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参数资料
| 型号： | LTC3873ITS8-5#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 16/16页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST FLYBK TSOT23-8 |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 240kHz |
| 占空比： | 84% |
| 电源电压： | 4 V ~ 75 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 是 |
| 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： | SOT-23-8 薄型，TSOT-23-8 |
| 包装： | 带卷 (TR) |
LTC3873-5
TYPICAL APPLICATION
5V Output Nonisolated Telecom Housekeeping Power Supply
V IN
36V TO 72V
UPS840
V OUT
5V
4.7μF
100V
X5R
221k
D1
?
T1
300μF
6.3V
X5R
2A MAX
5.1V
10μF
V CC
?
3
I TH
NGATE
FDC2512
56k
LTC3873-5
RUN/SS
2.2nF
0.1μF
GND
IPRG
SW
68mΩ
V FB
12k
36k
38735 TA03
D1: MBR0540T1
T1: COOPER CTX02-15242
RELATED PARTS
LT 1619
PART NUMBER
?
LTC1624
LTC1700
LTC1871-7
LTC1872/LTC1872B
LT1930
LT1931
LTC3401/LTC3402
LTC3704
LTC1871/LTC1871-7
LTC3703/LTC3703-5
LTC3803/LTC3803-5
LTC3805
LT3825
LT3837
LTC3873
DESCRIPTION
Current Mode PWM Controller
Current Mode DC/DC Controller
No R SENSE Synchronous Step-Up Controller
Wide Input Range Controller
SOT-23 Boost Controller
1.2MHz, SOT-23 Boost Converter
Inverting 1.2MHz, SOT-23 Converter
1A/2A 3MHz Synchronous Boost Converters
Positive-to Negative DC/DC Controller
No R SENSE , Wide Input Range DC/DC Boost Controller
100V Synchronous Controller
200kHz Flyback DC/DC Controller
Adjustable Frequency Flyback Controller
Isolated No-Opto Synchronous Flyback Controller
Isolated No-Opto Synchronous Flyback Controller
No R SENSE Constant Frequency Boost/Flyback/SEPIC
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% Ef?ciency, Operating as Low as 0.9V Input
No R SENSE , 7V Gate Drive, Current Mode Control
Delievers Up to 5A, 550kHz Fixed Frequency, Current Mode
Up to 34V Output, 2.6V V IN 16V, Miniature Design
Positive-to Negative DC/DC Conversion, Miniature Design
Up to 97% Ef?ciency, Very Small Solution, 0.5V ≤ V IN ≤ 5V
No R SENSE , Current Mode Control, 50kHz to 1MHz
No R SENSE , Current Mode Control, 2.5V ≤ V IN ≤ 36V
Step-Up or Step Down, 600kHz, SSOP-16, SSOP-28
V IN and V OUT Limited Only by External Components
V IN and V OUT Limited Only by External Components
V IN : 24V to 75V, Up to 80W, Current Mode Control
V IN : 4.5V to 20V, Up to 60W, Current Mode Control
V IN and V OUT Limited Only by External Components, 200kHz Frequency,
ThinSOT or DFN Package
38735fb
16 Linear Technology Corporation
(408) 432-1900 ● FAX: (408) 434-0507 www.linear.com
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
LT 0908 REV B ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2007
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