Datasheet > A6268KLPTR-T

A6268KLPTR-T

更新时间： 2022-04-08 10:37:30

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.

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A6268KLPTR-T 数据手册

A6268

Automotive High Current LED Controller

ELECTRICAL CHARACTERISTICS¹Valid at T_J= –40°C to 150°C, V_IN= 5 to 40 V; unless otherwise noted

Characteristics

Supply and Reference

Symbol

Test Conditions

Min.

Typ.

Max.

Unit

V_INFunctional Operating Range²

–

μA

I_INQ

I_INS

SG open circuit

EN = GND

V_INQuiescent Current

–

5.15

–

_REG= 0 to 2 mA, V_IN≥ 5.3 V

4.85

4.7

VREG Output Voltage

V_REG

I_REG= 2 mA, V_IN= 5 V

VREG Current Limit

Gate Output Drive

Turn-On Time

V_REGCL

–

t_r

t_f

C_LOAD= 1 nF, 20% to 80%

C_LOAD= 1 nF, 80% to 20%

t_ON× f_OSC

–

1.7

–

Turn-Off Time

Maximum Duty Cycle

–

T_J= 25°C, I_GHx= –100 mA

T_J= 150°C, I_GHx= –100 mA

T_J= 25°C, I_GLx= 100 mA

T_J= 150°C, I_GLx= 100 mA

–

Pull-Up On Resistance

R_DS(on)UP

–

3.5

–

0.75

–

Pull-Down On Resistance

Output High Voltage

R_DS(on)DN

–

1.5

V_REG

0.1

–

V_SGH

V_SGL

I_SG= –100 μA

I_SG= 100 μA

–

V_REG

0.1

Output Low Voltage

–

Logic Inputs and Outputs

Fault Output (Open Drain)

Fault Output FF1 Sink Current

Fault Output FF1 Leakage Current¹

Fault Output FF2 Leakage Current¹

Input Low Voltage

V_OL

I_OH(snk)

I_OH1(lkg)

I_OH2(lkg)

V_IL

I_OL= 1 mA, fault not asserted

0.4 V < V_O< 50 V, fault not asserted

V_O= 12 V, fault asserted

–

1.3

–

0.4

–

μA

–1

–5

–

V_O= 5 V, fault asserted

–

0.8

–

Input High Voltage

V_IH

–

Input Hysteresis

V_Ihys

120

–

180

8.4

200

–

Enable Input Internal Clamp Voltage

Enable Input Current Limit Resistor

Boost Mode Select Voltage

Buck-Boost Mode Select Voltage

Disable Time

V_ENC

R_EN

–

Between EN and internal clamp

Defined by V_LN

–

kΩ

V_LNB

V_LNBB

t_DIS

–

0.8

–

Defined by V_LN

3.5

–

f_OSC= 350 kHz

–

Continued on the next page…

Allegro MicroSystems, Inc.

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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