VS
Arduino
5V pin
D9
VS
D9_PWM
D2
NXP_BAT46WJ
5V_ARDUINO
D4
NXP_BAT46WJ
GND
C
6
4.
7u
F
2
5V
0
80
5
D10_PWM
C4
470nF 25V 0603
C7
470nF 25V 0603
D10
Arduino
USB
VS≈9V
charge pump
Arduino sch.
5V USB protection circuit
VLED
Arduino sch.
5V from Vin regulator
JVLED
Jumper
D3
VS_REV
5V_REV
5V_arduino
D5
D6
Figure 4
TLD7002-16SHIELD power supply connections with Arduino UNO R3
The TLD7002-16ES output currents can be as high as 76.5 mA per channel, for a total current of 1224 mA in case
all outputs are on @100% duty. The current setting on the TLD7002-16ES outputs must be adjusted in order to
avoid damages to the Arduino UNO circuitry.
In the provided sketch, the LED current has been set to 20 mA for a total LED current of 320 mA.
The board can be powered in several ways:
•
Arduino USB B connector
-
Keep total LED current below 400 mA to avoid damages to Arduino T1 transistor, see
•
Powering the Arduino VIN port with 7 V to keep power on the Arduino LDO (IC2) low
-
Keep total LED current below 400 mA
•
Providing external 5 V to the Arduino 5V_REV test point with an external power supply
-
Keep total LED current below 800 mA to avoid damages to D5 and D3
-
Do not exceed 5.5 V or the the Arduino UNO board will be damaged
•
Powering the Arduino with one power supply (Either at VIN or USB) while VLED is powered by an external
power supply (4 V to 6 V is recommended). Remove JVLED Jumper for this option
-
Total LED current can go up to 1224 mA
TLD7002-16SHIELD
User guide
1 Description
User guide
5
Rev.1.00
2022-07-26
