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参数资料
| 型号： | LT3745IUJ#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/28页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR 16CH 50MA 40QFN |
| 标准包装： | 2,000 |
| 恒定电流： | 是 |
| 拓扑： | PWM，降压（降压） |
| 输出数： | 16 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 背光，通用 |
| 类型 - 次要： | 颜色 |
| 频率： | 200kHz ~ 1MHz |
| 电源电压： | 6 V ~ 55 V |
| 输出电压： | 36V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-QFN（6x6） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 125°C |
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LT3745
16-Channel 50mA LED
Driver with Buck Controller
6V to 55V Power Input Voltage Range
16 Independent LED Outputs Up to 75mA/36V
±3% LED Current Matching at 50mA (Typ ±1%)
6-Bit Dot Correction Current Adjustment
12-Bit Grayscale PWM Dimming
0.5μs Minimum LED On-Time
Adaptive LED Bus Voltage for High Efficiency
Cascadable 30MHz Serial Data Interface
Full Diagnostic and Protection: Individual Open/Short
40-Lead 6mm × 6mm QFN Package
Large Screen Display LED Backlighting
Mono-, Multi-, Full-Color LED Displays
LED Billboards and Signboards
FEATURES
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LED and Overtemperature Fault
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APPLICATIONS
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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.
DESCRIPTION
The LT ? 3745 integrates a 16-channel LED driver with a 55V
buck controller. The LED driver lights up to 75mA/36V of
LEDs in series per channel, and the buck controller gener-
ates an adaptive bus voltage supplying the parallel LED
strings. Each channel has individual 6-bit dot correction
current adjustment and 12-bit grayscale PWM dimming.
Both dot correction and grayscale are accessible via a
serial data interface in TTL/CMOS logic. A ±3% LED cur-
rent matching and a 0.5μs minimum LED on-time can be
achieved at 50mA per channel.
The LT3745 performs full diagnostic and protection
against open/short LED and overtemperature fault. The
fault status is sent back through the serial data interface.
The 30MHz fully-buffered, skew-balanced, cascadable
serial data interface makes the chip extremely suitable
for large screen LCD dynamic backlighting and mono-,
multi-, full-color LED displays.
TYPICAL APPLICATION
16-Channel LED Driver, 1MHz Buck, 10 LEDs, 25mA to 75mA per Channel, 500Hz 12-Bit Dimming
V IN
42V TO 55V
V IN
CAP
0.47μF
4.7μF
EN
EN/UVLO
GATE
..
..
..
..
..
..
..
V CC
3V TO 5.5V
10μF
46.4k
60.4k
2.048MHz CLOCK
100k
10nF
32.4k
V CC
SYNC
RT
LT3745
SS
I SET
T SET
PWMCK
GND
ISP
ISN
FB
LED00
LED01
LED02
.
LED13
47μH
25m
267k
10k
C1
2 × 47μF
..
.
..
.
..
.
..
.
..
.
..
.
LED14
LED15
SCKI
SCKO
3745 TA01
TTL/CMOS
SDI
LDI
SDO
LDO
TTL/CMOS
3745f
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3746 | 制造商:LINER 制造商全称:Linear Technology 功能描述:16-Channel 50mA LED |
| LT3746EUHH#PBF | 功能描述:IC LED DRIVER 32CHANNEL 56-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 特色产品:LM3445 TRIAC Dimmable LED Driver 标准包装:55 系列:PowerWise® 恒定电流:是 恒定电压:- 拓扑:PWM，降压（降压） 输出数:1 内部驱动器:无 类型 - 主要:- 类型 - 次要:高亮度 LED（HBLED） 频率:30kHz ~ 1MHz 电源电压:8 V ~ 12 V 输出电压:- 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOICN 包装:管件 工作温度:-40°C ~ 125°C 产品目录页面:1285 (CN2011-ZH PDF) 其它名称:LM3445M |
| LT3746EUHH#TRPBF | 功能描述:IC LED DRIVER 32CHANNEL 56-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 |
| LT3746IUHH#PBF | 功能描述:IC LED DRIVER 32CHANNEL 56-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 |
| LT3746IUHH#TRPBF | 功能描述:IC LED DRIVER 32CHANNEL 56-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 |
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