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ADP1653ACPZ-R7

P1-P3P4-P6P7-P9P10-P11
Description
The A6277 is specifically designed for LED display
applications. Each BiCMOS device includes an 8-bit CMOS
shift register, accompanying data latches, and eight NPN
constant-current sink drivers. Two package styles and two
operating temperature ranges are available.
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 determined by the user 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. In addition, a HIGH/LOW function enables full
selected current with the application of a logic low, or 50%
selected current with the application of a logic high.
Two package styles are provided, a through-hole DIP (suffix
A), and a surface-mount SOIC (LW). The copper leadframe
and low logic-power dissipation allow the DIP to sink 122 mA
through all outputs continuously over the operating temperature
range (1.0 V drop, 85°C). Both packages are lead (Pb) free,
with 100% matte-tin leadframe plating.
26185.202F
Features and Benefits
▪ Up to 150 mA constant-current outputs
▪ Undervoltage lockout
▪ Low-power CMOS logic and latches
▪ High data input rate
▪ Similar to Toshiba TD62715FN
▪ High/low output current function
▪ Digital dimming control
8-Bit Serial Input Constant-Current Latched LED Driver
Functional Block Diagram
A6277
Packages
Not to scale
20-pin DIP
(A package)
20-pin SOICW
(LW package)
8-Bit Serial Input Constant-Current Latched LED Driver
A6277
2
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Absolute Maximum Ratings*
Characteristic Symbol Notes Rating Units
Supply Voltage V
DD
7.0 V
Output Voltage Range V
O
–0.5 to 24 V
Input Voltage Voltage V
I
–0.4 to V
DD
+ 0.4 V
Output Current I
O
150 mA
Operating Ambient Temperature T
A
Range E –40 to 85 ºC
Maximum Junction Temperature T
J
(max) 150 ºC
Storage Temperature T
stg
–55 to 150 ºC
* Caution: These CMOS devices have input static protection (Class 2) but are still susceptible to damage if exposed to extremely high static electrical charges.
Selection Guide
Part Number Packing Package
A6277EA-T* 20-pin DIP 18 per tube
A6277ELWTR-T 20-pin SOICW 1000 per reel
*Variant is in production but has been determined to be LAST TIME BUY. This classification indicates that the variant
is obsolete and notice has been given. Sale of the variant is currently restricted to existing customer applications. The
variant should not be purchased for new design applications because of obsolescence in the near future. Samples are no
longer available. Status date change November 2, 2009. Deadline for receipt of LAST TIME BUY orders is April 30, 2010.
Thermal Characteristics may require derating at maximum conditions, see application information
Characteristic Symbol Test Conditions* Value Units
Package Thermal Resistance
R
θJA
Package A, on 1-layer PCB 60 ºC/W
Package LW, 1-layer PCB 90 ºC/W
*Additional thermal information available on the Allegro website.
50 75 100 125 150
2.5
0.5
0
ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS
AMBIENT TEMPERATURE IN oo
oo
C
2.0
1.5
1.0
25
SUFFIX 'A', R = 60oC/W
QJA
SUFFIX 'LW', R = 90oC/W
QJA
8-Bit Serial Input Constant-Current Latched LED Driver
A6277
3
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
ELECTRICAL CHARACTERISTICS at T
A
= +25oC, V
H/L
= V
DD
= 5 V (unless otherwise noted).
Limits
tinU.xaM.pyT.niMsnoitidnoC tseTlobmyScitsiretcarahC
Supply Voltage Range V
DD
V5.50.55.4gnitarepO
Under-Voltage Lockout V
DD(UV)
V
DD
V0.4–4.3V 5 ot 0 =
Output Current I
O
V
CE
= 1.0 V, R
EXT
= 160 7 100 120 140 mA
(any single output)
V
CE
= 0.4 V, R
EXT
= 470 7 34 42 48 mA
Output Current Matching $I
O
0.4 V b V
CE(A)
= V
CE(B)
b 1.0 V:
Ryna neewteb ecnereffid(
EXT
= 160 7 – p1.5 p6.0 %
two outputs at same V
CE
)
R
EXT
= 470 7 – p1.5 p6.0 %
Output Leakage Current I
CEX
V
OH
0.50.1–V 02 = MA
Logic Input Voltage V
IH
0.7V
DD
––V
V
IL
––0.3V
DD
V
SERIAL DATA OUT Voltage V
OL
I
OL
V4.0––Am 0.1 =
(SDO
1
& SDO
2
)
V
OH
I
OH
V––6.4Am 0.1- =
Input Resistance R
I
ENABLE input, pull up 150 300 600 k7
LATCH & HIGH/LOW inputs, pull down 100 270 400 k7
Supply Current I
DD(OFF)
R
EXT
= open, V
OE
= 5 V – 0.8 1.6 mA
R
EXT
= 470 7, V
OE
= 5 V 3.5 6.5 9.5 mA
R
EXT
= 160 7, V
OE
= 5 V 141722mA
I
DD(ON)
R
EXT
= 470 7, V
OE
= 0 V 5.0 10 15 mA
R
EXT
= 160 7, V
OE
= 0 V 202740mA
Typical Data is at V
DD
= 5 V and is for design information only.
P1-P3P4-P6P7-P9P10-P11

ADP1653ACPZ-R7

Mfr. #:
Buy ADP1653ACPZ-R7
Manufacturer:
Analog Devices / Linear Technology
Description:
LED Lighting Drivers Dual Interface Flash LED Driver
Lifecycle:
New from this manufacturer.
Delivery:
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