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参数资料
| 型号： | MSL3167GU |
| 厂商： | Atmel |
| 文件页数： | 10/16页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER 16 STRING |
| 产品培训模块： | Industrial Panel Backlighting Driver ICs LED Lighting Drivers LED Driver Basics |
| 标准包装： | 1,000 |
| 系列： | Adaptive SourcePower™ |
| 拓扑： | 交直流离线开关，PWM |
| 输出数： | 16 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 16MHz ~ 23MHz |
| 电源电压： | 4.75 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 32-SOP |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 85°C |
Detailed Description
The MSL3167/8 are multi-string LED drivers with
power supply control that continually optimize system
efficiency. A pulse width modulated signal applied to the
PWM input sets the PWM frequency and duty cycle
of all LED string drivers. The MSL3168 automatically
calculates a phase delay of 1/16th of the PWM period
and implements the delay successively to each string
driver to reduce the transient load on the LED power
supply. The MSL3167 applies the PWM input signal to
all LED string outputs without phase delays.
The MSL3167/8 controls a wide range of external
DC-DC and AC-DC converter architectures, and allows
design of the string power supply for the worst case
LED forward voltage drop (V f ) without concern about
excessive power dissipation issues. At start-up, the
MSL3167/8 automatically reduces the power supply
voltage to the minimum voltage required to keep
the LEDs in current regulation. The MSL3167/8 then
continually re-optimize the string power supply voltage
to compensate for the changes in the LED strings’
forward voltage drop due to temperature and aging.
The MSL3167/8 handles string and over-temperature
faults automatically, and optionally interface to a host
system with an I 2 C/SMBus-compatible interface for
detailed fault monitoring and string control.
Internal Regulators
The MSL3167/8 includes an internal 2.5V linear
regulator (VDD), powered by VIN, which powers the
low-voltage internal circuitry. Bypass VDD to GND with
a ceramic capacitor of at least 4.7μF. Bypass VIN to GND
with a ceramic capacitor of at least 10μF.
The Enable Input
The MSL3167/8 enables input, EN, enables the device.
Drive EN low to turn off all strings, to clear the fault
output, FLTB, and to enter low power operation, which
lowers quiescent current draw to 1.5mA (typical). With
EN low, the serial interface is ignored and the FBO output
current is zero. Drive EN high with a 5V logic signal to
turn on the MSL3167/8. When EN changes from low to
high, all bits in the control registers revert to their power-
up default values, the fault registers are cleared, and the
Efficiency Optimizer performs an initial calibration cycle. If
unused, connect EN to VIN.
String Phase Delay
The MSL3168 automatically calculates a phase delay of
1/16th of the PWM period and implements the delay
successively to the string drive signals (Figure 4) to
reduce the transient load on the LED power supply. The
MSL3167 applies the PWM input signal to all LED string
outputs without phase delays.
Figure 4. Atmel LED Drivers-MSL3167/8 Examples of Non-shifted and Phase Shifted
String Drive Signals.
10
Atmel LED Drivers-MSL3167/MSL3168
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| MSL3167GU-R | 功能描述:LED照明驱动器 16Str Wht Simple PWM Dimming Intrfce, F 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 |
| MSL3168GU | 功能描述:LED照明驱动器 16Str Wht Simple PWM Dimming Intrfce, F 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 |
| MSL3168GU-R | 功能描述:LED照明驱动器 16Str Wht Simple PWM Dimming Intrfce, F 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-3-2/10 | 制造商:Cooper Bussmann 功能描述: |
| MSL33 | 功能描述:滑动开关 SP3T 0.2A 30V On-On-On RoHS:否 制造商:C&K Components 触点形式:SPDT 开关功能:Momentary 触点额定值: 端接类型: 执行器:Extended, Side 安装风格:SMD/SMT 触点电镀:Silver 封装: |
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