Allegro Microsystems A6276ELWTR

Cross Number:

Item Description: LED DRVR 5V 24-Pin SOIC W T/R

Qty Price
1 - 4 $4.65221
5 - 8 $3.63013
9 - 13 $3.17196
14 - 17 $2.96050
18 + $2.74903



Other Cross Reference

Manufacturer Date Code Qty Available Qty
Allegro Microsystems 0334
  • Freelance Stock: 20
    Ships Immediately





Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

Data Sheet
26185.201E
6276
16-BIT SERIAL-INPUT, CONSTANT-
CURRENT LATCHED LED DRIV ER
The A6276 is specifically designed for LED-display applications.
Each BiCMOS device includes a 16-bit CMOS shift register, accom-
panying data latches, and 16 npn constant-current sink drivers. Except
for package style and allowable package power dissipation, the device
options are identical.
The CMOS shift register and latches allow direct interfacing with
microprocessor-based systems. With a 5 V logic supply, typical serial
data-input rates are up to 20 MHz. The LED drive current is de ter -
mined by the users 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.
Three package styles are provided: through-hole DIP (suffix A),
surface-mount SOIC (suffix LW) and TSSOP with exposed thermal pad
(suffix LP). Under normal applications, a copper lead frame and low
logic-power dissipation allow the dual in-line package to sink maxi-
mum rated current through all outputs con tin u ous ly over the operating
temperature range (90 mA, 0.75 V drop, +85°C).
Note that three packages offered are electrically
identical and share a common terminal number as-
signment.
ABSOLUTE MAXI MUM RATINGS
Supply Voltage, V
DD
....................... 7.0 V
Output Voltage Range,
V
O
............................. -0.5 V to +17 V
Output Current, I
O
........................ 90 mA
Ground Current, I
GND
.............. 1475 mA
Input Voltage Range,
V
I
.................... -0.4 V to V
DD
+ 0.4 V
Package Power Dissipation,
P
D
..................................... See Graph
Operating Temperature Range,
T
A
............................. -40°C to +85°C
Storage Temperature Range,
T
S
........................... -55°C to +150°C
Caution: These CMOS devices have input static
protection (Class 2) but are still sus cep ti ble
to damage if exposed to extremely high static
electrical charges.
FEATURES
To 90 mA Constant-Current Outputs
Under-Voltage Lockout
Low-Power CMOS Logic and Latches
High Data Input Rate
Functional Replacement for TB62706BN/BF
A6276ELW
GROUND
REGISTER
LATC HE S
1
2
3
18
19
20
21
23
4
5
6
7
22
24
SERIAL
DAT A O UT
LOG IC
SUPPLY
SERIAL
DAT A IN
OUTP UT
ENABLE
LATC H
ENABLE
CLOCK CK
V
DD
OE
OUT
1
OUT
2
OUT
0
OUT
12
OUT
14
OUT
13
OUT
3
OUT
15
R
EXT
I
REGULATOR
L
O
12
9
10
11
OUT
5
OUT
6
OUT
4
OUT
7
13
14
15
16
8 17
Dwg. P P -029-1 1
OUT
8
OUT
10
OUT
9
OUT
11
Selection Guide
Part Number Pb-free* Package Packing
Ambient
Temperature (°C)
A6276EA-T Yes 24-pin DIP 15 per tube –40 to 85
A6276ELP-T Yes 24-pin TSSOP 62 per tube –40 to 85
A6276ELPTR-T Yes 24-pin TSSOP 4000 per reel –40 to 85
A6276ELW-T Yes 24-pin SOICW 31 per tube –40 to 85
A6276ELWTR-T Yes 24-pin SOICW 1000 per reel –40 to 85
A6276SLW-T Yes 24-pin SOICW 31 per tube –20 to 85
A6276SLWTR-T Yes 24-pin SOICW 1000 per reel –20 to 85
*Pb-based variants are being phased out of the product line. The variants cited in this
footnote are in production but have been determined to be NOT FOR NEW DESIGN.
This classification indicates that sale of this device is currently restricted to existing
customer applications. The variants should not be purchased for new design applica-
tions because obsolescence in the near future is probable. Samples are no longer
available. Status change: May 1, 2006. These variants include:A6276EA, A6276ELW,
A6276ELWTR, A6276SA, A6276SLW, and A6276SLWTR.
6276
16-BIT SERIAL-INPUT,
CONSTANT-CURRENT
LATCHED LED DRIV ER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
2
Copyright © 2000, 2003 Allegro MicroSystems, Inc.
FUNCTIONAL BLOCK DI A GRAM
2.5
0.5
2.0
3.5
3.0
4.0
1.5
1.0
0
50 75 100 125 150
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
AMBIENT TEMPERATURE IN °°
°°
C
25
24-PIN DIP, R
θJA
=50°C/W
24-PIN TSSOP*, R
θJA
=32°C/W
24-LEAD SOIC, R
θJA
= 85°C/W
*Mounted on single-layer, two-sided PCB, with 3.8 in
2
copper each side;
additional information on Allegro Web site
MOS
BIPOLAR
GROUND
LATCH
ENABLE
OUTPUT ENABLE
(ACTIVE LOW)
SERIAL
DATA OUT
CLOCK
SERIAL
DATA IN
SERIAL-PARALLEL SHIFT REGISTER
LATCHES
V
DD
LOGIC
SUPPLY
R
EXT
OUT
0
OUT
1
Dwg. FP-013-3
OUT
2
OUT
N
I
REGULATOR
O
UVLO
6276
16-BIT SERIAL-INPUT,
CONSTANT-CURRENT
LATCHED LED DRIVER
www.allegromicro.com
3
CLOCK and SERIAL DATA IN SERIAL DATA OUT
LATCH ENABLEOUTPUT ENABLE (active low)
Dwg. EP-010-11
IN
V
DD
Dwg. EP-010-12
IN
V
DD
Dw
g
. EP-010-13
IN
V
DD
TRUTH TABLE
Serial Shift Register Contents Serial Latch Latch Contents Output Output Contents
Data Clock Data Enable Enable
Input Input I
1
I
2
I
3
... I
N-1
I
N
Output Input I
1
I
2
I
3
... I
N-1
I
N
Input I
1
I
2
I
3
... I
N-1
I
N
HHR
1
R
2
... R
N-2
R
N-1
R
N-1
LLR
1
R
2
... R
N-2
R
N-1
R
N-1
XR
1
R
2
R
3
... R
N-1
R
N
R
N
XXX...X X X L R
1
R
2
R
3
... R
N-1
R
N
P
1
P
2
P
3
... P
N-1
P
N
P
N
HP
1
P
2
P
3
... P
N-1
P
N
LP
1
P
2
P
3
... P
N-1
P
N
XXX...X X H H H H ... H H
L = Low Logic (Voltage) Level H = High Logic (Voltage) Level X = Irrelevant P = Present State R = Previous State
V
DD
Dw
g
. EP-063-6
OUT
12345NEXT

Freelance Electronics
13197 Sandoval Street
Santa Fe Springs, CA 90670

Hours of Operation
Monday-Friday 7:30am-4:30pm PST
(Deadline for next day shipment 2:00pm PST)

Trustworthy Standards Serving the Electronic Components
Industry since 1986

Government Cage code#-1V4R6
Duns Number# 788130532
Certified Small Disadvantaged Business