 0.102
(.112 p .004)
2.845 p 0.102
(.112 p .004)
4.039 p 0.102
(.159 p .004)
(NOTE 3)
1.651 p 0.102
(.065 p .004)
1.651 p 0.102
(.065 p .004)
0.1016 p 0.0508
(.004 p .002)
3.00 p 0.102
(.118 p .004)
(NOTE 4)
0.280 p 0.076
(.011 p .003)
REF
4.90 p 0.152
(.193 p .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
LTC3879
27
3879f
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
3.00 p 0.10
(4 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
1.65 p 0.05
(4 SIDES)
NOTE:
1. DRAWING CONFORMS TO JEDEC PACKAGE OUTLINE MO-220 VARIATION (WEED-4)
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
PIN 1
TOP MARK
(NOTE 6)
0.40 p 0.10
BOTTOM VIEW—EXPOSED PAD
1.65 p 0.10
(4-SIDES)
0.75 p 0.05
R = 0.115
TYP
0.25 p 0.05
1
PIN 1 NOTCH R = 0.20 TYP
OR 0.25 s 45o CHAMFER
15 16
2
0.50 BSC
0.200 REF
2.10 p 0.05
3.50 p 0.05
0.70 p0.05
0.00 – 0.05
(UD16 VAR A) QFN 1207 REV A
0.25 p0.05
0.50 BSC
PACKAGE OUTLINE
UD Package
16-Lead Plastic QFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1700 Rev A)
Exposed Pad Variation AA

LTC3879IMSE#PBF

Mfr. #:
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators Fast, Wide Operating Range No Rsense Step-Down Controller
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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