STAP16DPPS05XTTR 查看數據表（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

7.5

Auto power-saving

Error detection mode functionality

The auto power-saving feature minimizes the quiescent current if no active data is detected

on the latches and auto powers-up the device as the first active data is latched.

Figure 23: Auto power-saving feature

Conditions:

 Temp. = 25 °C, VDD = 3.3 V, Vin = VDD, VLed = 3.0 V, Iset = 20 mA

 Ch1 (yellow) = CLK, Ch2 (blue) = SDI, Ch3 (purple) = LE/DM1, Ch4 (green) = IDD

Idd consumption:

 Idd (normal operation) = 2.93 mA

 Idd (shutdown condition) = 170 µA

Figure 24: Auto power-saving feature: first output TON

Conditions:

 Temp. = 25 °C, VDD = 3.3 V, Vin = VDD, VLed = 3.0 V, Iset = 20 mA

 Ch1 (yellow) = CLK, Ch2 (blue) = SDI, Ch3 (purple) = LE/DM1, Ch4 (green) = IDD

When the device goes from auto power-saving to normal operating condition, the

first output switching ON shows the TON condition as seen in the plot above.

DocID024306 Rev 7

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