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Macroblock Inc.
Floor 6-4, No. 18, Pu-Ting Rd.,
Hsinchu

300
Taiwan
TEL:+886-3-5790068
FAX:+886-3-5797534
URL:
http://www.mblock.com.tw
Microsites Homepage:
http://Macroblock.allitwares.c
om/

Featured Products

Step-Down 1A Dimmable LED Driver MBI6653

　Step-Down 1A Dimmable LED Driver

Brief：
MBI6653 is a step-down constant-current high-brightness LED driver to provide a cost-effective design solution for interior/exterior illumination applications. It is designed to deliver constant current to light up high power LED with only 4 external components. With hysteretic PFM control scheme, MBI6653 eliminates external compensation design and makes the design simple.

1A LED Driver IC MBI6661

　1A LED Driver IC

Brief：
MBI6661 is a high efficiency, constant current and step-down DC/DC converter. It is designed to deliver constant current to light up high power LED with only 5 external components. By hysteretic PFM control scheme, MBI6661 omits the external compensation design.
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LED Driver ICs (8)
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Macroblock Inc.

 Business Type: Manufacturer → Manufacturing Equipment
1 Categories , 8 Products Listing.
Home > LED Driver ICs
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Product Name: LED Driver IC with under voltage lock out

Product Number: MBI6651
Brief Description:
The MBI6651 is a high efficiency, constant current and step-down DC/DC converter. It is designed to deliver constant current to light up high power LED with only 4 external components. With hysteretic PFM control scheme, MBI6651 improves the efficiency of light loading. The output current of MBI6651 can be programmed by an external resistor and LED dimming can be controlled via pulse width modulation (PWM) through DIM pin. In addition, the start-up function limits the inrush current while the power is switch on. The MBI6651 also features under voltage lock out (UVLO), over temperature protection, LED open -circuited protection and LED short -circuited protection to protect IC from being damaged. Additionally, to ensure the system reliability, the MBI6651 builds thermal protection (TP) function inside. This function protects IC from overheating (165°C) in various application conditions. MBI6651 provides thermal enhanced packages as well to handle power dissipation more efficiently. MBI6651 is available in TO-252, SOT23-6 and MSOP-8 packages.

Official Site

  • Key Features:

    Backward compatible with MBI6650 in package

    1A constant output current

    96% efficiency @ input voltage 12V, 350mA, 3-LED

    9~36V input voltage range

    Hysteretic PFM improves efficiency at light loading

    Hysteretic PFM improves efficiency at light loading

    Settable output current

    Integrated power switch with 0.45ohm low Rds(on)

    Full protection: Thermal/UVLO/Start-Up/LED Open-/Short- Circuit

    Only 4 external components required

     

  • Key Applications:

    Signage and Decorative LED Lighting

    Automotive LED Lighting

    High Power LED Lighting

    Constant Current Source

Official Site

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LED Driver ICs | LED Driver IC with under voltage lock out | Macroblock Inc.