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参数资料
| 型号： | LT3746IUHH#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/28页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER 32CHANNEL 56-QFN |
| 标准包装： | 2,500 |
| 恒定电流： | 是 |
| 拓扑： | PWM，降压（降压） |
| 输出数： | 32 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 颜色 |
| 频率： | 208kHz ~ 1.05MHz |
| 电源电压： | 6 V ~ 55 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 56-WFQFN 裸露焊盘 |
| 供应商设备封装： | 56-QFN-EP（5x9） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 125°C |
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LT3746
32-Channel 20mA LED
Driver with Buck Controller
6V to 55V Power Input Voltage Range
32 Independent LED Outputs up to 30mA/13V
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
Large Screen Display LED Backlighting
Mono-, Multi-, Full-Color LED Displays
LED Billboards and Signboards
FEATURES
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LED and Overtemperature Fault
APPLICATIONS
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L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
DESCRIPTION
The LT ? 3746 integrates a 32-channel LED driver with a 55V
buck controller. The LED driver lights up to 30mA/13V 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.
The LT3746 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
32-Channel LED Driver, 1MHz Buck, 3 LEDs 10mA to 30mA per Channel, 500Hz 12-Bit Dimming
V IN
13V TO 42V
V IN
CAP
0.47μF
4.7μF
EN
EN/UVLO
GATE
V CC
3V TO 5.5V
10μF
46.4k
100k
10nF
V CC
SYNC
RT
SS
LT3746
GND
ISP
ISN
FB
22μH
33m
80.6k
10k
C1
2 × 47μF
..
60.4k
2.048MHz CLOCK
32.4k
I SET
T SET
PWMCK
LED00
LED01
LED02
.
LED29
LED30
LED31
SCKI
SCKO
TTL/CMOS
SDI
LDI
SDO
LDO
TTL/CMOS
3746 TA01
For more information www.linear.com/3746
3746fa
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3748 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic High Voltage Isolated Flyback Converter No External Start-Up Resistor |
| LT3748_1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:100V Isolated Flyback Controller |
| LT3748EMS#PBF | 功能描述:IC REG CTRLR FLYBK ISO CM 16MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LT3748EMS#TRPBF | 功能描述:IC REG CTRLR FLYBK ISO CM 16MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LT3748EMSPBF | 制造商:Linear Technology 功能描述:100V Isolated Flyback Controller MSOP16 |
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