Dual EL lamp drivers cover a big area

Edited by the Electronicstalk editorial team Aug 15, 2005

The HV841 and the HV839 are high voltage driver ICs designed to drive two electroluminescent (EL) lamps with a combined area of up to 3.5in2.

New from Supertex, the HV841 and the HV839 are high voltage driver ICs designed to drive two electroluminescent (EL) lamps with a combined area of up to 3.5in2.

They deliver low noise, highly efficient backlighting solutions for dual LCD and keypad applications such as mobile phones and other portable devices.

The HV841 accepts a wide input voltage range (2.0 to 5.8V) and produces a nominal regulated output voltage of 100V to assure consistent brightness for cellular phones and other lithium-ion and alkaline battery applications.

It also features a very low shutdown current mode to minimise battery current in standby mode, thereby prolonging battery life.

Designs utilising the HV841 require few external components, which not only reduces board space, but also lowers production costs for the end product.

Additionally, Supertex has announced new packaging options for the HV839, a dual EL lamp driver with a nominal regulated output voltage of 90V.

The IC is now available in lead-free, RoHS compliant, MLP and MSOP packages.

"Supertex continues to lead in the development of EL driver ICs", states Ahmed Masood, Director of Marketing for Supertex.

"The wide voltage range of both of these products allows them to accept TTL and CMOS inputs, enabling simpler, more cost-efficient designs".

The HV841 is available in 10-pin MSOP (HV841MG-G) and 10-pin MLP (HV841K6-G) packages.

The HV839 is available in 10-pin MSOP (HV839MG-G) and 10-pin MLP (HV839K6-G) packages.

All parts are green and RoHS compliant.

Samples are available from stock.

Lead-time for production quantities is 4-6 weeks ARO.

Pricing is US $1.12 for the HV841MG-G, US $1.15 for the HV841K6-G, US $1.05 for the HV839MG-G, and US $1.08 for the HV839K6-G, all in 1000-unit quantities.