MBI1804 Datasheet, PDF (1/10 Pages) List of Unclassifed Manufacturers – ALL-WAYS-ON HIGH-POWER LED DRIVER

Macroblock
Preliminary Datasheet
MBI1804
All-Ways-On^TM High-Power LED Driver
Features
l 4 constant-current output channels
l Constant output current invariant to load voltage change
l Maximum output constant current: 360 mA
l Excellent output current accuracy:
between channels: <±3% (max.), and
between ICs: <±6% (max.)
l Output current adjusted through an external resistor
l Fast response of output current, _OE (min.): 10μs
l Schmitt trigger input
l 5V supply voltage
l Package type: SOP8 with thermal pad
CD: SOP8-150-1.27
Current Accuracy
Between Channels
Between ICs
< ±3%
< ±6%
Conditions
I_OUT = 40 ~ 240 mA
Product Description
MBI1804 is an instant On/Off LED driver for high power LED applications and exploits PrecisionDrive™ and
All-Ways-On™ technology to enhance its output characteristics. At MBI1804 output stage, four regulated current
ports are designed to provide uniform and constant current sinks for driving LEDs within a large range of V_F
variations.
With All-Ways-On™, MBI1804 provides users easily a consistent current source in their system design. Users may
adjust the output current from 20 mA up to 360 mA through an external resistor, R_ext, which gives users flexibility in
controlling the light intensity of LEDs. In addition, users can precisely adjust LED brightness from 0% to 100% via
output control with Pulse Width Modulation. MBI1804 also guarantees LED can be cascaded to maximum 17V at
the output ports.
Additionally, to ensure the system reliability, MBI1804 is provided in the SOP8 with thermal pad for dramatically
increased power dissipation capability. As a result, a large amount of current can be handled safely in one
package.
©Macroblock, Inc. 2004
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November 2004, V1.00