AS1113-BQFT austriamicrosystems, AS1113-BQFT Datasheet - Page 8

• Manufacturer Part Number: AS1113-BQFT
• Description: IC DRIVER LED 16-CHAN 28-TQFN
• Manufacturer: austriamicrosystems
• Type: General Purposer

Specifications of AS1113-BQFT

• Constant Current: Yes
• Topology: 16-Bit Shift Register, PWM
• Number Of Outputs: 16
• Internal Driver: Yes
• Type - Primary: General Purpose
• Frequency: 50MHz
• Voltage - Supply: 3 V ~ 5.5 V
• Voltage - Output: 15V
• Mounting Type: Surface Mount
• Package / Case: 28-WQFN
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 50mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Efficiency: -

AS1113
Datasheet - D e t a i l e d D e s c r i p t i o n
8 Detailed Description
The AS1113 is designed to drive up to 16 LEDs through a fast serial interface and 16 constant-current output drivers.
Furthermore, the AS1113 provides diagnostics for detecting open- or shorted-LEDs, as well as over-temperature con-
ditions for LED display systems, especially LED traffic sign applications.
The AS1113 contains an 16-bit shift register and an 16-bit data register, which convert serial input data into parallel out-
put format. At AS1113 output stages, sixteen regulated current sinks are designed to provide uniform and constant cur-
rent with excellent matching between ports for driving LEDs within a wide range of forward voltage variations. External
output current is adjustable from 0.5 to 50mA using an external resistor for flexibility in controlling the brightness inten-
sity of LEDs. The AS1113 guarantees to endure 15V maximum at the outputs.
The serial interface is capable of operating at a minimum of 30 MHz, satisfying the requirements of high-volume data
transmission.
Using a multiplexed input/output technique, the AS1113 adds additional functionality to pins SDO, LD and OEN. These
pins provide highly useful functions (open- and shorted-LED detection, over-temperature detection), thus reducing pin
count. Over-temperature detection will work on-the-run, whereas the open- and shorted-LED detection can be used
on-the-run or in low-current diagnostic mode
Figure 7. AS1113 - Block Diagram
www.austriamicrosystems.com/LED-Driver-ICs/AS1113
REXT
OEN
CLK
+V
SDI
LD
LED
Indicates 16 Bit Path
Generators
16-Bit Data
16-Bit Shift
Register
Register
Current
Detection
Detailed
(see page
Error
Temperature
Detection
Revision 1.04
15).
Error Register
16-Bit Open
Detection &
Control Logic
Error Register
16-Bit Short
Detection &
AS1113
Detection
Global
Error
SDO
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