STAP16DPPS05XTTR 데이터 시트보기 (PDF) - STMicroelectronics

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STAP16DPPS05XTTR

Automotive-grade low voltage 16-bit constant current LED sink driver with output error detection and auto power-saving

STMicroelectronics 

STAP16DPPS05

Error detection mode functionality

7.3

Phase three: resuming normal mode

The sequence for re-entering normal mode is shown in the following table:

Table 14: Resuming normal mode - timing diagram

CLK

1°

2°

3°

4°

5°

OE/DM2

H

L

H

H

H

LE/DM1

L

L

L

L

L

7.4

For proper device operation, the “entering error detection” sequence must be

followed by a “resume mode” sequence, it is not possible to insert consecutive

equal sequences.

Error detection conditions

Table 15: Detection conditions (VDD = 3.3 to 5 V, temperature range -40 to 125 °C)

Configuration

Detect mode

Detection results

SW-1 or

SW-3b

SW-2 or

SW-3a

Open line or output short to

GND detected

==> IODEC ≤ 0.5 x IO

Short on LED or short to V-

LED detected

==> VO ≥ 2.6 V

No error

detected

==> IODEC ≥ 0.5 x IO

No error

detected

==> VO ≤ 2.3 V

Where: IO = the output current programmed by the REXT, IODEC = the detected

output current in detection mode.

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