参数资料
型号: LT3511IMS#TRPBF
厂商: Linear Technology
文件页数: 1/26页
文件大小: 0K
描述: IC REG FLYBK ISO ADJ .24A 16MSOP
标准包装: 2,500
类型: 回扫,隔离
输出类型: 可调式
输出数: 1
输出电压: 可调至 150V
输入电压: 4.5 V ~ 100 V
PWM 型: 电流模式,混合
频率 - 开关: 40kHz ~ 650kHz
电流 - 输出: 240mA
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-TFSOP(0.118",3.00mm),12 引线
包装: 带卷 (TR)
供应商设备封装: 16-MSOP
LT3511
Monolithic High Voltage
Isolated Flyback Converter
FEATURES
DESCRIPTION
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4.5V to 100V Input Voltage Range
Internal 240mA, 150V Power Switch
Boundary Mode Operation
No Transformer Third Winding or
Opto-Isolator Required for Regulation
Improved Primary-Side Winding Feedback
Load Regulation
V OUT Set with Two External Resistors
BIAS Pin for Internal Bias Supply and Power
Switch Driver
No External Start-Up Resistor
16-Lead MSOP Package
The LT ? 3511 is a high voltage monolithic switching regula-
tor specifically designed for the isolated ?yback topology.
No third winding or opto-isolator is required for regula-
tion as the part senses output voltage directly from the
primary-side ?yback waveform. The device integrates a
240mA, 150V power switch, high voltage circuitry, and
control into a high voltage 16-lead MSOP package with
four leads removed.
The LT3511 operates from an input voltage range of 4.5V
to 100V and delivers up to 2.5W of isolated output power.
Two external resistors and the transformer turns ratio
easily set the output voltage. Off-the-shelf transformers
are available for several applications. The high level of
Isolated Telecom Power Supplies
Isolated Auxiliary/Housekeeping Power Supplies
Isolated Industrial, Automotive and Medical Power
APPLICATIONS
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Supplies
TYPICAL APPLICATION
48V to 5V Isolated Flyback Converter
integration and the use of boundary mode operation results
in a simple, clean, tightly regulated application solution to
the traditionally tough problem of isolated power delivery.
L , LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
and No R SENSE is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Protected by U.S. Patents, including 5438499, 7471522.
Output Load and Line Regulation
5.25
V IN
36V TO 72V
1μF
1M
V IN
4:1
V OUT+
5V
0.3A
5.20
5.15
43.2k
EN/UVLO
LT3511
R FB
169k
300μH
19μH
22μF
V OUT–
5.10
5.05
V IN = 48V
V IN = 36V
R REF
5.00
10k
4.95
V IN = 72V
T C
69.8k
VC
SW
GND BIAS
16.9k
4.90
4.85
4.80
3.3nF
4.7μF
4.75
0
50
100
150 200
250
300
3511 TA01a
LOAD CURRENT (mA)
3511 TA01b
3511fc
1
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相关代理商/技术参数
参数描述
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