DMF63359 LTM213U6-L01 SM02B-BHSS-1-TB - Datasheet Archive

 

Specifications and Applications Information Preliminary The ERG DMF63359 (DMF Series DC to AC inverter DMF Series) features

 

DMF63359 DMF63359 Specifications and Applications Information Preliminary The ERG DMF63359 DMF63359 (DMF Series DC to AC inverter DMF Series) features onboard connectors and can be easily dimmed using an external pulse-width modulated control signal or using the onboard PWM with an external analog voltage. This unit is less than 9mm in height and the six mounting holes makes installation very straight forward. Package Configuration 2.83 [71,8] MAX 2.146 [54,51] .31[7,9] 1.437 [36,49] J3 Output (2X) Powered by a regulated 12 Volt DC source, the DMF63359 DMF63359 is designed to power the Samsung LTM213U6-L01 LTM213U6-L01 6 lamp backlight, with onboard PWM. J5 1 1 Product Features 4.488 [114,00] Small Package Size, less than 9mm in height. High Dimming Ratio (Greater than 1000:1) 9.52 [241,8] MAX J1 High Efficiency 1 8.976 [228,00] Made in U.S.A. Input Output (2X) 1 1 DMF Package PCB components are shown for reference only. Actual product may differ from that shown. .26 [6,7] J2 J4 PCB components are shown for reference only. Actual product may differ from that shown. 11/22/06 Six Lamp DC to AC Inverter .120 [3,0] Dia. (6X) Mass: 93 grams Pin Descriptions Connectors Input Molex 22-05-3071 Output J2, J3 JST SM04(9-E2)B-BHS-1-TB Output J4, J5 JST SM02B-BHSS-1-TB SM02B-BHSS-1-TB J1-1 J1-2 J1-3 J1-4 J1-5 J1-6 J1-7 Vin Vin GND GND Enable/PWM Control N/C J2,J3-1 J2,J3-2 J2,J3-3 J2,J3-4 ACout ACout ACreturn ACreturn J4,J5-1 ACout J4,J5-2 ACreturn page 1. DMF63359 DMF63359 Absolute Maximum Ratings Rating Symbol Value Units Input Voltage Range Vin -0.3 to +13.2 V dc Storage Temperature Tstg -40 to +85 o C Operating Characteristics With a load simulating the referenced display and lamp warm-up of 20 minutes. Unless otherwise noted Vin = 12.00 Volts dc and Ta = 25oC. Characteristic Symbol Min Typ Max Units Input Voltage Vi n +10.8 +12.0 +12.6 V dc Component Surface Temperature Ts -20 - +80 Input Current (Note 1) I in - 3.1 3.6 A dc Input Ripple Current l rip - 60 - mApk-pk Operating Frequency Fo 25 30 35 kHz Vout (min) 2200 - - Vrms h - 90 - % Output Current (per lamp) I out - 7.5 - mArms Output Voltage Vout - 740 - Vrms Turn-Off Threshold V thoff GND - 0.8 V dc Turn-On Threshold V thon 2.0 - Vi n V dc Impedance to Vin REnable 45 47 50 kOhms Minimum Output Voltage Efficiency o C Enable Pin Specifications subject to change without notice. (Note 1) Input current in excess of maximum may indicate a load/inverter mismatch condition, which can result in reduced reliability. Please contact ERG technical support. 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 should be non-conductive. 3) Open framed inverters should not be used in applications at altitudes over 10,000 feet. 4) Contact ERG for possible exceptions. 5) Check display wire locations at connectors to be sure they match Pin Descriptions on page 1. page 2. DMF63359 DMF63359 Onboard PWM Unless otherwise noted Vin = 12.00 Volts DC, Ta = 25 oC and unit has been running for 20 minutes. Characteristic Symbol Min Typ Max Units Frequency fpwm - 160 - HZ Control Full On Vctrll - 4.5 - V Control Input Bias Current I cb i a s - - 10 uA Pin Descriptions Vin Input voltage to the inverter. Both pins should be connected for optimum reliability and efficiency . GND Inverter ground. Both pins should be connected for optimum reliability and efficiency. 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. Enable Inverter Enable. If this pin is driven high, the inverter is enabled. Pull this pin low to disable inverter operation. Application information The DMF series of inverters is designed to power up to six cold cathode fluorescent lamps with combined power of up to sixty watts. An external enable control and an onboard analog controlled pulse width modulator provide flexibility in allowing either PWM or analog methods for dimming. The DMF inverter can reliably dim to less than 0.5% duty cycle, which results in an electrical dimming ratio of greater than 200:1. Depending upon the attached backlight assembly, optical dimming ratios of greater than 1000:1 can be accomplished. Graph 1 shows the relationship of relative brightness to duty cycle for a typical backlight assembly. External shutdown or external PWM operation of the inverter is accomplished using the Enable pin. Enabling the inverter is accomplished by pulling this pin high (above Vthon). Pulling this pin low (below Vthoff) disables the inverter. If analog voltage dimming is required, the onboard PWM can be enabled. The analog voltage is applied to the Control pin. Figure 1 shows how to connect the inverter for onboard PWM operation. Graph 2 shows the relationship of PWM duty cycle to input control voltage. If more than one inverter is used in a backlight assembly, the PWM signal for each inverter should be synchronized to prevent flickering. Connect the Enable pin of each inverter to the external PWM source. Connect the control pin to GND. page 3. DMF63359 DMF63359 Control Voltage vs. Duty Cycle Relative Brightness vs. Duty Cycle 80% Duty Cycle (%) 100% 0.8 Relative Brightness 1.0 0.6 0.4 60% 40% 20% 0.2 0.0 0 20 40 60 80 100 0% 0 1 2 3 4 5 Control Voltage (V) Duty Cycle (%) Graph 1 Graph 2 Typical Application J2-1 Vin J2-3 Vin J2-2 GND +12V Lamp 1 J2-4 GND J4-1 Lamp 2 Lamp 3 J4-2 +12V J3-2 Control 0 Volts = Full on Lamp 4 J3-4 J3-1 Lamp 5 J3-3 + Enable - Disable or PWM Input J5-1 Lamp 6 J5-2 search Gr Re R 13 M ® c. RE UL p, In ou Endi co tt Figure 1 IS G 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.