Datasheet > A6268KLPTR-T

A6268KLPTR-T

更新时间： 2024-11-05 12:24:03

品牌	Logo	应用领域
急速微 - ALLEGRO		转换器驱动控制器
页数	文件大小	规格书
19页	369K
描述
The A6268 is a DC-to-DC converter controller, providing a programmable constant current output for driving high power LEDs in series.

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

A6268KLPTR-T 数据手册

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

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,

optimumperformanceisachievedwhendrivingupto15LEDs

at currents up to 1 A.

TheA6268 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.

▪ 10 μA shutdown current including LED leakage

Applications:

ThisDC-DCconvertercanbeconfiguredasaground-referenced

boost converter or as a supply-referenced boost converter

providingbuck-boostcapability.Thebuck-boosttopologyused

ensures that there is no leakage path through the LEDs when

in shutdown and no inrush current at power-up.

▪ Automotive high power LED lighting systems

▪ Fog lights, reversing lights, daytime running lights

▪ Headlights

Package: 16-pin TSSOP with exposed

thermal pad (suffix LP)

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.

Thedeviceisprovidedina16-pinTSSOPpackagewithexposed

thermal pad (suffix LP). It is lead (Pb) free, with 100% matte

tin leadframe plating.

Not to scale

Typical Application Diagrams

(50 V max)

12 V or 24 V

(50 V max)

12 V or 24 V

BAT

Power net

VIN

VREG

Buck Boost Mode

V_BAT(min) Maximum

Boost Mode

V_BAT(min)

Maximum

Quantity of

LEDs

FF1

FF2

FF1

FF2

(V)

Quantity of

LEDs

(V)

Fault

Flags

Fault

Flags

A6268

Enable

IREF

CKOUT

IREF

CKOUT

V_fof each LED = 3.5 V,

D(max) = 85%

V_fof each LED = 3.5 V,

D(max) = 85%

OSC

GND

OSC

GND

Buck-Boost Mode

(Supply-referenced boost)

Boost Mode

A6268-DS, Rev. 1

12 3 4 5 6 7...19

中文翻译

下载PDF

与A6268KLPTR-T相关器件

型号	品牌	获取价格	描述	数据表
A6269	ALLEGRO	获取价格	Automotive LED Array Driver
A6271	ALLEGRO	获取价格	Automotive, High-Current LED Controller
A6271KLPTR-T	ALLEGRO	获取价格	Automotive, High-Current LED Controller
A6272	ALLEGRO	获取价格	Automotive Two-Channel Linear LED Controller with Internal PWM Dimming
A6272KESTR-J2	ALLEGRO	获取价格	Automotive Two-Channel Linear LED Controller with Internal PWM Dimming
A6272KLPTR-T	ALLEGRO	获取价格	Automotive Two-Channel Linear LED Controller with Internal PWM Dimming
A627308	AMICC	获取价格	128K X 8 BIT CMOS SRAM
A627308M	AMICC	获取价格	128K X 8 BIT CMOS SRAM
A627308M-70S	AMICC	获取价格	128K X 8 BIT CMOS SRAM
A627308V	AMICC	获取价格	128K X 8 BIT CMOS SRAM

与A6268KLPTR-T相关文章

英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

13
苹果iPhone 17将全系采用三星/LG显示LTPO OLED面板
2024-11-05

9
三星深化印度制造布局，供应链本地化进程加速
2024-10-29

35
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

31

产品中心

服务支持

精选活动

关于我们

帮助中心

A6268KLPTR-T

A6268KLPTR-T 数据手册

与A6268KLPTR-T相关器件

与A6268KLPTR-T相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

A6268KLPTR-T

A6268KLPTR-T 数据手册

与A6268KLPTR-T相关器件

与A6268KLPTR-T相关文章

您还可以找

您在本页遇到什么问题？