AN3090

Device description

Doc ID16496 Rev 1

5/19

1

Device description

The STP16DPPS05 device is a monolithic, low voltage, low current power shift register.

It contains a 16-bit serial IN, parallel OUT shift register that feeds a 16-bit D-type storage

register. Sixteen regulated currents are present in the output stage, which is capable of

providing 3-40 mA of constant current to drive the LEDs. Figure 1 shows the application

block diagram of the STP16DPPS05 device.

Figure 1.

STP16DPPS05 block diagram

Two important features of STP16DPPS05 are output status checking to detect LED errors

during driving (error detection), and power saving when the device is not managing data

(auto power safe).