A5974DTR STMicroelectronics, A5974DTR Datasheet - Page 11

• 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

STP16C/D - STP1612PW05
The STP16x series are monolithic, low-voltage, low-current, low-power LED
drivers and 16-bit shift registers designed for LED panel displays. The STP16x
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 provide
from 3 mA to 100 mA constant current to drive the LEDs.
The STP1612PW05 has an individually adjustable PWM brightness control for
each output channel. The PWM counters are selectable via a serial interface
with 4096 or 65536 steps (12 or 16 bits). It also provides enhanced pulse-width
modulation counting algorithms called e-PWM to reduce flickering effects (ghost
visual effects), so improving the overall image quality. The device features 8-bit gain
(256 steps) for global LED brightness adjustment with two selectable ranges.
Key features
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Application example
V o = 0.3 to 1.5 V
STEVAL-ILL003V2
STEVAL-ILL024V1
STEVAL-ILL025V1
STEVAL-ILL028V1
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Supply voltage: 3.3 or 5 V
16 constant-current output channels
Adjustable output current through
external resistor
Serial data in/parallel data out
3.3 V microcontroller driveable
Programmable progressive
output delay
Thermal protection and thermal flag
Maximum clock frequency: 30 MHz
ESD protection:
2.5 kV HBM, 200 V MM
Extended thermal range and
protection with wide package
portfolio
Sales code
Control
unit
PWMCLK
CLK
LE
SDI
OUT0
OUT1
Board
R-EXT
STP1612PW05
OUT2
OUT3
High-brightness LED driver without diagnostics (32 LEDs) based on STP16CP05
Master/slave board for LED display based on STM32 microcontroller
LED matrix display panel based on STP16DP05
RGB LED driver for color displays and backlighting based on the STP1612PW05
and STM32
GND
OUT15
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
Common footprint design
Available and combinable features such as:
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Available and combinable features such as:
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high precision
full error detection via SPI
auto power saving
balanced turn on/off
enhanced PWM for reduced flickering effects (STP1612PW05)
SPI programming with dual-size 16-bit or 256-bit shift register
(STP1612PW05)
8-bit current gain control by means of 256 steps in two selectable ranges
(STP1612PW05)
V DD = 3 to 5 V
SDO
V L
Description
V o = 0.3
to 1.5 V
SDI
OUT0
OUT1
R-EXT
STP1612PW05
OUT2
TSSOP24
AN2141: LED array reference
design board
UM0767: STEVAL-ILL024V1 and
STEVAL-ILL025V1 demonstration boards
based on the STP16DP05 LED matrix
driver and STM32F103VB
UM0882: STEVAL-ILL028V1 LED dimmer
board using STP1612PW05 and STM32
UM0885: Multilayer C library used to drive
STP1612PW05 on the systems with SPI
OUT3
QSOP24
GND
Technical documents
OUT15
(Exposed pad)
TSSOP24
V DD = 3 to 5 V
SO-24
SDO
V L
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