SFDEA3789F T55265GD057J-LW-A-ACN SM06B-SHLS-TF - Datasheet Archive
Specifications and Applications Information Smart For orce Smart Force LED Driver 04/19/10 Package Configuration The ERG Smart
SFDEA3789F SFDEA3789F Specifications and Applications Information Smart For orce Smart Force LED Driver 04/19/10 Package Configuration The ERG Smart Force Series of LED Drivers are specifically designed for applications which require wide dimming and LCD brightness stability over a wide input voltage range. The SFDEA3789F SFDEA3789F is designed to provide backlight power for the Optrex T55265GD057J-LW-A-ACN T55265GD057J-LW-A-ACN display. 8 mm or less in height .830 [21,08] 1 Wide input voltage range Constant LED current External dimming Output .910 [23,11] High dimming ratio Soft start One year warranty 3.150 [80,01] 2.105 [53,47] Input Connector Connectors Output Connector Molex 53261-0571 J1-1 J1-2 J1-3 J1-4 J1-5 Vin(+) Vin(+) GND GND Enable JST SM06B-SHLS-TF SM06B-SHLS-TF J2-1 J2-2 J2-3 J2-4 J2-5 J2-6 Anode 1 Anode 2 Anode 3 Cathode 1 Cathode 2 Cathode 3 1 .125 [3,18] Dia. (2x) 1.11 [28,19] Input .135 [3,43] PCB components are shown for reference only. Actual product may differ from that shown. Designed, manufactured and supported within the USA, the SFDE features: Mass: 13 grams page 1 of 4. SFDEA3789F SFDEA3789F Absolute Maximum Ratings Rating Symbol Value Units Input Voltage Range Vin -0.3 to +5.5 V dc Storage Temperature Tstg -40 to +85 Enable Input Voltage VEnable 0 to Vin V dc Symbol Min Typ Max Units V in +4.5 +5.0 +5.5 V dc Temperature (Note 1) Ts -40 - +80 Input Current I in 0.58 0.68 0.78 A dc Peak Inrush Current (Note 2) I peak - 2.5 - A dc LED String Voltage V LE D 11.9 13.2 14.2 V dc h - 70 - % I out 57 60 64 mAdc Turn-on Threshold Vthon - - 2.0 V dc Turn-off Threshold Vthoff 0.8 - - V dc REnable - 5 - kOhms o C Operating Characteristics Unless otherwise noted Vin = 5.00 Volts dc and Ta = 25oC. Characteristic Input Voltage Component Surface Efficiency Output Current (per string) o C Enable Pin (Note 3) Enable Input Impedance (Note 4) Specifications subject to change without notice. Note 1 Note 2 Note 3 Note 4 Surface temperature must not exceed 80°C. SOT89 package to be at or below 110°C. SOT89 package is 75°C at 25°C ambient temperature. Peak inrush occurs over a 1 to 3 ms time period, during initial startup. The input voltage to the driver must be within its operating characteristic before the driver is enabled, otherwise the driver may not start or may shut down unexpectedly. Input impedance is 5.0 kOhms to GND. page 2 of 4. SFDEA3789F SFDEA3789F Application Information The ERG SFDEA3789F SFDEA3789F has been designed to be configured in multiple ways: NO DIMMING · OPERATION: The SFD driver can be configured to operate without dimming by pulling up the Enable Pin (J1-5). · Pins 1 and 2 of connector J1 must be connected to +Vin, between 4.5 and 5.5 Vdc. Pins 3 and 4 of connector J1 must be connected to GND. EXTERNAL PWM DIMMING · · · OPERATION: External PWM configuration as shown in Figure 1 allows the user to control display brightness with an externally generated PWM signal. The user is responsible to provide the PWM signal. A dimming ratio up to 5000:1 at 200 Hz is possible with this configuration. DIMMING: Dimming is accomplished by applying a PWM signal to the Enable Pin (J1-5). PWM on and off levels are specified in the Operating Characteristics section of the data sheet. Display brightness is modulated by controlling the PWM duty cycle as shown in Graph 1. Pins 1 and 2 of connector J1 must be connected to +Vin, between 4.5 and 5.5 Vdc. Pins 3 and 4 of connector J1 must be connected to GND. page 3 of 4. SFDEA3789F SFDEA3789F EXTERNAL PWM DIMMING Graph 1 1,2 +5V 3,4 Vin Anode 1 Cathode 1 GND Anode 2 Cathode 2 J1 J2 Anode 3 Cathode 3 Duty Cycle 0% - 100% 5V 5 0V Enable 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 of 4.