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A6285EET-T Datasheet

  • A6285EET-T

  • 16-Channel Constant-Current Latched LED Driver with Open LED...

  • 13頁

  • ALLEGRO   ALLEGRO

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A6285
16-Channel Constant-Current Latched LED Driver
with Open LED Detection and Dot Correction
Features and Benefits
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3.0 to 5.5 V logic supply range
Schmitt trigger inputs for improved noise immunity
Power-On Reset (POR)
Up to 80 mA constant-current sinking outputs
LED open circuit detection (LOD)
Dot correction (DC) for adjusting LED light intensity on
each channel with 7-bit resolution
Low-power CMOS logic and latches
High data input rate up to 30 MHz
Active output pull-ups with enable/disable
20 ns typical staggering delay between outputs
Internal UVLO and thermal shutdown (TSD) circuitry
Fault output flags for an LED open circuit (LOD) or a
thermal shutdown (TSD) condition
Description
The A6285 is designed for LED display applications. This
BiCMOS device includes an On/Off shift register, a Dot
Correction (DC) shift register, accompanying data latches, and
16 MOS constant-current sink drivers with active pull-ups that
can be enabled or disabled as required by the application.
The CMOS shift registers and latches allow direct interfacing
with microprocessor-based systems. With a 3.3 or 5 V logic
supply, typical serial data input rates can reach up to 30 MHz.
The LED drive current level can be set by a single external
resistor, selected by the application designer. A CMOS serial
data output permits cascading of multiple devices in applications
requiring additional drive lines.
Individual LED light intensity can be adjusted to correct for light
intensity variations by using the Dot Correction feature.
Open LED connections can be detected, and then signaled back
to the host microprocessor through the serial data output (SDO
pin). The FAULT output flags an LED open circuit (LOD)
condition or a thermal shutdown (TSD) condition. A staggering
delay on the load outputs during ON/OFF transitions helps to
reduce ground bounce.
Package: 32 Contact QFN (suffix ET)
5 mm 脳 5 mm
0.90 mm nominal overall height
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Not to scale
Typical Application
V
DD
V
LED
V
LED
10
渭F
PE
OUT0
OUT15
100 K惟
SDI
FAULT
Controller
CLK
LE
MODE
OE
SDI
FAULT
CLK
LE
MODE
OE
SDO
V
DD
A6285
100 nF
REXT
SDO
6285-DS

A6285EET-T 產(chǎn)品屬性

  • 73

  • 集成電路 (IC)

  • PMIC - LED 驅(qū)動器

  • -

  • 是

  • -

  • PWM

  • 16

  • 是

  • 背光

  • 顏色，白色 LED

  • 30MHz

  • 3 V ~ 5.5 V

  • 12V

  • 表面貼裝

  • 32-VFQFN 裸露焊盤

  • 32-QFN 裸露焊盤（5x5）

  • 管件

  • -40°C ~ 85°C

  • 620-1224-5

A6285EET-T相關(guān)型號PDF文件下載

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