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Atmel LED Drivers-MSL2041/MSL2042
Low-cost, Simple 4-string LED Drivers with External Current Sink
MOSFETs, 5000:1 Dimming Range and Per String PWM Input
Direct PWM Control of the LED Strings
An external PWM signal applied to the inputs PWM0 - PWM3 (MSL2041) or PWM0 (MSL2042) allows direct control
over the strings frequency and duty cycle. The PWM inputs recognize signals of DC to 50kHz, and 0% to 100% duty
cycle. The MSL2042, which allows only a single PWM input, calculates and applies a progressive delay of 1/4 th the PWM
frame successively to strings one - three, while string zero follows the PWM input directly.
Register Map Summary
Control the MSL2041/2 using the registers in the range 0x00 - 0x18. Register bit values always revert to their default
values (Table 4) when EN is taken high. Do not write to registers not listed in Table 3.
Table 3. Register Map
ADDRESS AND
REGISTER NAME
FUNCTION
D7
D6
D5
REGISTER DATA
D4 D3
D2
D1
D0
0x00
STRINGEN
LED String
Enable
-
-
-
-
STR3EN
STR2EN
STR1EN
STR0EN
0x01
UNUSED
0x02
CONFIG
Configuration FLDBKEN I 2 CTOEN
-
-
STRSCFEN STROCFEN
FBOEN
SLEEP
0x03
FLTSTATUS*
Fault Status
-
-
-
-
STRSCDET STROCDET
-
FLTBDRV
0x04 - 0x07
UNUSED
0x08
FLTMASK
String Fault
Enable
-
-
-
-
FLTMASK3
FLTMASK2 FLTMASK1 FLTMASK0
0x09
0x0A
SCSTAT*
OCSTAT*
LED Short
Circuit Fault
String Open
Circuit Fault
-
-
-
-
-
-
-
-
SC3
OC3
SC2
OC2
SC1
OC1
SC0
OC0
0x0B - 0x0D
UNUSED
0x0E
0x0F
ISTR
8-Bit Global
String Current
ISTR[7:0]
UNUSED
0x10
RESERVED Must Be 0x04
0
0
0
0
0
1
0
0
0x11
FBOCTRL
Efficiency
Optimizer
Control
FBOSTEP[1:0]
HDRMSTEP[1:0]
-
-
ACALEN
ICHKDIS
0x12 - 0x13
UNUSED
0x14
0x15
FBODAC1*
FBODAC2*
Efficiency
Optimizer DAC
Readback
FBODAC1[7:0]
FBODAC2[7:0]
0x16 - 0x17
UNUSED
0x18
FBOSTAT*
FBO Status
-
-
FBIGNDSTAT[1:0]
-
-
-
-
* Read Only Registers
Atmel LED Drivers-MSL2041/2042
19
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相关代理商/技术参数
MSL2041GU-R 功能描述:LED照明驱动器 Low-Cost, Simple 4-String LED Drivers RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL2042 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Low-cost, Simple 4-string LED Drivers with External Current Sink MOSFETs, 5000:1 Dimming Range and Per String PWM Input
MSL2042GU 功能描述:LED照明驱动器 4Str RGB or White LED Driver lighting RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL2042GU-R 功能描述:LED照明驱动器 4Str RGB or White LED Driver lighting RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N
MSL-204AUYL-4 制造商:Unity Microelectronics Inc 功能描述:LED Uni-Color Amber 592nm 4-Pin SMD T/R
MSL-204B 制造商:UOT 制造商全称:Unity Opto Technology 功能描述:ALLEDs
MSL-204DR 制造商:UOT 制造商全称:Unity Opto Technology 功能描述:ALLEDs
MSL-204HW 制造商:UOT 制造商全称:Unity Opto Technology 功能描述:ALLEDs