A5974DTR STMicroelectronics, A5974DTR Datasheet - Page 13

• Manufacturer Part Number: A5974DTR
• Description: IC BUCK ADJ 2.5A 8SOIC
• Manufacturer: STMicroelectronics
• Series: -r
• Type: Step-Down (Buck)r

Specifications of A5974DTR

• Internal Switch(s): -
• Synchronous Rectifier: -
• Number Of Outputs: -
• Voltage - Output: 1.235 V ~ 35 V
• Current - Output: 2.5A
• Frequency - Switching: 250kHz
• Voltage - Input: 4 V ~ 36 V
• Operating Temperature: -
• Mounting Type: *
• Package / Case: *
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-11424-2

STP24DP05
The STP24DP05 is a monolithic, low-voltage, low-current LED driver and 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 an 8 x 3-bit D-type storage register.
In the output stage, 24 regulated current sources provide 5 to 80 mA constant
current to drive the LEDs. The 8 x 3 shift register data flow sequence can be
managed with two dedicated pins.
Users can adjust the output current for each 8-channel group using three external
resistors, controlling in this way the light intensity of the LEDs.
The STP24DP05 guarantees a 20 V output driving capability, allowing users 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 voltage supply is useful for applications that interface any
microcontroller from 3.3 V.
Key features
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Q
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Application example
Controller
STEVAL-ILL015V1
STEVAL-ILL032V1
STEVAL-ILL033V1
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Low-voltage power supply: down to 3 V
3 x 8 constant-current output channels
Adjustable output current through external resistor
Serial data in/parallel data out
3.3 V microcontroller driveable
Output current: 5 to 80 mA
Maximum clock frequency: 25 MHz
ESD protection: 2.5 kV HBM, 200 V MM
OE-RNDM
Sales code
SOUT
OE-G
OE-B
DFO
CLK
DF1
SIN
DM
DG
GF
TF
LE
Vdd Vdd
SDI
BF
TF
CLK
LE
DM
DS
DFO
DF1
OE-RNDM
OE-G
OE-B
REXTR
Board
VLED
R1
R1
STP24DP05
REXTG
IG_0
VLED
G1
High-brightness RGB LED array with LED error detection
Multicolor LED matrix demo based on STP24DP05BTR
Master/slave unit for multicolor LED matrix demo based on STM32F103VET6
G1
REXTB
VLED
B1
GND
SDD
Vdd
B1
Vdd
+
Description
SDI
BF
TF
CLK
LE
DM
DS
DFO
DF1
OE-RNDM
OE-G
OE-B
REXTR
VLED
R1
R1
STP24DP05
REXTG
IG_0
VLED
G1
Key benefits
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Thermal shutdown, output off when
junction temperature exceeds limit
Uniform and accurate current
control in a single-chip solution
Full error detection via SPI
and flag pin
Available and combinable features
such as:
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G1
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high precision
full error detection
auto power saving
REXTB
AN2841: LED dimming implemented on
STM32 microcontroller
UM0574: LED dimmer demonstration
board based on the STP24DP05 and
STM32
UM0588: Multilayer C library for LED
dimming used on systems with SPI and
DMA capabilities
VLED
B1
GND
SDD
Vdd
B1
EF
TF
TQFP48-EP
Technical documents
Vdd
+
Vdd
Vdd
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