STP24DP05 24-bit constant current LED sink driver with output error detection

The STP24DP05 is a monolithic, low-voltage, low current power 24-bit shift register designed for LED panel displays. The device contains an 8 x 3-bit serial-IN, parallel-OUT shift register that feeds a 8 x 3-bit D-type storage register. In the output stage, twenty four regulated current sources were designed to provide 5-80 mA constant current to drive the LEDs.

The 8 x 3 shift register data flow sequence order can be managed through two dedicated pins.

The STP24DP05 has a dedicated pin to activate the outputs with a sequential delay, that prevents inrush current during output turn-ON.

The device detection circuit checks 3 different conditions that can occur on the output line: short to GND, short to VO, or open line.

The data detection results are loaded in the shift registers and shifted out via the serial line output.

The detection functionality is activated with a dedicated pin or alternatively, through a logic sequence that allows the user to enter or exit detection mode.

Through three external resistors, the user can adjust the output current for each 8-channel group, therefore controlling the light intensity of LEDs.

The STP24DP05 guarantees a 20 V output driving capability, allowing the user to connect more LEDs in series.

The high clock frequency, 25 MHz, makes the device suitable for high data rate transmission.

The 3.3 V of voltage supply is useful for applications that interface any microcontroller from 3.3 V

技术特性

Low-voltage power supply down to 3 V
8 x 3 constant current output channels
Adjustable output current through external resistors
Short and open output error detection
Serial data IN/parallel data OUT
Shift register data flow register control
Accepts 3.3 V and 5 V micro driver
Output current: 5-80 mA
25 MHz clock frequency
High thermal efficiency package

功能框图

STP24DP05 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
STP24DP05BTR	Active		1000	TQFP 48 7x7x1.0	Tape And Reel		STP24DP05BTR

DATASHEET

描述	版本	大小
STP24DP05 : 24-bit constant current LED sink driver with output error detection	2	1099KB

APPLICATION NOTES

描述	版本	大小
AN2841: LED dimming implemented on STM32™ microcontroller	1	783KB
AN3981: LED array drivers	1	3554KB

USER MANUALS

描述	版本	大小
UM0574: STEVAL-ILL015V1 - LED dimmer demonstration board based on the STP24DP05 and STM32™	1	662KB
UM0588: Multilayer C library for LED dimming used on systems with SPI and DMA capabilities	1	224KB

PRODUCT PRESENTATIONS

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