Eval Kit Manual
DN[Document ID]
AS1111C
Standard Board
AS1111C-DF_EK_ST
ams Eval Kit Manual
[v1-00] 2015-Jan-20
Page 1
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AS1111C Standard Board
Content Guide
1
2
3
4
5
5.1
5.2
5.3
6
7
8
Introduction .......................................................................................................................... 3
Kit Content ........................................................................................................................... 3
Getting Started ..................................................................................................................... 3
Hardware Description........................................................................................................... 4
Schematics, Layers and BOM ............................................................................................. 6
Schematic of AS1111C Evaluation Board ........................................................................... 6
Layers .................................................................................................................................. 7
Bill of Materials ..................................................................................................................... 8
Ordering & Contact Information ........................................................................................... 9
Copyrights & Disclaimer ..................................................................................................... 10
Revision Information .......................................................................................................... 10
ams Eval Kit Manual
[v1-00] 2015-Jan-20
Page 2
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AS1111C Standard Board
1
Introduction
This document describes the AS1111C Evaluation Kit.
The AS1111C is a LED driver designed to match current source bias for any color LED, including
white and blue. The device can drive up to 4 high-current LEDs, and the LED current is
programmable using an external resistor (RSET).
The AS1111C LED currents are 230 x ISET (per LED, type) at an LED cathode voltage (VSAT) of
150mV and 325 x ISET (type) at a VSAT of 1V, where ISET is the current through RSET connected
to pin CTRL.
The AS1111C incorporate a chip-enable feature via pin EN. When the devices are disabled, the
supply current drops down to less than 1µA. The AS1111C is available in a 8lead MLPD package
with 0.5mm pitch.
2
Kit Content
Figure 1: Kit Content
1
Label
1
Item
Evaluation Board
Comment
AS1111C (8lead MLPD 2x2mm package
with 0.5mm pitch)
3
Getting Started
Connect your supply to GND, VSET and VLED. Be shure that the jumpers are set like you can see
in the Hardware Description below.
ams Eval Kit Manual
[v1-00] 2015-Jan-20
Page 3
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AS1111C Standard Board
4
Hardware Description
Figure 2: Evaluation Board Overview
A
B
C
D
E
Label
A
B
C
D
E
Name
AS1111C
LED´s
VSET
GND
VLED
Designator
U1
D1, D2, D3,
D4
VSET
GND
VLED
Description
LED – driver
Info
Voltage
Ground
LED Supply
Voltage to set the LED
Current
Supply Voltage for the
LED´s
Figure 3: Jumper and device locations
A
B
C
D
E
ams Eval Kit Manual
[v1-00] 2015-Jan-20
Page 4
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AS1111C Standard Board
Label
A
Name
J_EN
Designator
J_EN
Description
Enable or
Disable the LED
– driver
Info
GND - disabled
VSET - enabled
B
RSET
J_Rset
Connect different kind of
RSET or you can make a
parallel connection.
Depending on Jumper
J_CTRL.
Connect /
Disconnect the
soldered (51k)
REST resistor.
Connect VLED
to CTRL
CTRL to Vset
C
J_CTRL
J_CTRL
CTRL to VLED
D
E
LED´s
J1
J_D1, J_D2;
J_D3, J_D4
J1
Female Header
Jumper
Connect different kind of
LED´s
Connect / Disconnect LED´s
Figure 4: Measurement Points
A
C
D
E
B
Label
A
Name
Enable
Designator
EN
Description
V
EN
2.2V: VOUT is enabled
V
EN
0.5V: VOUT is disabled
Info
B
C
D
E
GND
VSET
GND
LED Voltage
GND
VSET
GND
VLED
Ground
Voltage to set the LED current
Ground
Supply Voltage for the LED´s
Measurement Point
Measurement Point
Measurement Point
Measurement Point
ams Eval Kit Manual
[v1-00] 2015-Jan-20
Page 5
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