Datasheet > A6284

A6284

更新时间： 2024-02-24 18:08:27

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
24页	608K
描述
Linear Current Regulator and Controller for Automotive LED Arrays

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技术参数
数据手册

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A6284 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	包装说明：	,
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	1.7
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	湿度敏感等级：	2
峰值回流温度（摄氏度）：	NOT SPECIFIED	处于峰值回流温度下的最长时间：	NOT SPECIFIED
Base Number Matches：	1

A6284 数据手册

Linear Current Regulator and Controller

for Automotive LED Arrays

A6274, A6274-1

A6284, A6284-1

ELECTRICAL CHARACTERISTICS (continued): Valid at V_IN= 14 V, V_ENx= 3.3 V; ● indicates speciﬁcations across the full operating tempera-

ture range with T_J= –40°C to 150°C; other speciﬁcations are at T_J= 25°C, unless noted otherwise. Refer to Figure 1 for typical application circuit.

Characteristics

LOGIC SIGNAL SPECIFICATIONS

FFn Output (Open Drain)

Symbol

Test Conditions

Min.

Typ.

Max.

Unit

V_FFn(L)

I_FFn(LKG)

V_LOGIC(L)

V_LOGIC(H)

I_FFn= 1 mA, fault asserted

–

–1

–

0.4

µA

FFn Output Leakage Current¹

PWMIN, ENx Low Voltage

V_FFn= 12 V, fault not asserted

●

0.8

–

PWMIN, ENx High Voltage

MODE = 1; FFn pin acts as bidirectional

pin when MODE = 1

FFn Input Low Voltage

V_FFLOGIC(L)

●

–

0.8

FFn Input High Voltage

V_FFLOGIC(H)

V_LOGIC(HYS)

V_LOGIC(HYS1)

R_PD(ENx)

2.1

150

–

−

PWMIN Input Hysteresis

ENx Input Hysteresis

270

–

kΩ

ENx Internal Pull-Down Resistance

COMP SPECIFICATIONS

COMP Source Current

−

200

I_COMP(SOURCE)

I_COMP(SINK)

I_COMP(START)V_LEDxis < regulation voltage

−

320

–320

−

µA

COMP Sink Current²

COMP Startup Sinking Current

For input and output current specifications, negative current is defined as coming out of the node or pin (sourcing), and positive current is defined as going into the node

or pin (sinking).

Ensured by design and characterization, not production tested.

Max limit ensured by design and characterization, not production tested.

LED accuracy is defined for A6274 as |[1 – (R_ISETx× I_LED(avg)÷ 298)]| and for A6284 as |[1 – (R_ISETx× I_LED(avg)÷ 590)]|,

where I_LED(avg)is the average of I_LED1through I_LED6, R_ISETxis in kΩ, and I_LEDis in mA.

LED current matching is defined as [(I_LEDx– I_LED(avg)) ÷ I_LED(avg)], with I_LED(avg)as defined in Footnote 3.

Allegro MicroSystems, LLC

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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