MBI6650 Datasheet, PDF (1/15 Pages) List of Unclassifed Manufacturers – 1.2A DC/DC Converter

Macroblock
Preliminary Datasheet
Features
z 1.2A Constant Output Current
z 93% Efficiency @ input voltage 13V, 350mA, 3-LED
z 9~36V Input Voltage Range
z Hysteretic PFM Improves Efficiency at Light Loads
z Settable Output Current
z Integrated Power Switch
z Full Protection: Thermal/UVLO/Soft Start/LED Open-/Short- Circuit
z Only 4 External Components Required
MBI6650
1.2A DC/DC Converter
Surface Mount Device
PSD: TO-252-5L
Product Description
The MBI6650 is a high efficiency, constant current, step-down DC/DC converter, designed to deliver constant
current to high power LED with only 4 external components. The MBI6650 is specifically designed with hysteretic
PFM control scheme to enhance the efficiency up to 93%. Output current of the MBI6650 can be programmed by
an external resistor, and LED dimming can be controlled via pulse width modulation (PWM) through DIM pin. In
addition, the embedded soft start function eliminates the inrush current while the power is on. The MBI6650 also
features under voltage lock out (UVLO), over temperature protection, LED open-circuit protection and LED
short-circuit protection to protect IC from being damaged.
Additionally, to ensure the system reliability, the MBI6650 is built with the thermal protection (TP) function and a
thermal pad. The TP function protects IC from over temperature (140°C). Also, the thermal pad enhances the
power dissipation. As a result, a large amount of current can be handled safely in one package.
Applications
z Signage and Decorative LED Lighting
z Automotive LED Lighting
z High Power LED Lighting
z Constant Current Source
Macroblock, Inc. 2007
Floor 6-4, No.18, Pu-Ting Rd., Hsinchu, Taiwan 30077, ROC.
TEL: [phone], FAX: [phone] E-mail: [e-mail]
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October 2007, V1.00