SP4501 Datasheet - Sipex

SP4501 EL Plus Piezo Driver

The SP4501 provides designers with both an electroluminescent lamp driver for backlighting and a piezotransducer driver to generate audio alert tones. The integration of an EL lamp driver and a piezotransducer driver in a single cost-effective IC reduces system cost, board space requirements and com.

® SP4501 EL Plus Piezo Driver s Integrated EL Plus Piezo Driver For Portable Electronic Devices s Reduces System Cost, Size & Component Count s +2.2V to +6.0V Battery Operation s A Single External Coil Drives Both the EL Lamp and Piezotransducer Circuitry s Piezotransducer Can Be Driven By an External Clock or Internal Clock s A Single Resistor Controls the Internal Oscillator s DC-to-AC Inverter Produces Up To 200VP-P to Drive EL Lamps s DC-to-AC Inverter Produces Waveform to Drive Piezotransd.

SP4501 Features

* a low power standby mode which draws less than 1µA (typical). The frequency of the internal oscillator is set with a single external resistor. The piezotranducer driver can be driven with the internally generated clock signal or an external clock signal provided by the designer. A single inductor is

SP4501_SipexCorporation.pdf