參數(shù)資料
型號: LTC3806EDE
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: Synchronous Flyback DC/DC Controller
中文描述: 0.05 A SWITCHING CONTROLLER, 290 kHz SWITCHING FREQ-MAX, PDSO12
封裝: 4 X 3 MM, PLASTIC, MO-229WGED, DFN-12
文件頁數(shù): 20/20頁
文件大?。?/td> 241K
代理商: LTC3806EDE
20
LTC3806
3806f
LINEAR TECHNOLOGY CORPORATION 2004
LT/TP 0104 1K PRINTED IN THE USA
PART NUMBER
LT
1619
LTC1624
DESCRIPTION
Current Mode PWM Controller
Current Mode DC/DC Controller
COMMENTS
300kHz Fixed Frequency, Boost, SEPIC Flyback Topology
SO-8; 300kHz Operating Frequency; Buck, Boost, SEPIC Design;
V
IN
Up to 36V
Up to 95% Efficiency, Operation as Low as 0.9V Input
Drives External Power MOSFET, Senses Output Voltage Directly from
Primary Side Switching—No Optoisolator Required, 16-Pin SSOP
50kHz to 1000kHz Frequency; Boost, Flyback and SEPIC Topology
Delivers Up to 5A, 550kHz Fixed Frequency, Current Mode
8V to 48V Power Supply Range; Protected from –15V to 60V Supply
Transients, Short-Circuit Protection, Automatic Restart Timer
Up to 34V Output, 2.6V
V
IN
16V, Miniature Design
Positive-to-Negative DC/DC Conversion, Miniature Design
3V
V
IN
25V, 25W to 500W, Programmable Slope Compensation
Up to 97% Efficiency, Very Small Solution, 0.5V
V
IN
5V
Synchronous Operation; Overvoltage/Undervoltage Protection;
10W to 100W Power Supply; 1/2-, 1/4-Brick Footprint
Adjustable Slope Compensation, Internal Soft-Start, 200kHz
LTC1700
LT1725
No R
SENSE
General Purpose Isolated Flyback Controller
TM
Synchronous Step-Up Controller
LTC1871
LTC1872
LT1910
Wide Input Range Current Mode No R
SENSE
Controller
SOT-23 Boost Controller
Protected High Side MOSFET Driver
LT1930
LT1931
LT1950
LTC3401/LTC3402
LT3781/LTC1698
1.2MHz SOT-23 Boost Converter
Inverting 1.2MHz, SOT-23 Converter
Single Switch Forward Controller
1A/2A, 3MHz Synchronous Boost Converters
36V to 72V Input Isolated DC/DC Converter Chipset
LTC3803
No R
SENSE
is a trademark of Linear Technology Corporation.
SOT-23 Flyback Contoller
RELATED PARTS
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
G
FAX: (408) 434-0507
G
www.linear.com
TYPICAL APPLICATIO
U
Figure 8. Mulitple Output Flyback Converter for Telecom
SENSE
NC
SS
G2
G1
GND
1
2
3
4
5
6
12
11
10
9
8
7
RUN
I
TH
FB
NC
V
IN
INTV
CC
LTC3806
R4
33k
0603
R3
12.4k
0603
C8
1nF
0603
C9
100pF
0603
C12
220nF
0603
R5
0.033
1206
Q1
Si4490
Q2
Si7806DN
GND
13
FB
C15
4.7
μ
F
10V
0805
+
R6
12.4k
0603
R7
20.5k
0603
Q3
Si7806DN
Q4
Si7806DN
C10
470
μ
F
4V POSCAP
7343
C11
100
μ
F
1210
V
2.5V
2A
3
5
4
9
8
10
6
11
1
2
12
7
T1
XFMR EFD20
D2
1A 60V
B260A SMA
+
C6
470
μ
F
4V POSCAP
7343
C7
100
μ
F
1210
C5
47
μ
F
1812
C4
10
μ
F
1812
V
3.3V
3A
GND
3806 F08
V
OUT
5V
400mA
V
OUT
12V
400mA
GND
R2
47k
0805
R1
232k
0805
+
C13
100
μ
F
35V TANT
7343
D3
20V
225mW
C14
220nF
0603
C3
2.2
μ
F
100V
1812
C2
220nF
1206
C1
10
μ
F
63V
ELEC
D1
1N4148W
SOD123
L1
3.3
μ
H
+
V
25V TO 60V
GND
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