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AT9917TS-G PDF预览

AT9917TS-G

更新时间： 2024-09-09 19:54:15
品牌 Logo 应用领域
美国微芯 - MICROCHIP 驱动光电二极管接口集成电路
页数 文件大小 规格书
12页 687K
描述
LED DISPLAY DRIVER, PDSO24

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中文翻译

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AT9917TS-G 技术参数

是否Rohs认证： 符合生命周期：Active
包装说明：TSSOP,Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
Factory Lead Time：7 weeks风险等级：5.33
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：R-PDSO-G24
JESD-609代码：e3长度：7.8 mm
复用显示功能：NO功能数量：1
区段数：1端子数量：24
最高工作温度：125 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：1.2 mm最大供电电压：40 V
最小供电电压：5.3 V标称供电电压：12 V
表面贴装：YES温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn) - annealed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 mm
最小 fmax：0.58 MHzBase Number Matches：1

AT9917TS-G 数据手册

 浏览型号AT9917TS-G的Datasheet PDF文件第2页浏览型号AT9917TS-G的Datasheet PDF文件第3页浏览型号AT9917TS-G的Datasheet PDF文件第4页浏览型号AT9917TS-G的Datasheet PDF文件第5页浏览型号AT9917TS-G的Datasheet PDF文件第6页浏览型号AT9917TS-G的Datasheet PDF文件第7页 
Supertex inc.  
AT9917  
Automotive LED Driver IC  
with High Current Accuracy  
Features  
General Description  
The AT9917 is an advanced fixed frequency PWM IC  
► Switch mode controller for boost, SEPIC & buck  
converters  
designed to control single-switch, boost, SEPIC, and buck  
LED drivers in a constant current mode. The controller uses a  
peak current-mode control scheme (with programmable slope  
compensation) and includes an internal transconductance  
amplifier to control the output current with high accuracy.  
The IC includes a +/-1A gate driver that makes the AT9917  
suitable for high power applications. An internal 40V linear  
regulator powers the IC eliminating the need for a separate  
power supply for the IC. The IC provides a FAULT output,  
which can be used to disconnect the LEDs in case of a fault  
condition (such as an alternator load dump in automobiles)  
using an external disconnect FET. AT9917 also provides a  
TTL compatible, low-frequency PWM dimming input that  
can accept an external control signal with a duty ratio of 0-  
100% and a frequency of up to several kilohertz. Temperature  
foldback of the output current is possible, using an external  
NTC resistor.  
► Closed loop control of output current  
► High PWM dimming ratio  
► Internal 40V linear regulator  
► Internal 3% voltage reference  
► Constant frequency operation with programmable  
slope compensation  
► Linear and PWM dimming  
► Programmable jitter to reduce EMI  
► +/-1.0A MOSFET gate driver  
► Output short circuit protection  
► Output over voltage protection  
► Programmable hiccup timer  
► Temperature fold-back with external NTC resistor  
► Soft start  
► Meets AEC-Q100 requirements  
Applications  
The AT9917-based LED driver is suited for automotive LED  
driver applications. The AT9917 based LED lamp drivers can  
achieve efficiencies in excess of 90% when buck or boost  
topologies are used.  
► Automotive LED driver applications  
Typical Boost Application Circuit  
D1  
D2 (Optional)  
L1  
CIN  
CIN1  
Co  
Q1  
RCS  
CSC  
RSC  
CPVDD  
PVDD AVDD GT  
CS  
PGND OVP  
FLT  
VIN  
Q2  
R4  
GND  
EN  
FDBK  
COMP  
IREF  
AT9917  
PWMD  
CC  
RS  
RT  
SS  
JT  
NTC  
DIV T1  
T2  
REF  
RT  
RR1  
CREF  
R1  
R2  
CSS  
CJTR  
RR2  
R3  
Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com  
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