KA3903 FAIRCHILD [Fairchild Semiconductor], KA3903 Datasheet
KA3903
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KA3903 Summary of contents
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... FAN8903(KA3903) Power Window Motor Control IC Features • Protections - Human body protection with a simple switch - Over current protection with an integrator - Over voltage protection - Load dump protection - Reverse battery voltage protection • Low off-state quiescent current (150 A) • Adjustable output control time after car-key turn-off • ...
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... Step bias signal input Full close signal input OP amp output Current sense signal input Up signal output Power ground Down signal output Selectable mode signal input 2 Selectable mode signal input 1 Up signal input Down signal input Start up signal input Supply voltage FAN8903(KA3903 ...
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... FAN8903(KA3903) Internal Block Diagram Start COMP 15 + Start Vref1 TSD OVP Up 13 Gate drive Input logic Down Vref2 6 A/O Human 5 F/C protection Mode selection 1 GND 18.6V UVLO Delay Vref Latch 1 Delay D Q CLK Q Latch 2 Vref Q D CLK Q Delay 5V reference Vref 2 8 OUT 1 ...
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... V = DOWN FC V Vout on / off S/W Vtg TH1 V 4.2V < V < 4.6V TH2 =0.2A SAT =20mA SUS =Vouta AMP OUTH O V IO=+10 A OUT1 FAN8903(KA3903) Value Unit 17 V 0.7 V 400 +150 C Min. Typ. Max. Units 8.3 8.8 9.3 V 1.1 1.25 1.6 V 17.2 18.6 20.0 V 8 150 200 - 5 ...
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... FAN8903(KA3903) Application Information FAN8903 BAT. UP INPUT DOWN START KEY General When the start-key is turned on by operator, the FAN8903 will wait the command up or down of the window. Upon the command up, the power stage composed of relays will be activated by basic function circuit which consists of input, logic, timing and output circuit ...
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... FAN8903 R2 10k COMP1 300k 47 F 0.92V (at V =12V) CC FAN8903 2 + Vref3 Vct + (Q1) will be turned off and capacitor (Ct) is charged exponentially s FAN8903(KA3903 UVLO & REFERENCE ...
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... FAN8903(KA3903) Car-key Turn-off Function The window can be operated for a certain period even in the state of the start-key to be off. If the start-key is turned off, the dis- charge time for the voltage V1 to pin #15 will be determined by the following time constant User can get a time he wants as the discharge time for the voltage V1 by changing the capacity of the cap (C1) and the values of the resistances (R1 or R2) ...
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... To ensure precision of the reference level, Rt can be adjusted Vrs Vref – Vouth 0.8 = – ) according to motor type and the cancel time by S OP-amp Vro + OCP 0. FAN8903(KA3903 the Vrs exceeds the reference volt- S changing R3 and current or a current slightly lager OCP Vro S2 S1 Vref Vrs ...
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... FAN8903(KA3903) NTC MOTOR Rt 260k C2 105 Vrs V2 R3 47k R S 10m Human Body Protection(HBP) Using An End Switch The human body protection carried out when the over current protection signal is issued just while the is up going and the end switch is closed, in the auto mode. The controller stop the window glass, and then reverses the rotating direction of motor to move down the window at the bottom. There are some cases in the window glass to be locked ...
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... With the circuitry of this type, the FAN8903 can sustain 24V for one minute (or continuously) and load dump (70V, 0.2sec) condition without a damage. 10 R10 // Rntc + FAN8903 Added part Motor (+) 2 KSR2007 Q6 NTC 6 Q4 KSC945 C2 R10 Rt 7 Pin # FAN8903(KA3903 COMP OP-amp Vro + OCP + 0.8V Vref ...
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... FAN8903(KA3903) Power Supply For the reasons of interference protection and surge immunity, all circuit should be provided with a RC circuit for a current limitation in the event of overvoltage and for buffering in the event of voltage dips at Vref. Suggested dimensioning; Rin=180 , Cin= shown in the typical applications. ...
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... Typical Application Circuit1 GND 1 Vref 2 390k Step 4 F/C 5 A/O 6 474 68k OUT 20m 12 Rin 180 Start 15 + Cin 47 4.7k Down 14 104 FAN8903 4. 104 OUT Relay FAN8903(KA3903) Start key BAT. 12V Down S/W Up S/W M ...
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... FAN8903(KA3903) Typical Application Circuit2 150k 390k + 12k 10 4.7k End switch 103 NTC 260k 8. 10m Rin 180 V GND Cin 47 Vref 10k 2 Start Down 14 104 FAN8903 Step F/C 104 A OUT OUT 1N4937 BAT ...
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... Step F/C 5 104 106 A 474 OUT 2 OUT KSR1012 Q2 Q3 47k Light sensor Q4 Q5 Pin #8 KSR1008 FAN8903(KA3903) Start key 1N4937 BAT. 12V C2690 + Cin 47 4.7k Down S/W 4.7k Up S/W M Relay KSR1012 Pin #2 Q6 KSR2007 R10 KSC945 Pin #7 ...
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... FAN8903(KA3903) ...
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... FAN8903(KA3903) 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. ...