A5974DTR STMicroelectronics, A5974DTR Datasheet - Page 15

• 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

+5 V
LED7706/7
The LED7706/7 consists of a high-efficiency monolithic boost converter and six
controlled-current generators (rows) specifically designed to supply LED arrays
used in the backlighting of LCD panels. The device can manage an output voltage
up to 36 V (i.e. 10 white LEDs per row).
The generators can be externally programmed to sink up to 85 mA (LED7707)
and can be dimmed via a PWM signal. The device detects and manages open
and shorted LED faults and leaves unused rows floating. Basic protection (output
overvoltage, internal MOSFET overcurrent and thermal shutdown) is provided.
Key features
Boost section
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Application example
STEVAL-ILL020V1
STEVAL-ILL021V1
V IN
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Input voltage range: 4.5 to 36 V
Internal power MOSFET
Up to 93% efficiency
Up to 36 V output voltage
Switching frequency:
200 kHz to 1 MHz
Programmable soft-start,
OVP and OCP
External sync for multi-device
applications
Sales code
Dimming
Internal MOSFET OCP
Row current selection
Enable
Fault
Board
LDOS
BILIM
RILIM
SS
COMP
SGND
DIM
AVCC
FAULT
LCD panel backlight demoboard based on LED7706
(6-row, 30 mA LED driver with boost converter)
LCD panel backlight demoboard based on LED7707
(6-row, 85 mA LED driver with boost converter)
VIN
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EN
Backlight driver section
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Six rows capable of driving multiple
LEDs in series
Up to 85 mA (LED7707) and 30 mA
(LED7706) programmable
output-current per row
Rows in parallel to drive
up to 510 mA LEDs (LED7707)
±1.5% current matching
between rows
Shorted and open LED fault
detection
PWM dimming (500 ns minimum
dimming on-time LED7706)
LED7707
SYNC
SLOPE
MODE
Slope compensation
OVSEL
Description
Fault management selection
Sync output
PGND
SWF
Switching frequency selection
ROW1
ROW2
ROW3
ROW4
ROW5
ROW6
OVP selection
Key benefits
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Monolithic and flexible solution
High efficiency
Superior dimming capability
Complete and flexible fault
management
AN2809: 6-row, 30 mA LED driver with
boost converter for the backlight of LCD
panels
AN2810: 6-row 85 mA LED driver
with boost converter for LCD panel
backlighting
Up to 10 WLEDs per row
VFQFPN-24 4x4
Technical documents
MLCC
V OUT
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