- 您现在的位置：买卖IC网 > PDF目录20741 > MAX6967AEE+T (Maxim Integrated)IC LED DRIVER LINEAR 16-QSOP PDF资料下载
参数资料
| 型号： | MAX6967AEE+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 7/29页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER LINEAR 16-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 恒定电流： | 是 |
| 拓扑： | 开路漏极，PWM |
| 输出数： | 10 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | RGB，白色 LED |
| 频率： | 270kHz ~ 450kHz |
| 电源电压： | 2.25 V ~ 3.6 V |
| 输出电压： | 7V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 125°C |
第1页第2页第3页第4页第5页第6页当前第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页
MAX6966/MAX6967
10-Port Constant-Current LED Drivers and I/O
Expanders with PWM Intensity Control
The tradeoff for LED intensity control is between
depth of current-control resolution, noise constraints,
and software complexity:
? For high LED resolution where each LED needs
individual intensity settings, use the 8-bit PWM
control plus the 1-bit analog control to get 9 bits
of individual LED intensity control.
? For absolute maximum LED resolution where the
LED uses the same intensity settings, use the 8-
bit PWM control plus the 1-bit analog control,
plus the global 3-bit analog control to get 12 bits
of LED intensity control.
? For lowest noise applications where PWM cannot
be used, 1 bit of individual analog control is
available. If all LEDs use the same intensity set-
tings, the 1-bit analog control plus the global 3-
bit analog control provide 4 bits of static LED
intensity control.
? If the standard half/full constant-current settings
of 10mA/20mA are not acceptable, then the
global 3-bit analog control can be used to
reduce the currents for all the constant-current
outputs.
6) Take care with PC board layout . The MAX6966/
MAX6967 are switching moderate currents in PWM
applications, so the MAX6966/MAX6967 and the
load supplies need careful decoupling to minimize
conducted noise. Also, the serial interface is fast, so
simple overshoot-damping terminations may be
required if the tracks are long.
Detailed Description
The MAX6966/MAX6967 are general-purpose input/out-
put (GPIO) peripherals that provide 10 I/O ports, P0 to
P9, controlled through a high-speed SPI-compatible
serial interface. The 10 I/O ports can be used as logic
inputs, open-drain logic outputs, or constant-current
sinks in any combination. Ports withstand 7V indepen-
dent of the MAX6966’s or MAX6967’s supply voltage
whether used as logic inputs, logic outputs, or con-
stant-current sinks.
Ports configured as constant-current outputs can be set
to sink either a constant current of either 10mA or 20mA.
The static port current may be PWM with a duty cycle
ranging from 3/256 to 254/256 to reduce the average
current, or remain static.
Ports configured as open-drain logic outputs have a
relatively weak sink capability, which should still be
adequate for normal logic-level outputs. Open-drain
logic outputs typically require external pullup resistors
to the appropriate positive supply to provide the logic-
high reference. The weak drive means that the short-
circuit current is low enough that inadvertently driving
an LED from a port configured as a logic output is
unlikely to damage the LED.
The MAX6966/MAX6967 are rated for all 10 outputs to
carry their maximum 20mA loads at the same time. The
port configuration options are shown in Table 1.
Table 1. Port Configuration Options
OUTPUT
BEHAVIOR OUT OF
BEHAVIOR IN SHUTDOWN
PORT TYPE
REGISTER
CODE
SHUTDOWN (CONFIGURATION
REGISTER BIT D0 = 1)
(CONFIGURATION REGISTER
BIT D0 = 0)
APPLICATION NOTES
Low-logic
output
0x00
Logic-low output, not constant current
High-logic
output
Logic input
Constant-
current static
sink output
0x01
0x02
Logic-high output with external pullup resistor; otherwise, high
impedance
CMOS logic input
Static constant-current sink
output
Lowest supply current
unaffected by shutdown
Full constant-current drive
with no PWM noise
High impedance
Constant-
current PWM
0x03–0xFE
PWM constant-current sink output
Adjustable constant current
output
LED off
Maxim Integrated
0xFF
Logic-high output with external pullup resistor; otherwise, high
impedance
LED off
7
相关PDF资料 |
PDF描述 |
|---|---|
| NCV8518APWG | IC REG LDO 5V .25A 16-SOIC |
| HMM43DRUN | CONN EDGECARD 86POS .156 DIP SLD |
| HMM43DRUH | CONN EDGECARD 86POS .156 DIP SLD |
| ASM25DRKN-S13 | CONN EDGECARD 50POS .156 EXTEND |
| ASM25DRKH-S13 | CONN EDGECARD 50POS .156 EXTEND |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6967ATE | 功能描述:LED显示驱动器 10-Port Constant Current LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| MAX6967ATE+ | 功能描述:LED显示驱动器 10-Port Constant Current LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| MAX6967ATE+T | 功能描述:LED显示驱动器 10-Port Constant Current LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| MAX6967ATE-T | 功能描述:LED显示驱动器 10-Port Constant Current LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| MAX6968AAE | 功能描述:LED显示驱动器 8-Port 5.5V Constant Current LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。