t

tOFF

tON

IL2 (t)

IAVE

IL2-PK

'iL

IL2-MIN

LM3444

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SNVS682D – NOVEMBER 2010 – REVISED DECEMBER 2015

Feature Description (continued)

Figure 13. Inductor Current Waveform in CCM

During the off-period denoted by tOFF, the current through L2 continues to flow through the LEDs through D10.

7.3.6 Thermal Shutdown

Thermal shutdown limits total power dissipation by turning off the output switch when the IC junction temperature

exceeds 165°C. After thermal shutdown occurs, the output switch does not turn on until the junction temperature

drops to approximately 145°C.

7.4 Device Functional Modes

This device does not have any additional functional modes.

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