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参数资料
| 型号： | A6261KLYTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 9/19页 |
| 文件大小： | 0K |
| 描述： | IC LED ARRAY DVR 400MA 10-MSOP |
| 标准包装： | 1 |
| 恒定电流： | 是 |
| 拓扑： | 线性（LDO），PWM |
| 输出数： | 4 |
| 类型 - 主要： | 车载，通用 |
| 类型 - 次要： | 高亮度 LED（HBLED） |
| 电源电压： | 6 V ~ 50 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-MSOP 裸露焊盘 |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 125°C |
| 其它名称： | 620-1359-6 |
A6261
The regulators will remain disabled until either the power is
cycled off and on, the EN input is taken low then high, or the
fault flag, FF, is pulled low. If the power is cycled or EN is pulsed
low, the regulators will start in the enabled state, unless disabled
by tying the output to VIN, and the open load detection timer will
be reset. If the open load is still present the regulators will again
be disabled after the open load detect time.
Pulling the fault flag low will override the open load fault action
and all enabled regulators will be switched on. This state will
be maintained while the fault flag is held low. If the fault flag is
allowed to go high the A6261 will return to the open load fault
condition and will disable all regulators.
100
90
80
Protected LED Array Driver
Each of the four regulators includes a limiter to ensure that
the output voltage will not rise higher than the output disable
threshold voltage below V IN when driven by the regulator. This
means that the voltage across the regulator will not be less than
60
40
T JM
the output disable voltage, unless it is forced by connecting the
LAx pin to VIN. However if a load becomes disconnected, the
regulator will pull the LAx pin up to the limit, which will ensure
25
20
T JL
T JF
that the voltage across the regulator, V IN – V LAx , is less than the
open load detect voltage, V OCD .
0
70
90 110 130
Junction Temperature, T J (°C)
150
170
Note that an open load may also be detected if the sum of the for-
ward voltages of the LEDs in a string is close to or greater than
the supply voltage on VIN.
Temperature Monitor A temperature monitor function,
included in the A6261, reduces the LED current as the silicon
junction temperature of the A6261 increases (see figure 2). By
mounting the A6261 on the same thermal substrate as the LEDs,
this feature can also be used to limit the dissipation of the LEDs.
As the junction temperature of the A6261 increases, the regulated
current level is reduced, reducing the dissipated power in the
A6261 and in the LEDs. The current is reduced from the 100%
level at typically 4% per degree Celsius until the point at which
the current drops to 25% of the full value, defined at T JL . Above
this temperature the current will continue to reduce at a lower
rate until the temperature reaches the overtemperature shutdown
threshold temperature, T JF .
The temperature at which the current reduction begins can be
adjusted by changing the voltage on the THTH pin. When THTH
is left open the temperature at which the current reduction begins
is defined as the thermal monitor activation temperature, T JM , and
is specified, in the characteristics table, at the 90% current level.
Figure 2. Temperature monitor current reduction.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A6262 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A6262 is a linear, programmable current regulator providing up to 100 mA from each of four outputs to drive arrays of high brightness LEDs. |
| A6262KLPTR-T | 功能描述:IC LED ARRAY DRIVER AUTO 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 恒定电流:- 恒定电压:- 拓扑:升压（升压），切换式电容器（充电泵） 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:625kHz ~ 875kHz 电源电压:2.7 V ~ 5.3 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-µMAX 包装:带卷 (TR) 工作温度:-40°C ~ 85°C |
| A6262KLYTR-T | 功能描述:IC LED ARRAY DRIVER AUTO 10-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 特色产品:LM3445 TRIAC Dimmable LED Driver 标准包装:55 系列:PowerWise® 恒定电流:是 恒定电压:- 拓扑:PWM，降压（降压） 输出数:1 内部驱动器:无 类型 - 主要:- 类型 - 次要:高亮度 LED（HBLED） 频率:30kHz ~ 1MHz 电源电压:8 V ~ 12 V 输出电压:- 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOICN 包装:管件 工作温度:-40°C ~ 125°C 产品目录页面:1285 (CN2011-ZH PDF) 其它名称:LM3445M |
| A6263 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Protected LED Array Driver |
| A62635-000 | 制造商:TE Connectivity 功能描述:TP-FIREST-0.750 - Bulk |
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