Datasheet 搜索 > LED驱动器 > Linear Technology（凌力尔特） > LT3598EUF#TRPBF 数据手册 > LT3598EUF#TRPBF 数据手册 1/24 页
器件3D模型￥ 25.913
LT3598EUF#TRPBF 数据手册 - Linear Technology（凌力尔特）
制造商:
Linear Technology（凌力尔特）
分类:
LED驱动器
封装:
QFN-24
描述:
LED照明驱动器 6-String 30mA LED Driver with +/-1.5% Current Matching
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P7Hot
典型应用电路图在P1P16P17P18P19P20P24
原理图在P8P9
封装尺寸在P22
焊盘布局在P21
技术参数、封装参数在P4
应用领域在P1P11P12P13P14P15P16P17P18P19P20
电气规格在P3P4P5P6
导航目录
LT3598EUF#TRPBF数据手册
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LT3598
1
3598fb
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
6-String 30mA LED Driver
with ±1.5% Current Matching
The LT
®
3598 is a fi xed frequency step-up DC/DC converter
designed to drive up to six strings of LEDs at an output
voltage up to 44V. LED dimming can be achieved with
analog dimming on the CTRL pin, and with pulse width
modulation dimming on the PWM pin. The LT3598
accurately regulates LED current even when the input
voltage is higher than the LED output voltage. The switching
frequency is programmable from 200kHz to 2.5MHz
through an external resistor.
Additional features include programmable overvoltage
protection, switching frequency synchronization to an
external clock, LED current derating based on junction
temperature and/or LED temperature, LED string disable
control, OPENLED alert pin and output voltage limiting
when all LED strings are disconnected. The LT3598 is
available in a thermally enhanced 24-lead (4mm × 4mm)
QFN and 24-lead TSSOP packages.
90% Effi cient LED Driver for 60 White LEDs
n
True Color PWM™ Dimming Delivers Up to 3000:1
Dimming Ratio
n
Drives Six Strings of LEDs at Up to 30mA
n
±1.5% Accurate LED Current Matching
n
Wide Input Voltage Range: 3.2V to 30V
n
Output Voltage Up to 44V
n
Regulates Current Even When V
IN
> V
OUT
n
Disconnects LEDs in Shutdown
n
Programmable Open LED Protection (Regulated)
n
OPENLED Alert Pin
n
Programmable LED Current Derating
n
Adjustable Frequency: 200kHz to 2.5MHz
n
Synchronizable to an External Clock
n
Parallel Channels for Higher Current per LED String
n
Thermally Enhanced 4mm × 4mm QFN and 24-Lead
TSSOP Packages
n
Notebook Computer Display
n
Medium Size Displays
n
Automotive LCD Display
LED Current Matching
2.61k
2.2μF
10μH
4.7μF
15nF
20mA
3598 TA01a
LT3598
V
O_SW
FB
OPENLED
PWM
SHDN
RT
SYNC
CTRL
V
REF
LED1
LED2
LED3
LED4
LED5
LED6
V
OUT
SW
V
IN
V
C
SS GND
T
SET
I
SET
1.00M
30.9k
PV
IN
8V TO 40V
2.2μF
V
IN
5V
14.7k
10nF
47pF
100k
100k
10k
51.1k
100k
60.4k
PWM
SHDN
SYNC
TEMPERATURE (°C)
–50
MATCHING (%)
0.5
1.0
0
–0.5
050
–25
25 75 100 125
–1.0
–1.5
1.5
3598 TA01b
ALL SIX LED STRINGS
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, 7321203.
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