(2 PCS) MP1048EM-LF MPS FULL BRIDGE CCFL CONTROLLER
Tax included.
THIS LISTING IS FOR (2 PCS) OF MP1048EM-LF BY MPS
FULL BRIDGE CCFL CONTROLLER
FULL BRIDGE CCFL CONTROLLER
DESCRIPTION
The MP1048 is a fixed operating frequency
inverter controller that controls four external
N-Channel power MOSFETs in a full-bridge
configuration. The inverter is designed to power
up to 6 cold cathode fluorescent lamps (CCFLs)
to backlight liquid crystal displays. Its full-bridge
architecture converts unregulated DC input
voltages to the nearly pure sine waves required
to ignite and operate CCFLs.
For reliable lamp ignition, the operating
frequency is set by an external resistor and
during startup is temporarily swept toward the
unloaded resonant frequency of the tank. Burst
mode or analog mode dimming are controlled
with an external analog signal. Built-in fault
management features include an open lamp
regulator, a transformer secondary peak current
regulator and a dual-mode fault timer. The
secondary over-current timeout can be
shortened with external components. The
MP1048 is available in TSSOP28 and SOIC28
packages.
FEATURES
Capable of Driving up to 6 Lamps
Controls Four External, Low Cost, N-Channel
MOSFETs
Fixed Operating Frequency
Input Voltage Range of 10V to 22V
Lamp Current and Voltage Regulation
Full-Wave Sense Amp
Analog and Burst Mode Dimming Control
Integrated Burst Mode Os
cillator and Modulator
Soft-On and Soft-Off Burst Envelope
Open Lamp Protection
Secondary Over-Current Protection
Dual-Mode Fault Timer
Available in TSSOP28 and SOIC28 Packages
APPLICATIONS
Desktop LCD Flat Panel Displays
Monitor
