- 您现在的位置：买卖IC网 > Datasheet目录306 > A6262KLPTR-T (Allegro Microsystems Inc)IC LED ARRAY DRIVER AUTO 16TSSOP Datasheet资料下载
参数资料
| 型号： | A6262KLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 7/15页 |
| 文件大小： | 0K |
| 描述： | IC LED ARRAY DRIVER AUTO 16TSSOP |
| 标准包装： | 1 |
| 恒定电流： | 是 |
| 拓扑： | 线性（LDO），PWM |
| 输出数： | 4 |
| 内部驱动器： | 是 |
| 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： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 16-TSSOP-EP |
| 包装： | 剪切带 (CT) |
| 工作温度： | -40°C ~ 125°C |
| 其它名称： | 620-1362-6 |
A6262
As the junction temperature of the A6262 increases, the regulated
current level is reduced, reducing the dissipated power in the
A6262 and in the LEDs. The current is reduced from the 100%
level at typically 4% per degree Celsius until the point at which
100
90
80
Automotive LED Array Driver
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 .
60
40
T JM
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.
T JM will increase as the voltage at the THTH pin, V THTH , is
reduced and is defined as approximately:
25
20
0
70
T JL
90 110 130
Junction Temperature, T J (°C)
150
T JF
170
T JM = 1.46 – V THTH
0.0039
(°C)
(3)
Figure 2. Temperature monitor current reduction.
A resistor connected between THTH and GND will reduce V THTII
and increase T JM . A resistor connected between THTH and a refer-
ence supply greater than 1 V will increase V THTH and reduce T JM .
Figure 3 shows how the nominal value of the thermal monitor
250
1.3
activation temperature varies with the voltage at THTH and with
either a pull-down resistor, R TH , to GND or with a pull-up resis-
tor, R TH , to 3 V and to 5 V.
200
150
R TH pull-up
to 5 V
1.2
1.1
In extreme cases, if the chip temperature exceeds the overtem-
perature limit, T JF , all regulators will be disabled. The tempera-
ture will continue to be monitored and the regulators re-activated
when the temperature drops below the threshold provided by the
specified hysteresis.
100
50
R TH pull-up
to 3 V
V THTH
R TH pull-down
to GND
1.0
0.9
Note that it is possible for the A6262 to transition rapidly
between thermal shutdown and normal operation. This can hap-
pen if the thermal mass attached to the exposed thermal pad is
0
70
80
90 100 110 120 130 140
Thermal Monitor Activation Temperature, T JM (°C)
0.8
150
small and T JM is increased to close to the shutdown temperature.
The period of oscillation will depend on T JM , the dissipated
power, the thermal mass of any heatsink present, and the ambient
temperature.
Figure 3. T JM versus a pull-up or pull-down resistor, R TH , and V THTH .
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
7
相关PDF资料 |
PDF描述 |
|---|---|
| A6264KLPTR-T | IC LED DVR STOP/TAIL 16-TSSOP |
| A6265KLPTR-T | IC LED CTLR HI CURRENT 16-TSSOP |
| A6266KLPTR-T | IC LED CTLR AUTO HI CURR 16TSSOP |
| A6267KLPTR-T | IC LED CTLR AUTO HI CURR 16TSSOP |
| A6268KLPTR-T | IC LED CTLR AUTOMOBILE 16TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| A6263KLJTR-T | 制造商:Allegro MicroSystems LLC 功能描述:IC LED ARRAY DRIVER AUTO 8SOIC 制造商:Allegro MicroSystems LLC 功能描述:FOUR CHANNEL LINEAR LED DRIVER |
| A6264 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A6264 is a linear, programmable current regulator providing up to 100 mA from each of four outputs to drive arrays of high brightness LEDs. |
发布紧急采购，3分钟左右您将得到回复。