STP16DP05 datasheet(19/28 Pages) STMICROELECTRONICS

部件名	STP16DP05

功能描述	Low voltage 16-bit constant current LED sink driver with outputs error detection

PDF	28 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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19 / 28 page

STP16DP05

Detection mode functionality

19/28

7.3

Phase three: “resuming to normal mode”

The sequence for re-entering in normal mode is showed in the following Table and diagram:

Note:

For proper device operation the "Entering in detection" sequence must be follow by a

"Resume Mode" sequence, it is not possible to insert consecutive equal sequence.

7.4

Error detection conditions

Note:

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

current in detection mode

Figure 19. Detection circuit

Figure 18. Resuming to normal mode timing diagram

CLK

1°2°3°4°

5°

OE/DM2

HHH

LE/DM1

LLLL

Table 13.

Detection conditions (VDD = 3.3 to 5 V temp. range -40 to 125°C)

SW-1 or

SW-3b

Open line or output

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 ≥ 2.4 V

No error detected

==> VO ≤ 2.2 V

STP16DP05

STP16DP05 数据表(PDF) 19 Page - STMicroelectronics

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