参数资料
型号: LTC3803IS6-3#TRMPBF
厂商: Linear Technology
文件页数: 16/16页
文件大小: 0K
描述: IC REG CTRLR FLYBK PWM TSOT23-6
标准包装: 500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 330kHz
占空比: 90%
电源电压: 5.7 V ~ 8 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: SOT-23-6 细型,TSOT-23-6
包装: 带卷 (TR)
相关产品: 732-2263-6-ND - TRANS FLYBACK LTC3803 16.9UH
732-2263-1-ND - TRANS FLYBACK LTC3803 16.9UH
732-2263-2-ND - TRANS FLYBACK LTC3803 16.9UH

LTC3803-3
TYPICAL APPLICATION
Ef?ciency vs Load
100
95
V OUT = 3.3V
90% Ef?cient Synchronous Flyback Converter
90
V IN
36V TO 72V
220k
C IN
?
T1
?
Q2
C O
V OUT *
3.3V
1.5A
85
80
75
V IN = 36V
V IN = 48V
V IN = 60V
1nF
33k 1
2
I TH /RUN GATE
LTC3803-3
GND V CC
6
5
560Ω
Q1
?
D1
0.1μF
70
500
750
1000 1250 1500
LOAD CURRENT (mA)
V IN = 72V
1750 2000
38033 TA04b
8.06k
3
V FB = 0.8V SENSE
4
4.7k
Ef?ciency vs Load
25.5k*
R FB
10μF
10V
R CS
38033 TA04a
100
V OUT = 5V*
V OUT
95
T1: PULSE ENGINEERING PA1006
Q1: FAIRCHILD FDC2512
Q2: VISHAY Si9803
D1: PHILIPS BAS516
C IN : TDK 1μF, 100V, X5R
C O : TDK 100μF, 6.3V, X5R
R CS : VISHAY OR IRC, 80mΩ
*FOR 5V OUTPUT CHANGE R FB TO 42.2k
90
85
80
75
V IN = 36V
V IN = 48V
V IN = 60V
V IN = 72V
70
500
750
1000 1250 1500
1750
2000
RELATED PARTS
LOAD CURRENT (mA)
38033 TA04c
PART NUMBER
LT3573
LTC3805/
LTC3805-5
LTC3873/
LTC3873-5
LT3757
LT3758
DESCRIPTION
Isolated Flyback Switching Regulator with 60V
Integrated Switch
Adjustable Constant Frequency Flyback, Boost, SEPIC
DC/DC Controller
No R SENSE ? Constant Frequency Flyback, Boost, SEPIC
Controller
Boost, Flyback, SEPIC and Inverting Controller
Boost, Flyback, SEPIC and Inverting Controller
COMMENTS
3V ≤ V IN ≤ 40V, No Opto-Isolator or Third Winding Required, Up to 7W
Output Power, MSOP-16E
V IN and V OUT Limited Only by External Components, 3mm × 3mm DFN-10,
MSOP-10E Packages
V IN and V OUT Limited Only by External Components, 8-pin ThinSOT or
2mm × 3mm DFN-8 Packages
2.9V ≤ V IN ≤ 40V, 100kHz to 1MHz Programmable Operating Frequency,
3mm × 3mm DFN-10 and MSOP-10E Package
5.5V ≤ V IN ≤ 100V, 100kHz to 1MHz Programmable Operating Frequency,
3mm × 3mm DFN-10 and MSOP-10E
LTC1871/LTC1871-1/ Wide Input Range, No R SENSE Low Quiescent Current
Programmable Operating Frequency, 2.5V ≤ V IN ≤ 36V, Burst Mode ?
LTC1871-7
Flyback, Boost and SEPIC Controller
Operation at Light Load, MSOP-10
38033fd
16 Linear Technology Corporation
(408) 432-1900 ● FAX: (408) 434-0507 www.linear.com
1630  McCarthy  Blvd.,  Milpitas,  CA  95035-7417
LT 0610 REV D ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2006
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LTC3803IS6-5#TRPBF 功能描述:IC REG CTRLR FLYBK PWM TSOT23-6 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR)
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