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参数资料
| 型号： | FAN5646S701X |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 6/13页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER BLINKER SC70-5 |
| 标准包装： | 1 |
| 系列： | TinyWire™ |
| 恒定电流： | 是 |
| 拓扑： | 线性，高端 |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | LED 闪烁器 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-TSSOP（5 引线），SC-88A，SOT-353 |
| 供应商设备封装： | SC-70-5 |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 产品目录页面： | 1215 (CN2011-ZH PDF) |
| 其它名称： | FAN5646S701XDKR |
Circuit Description
Operating Modes
At pow er up, the device is in IDLE (“sleep”) Mode until a rising
edge of a CTRL signal is detected. When both the PLAY and
Play and Follow Bits
Table 3. PLAY and FOLLOW Bit Definition
FOLLOW bits are 0, the FAN5646 executes the LED pattern
shown in Figure 10. If the length of the CTRL pulse is less
than 1.7 s, only the initial pulse is seen. A CTRL pulse that is
kept HIGH after the initial 1.7 s pulse causes the FAN5646 to
go into PLAY mode where PULSE1 and PULSE2 are played
as programmed in the registers (see Table 9) .
PLAY
0
0
1
1
FOLLOW
0
1
0
1
Behavior
Default Behavior per Table 1 *
LED Follows CTRL **
LED Enters PLAY Mode
LED Enters One-Shot Mode
INITIAL 1.7s
LED
CTRL
Figure 10. Initial Pulse Mode Timing
Table 1. CTRL Pin Operation, CONTROL[1:0] = 00
One-Shot Mode
This mode is enabled when the PLAY and FOLLOW bits are
both 1. One-Shot Mode is similar to PLAY mode except that
PULSE1 is enabled while PULSE2 is always ignored. In One-
Shot Mode, PULSE1 is played after CTRL is held HIGH for at
least 200 ? s. Once PULSE1 is initiated, CTRL is ignored until
PULSE1 is completed. If CTRL remains HIGH through the t OFF
time of PULSE1, PULSE1 continues to replay until CTRL is
Mode
IDLE
LED
OFF
Entry
CTRL LOW for > 200 ? s
lowered. Therefore, One-Shot Mode enables the LED to blink
in the programmed pattern as long as CTRL is HIGH.
PLAY
Play Pattern
CTRL HIGH > 2 s
t RISE
t ON
t FALL
t OFF
FOLLOW
Program
Follows CTRL
OFF
CTRL HIGH < 2 s
CTRL HIGH < 50 ? s
The behavior described in Table 1 can be changed using the
PLAY and FOLLOW bits (see Table 3) .
In PLAY Mode, the default pattern of PULSE1 repeats when
CTRL is held HIGH while PULSE2 is always ignored (see
Table 2) . The FAN5646 plays the programmed sequence for
blinking the LED until CTRL is set LOW. The programmed
LED pattern always starts with PULSE1 and it can have t ON
Figure 11. LED Average Current Profile
Table 4. Brightness Steps during Fade Up/Down (12.5%)
and t OFF times that are multiples of 106ms (see Equation (4) )
while PULSE2 is disabled when its respective t ON and t OFF
times are set to zero.
Step #
I OUT(DC) = 12.5% of Full Scale
t ON ( ? s) t OFF ( ? s) % of Full Power
Table 2. PULSE1 Default Pattern – PLAY Mode
0
1
0
13
3,333
3,320
0.00%
0.05%
t RISE
516ms
t FALL
516ms
t ON
533ms
t OFF
1600ms
2
3
4
65
156
299
3,268
3,177
3,034
0.24%
0.60%
1.10%
The IC creates the rise and fall profiles in Figure 11 by
stepping through PWM dimming values given in Table 4 and
Table 5. The SLEW1 and SLEW2 registers control the
brightness of the LED for PULSE1 and PULSE2, respectively.
5
6
7
482
716
1,016
2,852
2,617
2,318
1.80%
2.70%
3.80%
In the example in Table 2, only the SLEW1 register is
programmed with the brightness level for the LED.
In FOLLOW Mode, the LED+ pin is ON when CTRL is HIGH
and, as such, follows the CTRL signal applied to FAN5646.
? 2009 Fairchild Semiconductor Corporation
*
**
Default setting for FAN5646_00
Default setting for FAN5646_01
www.fairchildsemi.com
FAN5646 ? Rev. 1.0. 3
6
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相关代理商/技术参数 |
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| FAN5646S701X_11 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Programmable Indicator a??Softa?? LED Blinker with TinyWirea?￠ Single-Wire Interface |
| FAN5646UC00X | 功能描述:LED照明驱动器 Prog. Indicator Soft LED Blinker 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 |
| FAN5646UC00X_11 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Programmable Indicator a??Softa?? LED Blinker with TinyWirea?￠ Single-Wire Interface |
| FAN5646UC01X | 功能描述:LED照明驱动器 Prog. Indicator Soft LED Blinker 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 |
| FAN5646UC01X_11 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Programmable Indicator a??Softa?? LED Blinker with TinyWirea?￠ Single-Wire Interface |
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