A5974DTR STMicroelectronics, A5974DTR Datasheet - Page 5

• 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

LEDs are essentially PN junction semiconductor diodes that emit a monochromatic (single color) light when operated in a
forward biased direction. The basic structure of a LED consists of the die or light emitting semiconductor material, a lead frame
where the die is actually placed, and the encapsulation epoxy which surrounds and protects the die. The first commercially
usable LEDs were developed in the 1960’s, but they have only recently reached significant levels of luminous efficiency.
LEDs offer longer lifetimes (up
to 100,000 hours), a wide color
spectrum, small size and greater
design flexibility. Moreover, LEDs
increase safety through their low-
voltage power supplies, and enhance
user comfort as they turn on instantly
and operate silently. LEDs are
environment friendly because they
200
150
100
50
0
1920
Incandescents
Fluorescent
Electrical discharge lamps
1940
have no gas inside, no UV and little
infrared emission.
Most importantly, LEDs can save a
lot of energy compared with standard
lighting sources. It has been estimated
that the replacement of 5% of all
incandescent bulbs in the world (12.5
billion/year) with LED-based lighting
would allow the saving of 60 TWh of
Tungsten-halogen
Conventional incandescent
1960
Evolution of lighting
Year
Shaped reflectors
1980
Metal halide
Mercury vapor
High-pressure
Sodium
electricity equivalent to 23.4 Gtonne of
CO
STMicroelectronics offers a large
portfolio of compact and efficient LED
driver solutions, fully addressing the
lighting market and featuring all the
functions needed to ensure greater
power saving.
Best LED
2000
2
a year.
White LEDs
Light emitting diodes
2020
5