AS1113-BQFT austriamicrosystems, AS1113-BQFT Datasheet - Page 11

• 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
Figure 12. Switching Global Error Mode Timing Diagram
Error-Detection Mode
Acquisition of the error status occurs at the rising edge of OEN. Error-detection mode is started on the rising edge of
LD when OEN is high. The CLK signal must be low when entering error detection mode. Error detection for open- and
shorted-LEDs can only be performed for LEDs that are switched on during test time. To switch between error-detection
modes clock pulses are needed
Note: To test all LEDs, a test pattern that turns on all LEDs must be input to the AS1113.
Global Error Mode
Global error mode is entered when error-detection mode is started. Clock pulses during this period are used to select
between temperature, open-LED, and shorted-LED tests, as well as low-current diagnostic mode and shutdown mode
(see Table
encountered.
Table 5. Global Error Mode Selections
Note: For a valid result SDI must be 1 for the first device.
www.austriamicrosystems.com/LED-Driver-ICs/AS1113
Pulses
Clock
OEN
SDO
CLK
SDI
0
1
2
3
4
LD
Output Port
Don't Care
Don't Care
Don't Care
5). In global error mode, an error flag (T
Enabled
Enabled
t
SU(ERROR)
t
TESTING
Acquisition of
Error Status
Low-Current Diagnostic
Error-Detection Mode
Shorted-LED Detection
t
Open-LED Detection
GSW(ERROR)
Over-Temperature
Shutdown Mode
(see Table
Detection
Mode
t
P4
5).
Don’t
Care
t
P(I/O)
t
GSW(ERROR)
FLAG,
T
T
O
O
S
S
SDI = 1: Wakeup
SDI = 0: Shutdown
FLAG
FLAG
FLAG
FLAG
FLAG
FLAG
Revision 1.04
T
O
FLAG(IN)
FLAG,
t
= SDO = 1: No over-temperature warning.
= SDO = 0: Over-temperature warning.
= SDO = 1: No shorted-LED error.
= SDO = 0: Shorted-LED error.
SW(ERROR)
= SDO = 1: No open-LED error.
= SDO = 0: Open-LED error.
T
FLAG
S
Global Error Flag/Shutdown Condition
FLAG
) is delivered to pin SDO if any errors are
Don’t
Care
t
P(I/O)
O
FLAG(IN)
O
FLAG
Don’t
Care
t
P(I/O)
t
SW(ERROR)
S
t
GSW(ERROR)
FLAG(IN)
S
FLAG
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