- 您现在的位置：买卖IC网 > Datasheet目录306 > A6264KLPTR-T (Allegro Microsystems Inc)IC LED DVR STOP/TAIL 16-TSSOP Datasheet资料下载
参数资料
| 型号： | A6264KLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 9/16页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR STOP/TAIL 16-TSSOP |
| 标准包装： | 1 |
| 系列： | * |
| 类型： | 汽车用，高亮度（HBLED） |
| 输出数： | 4 |
| 拓扑： | 恒定电流，线性（LDO），PWM |
| 频率： | * |
| 效率： | * |
| 电流 - 输出 / 通道： | 100mA |
| 输出电压： | * |
| 电源电压： | 6 V ~ 50 V |
| 内部开关： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 16-TSSOP-EP |
| 其它名称： | 620-1364-6 |
A6264
Automotive Stop/Tail LED Array Driver
Application Information
+ P REGA + P REGB + P REGC + P REGD
Power Dissipation
The most critical design considerations when using a linear regu-
lator such as the A6264 are the power produced internally as heat
and the rate at which that heat can be dissipated.
There are three sources of power dissipation in the A6264:
? The quiescent power to run the control circuits
? The power in the reference circuit
? The power due to the regulator voltage drop
The elements relating to these dissipation sources are illustrated
in figure 3.
Quiescent Power The quiescent power is the product of the
Note that the voltage drop across the regulator, V REG , is always
greater than the specified minimum drop-out voltage, V DO . The
output current is regulated by making this voltage large enough
to provide the voltage drop from the supply voltage to the total
forward voltage of all LEDs in series, V LED .
The total power dissipated in the A6264 is the sum of the qui-
escent power, the reference power, and the power in each of the
four regulators:
P DIS = P Q + P REF
(9)
The power that is dissipated in each string of LEDs is:
quiescent current, I INQ , and the supply voltage, V IN , and is not
related to the regulated current. The quiescent power, P Q , is there-
fore defined as:
P LEDx = V LEDx × I LEDx
(10)
P Q = V IN × I INQ (6)
Reference Power The reference circuit draws the reference
current from the supply and passes it through the reference resis-
tor to ground. The reference current is 8% of the output current
on any one active output. When FULL is high, the reference
circuit power is the product of the reference current and the dif-
ference between the supply voltage and the reference voltage,
where x is A, B, C, or D, and V LEDx is the voltage across all
LEDs in the string.
VIN
A6264
typically 1.2 V. The reference power, P REF , is therefore defined
as:
I LAx
V REG
P REF = ( V IN – V REF ) × ? ? REF +
R REFH ? ?
? V
? R REF
V REF ? ?
(7)
LAx
Regulator Power In most application circuits the largest dis-
V IN
I REF
I INQ
sipation will be produced by the output current regulators. The
power dissipated in each current regulator is simply the product
of the output current and the voltage drop across the regulator.
The total current regulator dissipation is the sum of the dissipa-
IREF
V LED
tion in each output regulator. The regulator power for each output
V REF
R REF
is defined as:
GND
P REGx = ( V IN – V LEDx ) × I LEDx
where x is 1, 2, 3, or 4.
(8)
Figure 3. Internal power dissipation sources.
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
9
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
| A6280EA-T | IC LED DRIVER PWM CONTROL 16-DIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| A6264KLYTR-T | 功能描述:IC LED DVR STOP/TAIL 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 |
| A6265 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A6265 is a DC-to-DC converter controller, providing a programmable constant current output for driving high power LEDs in series. |
| A6265KLPTR-T | 功能描述:IC LED CTLR HI CURRENT 16-TSSOP 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 |
| A6266 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A6266 is a boost converter controller, providing a programmable constant current output for driving high power LEDs in series. |
| A6266KLPTR-T | 功能描述:IC LED CTLR AUTO HI CURR 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 |
发布紧急采购，3分钟左右您将得到回复。