MAX4990ETD+T Analog Devices

MAX4990 RELIABILITY REPORT FOR MAX4990ETD+ PLASTIC ENCAPSULATED DEVICES Updated: August 16, 2016 MAXIM INTEGRATED PRODUCTS 160 Rio Robles San Jose, CA 95134 Approved by Sokhom Chum Quality Assurance Reliability Engineer Maxim Integrated Products. All rights reserved. Page 1/5 MAX4990 Conclusion The MAX4990ETD+ successfully meets the quality and reliability standards required of all Maxim products. In addition, Maxim s continuous reliability monitoring program ensures that all outgoing product will continue to meet Maxim s quality and reliability standards. Table of Contents I.......Device Description IV......Die Information II.......Manufacturing Information V.......Quality Assurance Information III......Packaging Information VI......Reliability Evaluation .....Attachments I. Device Description A. General The MAX4990 high-voltage DC-AC converter is ideal for driving electroluminescent (EL) lamps. The MAX4990 features a wide +2.4V to +5.5V input range that allows the device to accept a wide variety of voltage sources such as single-cell lithium-ion (Li+) batteries and higher voltage battery chargers. The lamp outputs of the device generate up to 250V peak-to-peak output voltage for maximum lamp brightness. The MAX4990 utilizes an inductor-based boost converter to generate the high voltage necessary to drive an EL lamp. The boost-converter switching frequency is set with the combination of an external capacitor connected from SW to GND and an external resistor connected from SLEW to GND. The MAX4990 uses a high-voltage full-bridge output stage to convert the high voltage generated by the boost converter to an AC waveform suitable for driving the EL panel. The EL output switching frequency is set with the combination of an external capacitor connected from EL to GND and an external resistor connected from SLEW to GND. The MAX4990 uses a proprietary acoustic noise-reduction circuit that controls the slew rate of the AC voltage, reducing audible noise from the EL panel. The slew rate is set with an external resistor connected from SLEW to GND. The MAX4990 features an EL lamp dimming control (DIM) that allows the user to set the EL output voltage with a PWM signal, a DC analog voltage, or a resistor connected from the DIM input to GND. A capacitor placed in parallel to the resistor on DIM allows the user to program a slow turn-on/-off time that generates a soft fade on/fade-off effect of the EL lamp. The MAX4990 enters a low-power shutdown mode (100nA max) when the EN and DIM inputs are connected to GND. The MAX4990 also enters thermal shutdown if the die temperature rises above +158C. The MAX4990 is available in a space-saving, 14-pin, 3mm x 3mm TDFN package and is specified over the extended -40C to +85C operating temperature range. Maxim Integrated Products. All rights reserved. Page 2/5