STP08DP05TTR(2007) Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

STP08DP05TTR
(Rev.:2007)

Low voltage 8-Bit constant current Led sink with full outputs error detection

STMicroelectronics 

STP08DP05

Detection mode functionality

10.4 Error detection conditions

Note:

Table 12. Detection condition (VDD = 3.3 to 5 V Temperature range 25°C)

Open Line or Output

SW-1 or SW-3b Short to GND

detected

==> IODEC ≤ 0.5 x IO

No error

detected

==> IODEC ≥ 0.5 x IO

SW-2 or SW-3a

Short on LED or Short

to V-LED detected

==> VO ≥ 2.5V

No error

detected

==> VO ≤ 2.2 V

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

IODEC = the detected output current in detection mode.

Figure 19. Detection circuit

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