8mAD3095 Specifications and Applications Information Two Lamp DC to AC Inverter 03/16/11 .26 [6,6] 1 Powered by a regulated +5 Volt DC source, the 8mAD3095 is specifically designed to power the NEC NL8060BC26-17 display backlight. Package Configuration Input Product Features Small Package Size, less than 9mm in height High Dimming Ratio High Efficiency Made in U.S.A. 3.230 [82,04] 3.96 [100,6] MAX .120 [3,05] Dia.(2x) This unit complements our 8m Series of DC to AC Inverters 1 Output .600 [15,24] .10 [2,5] .82 [20,8] MAX PCB components are shown for reference only. Actual product may differ from that shown. The ERG 8mAD3095 (8m Series) DC to AC 8m Series inverter features onboard connectors and can be easily dimmed using an external analog control signal or external PWM generator. Pin Descriptions 8mAD Package PCB components are shown for reference only. Actual product may differ from that shown. Connectors Input J1 Molex 53261-0871 Output J2 JST SM03(4.0)B-BHS-1-TB J1-1 J1-2 J1-3 J1-4 J1-5 J1-6 J1-7 J1-8 +Vin +Vin GND GND Enable Control N/C GND J2-1 ACreturn J2-2 ACout J2-3 ACout page 1. 8mAD3095 Absolute Maximum Ratings Rating Symbol Value Units Input Voltage Range V in -0.3 to +5.5 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 = 5.00 Volts dc and Ta = 25oC. Characteristic Symbol Min Typ Max Units V in +4.50 +5.00 +5.25 V dc Temperature (note 1) Ts -20 - +80 Input Current (note 2) I in - 1.2 1.4 A dc Input Ripple Current I rip - 20 - mA pk-pk Fo 38 43 48 kHz V out (min) 1400 - - Vrms h - 85 - % Output Current (per lamp) I out - 5.0 - mArms Output Voltage V out - 510 - Vrms Turn-off Threshold V thoff GND - 0.5 V dc Turn-on Threshold V thon 2.5 - Vi n V dc Impedance to Vin R Enable - 47 - kOhms Input Voltage Component Surface Operating Frequency Minimum Output Voltage (note 3) Efficiency o C Enable Pin (note 4) 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) The inverter is always enabled with an internal pullup resistor tied to the enable pin. A ground on the enable input will turn the inverter off. 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. page 2. 8mAD3095 Onboard PWM Unless otherwise noted Vin = 5.00 Volts DC, Ta = 25 oC and unit has been running for 5 minutes. Characteristic Symbol Min Typ Max Units Frequency f pwm - 160 - HZ Control Input Bias Current I cb i a s - - 10 uA Pin Descriptions +Vin Input voltage to the inverter. GND Inverter ground. Control Analog voltage input to the onboard pulse width modulator. Increasing this voltage increases the off time of the onboard PWM resulting in decreased brightness. The inverter is full on when this voltage is near inverter ground. Enable Inverter Enable. The inverter is always enabled with an internal pullup resistor tied to the enable pin. Pull this pin low to disable inverter operation. The onboard PWM is always utilized. Application information The 8mAD series of inverters is designed to power two cold cathode fluorescent lamps each with four watts. An external analog control interfaces with an onboard pulse width modulator to provide dimming control. The 8mAD inverter can reliably dim to less than 5% duty cycle. External shutdown of the inverter is accomplished using the Enable pin. Pulling this pin low (below Vthoff) disables the inverter. If analog voltage dimming is required, the analog voltage is applied to the Control pin. Figure 1 shows how to connect the inverter for onboard PWM operation. Graph 1 shows the relationship of PWM duty cycle to input control voltage. If an external PWM is used, simply connect the Enable pin to the PWM source and connect the Control pin to inverter ground. If the onboard PWM is used, connect the analog voltage to the Control pin. page 3. 8mAD3095 Graph 1 Typical Application 1 +5V +Vin 2 +Vin J1 +5V 3 GND 4 GND 8 GND ACout Lamp 1 ACout Lamp 2 J2 ACreturn 6 Control 0V = Full ON 5V = Full OFF + On - Off 5 Enable search Gr Re R 13 M (R) c. RE UL p, In ou Endi co tt Figure 1 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 4.