Quick Start Procedure - Linear Technology DC1930A Demo Manual

DEMO MANUAL DC1930A
DESCRIPTION
LED CURRENT
5A/DIV
SW VOLTAGE
5V/DIV
Figure 1: DC1930A Current Rise Time: V

QUICK START PROCEDURE

Demonstration circuit 1930A is easy to set up to evalu-
ate the performance of the LT3744. Refer to Figure 2 for
proper measurement equipment setup and follow the
procedure below:
1. With power off, connect the input power supply to PV
and GND. Note: make sure PV
2
= 12V, LED Voltage = 4.2V when ON. Total LED Current = 12A
IN
IN
is below 30V.
IN
2. With power off, connect the LED load to V
– –
proper LED1 , LED2 , LED3
of the PWM pins.
3. Turn on the power at the input.
4. Carefully evaluate other design parameters as needed.
DC1930A F01
+
and
LED
–
according to the setting
dc1930af