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参数资料
| 型号： | A6264KLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 5/16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
Functional Description
The A6264 is a linear current regulator that is designed to pro-
vide drive current and protection for parallel strings of series-
connected high brightness LEDs in automotive applications. It
provides up to four matched programmable current outputs, at
up to 100 mA, with low minimum dropout voltages below the
main supply voltage. For 12 V power net applications optimum
performance is achieved when driving 4 strings of 1 to 3 LEDs,
at currents up to 100 mA per string.
The A6264 is specifically designed for use in stop/tail applica-
tions where the LED current is switched between a high current
(indicating stop or brake) and a lower current (for normal tail
light operation).
Current regulation is maintained and the LEDs protected during a
short to ground at any point in the LED string. A short to ground
on any regulator output terminal will disable that output and set
the fault flag. An open load on any output will set the fault flag
and disable all outputs. Remaining outputs can be re-enabled
by pulling the fault flag output low. Individual outputs can be
IREFH 1.2 V additional high current reference. Summed with
I REF for full current output. Connect resistor, R REFH , to GND to
set this reference current.
LA[1:4] Current source connected to the anode of the first LED in
each string. Connect directly to VIN to disable the respective out-
put. In this document “LAx” indicates any one of the four outputs.
FF Open drain fault flag, used with an external pull-up resistor,
to indicate open, short, or overtemperature conditions. FF is inac-
tive when a fault is present. During an open load condition, FF
can be pulled low to force the remaining outputs on.
LED Current Level
The LED current is controlled by four matching linear current
regulators between the VIN pin and each of the LAx outputs. The
basic equations that determine the nominal output current at each
LAx pin are:
Given FULL = low,
disabled by connecting the output to VIN.
Integrated thermal management reduces the regulated current
level at high internal junction temperatures to limit power dis-
sipation.
I LAx =
and, given FULL = high,
15
R REF
Pin Functions
VIN Supply to the control circuit and current regulators. A small
I LAx =
15
R REF
+
15
R REFH
(1)
value ceramic bypass capacitor, typically 100 nF, should be con-
nected from close to this pin to the GND pin.
GND Ground reference connection. Should be connected directly
where I LAx is in mA, and R REF and R REFH are in k Ω .
In both cases, the output current may be reduced from the set
level by the thermal monitor circuit.
R REF =
R REFH =
to the negative supply.
FULL Logic input to enable high LED current output. Open or
low sets LED current to the base current level. High sets LED
current to the sum of the base current level, and the additional
high current (see Detailed Description of Regulator Operation
section) . Typically connected through a resistor to the stop switch
input.
Conversely the reference resistors may be calculated from:
15
I LAx(LO)
and
15
I LAx(HI) – I LAx(LO)
(2)
IREF 1.2 V base current reference. Used for base (low) level
current output, I REF . Connect resistor, R REF , to GND to set this
reference current.
where I LAx(LO) is the required source current when FULL is low
and I LAx(HI) is the current when FULL is high. I LAx(x) are in mA,
and R REF and R REFH are in k Ω .
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
5
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| 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 |
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