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参数资料
| 型号： | MAX7306AUB+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 14/23页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER LINEAR 10-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 拓扑： | PWM |
| 输出数： | 4 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，LED 闪烁器 |
| 类型 - 次要： | 白色 LED |
| 频率： | 1MHz |
| 电源电压： | 1.62 V ~ 3.6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 供应商设备封装： | 10-µMAX-EP |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
SMBus/I 2 C Interfaced 4-Port, Level-Translating
GPIOs and LED Drivers
the host processor of data changes at the selected
inputs. Reset INT by reading any port’s I/O registers
(0x01 to 0x04).
Standby Mode
Upon power-up, the MAX7306/MAX7307 enter standby
mode when the serial interface is idle. If any of the PWM
intensity control, blink, or debounce features are used,
the operating current rises because the internal PWM
oscillator is running and toggling counters. When using
OSCIN to override the internal oscillator, the operating
current varies according to the frequency at OSCIN.
When the serial interface is active, the operating current
also increases because the MAX7306/MAX7307, like all
I 2 C slaves, have to monitor every transmission. The bus
timeout circuit and debounce circuit use the internal oscil-
lator even if OSCIN is selected.
Internal Oscillator and OSCIN/OSCOUT
External Clock Options
The MAX7306/MAX7307 contain an internal oscillator
nominally at 32kHz. The MAX7306/MAX7307 always use
the internal oscillator for bus timeout and for debounce
timing (when enabled). The internal oscillator is also
used by default to generate PWM and blink timing. The
internal oscillator only runs when the clock output
OSCOUT is needed to keep the operating current as
low as possible.
The MAX7306/MAX7307 can use an external clock
source instead of the internal oscillator for the PWM
and blink timing. The external clock can range from DC
to 1MHz and it connects to the P2/OSCIN port. The
P3/OSCOUT port provides a buffered and level-shifted
output of the internal oscillator or external clock to drive
other devices. Select the P2/OSCIN and P3/OSCOUT
port options using the device configuration register
0x27 bits D2 and D3 (see Table 2).
The P2/OSCIN port is overvoltage protected to supply
voltage V LA for the MAX7307, so the external clock can
exceed V DD if V LA is greater than V DD . The external
clock cannot exceed V DD for the MAX7306. The port P2
register (see Tables 2 and 6) sets the P2/OSCIN logic
threshold (30%/70%) to either the V DD supply or the V LA .
Use OSCOUT or an external clock source to cascade
up to four MAX7306s per master for applications requir-
ing additional ports. To synchronize the blink action
across multiple MAX7306s (see Figures 4 and 5), use
OSCOUT from one MAX7306 to drive OSCIN of the
other MAX7306s. This process ensures the same blink
frequency of all the devices, but also make sure to syn-
chronize the blink phase. The blink timing of multiple
MAX7306s is synchronous at the instant of power-up
because the blink and PWM counters clear by each
device ’s internal reset circuit, and by default the
device’s internal oscillators are off upon power-up.
Ensure that the blink phase of all the devices remains
synchronized by programming the OSCIN and
OSCOUT functionality before programming any feature
that causes a MAX7306’s internal oscillator to operate
(blink, PWM, bus timeout, or key debounce). Configure
the RST input to reset the internal timing counters used
for PWM and blink by setting bit D1 of device configu-
ration register 0x26 (see Table 3).
MAX7306/MAX7307
P3/OSCOUT
MAX7306/MAX7307
MAX7306/MAX7307
P2/OSCIN
MAX7306/MAX7307
MAX7306/MAX7307
P2/OSCIN
MAX7306/MAX7307
P3/OSCOUT
P2/OSCIN
P3/OSCOUT
P2/OSCIN
Figure 4. Synchronizing Multiple MAX7306/MAX7307s (Internal Oscillator)
14
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7306AUB+ | 功能描述:外围驱动器与原件 - PCI 4-Port Level-Trans GPIO & LED Driver RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX7306AUB+T | 功能描述:外围驱动器与原件 - PCI 4-Port Level-Trans GPIO & LED Driver RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX7306EVKIT+ | 制造商:Maxim Integrated Products 功能描述:MAX7306 EVAL KIT/EVAL SYS - Rail/Tube |
| MAX7307 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:SMBus/I2C Interfaced 4-Port, Level-Translating GPIOs and LED Drivers |
| MAX7307ALB+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
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