參數(shù)資料
型號(hào): LT1871EMS-7#TR
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO10
封裝: PLASTIC, MSOP-10
文件頁數(shù): 26/32頁
文件大?。?/td> 461K
代理商: LT1871EMS-7#TR
LTC1871-7
32
18717fc
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
LINEAR TECHNOLOGY CORPORATION 2002
LT 0108 REV C PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
A Small, Nonisolated 12V Flyback Telecom Housekeeping Supply
PART NUMBER
DESCRIPTION
COMMENTS
LT
1619
Current Mode PWM Controller
300kHz Fixed Frequency, Boost, SEPIC, Flyback Topology
LTC1624
Current Mode DC/DC Controller
SO-8; 300kHz Operating Frequency; Buck, Boost, SEPIC Design;
VIN Up to 36V
LTC1700
No RSENSE Synchronous Step-Up Controller
Up to 95% Efciency, Operation as Low as 0.9V Input
LTC1871
Wide Input Range, No RSENSE Controller
Operation as Low as 2.5V Input, Boost Flyback,SEPIC
LTC1872
SOT-23 Boost Controller
Delivers Up to 5A, 550kHz Fixed Frequency, Current Mode
LT1930
1.2MHz, SOT-23 Boost Converter
Up to 34V Output, 2.6V ≤ VIN ≤ 16V, Miniature Design
LT1931
Inverting 1.2MHz, SOT-23 Converter
Positive-to-Negative DC/DC Conversion, Miniature Design
LTC3401/LTC3402
1A/2A 3MHz Synchronous Boost Converters
Up to 97% Efciency, Very Small Solution, 0.5V ≤ VIN ≤ 5V
LTC3803
SOT-23 Flyback Controller
Adjustable Slope Compensation, Internal Soft-Start, Current Mode
200kHz Operation
LTC3806
Synchronous Flyback Controller
High Efciency, Improves Cross Regulation in Multiple Output Designs,
Current Mode, 3mm × 4mm 12-Pin DFN Package
RUN
ITH
FB
FREQ
MODE/SYNC
SENSE
VIN
INTVCC
GATE
GND
LTC1871-7
RT
120k
f = 200kHz
T1: COILTRONICS VP1-0076
M1: FAIRCHILD FDC2512 (150V, 0.5Ω)
Q1: ZETEX FMMT625 (120V)
C2
4.7μF
X5R
CIN
2.2μF
100V
X7R
M1
RS
0.12Ω
T1
1, 2, 3
(SERIES)
VIN
36V
TO 72V
4, 5, 6
(PARALLEL)
RC
3.4k
CC1
2.2nF
CC2
47pF
C1
1nF
OPTIONAL
R2
26.7k
1%
D3
COUT
47μF
X5R
VOUT
12V
0.4A
R1
604k
1%
R3
12.4k
1%
R5
100k
R6
10Ω
Q1
D2
D1
9.1V
UV+ = 31.8V
UV= 29.5V
D1: ON SEMICONDUCTOR MMBZ5239BLT1 (9.1V)
D2: ON SEMICONDUCTOR MMSD4148T11
D3: INTERNATIONAL RECTIFIER 10BQ060
R4
110k
1%
C3
0.1μF
X5R
18717 TA05
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