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AS1119 データシート(PDF) 2 Page - ams AG

部品番号 AS1119
部品情報  144-LED Cross-Plexing Driver with 320mA Charge-Pump
PDF  31 Pages
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メーカー  AMSCO [ams AG]
ホームページ  http://www.ams.com
Logo AMSCO - ams AG

AS1119 データシート(HTML) 2 Page - ams AG

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www.austriamicrosystems.com/LED-Driver-ICs/AS1119
Revision 1.04
1 - 30
Data sheet
AS1119
144-LED Cross-Plexing Driver with 320mA Charge-Pump
1 General Description
The AS1119 is a compact LED driver for 144 (90) single LEDs. The
devices can be programmed via an I²C compatible interface.
The AS1119 offers two blocks driving each 72 LEDs (3 blocks each
30LEDs) with 1/9 (1/6) cycle rate. The required lines to drive all 144
(90 )LEDs are reduced to 18 by using the cross-plexing feature opti-
mizing space on the PCB. Every block driving 72(30) LEDs can be
analog dimmed from 1 to 30mA in 256 steps (8 bit).
Additionally each of the 144 (90) LEDs can be dimmed individually
with 8-bit allowing 256 steps of linear dimming. To reduce CPU
usage up to 6 frames can be stored with individual time delays
between frames to play small animations automatically.
The AS1119 operates from 2.7V to 5.5V and includes a 320mA
charge-pump to drive also white LEDs. The charge-pump operates
in 2:3 and 1:2 mode.
The AS1119 features very low shutdown and operational current.
The device is available in a ultrasmall 36-pin WL-CSP.
Figure 1. AS1119 - Typical Application Diagram
2 Key Features
1MHz I²C-Compatible Interface
Open and Shorted LED Error Detection
144 LEDs in Dot Matrix
Low-Power Shutdown Current
Individual 8-bit LED PWM Control
8-bit Analog Brightness Control
(1:1), 2:3, 1:2 320mA Charge Pump
6 Frames Memory for Animations
System-clk synchronisation for multiple devices
Supply Voltage Range: 2.7V to 5.5V
Minimum PCB space required
36-pin WL-CSP package
3 Applications
The AS1119 is ideal for dot matrix displays in mobile phones, per-
sonal electronic and toys.
AS1119
VDD
2.7V to 5.5V
9
SDA
SCL
µP
9
VCP
AS1119
VDD
9
9
VCP
2.2µF
2.2µF
4.7µF
1µF
1µF
1µF
1µF
RSTN
4.7µF
4.7µF



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