STAP16DPPS05 データシートの表示（PDF） - STMicroelectronics

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STAP16DPPS05

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

STMicroelectronics 

STAP16DPPS05

Automotive-grade low voltage 16-bit constant current LED sink

driver with output error detection and auto power-saving

Datasheet - production data

designed for LED panel displays. The device

contains a 16-bit serial-in, parallel-out shift

register that feeds a 16-bit D-type storage

register. In the output stage, sixteen regulated

current sources are designed to provide 3 to

40 mA of constant current to drive the LEDs.

Features

 AECQ100 qualified

 Low voltage power supply down to 3 V

 16 constant current output channels

 Adjustable output current through external

resistor

 Short and open output error detection

 Serial data IN/parallel data OUT

 3.3 V micro driver-able

 Auto power-saving

 Output current: 3 - 40 mA

 Auto power-saving

 Max. clock frequency: 30 MHz

 20 V current generator rated voltage

 Power supply voltage: from 3 V to 5.5 V

 Thermal shutdown for overtemperature

protection

 ESD protection 2.0 KV HBM

Applications

 Dashboard and infotainment backlighting

 Exterior/interior lighting

 DTRLs

Description

The STAP16DPPS05 features the open and

short LED detection on the outputs. The

detection circuit checks 3 different conditions

which may occur on the output line: short to

GND, short to VO or open line. The data detection

results are loaded in the shift register and shifted

out via the serial line output. The detection

functionality is implemented without increasing

the pin number through a secondary function of

the output enable and latch pin (DM1 and DM2

respectively). A dedicated logic sequence allows

the device to enter or leave detection mode.

Through an external resistor, users can adjust

the output current of the STP16DPPS05 thus

controlling the light intensity of the LEDs. In

addition, the user can adjust the intensity of the

brightness of the LED’s from 0 % to 100 %

through the OE/DM2 pin. The auto power

shutdown and auto power-ON feature allows the

device to save power with no external

intervention. The STAP16DPPS05 guarantees a

20 V output driving capability, allowing users to

connect more LEDs in series. The high clock

frequency, 30 MHz also satisfies the system

requirement of high volume data transmission.

The 3.3 V of voltage supply is very useful for

applications interfacing any microcontroller from

3.3 V micro. Compared with a standard TSSOP

package, the TSSOP exposed pad increases the

capability of heat dissipation by a factor of 2.5.

The STAP16DPPS05 is a monolithic, low

voltage, low current power 16-bit shift register

Table 1: Device summary

Order code

Package

Packing

STAP16DPPS05XTTR

TSSOP24 (exposed pad)

2500 parts per reel

November 2017

DocID024306 Rev 7

This is information on a product in full production.

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