SP2115 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 vol
DESCRIPTION
SP2115 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 7V and 60V and provides an externally adjustable output current
of up to 1.2A. Depending upon the supply voltage and external
components, SP2115can provide more than 30 watts of
output power.
SP2115 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. SP2115 is available in SOP-8 with power pad
packages and SOT89-5.
FEATURES
>95% efficiency
7V to 60V DC input range
Constant current LED driver
Up to 1.2A output current
Linear and PWM dimming capability
1MHz switching frequency
Internal thermal overload protection
Over temperature protection
Open/short circuit LED protection
Low components count
SOP8 with power pad and SOT89-5
APPLICATIONS
DC/DC LED driver applications
Backlighting for flat panel displays
General purpose constant current source
Automotive lighting
LED lighting

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