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LT3796HFE-1#PBF

更新时间： 2024-02-25 22:50:12
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
36页 507K
描述
LT3796/LT3796-1 - 100V Constant-Current and Constant-Voltage Controller with Dual Current Sense; Package: TSSOP; Pins: 28; Temperature Range: -40°C to 125°C

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LT3796HFE-1#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,
针数：28Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：4.39模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：100 V最小输入电压：6 V
标称输入电压：24 VJESD-30 代码：R-PDSO-G28
JESD-609代码：e3长度：9.7 mm
湿度敏感等级：1功能数量：1
端子数量：28标称输出电压：7.7 V
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
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）：NOT SPECIFIED座面最大高度：1.2 mm
表面贴装：YES切换器配置：SINGLE
最大切换频率：1150 kHz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：NOT SPECIFIED
宽度：4.4 mmBase Number Matches：1

LT3796HFE-1#PBF 数据手册

 浏览型号LT3796HFE-1#PBF的Datasheet PDF文件第2页浏览型号LT3796HFE-1#PBF的Datasheet PDF文件第3页浏览型号LT3796HFE-1#PBF的Datasheet PDF文件第4页浏览型号LT3796HFE-1#PBF的Datasheet PDF文件第5页浏览型号LT3796HFE-1#PBF的Datasheet PDF文件第6页浏览型号LT3796HFE-1#PBF的Datasheet PDF文件第7页 
LT3796/LT3796-1  
100V Constant-Current and  
Constant-Voltage Controller  
with Dual Current Sense  
DescripTion  
The LT®3796/LT3796-1 are DC/DC controllers designed to  
regulate a constant-current or constant-voltage and are  
ideal for driving LEDs. The fixed frequency and current  
mode architecture result in stable operation over a wide  
range of supply and output voltages. Two ground referred  
voltage FB pins serve as the input for several LED protec-  
tion features, and also allow the converter to operate as a  
constant-voltage source. The LT3796/LT3796-1 feature a  
programmable threshold output current sense amplifier  
with rail-to-rail common mode range. A separate high  
side amplifier is gain configurable with two resistors and  
can be used to regulate a second current or a voltage  
in combination with one of the FB pins. The PWM input  
provides LED dimming ratios of up to 3000:1.  
FeaTures  
n
3000:1 True Color PWM™ Dimming  
n
Wide Input Voltage Range: 6V to 100V  
n
Current Monitoring Up to 100V  
n
High Side PMOS Disconnect and PWM Switch Driver  
n
Constant-Current and Constant-Voltage Regulation  
n
Dual Current Sense Amplifiers with Reporting  
n
C/10 Detection for Battery and SuperCap Charging  
n
Linear Current Sense Threshold Programming  
n
Short-Circuit Protection  
n
Adjustable Frequency: 100kHz to 1MHz  
n
Frequency Synchronization (LT3796)  
n
Independent Top Gate Enable Pin (LT3796-1)  
n
Programmable Open LED Protection with VMODE Flag  
n
Programmable Undervoltage Lockout with Hysteresis  
n
Soft-Start with Programmable Fault Restart Timer  
The LT3796-1 is optimized for a second output current  
regulation loop that can be enabled/disabled with a PMOS  
switch, either to drive a second LED string or to extend  
analog dimming range.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and True  
Color PWM is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners. Protected by U.S. Patents, including 7199560, 7321203,  
7746300.  
n
Available in 28-Lead TSSOP Package  
applicaTions  
n
High Power LED, High Voltage LED, Dual String  
n
Battery and SuperCap Chargers  
n
Accurate Current Limited Voltage Regulators  
Typical applicaTion  
Boost LED Driver with Input Current Monitor  
Efficiency vs VIN  
22µH  
50mΩ  
V
IN  
100  
9V TO 60V  
100V (TRANSIENT)  
2.2µF  
×4  
2k  
95  
2.2µF  
×3  
1M  
1M  
499k  
V
V
CSP  
CSN  
GATE  
90  
IN  
S
13.7k  
EN/UVLO  
118k  
85  
97.6k  
V
SENSE  
REF  
15mΩ  
CTRL  
80  
75  
70  
LT3796  
GND  
FB1  
ISP  
CSOUT  
CSOUT  
PWM  
10nF  
100k  
40.2k  
100k  
PWM  
ISMON  
SYNC  
0
10  
20  
30  
(V)  
40  
50  
60  
0.1µF  
620mΩ  
INTV  
CC  
V
IN  
ISN  
TG  
37961 TA01b  
FAULT  
FAULT  
INTV  
INTV  
CC  
CC  
VMODE  
VMODE  
V
C
RT  
FB2  
SS  
4.7µF  
85V LED  
400mA  
31.6k  
250kHz  
10k  
0.1µF  
10nF  
37961 TA01a  
3796fb  
1
For more information www.linear.com/3796  
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