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

Pin-out Diagrams

Package A

Package LW

GROUND

SERIAL

DATA IN

CLOCK

1

2

3 CK

LATCH

ENABLE

4L

OUT 0 5

OUT 1 6

OUT 2 7

OUT 3 8

V DD

16

LOGIC

SUPPLY

IO

REGULATOR

15 R EXT

SERIAL

14 DATA OUT

REGISTER

LATCHES

OE 13 OUTPUT

ENABLE

12 OUT 7

11 OUT 6

10 OUT 5

9 OUT 4

GROUND

SERIAL

DATA IN

CLOCK

1

2

3 CK

LATCH

ENABLE

4L

OUT 0 5

OUT 1 6

OUT 2 7

OUT 3 8

V DD

16

LOGIC

SUPPLY

IO

REGULATOR

15 R EXT

SERIAL

14 DATA OUT

REGISTER

LATCHES

OE 13 OUTPUT

ENABLE

12 OUT 7

11 OUT 6

10 OUT 5

9 OUT 4

TERMINAL DESCRIPTION

Terminal No.

1

2

3

4

5-12

13

Terminal Name

GND

SERIAL DATA IN

CLOCK

LATCH ENABLE

OUT0-7

OUTPUT ENABLE

14

SERIAL DATA OUT

15

REXT

16

SUPPLY

Function

Reference terminal for control logic.

Serial-data input to the shift-register.

Clock input terminal for data shift on rising edge.

Data strobe input terminal; serial data is latched with high-level input.

The eight current-sinking output terminals.

When (active) low, the output drivers are enabled; when high, all output driv-

ers are turned OFF (blanked).

CMOS serial-data output to the following shift-register.

An external resistor at this terminal establishes the output current for all sink

drivers.

(VDD) The logic supply voltage (typically 5 V).

Allegro MicroSystems, Inc.

9

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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