Performance Summary; Quick Start Procedure - Analog Devices DC2630A Manual

DEMO MANUAL DC2630A

PERFORMANCE SUMMARY

PARAMETER
Input Voltage V Range
IN
Switching Frequency (f )
SW
I , I , I , I
LED1 LED2 LED3 LED4
Open LED Voltage V
OUT
Efficiency (100% PWM DC)
V Range
LED
2
I C Minimum PWM Dimming Frequency
V Undervoltage Lockout (UVLO) Falling
IN
V Enable Turn-On (EN) Rising
IN

QUICK START PROCEDURE

Note: Make sure that the voltage applied to V
exceed 50V.
HOW TO OPERATE DC2630A IN NON-I
The DC2630A is easy to set up to evaluate the perfor-
mance of the LT3966 in non-I
for proper measurement equipment setup and follow the
procedure below.
1. With power off, connect a string of up to 16 LEDs
between each channel's LED
Connect the EN/UVLO turret to GND to keep the cir-
cuit shut down. With the power off, connect the input
power supply to the V
2
2. For non-I C mode operation, set both JP1 and JP2
(ADDR1 and ADDR2) to 0. This address is for non-
2
I C mode, and all other settings are for I
communications mode.
3. Adjust the input power supply voltage between 9V
and 18V and enable its output.
4. Release the EN/UVLO-to-GND connection.
5. Observe the LED string running at the programmed
LED current.
2
Specifications are at T
CONDITION
Operating
Transient
R30 = 47.5kΩ, MPHASE = OFF
R3 = R16 = R22 = R26 = 2Ω
R4 = R17 = R23 = R27 = 1MΩ
R5 = R18 = R24 = R28 = 21.5kΩ
V = 12.0V, f = 2MHz, V
IN SW
I = I = I = I
LED1 LED2 LED3 LED4
R4 = R17 = R23 = R27 = 1MΩ
R5 = R18 = R24 = R28 = 21.5kΩ
R30 = 47.5kΩ, SCL[2:0] = 0b111
R2 = 499kΩ, R1 = 84.5kΩ
R2 = 499kΩ, R1 = 84.5kΩ
does not
IN
2
C MODE
2
C mode. Refer to Figure 1
+
and GND turrets.
and GND terminals.
IN
2
C serial
= 25°C
A
MIN
9
= 50V
LED
= 125mA
40
6. To change the brightness with analog dimming in
2
non-I C mode, attach an adjustable voltage source
to the corresponding CTRL/PWM turrets and set
the voltage between 0V and 1.5V. See data sheet
for details.
7. To change brightness with external PWM dimming
2
in non-I C mode, attach a rectangular waveform
with varying duty cycle to the corresponding CTRL/
PWM turrets.
HOW TO OPERATE DC2630A WITH COMMAND LINE
2
INTERFACE – I C SERIAL COMMUNICATIONS MODE
The DC2630A works with a Linduino One microcontroller
board (DC2026C) and can be connected to a PC via USB.
This allows DC2630A to be controlled via serial port inter-
face in Arduino IDE. Refer to the
for detailed instructions on installing and configuring the
necessary software libraries.
1. Launch Arduino IDE.
2. Connect Linduino to computer via USB.
3. Connect a ribbon cable between the J1 serial
communications connection and a Linduino One
demo circuit.
TYP MAX
18
36
2
125
57
86.7%
56
244
8.5
9.7
DC2026C Demo Manual
UNIT
V
V
MHz
mA
V
V
Hz
V
V
Rev. 0