L6382D データシートの表示（PDF） - STMicroelectronics

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L6382D

Power management unit for LED drivers

STMicroelectronics 

Application information

L6382D

6.2.3

Shutdown

This state permits to manage the fault conditions in operating mode and it is entered by the

occurrence on one of the following conditions:

1. Vcc < VccOff (undervoltage fault on supply)

2. VREF < 2.0 V (undervoltage fault on VREF)

In this state the functions are:

– The HVSU generator is ON

– VREF is enabled in low source current mode (IREF < 10 mA)

– TPR is disabled

– OCP is disabled

– the drivers are disabled

In this state if Vcc reaches VccOn, the device enters the save mode otherwise, if

Vcc < VREF(OFF), also the C is turned off and the device will be ready to execute the startup

sequence.

Figure 11. Timing sequences: TPR behavior

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DocID10972 Rev 8

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