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参数资料
| 型号： | MAX6946ATE+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 8/24页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER LINEAR 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 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： | 400kHz |
| 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-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN（3x3） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
10-Port, Constant-Current LED Driver and
I/O Expander with PWM Intensity Control
Configuration Register (0x10)
Use the configuration register to select PWM phasing
between outputs, test fade status, enable hardware
startup from shutdown, and select shutdown or run
mode (Table 2).
Table 2. Configuration Register (0x10)
Initial Power-Up
All control registers reset upon power-up (Table 3).
Power-up status sets I/O ports P0 to P9 to high imped-
ance, and puts the device into shutdown. The
MAX6946/MAX6947 powers up in shutdown.
REGISTER BIT
D7
D6
D5
D4
D3
D2
D1
D0
DESCRIPTION
OSC enable*
RSTPOR options
PWM stagger
Hold-off status**
Fade-off status**
Ramp-up status**
RST RUN enable
RUN enable
VALUE
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
FUNCTION
Internal oscillator enabled as PWM clock source
External oscillator input enabled as PWM clock source
RST does not change register data
RST resets registers to POR (power-on reset) state
PWM outputs are in phase
PWM outputs stagger phase
Device not in hold-off
Device in hold-off
Device not in fade-off
Device in fade-off
Device not in ramp-up
Device in ramp-up
Reset Run disabled
Reset Run enabled
Shutdown mode
Run mode
* The OSCEN bit applies only to the MAX6946. OSCEN is always 0 for the MAX6947, and the MAX6947 ignores writes to the OSCEN bit.
** Read-only bits.
Table 3. Initial Power-Up Register Status
DESCRIPTION
POWER-UP CONDITION
ADDRESS
CODE (HEX)
D7
D6
D5
REGISTER BIT
D4 D3
D2
D1
D0
Port P0–P9 output level
or PWM
Configuration
Ramp-down/hold-off
Ramp-up
Output current ISET70
Output current ISET98
Global current
Port 0–9 high impedance
Shutdown mode, Reset Run disabled
Fade/hold-off disabled
Disabled
I PEAK = 10mA for ports P7–P0
I PEAK = 10mA for ports P9, P8
Full current
0x00–0x09
0x10
0x11
0x12
0x13
0x14
0x15
1
0/1*
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
1
1
0
0
0
0
0
1
1
0
0
0
0
0
1
* Value is 0 for MAX6947 and 1 for MAX6946 bit.
8
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