SMD REGU PT4115EE89E 30V 1.2A SOT-89-5

PT4115 (PT4115B89E-B:B type)
30V, 1.2A Step-down High Brightness LED Driver

GENERAL DESCRIPTION
The PT4115E is a continuous conduction mode
inductive step-down converter, designed for driving
single or multiple series connected LED efficiently
from a voltage source higher than the total LED chain
voltage. The device operates from an input supply
between 6V and 50V and provides an externally
adjustable output current of up to 1.5A.
The PT4115E includes the power switch and a
high-side output current sensing circuit, which uses an
external resistor to set the nominal average output
current, and a dedicated DIM input accepts either a DC
voltage or a wide range of pulsed dimming. Applying a
voltage of 0.3V or lower to the DIM pin turns the
output off and switches the device into a low current
standby state.
The PT4115E is available in SOT89-5 package.


FEATURES
? Simple low parts count
? Wide input voltage range: 6V to 50V
? High efficiency (up to 97%)
? Up to 1.5A output current
? Single pin on/off and brightness control using DC
voltage or PWM
? Up to 1MHz switching frequency
? Typical 3% output current accuracy
? Inherent open-circuit LED protection
? Inherent Rcs open protection
? High-Side Current Sense
? Hysteretic Control: No need compensation
? Adjustable Constant LED Current
? Thermal shutdown
APPLICATIONS
? Low voltage halogen replacement LEDs
? Automotive lighting
? Low voltage industrial lighting
? LED back-up lighting
? Illuminated signs
? SELV lighting
? LCD TV backlighting