LM3433SQ National Semiconductor, LM3433SQ Datasheet - Page 7

• Manufacturer Part Number: LM3433SQ
• Description: Common Anode Capable High Brightness LED Driver with High Frequency Dimming
• Manufacturer: National Semiconductor

I
Top trace: EN input, 2V/div, DC
Middle trace: V
Bottom trace: I
T = 100µs/div
I
Top trace: DIM input, 2V/div, DC
Bottom trace: I
T = 10µs/div
LED
LED
30kHz PWM Dimming Waveform Showing Inductor Ripple
= 6A nominal, V
= 6A nominal, V
LED
LED
EE
input current, 2A/div, DC
, 2A/div, DC
, 2A/div, DC
IN
IN
= 3.3V, V
= 3.3V, V
V
SENSE
Startup Waveform
(ADJ = 1.0V)
EE
EE
vs. Temperature
Current
= -12V, V
= -12V
LED
= 3V, SS = open
30031567
30031566
30031525
7
I
Top trace: EN input, 2V/div, DC
Middle trace: V
Bottom trace: I
T = 100µs/div
LED
= 6A nominal, V
Average LED Current vs. DIM Duty Cycle
LED
EE
(30kHz dimming, I
input current, 2A/div, DC
, 2A/div, DC
IN
= 3.3V, V
Shutdown Waveform
EE
= -12V, V
LED
LED
= 6A nominal)
= 3V, SS = open
30031568
30031520
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