HV830LG-G Microchip

Supertex inc. HV830 High Voltage EL Lamp Driver IC Features General Description The Supertex HV830 is a high-voltage driver designed for Processed with HVCMOS technology driving EL lamps of up to 50nF. EL lamps greater than 50nF 2.0 to 9.5V operating supply voltage can be driven for applications not requiring high brightness. DC to AC conversion The input supply voltage range is from 2.0 to 9.5V. The device 200V peak-to-peak typical output voltage uses a single inductor and a minimum number of passive Large output load capability typically 50nF components. The nominal regulated output voltage that is Permits the use of high-resistance elastomeric lamp applied to the EL lamp is 100V. The chip can be enabled components by connecting the resistors on the RSW-Osc and REL-Osc Adjustable output lamp frequency to control lamp pins to the VDD pin, and disabled when connected to GND. color, lamp life, and power consumption Adjustable converter frequency to eliminate harmon- The HV830 has two internal oscillators, a switching MOSFET ics and optimize power consumption and a high-voltage EL lamp driver. The frequency of the Enable/disable function switching converter MOSFET is set by an external resistor Low current draw under no load condition connected between the RSW-Osc and the VDD pins. The EL Very low standby current - 30nA typical lamp driver frequency is set by an external resistor connected between the REL-Osc and the VDD pins. An external induc- tor is connected between the LX and VDD pins. A 0.01F to Applications 0.1F capacitor is connected between the CS pin and the Handheld personal computers GND. The EL lamp is connected between the VA and VB pins. Electronic personal organizers The switching MOSFET charges the external inductor and GPS units discharges it into the CS capacitor. The voltage at CS will Pagers start to increase. Once the voltage at CS reaches a nominal Cellular phones value of 100V, the switching MOSFET is turned OFF to con- Portable instrumentation serve power. The output pins VA and VB are configured as an H-bridge and are switched in opposite states to achieve 200V peak-to-peak across the EL lamp. Block Diagram VDD LX CS Switch RSW-Osc Q Osc VA GND + Q C Disable Output V REF Osc Q VB REL-Osc Q Doc. DSFP-HV830 Supertex inc. E072913 www.supertex.comHV830 Pin Configuration Ordering Information Part Number Package Packing REL-Osc VDD 1 8 HV830LG-G 8-Lead SOIC 2500/Reel 2 7 VA RSW-Osc -G denotes a lead (Pb)-free / RoHS compliant package CS 3 6 VB LX 4 5 GND Absolute Maximum Ratings 8-Lead SOIC Parameter Value (top view) Supply voltage, V -0.5 to +10V DD Output voltage, V -0.5 to +120V CS Product Marking Power dissipation 400mW Y = Last Digit of Year Sealed O O YWW Storage temperature -65 C to +150 C WW = Week Sealed HV830 O O L = Lot Number Operating temperature -25 C to +85 C LLLL = Green Packaging Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Continuous operation Package may or may not include the following marks: Si or of the device at the absolute rating level may affect device reliability. All voltages are referenced to device ground. 8-Lead SOIC Typical Thermal Resistance Package ja O 8-Lead SOIC 101 C/W Recommended Operating Conditions Sym Parameter Min Typ Max Unit Conditions V Supply voltage 2.0 - 9.5 V --- DD f V output drive frequency - - 1.5 KHz --- EL A-B O T Operating temperature -25 - +85 C --- A DC Electrical Characteristics (V = 3.0V, R = 1.0M, R = 3.3M, T = 25C unless otherwise specified) IN SW EL A Sym Parameter Min Typ Max Unit Conditions R On resistance of switching transistor - 2.0 4.0 I = 100mA DS(ON) V Output voltage - regulation 90 100 110 V V = 2.0V to 9.5V CS DD V - V Output peak-to-peak voltage 180 200 220 V V = 2.0V to 9.5V A B DD I Quiescent V current - disabled - 30 - nA R = Low DDQ DD SW-Osc I V supply current - 100 150 A V = 3.0V. See Fig.1 DD DD DD I Input current including inductor current - 35 40 mA V = 3.0V. See Fig.1 IN DD V Output voltage on V - 95 - V V = 3.0V. See Fig.1 CS CS DD f V - V output drive frequency 220 250 280 Hz V = 3.0V. See Fig.1 EL A B DD f Inductor switching frequency 55 65 75 KHz V = 3.0V. See Fig.1 SW DD D Switching transistor duty cycle - 88 - % --- Doc. DSFP-HV830 Supertex inc. E072913 www.supertex.com 2