A8503 View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
A8503
Allegro MicroSystems
'A8503' PDF : 17 Pages View PDF
A8503
High Efficiency 6-Channel, 2 MHz, WLED/RGB Driver for
Medium Displays, with Integrated 55 V Power Switch
Features and Benefits (continued)
▪ Extends battery life
▫ Efficiency optimized for 3-cell notebooks
▫ 0.1 μA shutdown current
▫ Unique architecture eliminates external voltage divider and
associated battery drain
▪ Rugged and small footprint solution
▫ 55 V, 2 A DMOS switch in 4 mm × 4 mm package—allows
IPC-2221/2 / IPC-D-275 compliant PCB layout
Description (continued)
EN (enable) and PWM (dimming) pins to comply with popular
notebook backlight control interfaces.
The device package is a 26-contact, 4 mm × 4 mm, 0.75 mm
nominal overall height QFN, with exposed pad for enhanced thermal
dissipation. It is lead (Pb) free, with 100% matte tin leadframe
plating.
Selection Guide
Part Number
A8503GECTR-T
Packing
1500 pieces per 7-in. reel
Package
26-pin QFN/MLP with exposed thermal pad
Absolute Maximum Ratings
Characteristic
SW Pins
LED1 through LED6 Pins
OVP Pin
Remaining Pins
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Symbol
VSW
VLEDx
VOVP
TA
TJ(max)
Tstg
Range G
Notes
Rating
–0.3 to 57
–0.3 to 34
–0.3 to 47
–0.3 to 7
–40 to 105
150
–55 to 150
Units
V
V
V
V
ºC
ºC
ºC
Thermal Characteristics
Characteristic
Symbol
Test Conditions*
Package Thermal Resistance
RθJA
On 4-layer PCB based on JEDEC standard
*Additional thermal information available on the Allegro website
Value Units
35 ºC/W
Allegro MicroSystems, Inc.
2
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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