AS1109-BSSU austriamicrosystems, AS1109-BSSU Datasheet - Page 3

• Manufacturer Part Number: AS1109-BSSU
• Description: IC LED 4-BIT CC DRIVER 16-SSOP
• Manufacturer: austriamicrosystems
• Type: General Purposer

Specifications of AS1109-BSSU

• Constant Current: *
• Constant Voltage: *
• Topology: *
• Number Of Outputs: *
• Internal Driver: *
• Type - Primary: *
• Type - Secondary: *
• Frequency: *
• Voltage - Supply: *
• Voltage - Output: *
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Operating Temperature: *
• Current - Output / Channel: *
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Efficiency: -

AS1109
Datasheet - P i n o u t
4 Pinout
Pin Assignments
Figure 2. Pin Assignments (Top View)
Pin Descriptions
Table 1. Pin Descriptions
www.austriamicrosystems.com/LED-Driver-ICs/AS1109
16-pin QSOP-150
16-pin SOIC-150
5:12
13
14
15
16
1
2
3
4
Pin Number
OUTN0
OUTN1
OUTN2
OUTN3
GND
CLK
SDI
LD
16-pin QFN
(4x4mm)
3:10
1
2
3
4
5
6
7
8
15
16
11
12
13
14
1
2
16-pin QSOP-150
16-pin SOIC-150
AS1109
Pin Name
OUTN0:7
REXT
GND
OEN
SDO
CLK
V
SDI
LD
DD
16 VDD
15 REXT
14 SDO
13 OEN
12 OUTN7
10 OUTN5
11 OUTN6
9 OUTN4
Ground
Serial Data Input
Serial Data Clock. The rising edge of the CLK signal is used to clock data into and at
the falling edge out of the AS1109 shift register. In error mode, the rising edge of the CLK
signal is used to switch error modes.
Serial Data Load. Data is transferred to the data register at the rising edge of this pin.
Output Current Drivers. These pins are used as LED drivers or for input sense for
diagnostic modes.
Output Enable. The active-low pin OEN signal can always enable output drivers to sink
current independent of the AS1109 mode.
0 = Output drivers are enabled.
1 = Output drivers are disabled.
Serial Data Output. In normal mode SDO is clocked out 8.5 clock cycles after SDI is
clocked in.
In global error detection mode this pin indicates the occurrence of a global error.
0 = Global error mode returned an error.
1 = No errors.
External Resistor Connection. This pin connects through the external resistor (R
to GND, to setup the load current.
Positive Supply Voltage
Revision 1.20
OUTN0 3
OUTN1 4
CLK 1
LD 2
SDI
16
5
16-pin QFN
GND VDD REXT
AS1109
Description
15
(4x4mm)
6
14
7
13
8
12
11
10
9
SDO
OEN
OUTN7
OUTN6
EXT
3 - 26
)