Endicott Research Group, Inc. E1950C Specifications and Applications Information E1950C Inverter with PWM Dimming/Disable +5.0V The ERG E1950C (E200II Series) dc to ac inverter is specifically designed to power the Sharp LQ10D421 LCD display module to a nominal brightness level from a +12 volt dc source. 5% - 100% Controls Dimming Enable Control 0 Two CCF Tubes 330 S Disable The E1950Cs small size and encapsulated package makes it the ideal power source for applications where small size, high efficiency and reliability are critical. approx. 6.6 ms* + 1 Vin - 6 4 This inverter is designed to satisfy the most common cold-cathode lighting requirements for the Sharp LQ10D421 display where a PWM dimming control option is desired. Custom units, providing different inputs, outputs or package refinements are available. 5 2 3 Two Tube DC to AC Inverter Preliminary 08/04/00 PWM Signal E1950C 2601 Wayne St., Endicott NY 13760 607-754-9187 Fax 607-754-9255 http://www.ergpower.com E200II Package Package Configuration .15[3,8] Min 1.26[32,0] Max .60[15,24] Max .025[0,64] Square (6X) .700[17,78] * should be selected to be compatible with LCD and display driver Connection Diagram Control (+5.0V) 330 S + Vin - 1 * 6 2 Two CCF Tubes 2601 Wayne St., Endicott NY 13760 607-754-9187 5 3 * Input bypass capacitor may be required (10uf - 100uf) page 4. 1.56 [39,7] Max 1.100 [27,94] 4 E1950C Endicott Research Group, Inc. .300[7,62] .28[7,1] Please Note: Values for PWM Control Voltage and Control Resistor have been selected to maintain a Minimum Source Current of 15mAdc. Any deviations to the values specified above may result in unreliable operation and/or Inverter damage. Dimming of tubes is only possible by varying the Duty cycle of the PWM signal. 2 .300[7,62] 6 3 1 5 4 .400[10,16] .22[5,6] 1. Vin(+) 2. Vin(-) 3. Common .800[20,32] 4. Vout(AC) 5. Vout(AC) 6. Control E1950C Value Units Input Voltage Range Vi n -0.3 to +13.5 V dc Operating Temperature To 0 to +70 o Tstg -40 to +85 o Storage Temperature Relative Frequency vs. Input Voltage C C Recommended Operating Conditions Rating Input Voltage Symbol Value Units Vi n +6 to 13.2 V dc Relative Brightness vs. Input Power 36.0% 140% 30.0% 120% Relative Brightness Symbol Relative Frequency Rating 24.0% 18.0% 12.0% 6.0% 0.0% -6.0% 6 8 10 12 14 100% 80% 60% 40% 20% 0.75 16 Input Voltage (Vdc) Typ Max Units 9.75 0.59 Input Current Iin - 0.57 0.64 A dc 8.25 0.51 Operating Frequency Fo 24 29 34 KHz Vout (min) 12 2 0 - - Vrms - 88 - % Output Current per tube Iout - 6.0 - marms Output Voltage (When Powering each tube in the Sharp LQ10D421 display) Vout - 5 00 - Vrms - - 15 - madc Efficiency Pin6 Input Current Requirement Input Current (Adc) Min Input Power (Watts) Symbol Minimum Output Voltage 6.75 5.25 3.75 2.25 8.75 0.35 0.27 0.19 0.11 0.75 6 8 10 12 14 16 6 8 10 12 14 16 Input Voltage (Vdc) +Vin 5V Disable Circuit Specifications subject to change without notice. 6.75 0.43 Input Voltage (Vdc) After tube has be allowed to warm-up for 5 minutes External Disable Circuit shown on page 3. 4.75 Input Current vs. Input Voltage Input Power vs. Input Voltage Unless otherwise noted Vin = 12.00 Volts dc and Ta = 25 oC 2.75 Input Power (Watts) Electrical Characteristics Characteristic E1950C Typical Performance Curves Absolute Maximum Ratings 3.3 K 2N3906 1.5 K Control 1K Control (pin 6) 2N3904 1N4148 Endicott Research Group, Inc. Made in USA page 2. Endicott Research Group, Inc. page 3.