Datasheet > A6214KLKTR-T

A6214KLKTR-T

更新时间： 2024-11-06 01:19:47

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
25页	1848K
描述
2 A maximum output over operating temperature range

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A6214KLKTR-T 数据手册

A6214 and A6216

Automotive-Grade, Constant-Current 2 A

PWM Dimmable Buck Regulator LED Driver

DESCRIPTION

FEATURES AND BENEFITS

The A6214 is a single-IC switching regulator that provides

constant-currentoutputtodrivehigh-powerLEDs.Itintegrates

ahigh-sideN-channelDMOSswitchforDC-to-DCstep-down

(buck) conversion. A true average current is output using a

cycle-by-cycle, controlled on-time method.

• AEC-Q100 qualified

• Supply voltage 4.5 to 55 V

• 2 A maximum output over operating temperature range

• Integrated MOSFET switch

• Able to use either Schottky or silicon low-side diode

• True average output current control

• Internal control loop compensation

• Integrated 5 V, 10 mA regulator for driving external load

• PWM dimming via direct logic input down to 0.1% at 200 Hz

• Standalone internal PWM dimming (A6216)

• Analog dimming for brightness calibration and thermal

foldback

• Low-power shutdown (1 µA typical)

• Fault flag output (A6216)

• LED string open and short protection

• Cycle-by-cycle current limit

Output current is user-selectable by an external current sense

resistor. Output voltage is automatically adjusted to drive

various numbers of LEDs in a single string. This ensures the

optimal system efficiency.

LED dimming is accomplished by a direct logic input

pulse-width-modulation (PWM) signal at the Enable pin.

Alternatively,anAnalogDimminginputcanbeusedtocalibrate

theLEDcurrent,orimplementthermalfoldbackinconjunction

with external NTC thermistor.

TheA6216 has the added capability to generate its own PWM

dimming frequency and duty cycle in stand-alone mode.

• Undervoltage lockout (UVLO) and thermal shutdown (TSD)

• Robust protection against:

The A6214 is provided in a compact 10-pin narrow SOIC

package (suffix LK). The A6216 is in 16-pin TSSOP (suffix

LP), both with exposed pad for enhanced thermal dissipation.

It is lead (Pb) free, with 100% matte-tin leadframe plating.

□ Adjacent pin-to-pin short

□ Pin-to-GND short

□ Component open/short faults

PACKAGES:

APPLICATIONS:

A6214: 10-Pin SOICN (suffix LK)

Automotive lighting

• Daytime running lights

• Front and rear fog lights

• Turn/stop lights

Not to scale

A6216: 16-Pin eTSSOP (suffix LP)

• Map light

• Dimmable interior lights

Not to scale

V_IN(4.5 to 55 V)

C_IN

A6214

GND

VIN

C_BOOT

R_ON

R_SENSE

LED+

BOOT

CSH

CSL

TON

External PWM

dimming signal

EN/PWM

ADIM

External analog

dimming signal

ADIM

VCC

C_LED

GND

Figure 1: A6214 (LK Package) Typical Application Circuit

November 1, 2016

A6214-16-DS, Rev. 4

January 21, 2013

12 3 4 5 6 7...25

中文翻译

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与A6214KLKTR-T相关器件

型号	品牌	获取价格	描述	数据表
A6216	ALLEGRO	获取价格	2 A maximum output over operating temperature range
A6216KLPTR-T	ALLEGRO	获取价格	2 A maximum output over operating temperature range
A6217	ALLEGRO	获取价格	Automotive-Grade, Constant-Current PWM Dimmable Buck Regulator LED Driver
A6217-1	ALLEGRO	获取价格	Automotive-Grade, Constant-Current PWM Dimmable Buck Regulator LED Driver
A6217KEJTR-1-J	ALLEGRO	获取价格	Automotive-Grade, Constant-Current PWM Dimmable Buck Regulator LED Driver
A6217KEJTR-J	ALLEGRO	获取价格	Automotive-Grade, Constant-Current PWM Dimmable Buck Regulator LED Driver
A6217KLJTR-1-T	ALLEGRO	获取价格	Automotive-Grade, Constant-Current PWM Dimmable Buck Regulator LED Driver
A6217KLJTR-T	ALLEGRO	获取价格	Automotive-Grade, Constant-Current PWM Dimmable Buck Regulator LED Driver
A6219DS	ALLEGRO	获取价格	Dual Full-Bridge PWM Motor Driver
A-621D	OKAYA	获取价格	SURGE ABSORBER

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