O2micro OZ9950
OZ9950 is a high efficiency, DC-DC step up converter that allows a series connection of White LEDs resulting in uniform brightness. The step-up converter topology works in a discontinuous mode to allow the use of a small inductor and ease of loop stability that results in a high efficiency and low cost module. The IC provides the user with an overvoltage protection feature.FEATURES
2 PinDESCRIPTION
3 Recommended Operating Range 4ELECTRICAL CHARACTERISTICS
5 FunctionalDESCRIPTION
6 Throughout datasheetDESCRIPTION
Change input voltage range to ‘1.8V to 5.5V’ Update Pin No.3 DIM-ENA description: analog dimming control voltage range to ‘0.8V to 1.4V’ a. Change VCC-Input Voltage b. Fill in Thermal Impedance a. Update General Test Conditions b. Update Input Voltage Range c. Update Internal Reference Voltage d. Update Driver Output Switching Frequency e. Update Disable Threshold & Over-voltage protection Threshold f. Update Analog Dimming Voltage Range Update the voltage range in Functional Information according to the change inELECTRICAL CHARACTERISTICS
Miscellaneous changes Page(s) 1 2 2 3 5 --- REVISION HISTORY Revision No. 0.50 0.60 0.90 0.91DESCRIPTION
of change Initial release 1.FEATURES
: a. Change ‘input voltage range’ from 1.5V-5.5V to 1.6V-5.5V; b. Delete ‘Under-voltage protection’. 2. Ordering Information: a. Change part number to OZ9950MN due to the package change from TSOP to MSOP; b.