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LT3599HFE#TRPBF PDF预览

LT3599HFE#TRPBF

更新时间： 2024-02-29 17:52:15
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
26页 353K
描述
LT3599 - 4-String 120mA LED Driver with ±1.5% Current Matching; Package: TSSOP; Pins: 28; Temperature Range: -40°C to 125°C

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LT3599HFE#TRPBF 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：4.40 MM, LEAD FREE, PLASTIC, TSSOP-28
针数：28Reach Compliance Code：compliant
风险等级：5.28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湿度敏感等级：1
复用显示功能：NO功能数量：1
区段数：40端子数量：28
最高工作温度：150 °C最低工作温度：-40 °C
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）：260认证状态：Not Qualified
座面最大高度：1.2 mm最大供电电压：30 V
最小供电电压：3.1 V标称供电电压：5 V
表面贴装：YES温度等级：AUTOMOTIVE
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

LT3599HFE#TRPBF 数据手册

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LT3599  
4-String 120mA LED Driver  
with 1ꢀ.5 ꢁCrrent Matching  
FeaTures  
n
DescripTion  
True Color PWMTM Dimming Ratio Up to 3000:1  
The LT®3599 is a fixed frequency 2A step-up DC/DC  
converter designed to drive four strings of 120mA LEDs  
up to a 44V output voltage. The switching frequency is  
programmable from 200kHz to 2.1MHz through an ex-  
ternal resistor.  
n
Drives Four Strings of LEDs at Up to 120mA  
n
1ꢀ.% Accurate LED Current Matcꢁing  
n
Wide Input Voltage Range: 3.1V to 30V  
n
Output Voltage Up to 44V  
n
Regulates LED Current Even When V > V  
IN  
OUT  
LED dimming can be achieved with analog dimming on  
the CTRL pin, and with pulse width modulation dimming  
on the PWM pin. The LT3599 accurately regulates LED  
current even when the input voltage is higher than the  
LED output voltage.  
n
n
n
n
n
n
n
n
n
Disconnects LEDs in Shutdown  
Programmable Maximum V  
(Regulated)  
OUT  
Open/Short LED Protection and Fault Flags  
Programmable LED Current Derating  
Adjustable Frequency: 200kHz to 2.1MHz  
Synchronizable to an External Clock  
Analog Dimming Up to 20:1  
Programmable Input UVLO with Hysteresis  
Thermally Enhanced 32-Pin (5mm × 5mm) QFN and  
28-Pin TSSOP Packages  
Additional features include programmable LED current  
derating, switching frequency synchronization to an ex-  
ternal clock, LED string disable control, OPENLED alert  
pin, SHORTLED alert pins and programmable maximum  
output voltage when all LED strings are disconnected. The  
LT3599isavailableinthethermallyenhanced32-pin(5mm  
× 5mm) QFN and 28-pin TSSOP packages.  
applicaTions  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. 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.  
n
Automotive Navigation TFT LCD Displays  
Desktop and Notebook TFT LCD Displays  
n
Typical applicaTion  
90% Efficient 12W LED Driver  
10µH  
PV  
IN  
8V TO 24V  
4.7µF  
×2  
V
IN  
3.3µF  
3.1V TO 5.5V  
LED Current Matcꢁing  
V
IN  
V
SW  
V
OUT  
IN  
V
1.5  
IN  
1µF  
V
O_SW  
ALL FOUR LED STRINGS  
100k  
1M  
100k  
SHORTLED  
OPENLED  
1.0  
0.5  
200k  
FB  
SHDN/UVLO  
PWM  
31.6k  
PWM  
31.6k  
33.2k  
SYNC  
LT3599  
CTRL  
RT  
0
V
REF  
53.6k  
–0.5  
–1.0  
53.6k  
T
SET  
LED1  
LED2  
LED3  
LED4  
80.6k  
–1.5  
3599 TA01a  
–50  
0
25 50 75 100 125 150  
TEMPERATURE (°C)  
3599 TA01b  
–25  
DISABLE4  
80mA PER STRING  
I
V
SS  
GND  
47nF  
SET  
C
16.5k  
100pF  
10k  
2.2nF  
3599ff  
1
For more information www.linear.com/LT3599  
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