8m121812 Specifications and Applications Information 07/22/09 8m Class Single Lamp DC to AC Inverter Preliminary 8m Class The ERG 8m121812 (8m Class) low profile dc to ac inverter is specifically designed to power the Seiko G649DX5R10S LCD display module to a moderate brightness level from a +12 volt dc source. 8m Package PCB components are shown for reference only. Actual product may differ from that shown. 9 9 9 9 9 9 Less Than 8 mm in Height LCD Module Specific Display Compatible Output Connector Firm Specifications Application Information Designed, Manufactured and Supported in the USA 9 Custom Input and Output Voltages 9 Flexible System Interface 9 Notebook Display Head Compatible Package Configuration 1234 Connectors Input Connector 4 pins are 0.315" [8,00] Long, 0.025" [0,63] Square and are on 0.100" [2,54] Centers. Output Connector JAE IL-G-3P-S3L2-E 1 J1-1 J1-2 J1-3 J1-4 +Vin GND Enable * N/C J2-1 ACreturn J2-2 N/C J2-2 ACout PCB components are shown for reference only. Actual product may differ from that shown. This low profile inverter features: * Valid only with "C" jumper (CJP) removed page 1 of 3. 8m121812 Absolute Maximum Ratings Rating Symbol Value Units Input Voltage Range V in -0.3 to +13.2 V dc Storage Temperature T stg -40 to +85 o C Operating Characteristics With a load simulating the referenced display and lamp warm-up of 5 minutes. Unless otherwise noted Vin = 12.00 Volts dc and Ta = 25oC Characteristic Symbol Min Typ Max Units V in +10.8 +12.0 +12.6 V dc Temperature (note 1) Ts -20 - +80 Input Current (note 2) I in - 0.24 0.28 A dc Operating Frequency Fo 29 34 39 kHz V out (min) 1050 - - Vrms h - 79 - % Output Current (per lamp) I out - 6.0 - mArms Output Voltage V out - 375 - Vrms I Enable - 6.7 - mAdc Input Voltage Component Surface Minimum Output Voltage (note 3) Efficiency Enable Pin Input Current Requirement (notes 4,5,6) o C Specifications subject to change without notice. (Note 1) Surface temperature must not exceed 80 degrees C; thermal management actions may be required. (Note 2) Input current in excess of maximum may indicate a load/inverter mismatch condition, which can result in reduced reliability. Please contact ERG technical support. (Note 3) Provided data is not tested but guaranteed by design. (Note 4) Required User Enable/Disable Interface Circuit is shown on page 3. (Note 5) Valid only with "C" jumper (CJP) removed. (Note 6) With the inverter powered and CJP is in place, a ground applied to the enable pin J1-3 will open the inverter fuse. Application Notes: 1) The minimum distance from high voltage areas of the inverter to any conductive material should be .12 inches per kilovolt of starting voltage. 2) Mounting hardware to be non-conductive. 3) Open framed inverters should not be used in applications at altitudes over 10,000 feet. 4) ACreturn should be left floating, not grounded. 5) Contact ERG for possible exceptions. Made in USA page 2 of 3. 8m121812 PWM Dimming (Valid only with CJP removed) Required User Enable/Disable Interface Circuit Circuit or equivalent required with CJP removed for proper inverter turnoff. R1 +Vin 2N3906 R2 (4) (2) VPWM 5% - 100% 2N3904 10K 0 approx. 5 ms* With CJP in place, a ground applied to the enable pin J1-3 will open the inverter fuse. Vin R1 R2 5V 3.3K 1.5K 8V 3.3K 1.8K 12V 3.3K 2.2K 24V 10.0K 8.2K (3) * should be selected to be compatible with LCD and display driver 3 1 +Vin (1) GND Low ESR type input by-pass capacitor (22 uF - 100 uF) may be required to reduce reflected ripple. VPWM from 2.4V to less than or equal to +Vin. Full brightness without PWM control requires that pin 3 be tied to +Vin. Pin 3 must be at 0V to turn off. Duty Cycle 5% - 100%. search Gr Re R 13 M (R) c. RE UL p, In ou Endi co tt (1) (2) (3) (4) 2 IS G I I O S TE RE D F 3 900 A3 1 Endicott Research Group, Inc. (ERG) reserves the right to make changes in circuit design and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by ERG is believed to be accurate and reliable. However, no responsibility is assumed by ERG for its use. page 3 of 3.