KA7543D Fairchild Semiconductor, KA7543D Datasheet
KA7543D
Specifications of KA7543D
Related parts for KA7543D
KA7543D Summary of contents
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... Applications • Electronic Ballast • Lighting Control System • Half Bridge Drive Control System ©2002 Fairchild Semiconductor Corporation www.fairchildsemi.com Descriptions The KA7543 is an advanced lamp current feedback dimming control IC. This ballast control IC provides all of the necessary features to implement wide range dimming control, soft start and constant power consumption for intelligent electronic ballast systems ...
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KA7543 Internal Block Diagram OUT1 UVLO 1. Vcc 2V Vref (bandgap regulator + 5/2 Current amp Vfb 30k Vab 7 ...
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Pin Assignments OUT2 OUT1 Pin Definitions Pin Number Pin Name 1 OUT1 Drive Output Connection 3 Vcc Supply Voltage Input 4 Cc Compensation Input Voltage Source 6 Vfb Negative Feedback Input 7 Vab ...
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KA7543 Absolute Maximum Ratings Parameter Supply Voltage Peak Drive Output Current Drive Output Clamping Diodes V > < -0 Operating Temperature Range Storage Temperature Range Power Dissipation Thermal Resistance (Junction-to-Air) Absolute Maximum Ratings ...
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Electrical Characteristics Unless otherwise specified, Vcc=12V, Ta=25 C Parameter 1 Lamp Feedback Voltage 2 Lamp Feedback Voltage Output Voltage High Output Voltage Low OSCILLATOR SECTION(NOTE1) Reference Frequency Reference Dead Time Soft Start Frequency Soft Start Time Current VOLTAGE INPUT DIMMING ...
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KA7543 Operating Description lamp feedback Vcs 2V Vfb 1V 0.5V 2V Vdm 1V 0 The KA7543 is an advanced, lamp current feedback ballast dimming control IC which drives half bridge converter. This control IC provides all the necessary features to ...
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Soft Start 4 Cc The soft start circuit charges the soft start capacitor, Cs connected to Cs pin. So the Cs pin voltage increases linearly when start-up and the current(is) makes the reference voltage(Vr) which is proportional to is current. ...
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KA7543 Dimming Control Stage error amp (+) is-id The condition for full dimming is when the Vdm voltage is 2V and the condition for full lighting is when the Vdm voltage is 0V. Dimming operation starts ...
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Abnormal Protection 30k Vab 7 Abnormal protection The abnormal protection is similar to the over current protection, but protection that detects abnormal connection of lamps. The abnormal protection circuit works when the Vab pin voltage is higher ...
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KA7543 Application Circuit <85 ~ 265V Input, 400V , Fluorescent Lamps Ballast(32W*2 / 36W*2)> NTC TNR INPUT C22C23C13 ...
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Components List (32W*2Lamp Application) Part Number R1 R2 R3 R10 R12, 13 R14 R15, 16 R17, 18 R19 C1 C10 C12, 21 ...
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KA7543 Components List(36W*2Lamp Application) Part Number R1 R2 R3 R10 R12, 13 R14 R15, 16 R17, 18 R19 C1 C10 C12, 21 ...
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Mechanical Dimensions Package 6.40 0.20 0.252 0.008 #1 # 7.62 0.300 Dimensions in millimeters 14-DIP 3.25 0.20 0.128 0.008 5.08 MAX 0.200 KA7543 0.20 MIN 0.008 3.30 0.30 0.130 0.012 13 ...
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KA7543 Mechanical Dimensions Package #1 #7 6.00 0.236 3.95 0.156 0.225 0.60 0.20 0.024 0.008 14 (Continued) 14-SOP 1.55 0.10 0.061 #14 #8 0.30 1.80 MAX 0.071 0.012 0.20 0.008 5.72 Dimensions in millimeters 0.05 MIN 0.002 0.004 ...
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... Ordering Information Product Number Package KA7543 14-DIP KA7543D 14-SOP Operating Temperature - +125 C KA7543 15 ...
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... KA7543 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...