A5974DTR STMicroelectronics, A5974DTR Datasheet - Page 14

• 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

Boost converters
PM6600
The PM6600 consists of a high-efficiency monolithic boost converter and six
controlled current generators (rows), specifically designed to supply LED arrays
used in mobile PC LCD-panel backlighting. The device can manage a nominal
output voltage up to 36 V (i.e. 10 white LEDs per row). The generators can be
externally programmed to sink up to 32 mA and they can be dimmed via a PWM
signal (1% dimming duty cycle at 20 kHz can be managed). 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
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Application example
14
STEVAL-ISA056V1
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6 rows with up to 10 LEDs per row (60 LEDs)
Monolithic solution up to 36 V output voltage
Up to 1 MHz F
Programmable LED current up to 32 mA at highest precision/matching accuracy
Supports analog and digital dimming
Sales code
SW
and high efficiency at light load
Board
3.3 V/4.5 V up to 28 V
V IN
6-row, 30 mA LED driver with boost converter for notebook PC LCD-panel backlighting
FAULT
MODE
EN
management
DIM
Fault
LDO
control
Boost
RILIM
control
Row
Description
Key benefits
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up to 36 V
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Supports wide range of screen sizes
from small netbooks to wide-screen
notebooks with one device
High integration, so few and small
(cheap) external components
Outstanding efficiency for longer
battery life and energy saving
V OUT
VFQFPN-24