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 analog voltage, PWM, or resistor to GND
• 14 TDFN-EP package, ±15KV protection, DIM and slew rate control

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party