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LT3837EFE#PBF PDF预览

LT3837EFE#PBF

更新时间： 2024-02-22 01:33:25
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
28页 312K
描述
LT3837 - Isolated No-Opto Synchronous Flyback Controller; Package: TSSOP; Pins: 16; Temperature Range: -40°C to 85°C

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中文翻译

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LT3837EFE#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：TSSOP包装说明：HTSSOP, TSSOP16,.25
针数：16Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.71Samacsys Description：Switching Voltage Regulators Synchronous Flyback Controller
模拟集成电路 - 其他类型：SWITCHING CONTROLLER控制模式：CURRENT-MODE
最大输入电压：20 V最小输入电压：4.5 V
标称输入电压：14 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e3长度：5 mm
湿度敏感等级：1功能数量：1
端子数量：16最高工作温度：85 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：HTSSOP封装等效代码：TSSOP16,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.1 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：SINGLE
最大切换频率：110 kHz温度等级：OTHER
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：4.4 mm
Base Number Matches：1

LT3837EFE#PBF 数据手册

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LT3837  
Isolated No-Opto  
Synchronous Flyback Controller  
FEATURES  
DESCRIPTION  
The LT®3837 is an isolated switching regulator controller  
designed for medium power flyback topologies. A typical  
application is 10W to 60W with the part powered from a  
DC supply.  
n
Senses Output Voltage Directly from Primary Side  
Winding—No Optoisolator Required  
Synchronous Driver for High Efficiency  
Supply Voltage Range 4.5V to 20V  
Accurate Regulation Without User Trims  
Programmable Switching Frequency from  
50kHz to 250kHz  
n
n
n
n
The LT3837 is a current mode controller that regulates an  
output voltage based on sensing the secondary voltage  
via a transformer winding during flyback. This allows for  
tight output regulation without the use of an optoisolator,  
improving dynamic response and reliability. Synchronous  
rectification increases converter efficiency and improves  
output cross regulation in multiple output converters.  
n
n
n
n
Synchronizable  
Load Compensation  
Undervoltage Lockout  
Available in a Thermally Enhanced 16-Lead  
TSSOP Package  
The LT3837 operates in forced continuous conduction  
modewhichimprovescrossregulationinmultiplewinding  
applications. Switching frequency is user programmable  
and can be externally synchronized. The part also has load  
compensation, undervoltage lockout and soft-start circuitry.  
APPLICATIONS  
n
Isolated Medium Power (10W to 60W) Supplies  
n
Instrumentation Power Supplies  
Isolated Medical Supplies  
n
The LT3837 is available in a thermally enhanced 16-pin  
TSSOP package.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
Protected by U.S. Patents including 6498466, 5841643.  
Efficiency vs Load Current  
TYPICAL APPLICATION  
90  
18V  
9V  
IN  
IN  
88  
9V –18V to 3.3V at 10A Isolated Converter  
86  
84  
82  
80  
V
IN  
22.1k  
10µF  
BAS16  
22µF  
100nH  
OUTPUT 3.3V/10A  
220µF  
2N3906  
•
47µF × 3  
2.2nF  
10Ω  
86.6k  
15k  
V
CC  
78  
76  
•
FB  
UVLO  
B0540W  
V
C
2
5
7
8
9
10  
3
4
6
3k  
1nF  
10Ω  
LT3837  
3837 TA01b  
LOAD CURRENT (A)  
47pF  
20k  
OSC  
SFST  
FMMT618  
1µF  
Regulation vs Load Current  
Si7336ADP  
3.3nF  
3.60  
3.50  
3.40  
3.30  
3.20  
3.10  
3.00  
Si7852DP  
PG  
+
100k  
12k  
FMMT718  
t
ON  
150k  
SENSE  
ENDLY  
PGDLY  
8mΩ  
0.1µF  
–
1.37k  
SENSE  
R
CMP  
2.2nF  
9V  
IN  
330Ω  
15Ω  
0.1µF  
SG  
C
18V  
CMP  
•
•
IN  
GND  
10k  
BAT54  
3837 TA01a  
2
5
7
8
9
10  
3
4
6
3837 TA01c  
LOAD CURRENT (A)  
3837fd  
1
1234567...28

中文翻译

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LT3837EFE#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LT3837EFE#TRPBF Linear

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 LT3837 - Isolated No-Opto Synchronous Flyback Controller; Package: TSSOP; Pins: 16; Temper

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