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参数资料
| 型号： | LT3598EFE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 24TSSOP |
| 标准包装： | 2,500 |
| 恒定电流： | 是 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 6 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 车载，背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 200kHz ~ 2.5MHz |
| 电源电压： | 3 V ~ 30 V |
| 输出电压： | 44V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 24-TSSOP 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 125°C |
LT3598
6-String 30mA LED Driver
with ±1.5% Current Matching
FEATURES
DESCRIPTION
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True Color PWM ? Dimming Delivers Up to 3000:1
Dimming Ratio
Drives Six Strings of LEDs at Up to 30mA
±1.5% Accurate LED Current Matching
Wide Input Voltage Range: 3.2V to 30V
Output Voltage Up to 44V
Regulates Current Even When V IN > V OUT
Disconnects LEDs in Shutdown
Programmable Open LED Protection (Regulated)
OPENLED Alert Pin
Programmable LED Current Derating
Adjustable Frequency: 200kHz to 2.5MHz
Synchronizable to an External Clock
Parallel Channels for Higher Current per LED String
Thermally Enhanced 4mm × 4mm QFN and 24-Lead
TSSOP Packages
The LT ? 3598 is a ?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)
APPLICATIONS
QFN and 24-lead TSSOP packages.
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Notebook Computer Display
Medium Size Displays
Automotive LCD Display
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.
TYPICAL APPLICATION
90% Ef?cient LED Driver for 60 White LEDs
LED Current Matching
PV IN
8V TO 40V
10μH
1.5
ALL SIX LED STRINGS
2.2μF
V IN
5V
2.2μF
100k
V IN
SW
V OUT
V O_SW
1.00M
4.7μF
1.0
0.5
OPENLED
FB
51.1k
SHDN
PWM
SYNC
SHDN
PWM
SYNC
RT
V REF
LT3598
30.9k
0
–0.5
–1.0
10k
LED1
–1.5
–50
–25
0
25
50
75
100
125
100k
CTRL
LED2
LED3
LED4
LED5
20mA
TEMPERATURE (°C)
3598 TA01b
60.4k
T SET I SET SS
LED6
GND V C
47pF
10nF
2.61k
100k
14.7k
15nF
3598 TA01a
3598fb
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3598EUF#PBF | 功能描述:IC LED DRIVR WHITE BCKLGT 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:60 系列:- 恒定电流:- 恒定电压:- 拓扑:线性（LDO），PWM，升压（升压） 输出数:8 内部驱动器:是 类型 - 主要:背光 类型 - 次要:RGB，白色 LED 频率:500kHz ~ 1.5MHz 电源电压:4.75 V ~ 26 V 输出电压:45V 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* 工作温度:-40°C ~ 85°C |
| LT3598EUF#TRPBF | 功能描述:IC LED DRIVR WHITE BCKLGT 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND |
| LT3598EUFPBF | 制造商:Linear Technology 功能描述:LED Driver 60-Seg 3.3/5/9/../24V QFN24 |
| LT3598EUF-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:6-String 30mA LED Driver with 1.5% Current Matching |
| LT3598EUFTRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:6-String 30mA LED Driver with 1.5% Current Matching |
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