A6276 Allegro MicroSystems, A6276 Datasheet

A6276

Manufacturer Part Number

A6276

Description

16-BIT SERIAL-INPUT/ CONSTANTCURRENT LATCHED LED DRIVER

Manufacturer

Allegro MicroSystems

Datasheet

1.A6276.pdf (12 pages)

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Current page: 1 of 12
Download datasheet (152Kb)

Note that the A6276EA (DIP) and the A6276ELW

(SOIC) are electrically identical and share a

common terminal number assignment.

Caution: These CMOS devices have input

static protection (Class 2) but are still suscep-

tible to damage if exposed to extremely high

static electrical charges.

Supply Voltage, V

Output Voltage Range,

Output Current, I

Ground Current, I

Input Voltage Range,

Package Power Dissipation,

Operating Temperature Range,

Storage Temperature Range,

GROUND

ENABLE

DATA IN

SERIAL

CLOCK

LATCH

OUT

.................... -0.4 V to V

..................................... See Graph

............................. -40 C to +85 C

........................... -55 C to +150 C

............................ -0.5 V to +17 V

LATCHES

GND

........................ 90 mA

REGULATOR

...................... 7.0 V

............... 1475 mA

+ 0.4 V

LOGIC

SUPPLY

SERIAL

DATA OUT

OUTPUT

ENABLE

OUT

Dwg. PP-029-11

OUT

EXT

16-BIT SERIAL-INPUT, CONSTANT-

CURRENT LATCHED LED DRIVER

6276

display applications. Each BiCMOS device includes a 16-bit CMOS

shift register, accompanying data latches, and 16 npn constant-current

sink drivers. Except for package style and allowable package power

dissipation, the two devices are identical.

microprocessor-based systems. With a 5 V logic supply, typical serial

data-input rates are up to 20 MHz. The LED drive current is deter-

mined by the user’s selection of a single resistor. A CMOS serial data

output permits cascade connections in applications requiring additional

drive lines. For inter-digit blanking, all output drivers can be disabled

with an ENABLE input high. Similar 8-bit devices are available as the

A6275EA and A6275ELW.

surface-mount SOIC (suffix LW). Under normal applications, a copper

lead frame and low logic-power dissipation allow the dual in-line

package to sink maximum rated current through all outputs continu-

ously over the operating temperature range (90 mA, 0.75 V drop,

+85 C). Both devices are also available for operation over the standard

temperature range of -20 C to +85 C. To order, change the suffix

letter ‘E’ to ‘S’.

Always order by complete part number, e.g., A6276EA .

The A6276EA and A6276ELW are specifically designed for LED-

The CMOS shift register and latches allow direct interfacing with

Two package styles are provided for through-hole DIP (suffix A) or

To 90 mA Constant-Current Outputs

Under-Voltage Lockout

Low-Power CMOS Logic and Latches

High Data Input Rate

Functional Replacement for TB62706BN/BF

Related parts for A6276

A6276 Summary of contents

Page 1

... C). Both devices are also available for operation over the standard temperature range order, change the suffix letter ‘E’ to ‘S’ Constant-Current Outputs Under-Voltage Lockout + 0.4 V Low-Power CMOS Logic and Latches High Data Input Rate Functional Replacement for TB62706BN/BF Always order by complete part number, e.g., A6276EA . ...

Page 2

... Dwg. GP-022-3 SERIAL-PARALLEL SHIFT REGISTER LATCHES OUT OUT 1 2 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 2000, 2001 Allegro MicroSystems, Inc LOGIC UVLO SUPPLY SERIAL DATA OUT OUTPUT ENABLE (ACTIVE LOW) MOS BIPOLAR ...

Page 3

IN IN www.allegromicro.com V DD Dwg. EP-010- Dwg. EP-010-13 16-BIT SERIAL-INPUT, CONSTANT-CURRENT LATCHED LED DRIVER Dwg. EP-010- OUT Dwg. EP-063-6 6276 ...

Page 4

SERIAL-INPUT, CONSTANT-CURRENT LATCHED LED DRIVER Typical Data and is for design information only. DD 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 ...

Page 5

SERIAL-INPUT, CONSTANT-CURRENT LATCHED LED DRIVER ...

Page 6

SERIAL-INPUT, CONSTANT-CURRENT LATCHED LED DRIVER CLOCK SERIAL DATA IN SERIAL DATA OUT LATCH ENABLE OUTPUT ENABLE OUT OUTPUT ENABLE OUT A. Data Active Time Before Clock Pulse (Data Set-Up Time), t .......................................... 60 ns su(D) B. Data Active ...

Page 7

+ C DUTY CYCLE IN PER CENT 100 ...

Page 8

SERIAL-INPUT, CONSTANT-CURRENT LATCHED LED DRIVER 100 + C ...

Page 9

... DD The products described here are manufactured under one or more U.S. patents or U.S. patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current ...

Page 10

SERIAL-INPUT, CONSTANT-CURRENT LATCHED LED DRIVER The load current per bit ( set by the external resistor shown in the figure below. EXT 100 100 200 300 500 ...

Page 11

MAX 0.015 MIN 0.022 0.014 24 7.11 6.10 1 1.77 1.15 5.33 MAX 0.39 MIN 0.558 0.356 NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown. 2. Lead spacing ...

Page 12

SERIAL-INPUT, CONSTANT-CURRENT LATCHED LED DRIVER 0.2992 0.2914 0.020 0.013 0.0926 0.1043 7.60 7.40 0.51 0.33 2.65 2.35 NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown. 2. Lead spacing tolerance is non-cumulative. 3. Supplied ...

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