- 您现在的位置：买卖IC网 > Datasheet目录306 > A6268KLPTR-T (Allegro Microsystems Inc)IC LED CTLR AUTOMOBILE 16TSSOP Datasheet资料下载
参数资料
| 型号： | A6268KLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/19页 |
| 文件大小： | 0K |
| 描述： | IC LED CTLR AUTOMOBILE 16TSSOP |
| 标准包装： | 1 |
| 恒定电流： | 是 |
| 拓扑： | 低端，PWM，SEPIC，降压（降压），升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 车载，背光 |
| 频率： | 100kHz ~ 700kHz |
| 电源电压： | 5 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： | 标准包装 |
| 工作温度： | -40°C ~ 150°C |
| 其它名称： | 620-1473-6 |
A6268
Automotive High Current LED Controller
Features and Benefits
? AEC Q100 Grade 0 Automotive Qualified
? Constant current LED drive
? 5 to 50 V supply
? Boost or buck-boost modes
? Drives up to 15 LEDs in series
? Programmable switching frequency 100 to 700 kHz
? Open LED overvoltage indication and protection
? Single and multiple LED short indication
? LED short to ground and supply protection
? PWM dimming control
? 10 μ A shutdown current including LED leakage
Applications:
? Automotive high power LED lighting systems
? Fog lights, reversing lights, daytime running lights
? Headlights
Package: 16-pin TSSOP with exposed
thermal pad (suffix LP)
Not to scale
Description
The A6268 is a DC-to-DC converter controller, providing a
programmable constant current output for driving high power
LEDs in series. Driving the LEDs in series ensures identical
currents and uniform brightness. For automotive applications,
optimum performance is achieved when driving up to 15 LEDs
at currents up to 1 A.
The A6268 provides a cost-effective solution using an external
logic-level MOSFET and minimum additional external
components. The maximum LED current is set with a single
external sense resistor and can be modified using a current
reference input. Direct PWM control is possible via the Enable
input, which also provides a shutdown mode.
This DC-DC converter can be configured as a ground-referenced
boost converter or as a supply-referenced boost converter
providing buck-boost capability. The buck-boost topology used
ensures that there is no leakage path through the LEDs when
in shutdown and no inrush current at power-up.
Integrated diagnostics and two fault outputs give indication of
VIN and VREG undervoltage, chip overtemperature, output
open circuit, LED short circuit and LED undercurrent, and can
be configured to provide short to supply and short to ground
protection for the LED connections, LED overcurrent and
shorted LED string protection. A unique feature is the ability
to detect one or more shorted LEDs.
The device is provided in a 16-pin TSSOP package with exposed
thermal pad (suffix LP). It is lead (Pb) free, with 100% matte
tin leadframe plating.
Typical Application Diagrams
V BAT 12 V or 24 V (50 V max)
Power net
VIN
V BAT 12 V or 24 V (50 V max)
Power net
VIN
Buck Boost Mode
V BAT (min) Maximum
(V) Quantity of
LEDs
Fault
Flags
VREG
FF1
FF2
LN
LP
Boost Mode
V BAT (min) Maximum
(V) Quantity of
LEDs
Fault
Flags
VREG
FF1
FF2
LN
LP
5 7
6 8
7 10
Enable
EN
A6268
LF
SG
5 8
6 10
7 12
Enable
EN
A6268
LF
SG
8 11
9 13
IREF
CKOUT
SP
8 13
9 15
IREF
CKOUT
SP
V f of each LED = 3.5 V,
D(max) = 85%
OSC
GND
SN
LA
V f of each LED = 3.5 V,
D(max) = 85%
OSC
GND
SN
LA
A6268-DS, Rev. 2
Buck-Boost Mode
(Supply-referenced boost)
Boost Mode
相关PDF资料 |
PDF描述 |
|---|---|
| A6280EA-T | IC LED DRIVER PWM CONTROL 16-DIP |
| A6281EESTR-T | IC LED DRIVER PWM CONTROL 16-QFN |
| A6282ELPTR-T | IC LED DRIVER LINEAR 24-TSSOP |
| A8431EEHTR-T | IC LED DRVR WHITE BCKLGHT 6-MLP |
| A8500EECTR-T | IC LED DRVR WHT/RGB BCKLGT 26QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| A6269 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Automotive LED Array Driver |
| A6269KLJTR-T | 制造商:Allegro MicroSystems 功能描述:TWO CHANNEL LINEAR LED DRIVER 制造商:ALLEGRO MICROSYSTEMS, LLC 功能描述:IC LED DRVR AUTOMOTIVE 8SOICN |
| A626A | 功能描述:ADAPTER PROGRAMMER 32-SSOP RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 类型:MCU 适用于相关产品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、缆线、软件、数据表和用户手册 其它名称:520-1035 |
| A62710-000 | 制造商:TE Connectivity 功能描述:TXR21AB00-0805BI |
| A6271KLPTR-T | 功能描述:LED Driver IC 1 Output DC DC Controller SEPIC, Step-Down (Buck), Step-Up (Boost) Analog, Internal or External PWM Dimming 16-eTSSOP 制造商:allegro microsystems, llc 系列:汽车级，AEC-Q100 包装:剪切带（CT） 零件状态:有效 类型:DC DC 控制器 拓扑:SEPIC，降压（降压），升压（升压） 内部开关:无 输出数:1 电压 - 供电（最低）:4.2V 电压 -?供电（最高）:50V 电压 - 输出:- 电流 - 输出/通道:- 频率:700kHz 调光:模拟，PWM 应用:汽车级 工作温度:-40°C ~ 150°C（TJ） 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽）裸焊盘 供应商器件封装:16-eTSSOP 标准包装:1 |
发布紧急采购，3分钟左右您将得到回复。