Endicott Research Group, Inc. K1918 K1918 2601 Wayne St., Endicott NY 13760 607-754-9187 Fax 607-754-9255 http://www.ergpower.com Specifications and Applications Information Dimming Option (valid when the "C" jumper is removed) * should be selected to be compatible with LCD and display driver The ERG K1918 (8m Class) low profile dc to ac inverter is specifically designed to power the Sharp LQ10D341/ 344/345/421 or LQ104V1DG11 LCD display module to a moderate brightness level from a +12 volt dc source. 0% - 100% approx. 5.5 ms* Vin + 2 Tube DC to AC Inverter Preliminary 11/08/99 +Vin 8m Class Package Configuration This low profile inverter features: (1) 1 2 u u u u u u 3 CCFT Lamp CCFT Lamp u u u "K Series" Package Less Than 8 mm in Height LCD Module Specific Display Compatible Output Connector Firm Specifications Application Information Designed, Manufactured and Supported in the USA Custom Input and Output Voltages Flexible System Interface Notebook Display Head Compatible .79[20,1] Output (2X) 3.30 [83,8] 4.20 [106,7] Pin Descriptions Pulse-Width Modulation Controlled Output Connectors 4 pins are 0.315" [8,00] Long, 0.025" [0,63] Square and are on 0.100" [2,54] Centers. JST SM02(8.0)B-BHS1TB Input c Input Connector * Note 1 - Input by-pass capasitor (25uf - 100uf) may be required to reduce reflected ripple. J1-1 J1-2 J1-3 J1-4 Endicott Research Group, Inc. 2601 Wayne St., Endicott NY 13760 607-754-9187 Vin(+) GND Control * NC * Valid when the "C" Jumper is removed page 4. 4 1 J2-1 ACout J2-2 NC J2-3 ACout J3-1 ACout J3-2 NC J3-3 ACout .120[3,05] Dia. (2x) .45[11,4] .47[11,9] .12[3,0] K1918 K1918 Typical Performance Curves Absolute Maximum Ratings Value Units Input Voltage Range Vi n -0.3 to +15.0 Vdc Operating Temperature To 0 to +70 o Storage Temperature Tstg -40 to +85 o Relative Frequency vs. Input Voltage 11.5% C C Recommended Operating Conditions Rating Input Voltage Symbol Value Units Vi n +6.0 to 13.2 Vdc Relative Brightness vs. Input Power 9.5% Relative Brightness Symbol Relative Frequency Rating 7.5% 5.5% 3.5% 1.5% -0.5% 8.00 10.00 12.00 14.00 130% 120% 110% 100% 90% 80% 70% 60% 50% 40% 3.35 5.35 Input Voltage (Vdc) Electrical Characteristics 7.35 9.35 Input Power (Watts) Unless otherwise noted Vin = 12.00 Volts dc and Ta = 25 oC Min Typ Max Units Input Current Iin - 0.610 0.675 Adc Operating Frequency Fo 50 58 65 KHz Vout 1250 - - Vrms Efficiency - 82 - % Output Current (per tube) Iout - 6.3 - marms Vout - 475 - Minimum Output Voltage Output Voltage (per tube) After tube has been allowed to warm-up for 5 minutes Vrms Specifications subject to change without notice Endicott Research Group, Inc. Made in USA page 2. Input Current vs. Input Voltage Input Power vs. Input Voltage 0.650 9.35 8.35 Input Current (Adc) Symbol Input Power (Watts) Characteristic 7.35 6.35 5.35 4.35 3.35 8.00 10.00 12.00 14.00 0.600 0.550 0.500 0.450 0.400 8.00 Input Voltage (Vdc) 10.00 12.00 14.00 Input Voltage (Vdc) Endicott Research Group, Inc. page 3.