A6275ELW データシートの表示（PDF） - Allegro MicroSystems

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A6275ELW

8-Bit Serial Input Constant-Current Latched LED Driver

Allegro MicroSystems 

A6275

Serial-Input Constant-Current Latched LED Driver

with Open LED Detection and Dot Correction

SWITCHING CHARACTERISTICS at TA = 25°C, VDD = VIH = 5 V, VCE = 0.4 V, VIL = 0 V,

REXT = 470 Ω, IO = 40 mA, VL = 3 V, RL = 65 Ω, CL = 10.5 pF.

Characteristic

Propagation Delay Time

Propagation Delay Time

Output Fall Time

Output Rise Time

Symbol

tpHL

tpLH

tf

tr

Test Conditions

CLOCK-OUTn

LATCH-OUTn

ENABLE-OUTn

CLOCK-SERIAL DATA OUT

CLOCK-OUTn

LATCH-OUTn

ENABLE-OUTn

CLOCK-SERIAL DATA OUT

90% to 10% voltage

10% to 90% voltage

Limits

Min. Typ. Max.

Unit

– 350 1000

ns

– 350 1000

ns

– 350 1000

ns

–

40

–

ns

– 300 1000

ns

– 300 1000

ns

– 300 1000

ns

–

40

–

ns

150 350 1000

ns

150 300 600

ns

RECOMMENDED OPERATING CONDITIONS

Characteristic

Supply Voltage

Output Voltage

Output Current

Logic Input Voltage

Clock Frequency

Symbol

VDD

VO

IO

IOH

IOL

VIH

VIL

fCK

Conditions

Continuous, any one output

SERIAL DATA OUT

SERIAL DATA OUT

Cascade operation

Min. Typ. Max.

Unit

4.5 5.0 5.5

–

1.0 4.0

–

–

90

–

– -1.0

–

–

1.0

0.7VDD

-0.3

–

– VDD + 0.3

– 0.3VDD

–

10

V

V

mA

mA

mA

V

V

MHz

Allegro MicroSystems, Inc.

5

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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