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LT3952EFE#TRPBF

更新时间： 2024-11-23 20:04:11
品牌 Logo 应用领域
凌特 - Linear 驱动光电二极管接口集成电路
页数 文件大小 规格书
32页 1193K
描述
LT3952 - 60V LED Driver with 4A Switch Current; Package: TSSOP; Pins: 28; Temperature Range: -40°C to 85°C

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中文翻译

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LT3952EFE#TRPBF 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, TSSOP28,.25
针数：28Reach Compliance Code：compliant
风险等级：5.61接口集成电路类型：LED DISPLAY DRIVER
JESD-30 代码：R-PDSO-G28JESD-609代码：e3
长度：9.7 mm功能数量：1
区段数：16端子数量：28
最高工作温度：125 °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：TSSOP28,.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）：NOT SPECIFIED
座面最大高度：1.2 mm最大压摆率：2.2 mA
最大供电电压：42 V最小供电电压：3 V
标称供电电压：12 V表面贴装：YES
技术：BIPOLAR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处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4.4 mmBase Number Matches：1

LT3952EFE#TRPBF 数据手册

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LT3952  
60V LED Driver with  
4A Switch Current  
FEATURES  
DESCRIPTION  
®
The LT 3952 is a current mode step-up DC/DC converter  
n
4000:1 True Color PWM™ Dimming  
n
4A, 60V Internal DMOS Switch  
with an internal, 60V, 80mΩ DMOS power switch. The  
LT3952 is specifically designed to drive high power LEDs  
in multiple configurations. It combines input and output  
current regulation loops with output voltage regulation to  
operate as a flexible current/voltage source.  
n
Wide Input Voltage Range: 3V to 42V  
n
0V to 60V Output Current Regulation with Monitor  
n
PMOS Switch Driver for PWM and Output Disconnect  
n
LED Short-Circuit Protection and SHORTLED Flag  
n
Internal Spread Spectrum Frequency Modulation  
Programmable switching frequency with optional spread-  
spectrum modulation provides EMI reduction, while still  
allowing optimization of the external components for  
efficiencyorcomponentsize.TheLEDcurrentisprogram-  
mable with an external sense resistor, and can be adjusted  
from zero to full scale with a voltage at the CTRL pin. The  
external PWM input provides LED ON/OFF control and  
4000:1 dimming ratio, and an internal PWM generator  
delivers the efficiency of PWM dimming to standalone  
or I/O limited applications. The LT3952 is available in the  
thermally enhanced 28-lead TSSOP package.  
n
Constant-Current and Constant-Voltage Regulation  
n
Input Current Limit and Monitor  
n
Adjustable Frequency: 200kHz to 3MHz,  
Synchronizable to an External Clock  
n
10:1 Analog Dimming  
n
Programmable Open-LED Protection with  
OPENLED Flag  
n
Programmable V Undervoltage and  
IN  
Overvoltage Lockout  
n
Available in a 28-Lead TSSOP Package  
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. Patents pending  
APPLICATIONS  
n
Display Backlighting  
n
Automotive and Avionic Lighting  
n
Accurate Current-Limited Voltage Regulators  
TYPICAL APPLICATION  
Short-Circuit Robust Boost LED Driver with Spread Spectrum Frequency Modulation  
4A INPUT LIMIT  
10µH  
15mΩ  
V
IN  
7V TO 42V  
Efficiency vs Input Voltage  
4.7µF  
2.2µF  
100V  
100  
V
IVINP  
LT3952  
RT  
IVINN  
IN  
×2  
EN/UVLO  
SW  
GND  
1M  
90  
OVLO  
57V OPEN LED  
REGULATION  
FB  
21.5k  
CTRL  
80  
V
REF  
ISP  
PWM  
PWM  
ISMON  
DIM  
ISMON  
750mΩ  
INTV  
CC  
70  
ISN  
TG  
100k 100k  
SSFM OFF  
SSFM ON  
OPENLED  
SHORTLED  
OPENLED  
SHORTLED  
INTV  
INTV  
CC  
CC  
60  
V
C
SYNC/SPRD  
SS  
0
10  
20  
30  
(V)  
40  
50  
IVINCOMP  
3.6k  
8.2nF  
V
16 LED (50V)  
333mA  
IN  
3952 TA01b  
90.9k  
1MHz  
2.2µF  
1µF  
100nF  
3952 TA01a  
3952fb  
1
For more information www.linear.com/LT3952  
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中文翻译

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LT3952EFE#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LT3952EFE#PBF Linear

完全替代

 LT3952 - 60V LED Driver with 4A Switch Current; Package: TSSOP; Pins: 28; Temperature Rang

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