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LT1339CN#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
19
LT1339
sn1339 1339fas
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 represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SW Package
20-Lead Plastic Small Outline (Wide 0.300)
(LTC DWG # 05-08-1620)
S20 (WIDE) 0396
NOTE 1
0.496 – 0.512*
(12.598 – 13.005)
20
19 18
17
16
15
14 13
1
23
4
5
6
78
0.394 – 0.419
(10.007 – 10.643)
910
1112
0.037 – 0.045
(0.940 – 1.143)
0.004 – 0.012
(0.102 – 0.305)
0.093 – 0.104
(2.362 – 2.642)
0.050
(1.270)
TYP
0.014 – 0.019
(0.356 – 0.482)
TYP
0
° – 8° TYP
NOTE 1
0.009 – 0.013
(0.229 – 0.330)
0.016 – 0.050
(0.406 – 1.270)
0.291 – 0.299**
(7.391 – 7.595)
× 45°
0.010 – 0.029
(0.254 – 0.737)
NOTE:
1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
*
**
PACKAGE DESCRIPTION
U
Dimensions in inches (millimeters) unless otherwise noted.
N Package
20-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
N20 1197
0.020
(0.508)
MIN
0.125
(3.175)
MIN
0.130 ± 0.005
(3.302 ± 0.127)
0.065
(1.651)
TYP
0.045 – 0.065
(1.143 – 1.651)
0.018 ± 0.003
(0.457 ± 0.076)
0.005
(0.127)
MIN
0.100 ± 0.010
(2.540 ± 0.254)
0.009 – 0.015
(0.229 – 0.381)
0.300 – 0.325
(7.620 – 8.255)
0.325
+0.035
–0.015
+0.889
–0.381
8.255
()
0.255 ± 0.015*
(6.477 ± 0.381)
1.040*
(26.416)
MAX
12
3
4
5
6
7
8
910
19 1112
131416
1517
18
20
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
TYPICAL APPLICATIONS
U
5V to 28V DC/DC Synchronous Boost Converter Limits Input Current at 60A (DC)
V
BOOST
TG
TS
12V
IN
BG
PGND
PHASE
RUN/SHDN
SENSE
–
SENSE
+
12V
C
12VIN
47µF
IRF3205
× 2
IRF3205
× 4
L1
40µH
V
IN
5V AT 60A
R
FB2
, 1.2k
R
FB1
, 27k
SYNC
5V
REF
CT
SL/ADJ
I
AVG
SS
V
C
SGND
V
FB
V
REF
LT1339
+
CBST
1µF
+
C
IN
2200µF
6.3V
× 4
+
C
12L
1µF
+
R
R1
100k
R
CT
10k
C
CT
2200pF
C
AVG
2200pF
C
SS
, 10µF
C
VC
, 1500pF
R
VC
, 7.5k
C
REF
, 0.1µF
1339 TA04
L1 = 12T 4X12 ON 77439-A7
C
5VREF
1µF
DBST
MBR0530
Q1
FMMT619
Q2
FMMT720
Q3
FMMT619
Q4
FMMT720
D2
MBR0520
D1
IR30BQ060
× 8
R
SS2
, 100Ω
R
SS1
100Ω
R
S
0.002Ω
C
OUT
2200µF
35V
× 6
+
V
OUT
28V
+
+
20
LT1339
sn1339 1339fas
LINEAR TECHNOLOGY CORPORATION 1997
LT/TP 0299 2K REV A • PRINTED IN THE USA
TYPICAL APPLICATION
U
48V to 5V 50A DC/DC Converter with Input Supply Start-Up Protection
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LT1158 Half-Bridge N-Channel MOSFET Driver Current Limit Protection, 100% of Duty Cycle
LT1160 Half-Bridge N-Channel MOSFET Driver Up to 60V Input Supply, No Shoot-Through
LT1162 Dual Half-Bridge N-Channel MOSFET Driver V
IN
to 60V, Good for Full-Bridge Applications
LT1336 Half-Bridge N-Channel MOSFET Driver Smooth Operation at High Duty Cycle (95% to 100%)
LTC
®
1530 High Power Step-Down Switching Regulator Controller Excellent for 5V to 3.xV Up to 50A
LTC1435A High Efficiency, Low Noise Current Mode Step-Down DC/DC Converter Drives Synchronous N-Channel MOSFETs
LTC1438 Dual High Efficiency, Low Noise Synchronous Step-Down Controller Tight 1% Reference
LT1680 High Power DC/DC Current Mode Step-Up Controller High Side Current Sense, Up to 60V Input
SYNC
5V
REF
CT
SL/ADJ
I
AVG
SS
V
C
SGND
V
FB
V
REF
V
BOOST
TG
TS
12V
IN
BG
PGND
PHASE
RUN/SHDN
SENSE
–
SENSE
+
12V
C
12VIN
47µF
IRFZ44
× 2
IRFZ44
× 4
L1
40µH
V
OUT
5V AT 50A
R
FB2
1k
R
FB1
3k
LT1339
+
CBST
1µF
+
C
OUT
2200µF
6.3V, × 4
+
R
R1
22k
R
R3
51k
R
CT
10k
+
C
CT
2200pF
C
AVG
, 2200pF
C
SS
,
10µF
C
VC
, 2200pF
R
VC
, 4.7k
C
REF
0.1µF
1339 TA01
D1 = IR30BQ060 × 8
Q1, Q3 = FMMT619; Q2, Q4 = FMMT720
L1 = Kool Mµ
®
, 12T 4X12 ON 77439-A7
Kool Mµ IS A REGISTERED TRADEMARK OF MAGNETICS, INC.
C
5VREF
1µF
DBST
IN5819
Q1
Q2
Q3
Q4
D2
MBR0520
D4
IN914
D1
R
S
0.002Ω
C
IN
1500µF
63V, × 6
+
V
IN
48V
R
R2
1.2k
C
BG
,
1µF
D3
MMSZ4684
R
BG
10k
50mA
48V to 5V Efficiency
OUTPUT CURRENT (AMPS)
0
EFFICIENCY (%)
100
95
90
85
80
75
70
65
60
55
50
40
LT1339 • TA02
10
20
30
50
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LT1339CN#PBF

Mfr. #:
Buy LT1339CN#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators High Pwr Synch. DC/DC Controller
Lifecycle:
New from this manufacturer.
Delivery:
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