MAX4990ETD+T

MAX4990ETD+T high-voltage, ±15KV ESD-protected electroluminescent lamp driver. This high-voltage DC-AC converter ideal for driving electroluminescent (EL) lamps. It 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 device generate up to 250V peak-to-peak output voltage for maximum lamp brightness. It utilizes an inductor-based boost converter to generate high voltage necessary to drive an EL lamp. Boost-converter switching frequency is set with combination of an external capacitor connected from SW to GND and an external resistor connected from SLEW to GND. It uses a high-voltage full-bridge output stage to convert high voltage generated by boost converter to AC waveform suitable for driving EL panel. Applications include keypad backlighting, MP3 players, LCD backlighting, PDAs/smartphones, automotive instrument, clusters.

• ESD protected EL lamp outputs
• ±15KV human body model, ±4KV IEC 61000-4-2 contact discharge, ±15KV IEC 61000-4-2 air-gap discharge
• 250VP-P (max) output for highest brightness
• Wide +2.4V to +5.5V input voltage range
• Resistor adjustable slew-rate control for audible noise reduction
• Externally driven lamp and switching converter frequencies
• Capacitor-adjustable lamp and switching converter frequency
• Low 100nA shutdown current, capacitor adjustable for slow turn-on/-off
• DIM input for controlling output voltage through DC analogue voltage, PWM, or resistor to GND
• 14 TDFN-EP package, ±15KV protection, DIM and slew rate control

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Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

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