DC1160A Linear Technology, DC1160A Datasheet - Page 2

• Manufacturer Part Number: DC1160A
• Description: BOARD EVAL LED DRIVER LT3518
• Manufacturer: Linear Technology

Specifications of DC1160A

• Current - Output / Channel: 330mA
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 6.5 ~ 40V
• Features: Dimmable, Shutdown
• Voltage - Input: 6.5 ~ 30 V
• Utilized Ic / Part: LT3518
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DEMO MANUAL DC1160
QUICK START PROCEDURE
DC1160 is easy to set up to evaluate the performance of
the LT3518. Follow the procedure below:
Note: Make sure that the PV
40V and that the V
1. Connect a string of LEDs with forward voltage less than
2. With power off, connect a 3.3V input power supply to
3. With power off, connect a 3V to 40V input power supply
4. Connect a 3.3V source to PWM and GND.
2
Figure 1. DC1160A Effi ciency 30V LED String, PV
40V, but greater than the PV
and GND terminals on the PCB as shown.
the V
to PV
not exceed the attached LED string voltage.
IN
IN
and GND terminals on the PCB.
and GND terminals on the PCB. PV
100
90
80
70
60
50
40
30
20
0
IN
input voltage does not exceed 30V.
20
PWM DUTY CYCLE (%)
IN
40
input voltage does not exceed
IN
input voltage, to the LED
60
V
CTRL = V
IN
80
= 12V
DC1160 F01
REF
IN
100
= V
IN
IN
should
= 12V
+
5. Turn PV
6. Turn V
7. For PWM dimming, tie a 100Hz, 3V to 5V PWM waveform
8. For shutdown, tie the SHDN terminal to GND and
rent, the circuit effi ciency, etc. without looking directly
at the LEDs.
to the PWM terminal and GND and observe the PWM
dimming LED current and PWM gate waveforms.
observe the LED current dropping to zero and the V
input current dropping to about 65mA with R4 installed
(V
200mA/DIV
IN
5V/DIV
1A/DIV
/51k).
PWM
I
LED
I
L1
IN
Figure 2. 3000:1 PWM Dimming at 100Hz,
PV
IN
power on and observe the regulated LED cur-
IN
power on.
= 12V, V
LED
= 30V
1μs/DIV
DC1160 F02
dc1160f
IN