LTC3803-5
13
38035fd
TYPICAL APPLICATIONS
4:1 Input Range 3.3V Output Isolated Flyback DC/DC Converter
Effi ciency vs Load Current
38035 TA05
FDC2512
T1
PA1277NL
0.1μF
0.1μF
100μF
6.3V
× 3
0.33μF
2.2nF
47pF
100k
56k
22.1k
V
IN
+
V
IN
V
CC
V
CC
V
OUT
+
V
OUT
+
3.3V
3A
GND
V
OUT
+
MMBTA42
PDZ6.8B
0.1μF
2.2μF
4.7k
680Ω
22Ω
6.8k
270Ω
1
1
2
3
6
5
4
2
BAS516
BAS516
PDS1040
10Ω
BAS516
PS2801-1
130Ω
68Ω
150pF
220k
0.040Ω
1
2
3
6
5
4
18 V TO 72V
I
TH
/RUN
LTC3803-5
GND
GATE
SENSE
V
CC
V
FB
GND
BAS516
BAT760
LT4430
OC
V
IN
COMP
FB
OPTO
I
OUT
(A)
0
70
EFFICIENCY (%)
72
74
76
78
80
82
84
1234
38035 TA05a
V
IN
= 48V
V
IN
= 24V
LTC3803-5
14
38035fd
PACKAGE DESCRIPTION
1.50 – 1.75
(NOTE 4)
2.80 BSC
0.30 – 0.45
6 PLCS (NOTE 3)
DATUM ‘A’
0.09 – 0.20
(NOTE 3)
S6 TSOT-23 0302 REV B
2.90 BSC
(NOTE 4)
0.95 BSC
1.90 BSC
0.80 – 0.90
1.00 MAX
0.01 – 0.10
0.20 BSC
0.30 – 0.50 REF
PIN ONE ID
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
3.85 MAX
0.62
MAX
0.95
REF
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
1.4 MIN
2.62 REF
1.22 REF
S6 Package
6-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1636)
LTC3803-5
15
38035fd
REVISION HISTORY
REV DATE DESCRIPTION PAGE NUMBER
D 6/10 MP-grade part added. Refl ected throughout the data sheet. 1 to 16
(Revision history begins at Rev D)
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.

LTC3803IS6-5#TRPBF

Mfr. #:
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators High Power Synchronous Switching Regulator Controller for DDR Memory Termination
Lifecycle:
New from this manufacturer.
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