收藏本站
Integrated 16-Channel LED Driver with
Switch-Mode Boost and SEPIC Controller
LED Driver
4-Wire Interface
The MAX16809 also operates in a stand-alone mode
(see the Typical Operating Circuits). For use with a
microcontroller, the MAX16809 features a 4-wire serial
interface using DIN, CLK, LE, OE inputs and DOUT as
a data output. This interface is used to write the LED
channels’ data to the MAX16809. The serial-interface
data word length is 16 bits, D0–D15. See Figure 3.
The functions of the five interface pins are as follows:
DIN is the serial-data input, and must be stable when it
is sampled on the rising edge of CLK. Data is shifted in
MSB first. This means that data bit D15 is clocked in
first, followed by 15 more data bits, finishing with the
LSB, D0.
CLK is the serial-clock input that shifts data at DIN into
the MAX16809’s 16-bit shift register on its rising edge.
Table 1. 4-Wire Serial-Interface Truth Table
LE is the latch-enable input of the MAX16809 that trans-
fers data from the 16-bit shift register to its 16-bit output
latches (transparent latch). The data latches on the
falling edge of LE (Figure 4). The fourth input ( OE ) pro-
vides output-enable control of the output drivers. When
OE is driven high, the outputs (OUT0–OUT15) are forced
to high impedance without altering the contents of the
output latches. Driving OE low enables the outputs to fol-
low the state of the output latches. OE is independent of
the serial interface operation. Data can be shifted into
the serial-interface shift register and latched, regardless
of the state of OE . DOUT is the serial-data output that
shifts data out from the MAX16809’s 16-bit shift register
on the rising edge of CLK. Data at DIN propagates
through the shift register and appears at DOUT 16 clock
cycles later. Table 1 shows the 4-wire serial-interface
truth table.
DATA
SERIAL CLOCK SHIFT REGISTER CONTENTS LOAD
INPUT INPUT
LATCH CONTENTS
BLANKING
INPUT
OUTPUT CONTENTS
CURRENT AT OUT_ _
INPUT
DIN
H
L
CLK D0 D1 D2 … Dn-1 Dn LE D0 D1 D2 … Dn-1 Dn
H
R0 R1 … Rn-2 Rn-1
L
R0 R1 … Rn-2 Rn-1
OE
D0 D1 D2 … Dn-1 Dn
X
R0
R1 R2 … Rn-1
Rn
X
X
X
…
X
X
L
R0 R1 R2
… Rn-1 Rn
P0
P1
P2 … Pn-1
Pn
H
P0
X
P1
X
P2
X
… Pn-1 Pn
…
X
X
L
H
P0
L
P1 P2
L
L
…
…
Pn-1
L
Pn
L
L = Low Logic Level
H = High Logic Level
X = Don’t Care
P = Present State (Shift Register)
R = Previous State (Latched)
______________________________________________________________________________________
15
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
MAX16814EVKIT+ KIT EAL FOR MAX16814
MAX16816EVKIT+ KIT EVAL FOR MAX16816 LED DRIVER
MAX16818EVKIT+ KIT EVALUATION FOR MAX16818
MAX16820EVKIT+ EVAL KIT FOR MAX16820
MAX16821BEVKIT+ KIT EVAL FOR MAX16821B
MAX16822BEVKIT+ KIT EVAL FOR MAX16822
MAX16823EVKIT+ EVAL KIT FOR MAX16823
MAX16824EVKIT+ KIT EVAL FOR MAX16824
相关代理商/技术参数
MAX1680C/D 功能描述:直流/直流开关转换器 DICE SALES DICE RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX1680ESA 功能描述:直流/直流开关转换器 125mA f-Selct Swtchd Cap Volt Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX1680ESA+ 功能描述:直流/直流开关转换器 125mA f-Selct Swtchd Cap Volt Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX1680ESA+T 功能描述:直流/直流开关转换器 125mA f-Selct Swtchd Cap Volt Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX1680ESA-T 功能描述:直流/直流开关转换器 125mA f-Selct Swtchd Cap Volt Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX16810ATU+ 功能描述:LED照明驱动器 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
MAX16810ATU+T 功能描述:LED照明驱动器 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
MAX16811SEUS+ 制造商:Maxim Integrated Products 功能描述: