STP24DP05BTR STMicroelectronics, STP24DP05BTR Datasheet - Page 17

• Manufacturer Part Number: STP24DP05BTR
• Description: IC LED DRIVER LINEAR 48-TQFP
• Manufacturer: STMicroelectronics
• Type: Linear (Serial Interface)r

Specifications of STP24DP05BTR

• Constant Current: Yes
• Number Of Outputs: 24
• Internal Driver: Yes
• Type - Primary: General Purpose
• Type - Secondary: RGB
• Frequency: 25MHz
• Voltage - Supply: 3 V ~ 5.5 V
• Voltage - Output: 20V
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP Exposed Pad, 48-eTQFP, 48-HTQFP, 48-VQFP
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 80mA
• Internal Switch(s): Yes
• Low Level Output Current: - 10000 uA (Typ)
• High Level Output Current: 10000 uA (Typ)
• Operating Supply Voltage: 3.3 V to 5 V
• Maximum Supply Current: 40 mA
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Led Driver Application: LED Displays
• Topology: Constant Current
• No. Of Outputs: 24
• Output Current: 80mA
• Output Voltage: 20V
• Input Voltage: 3V To 5.5V
• Operating Temperature Range: -40°C To +125°C
• For Use With: 497-8490 - BOARD EVAL STP24DP05/STM32 BASED
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Efficiency: -
• Topology: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-8283-2

STP24DP05
7.4
Figure 14. SPI sequence to enter in detection mode - time diagram
After these five CLK cycles the device goes into the “error detection mode” and at the 6
rise front of CLK the SDI data are ready for the sampling.
Phase two: “error detection”
The eight data bits must be set “1” in order to set ON all the outputs during the detection.
The data are latched by LE\DM and after that the outputs are ready for the detection
process. When the micro controller switches the OE-R\DM to LOW, the device drives the
LEDs in order to analyze if an OPEN or SHORT condition has occurred.
Figure 15. Detection diagram
The LEDs status will be detected at least in 1 microsecond and after this time the
microcontroller sets OE-R\DM in HIGH state and the output data detection result will go to
the microprocessor via SDO.
Detection mode and normal mode use both the same format data. As soon as all the
detection data bits are available on the serial line, the device may go back to normal mode
of operation.
OE-R\DM
LE\DM
Doc ID 14714 Rev 4
Feature description
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