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| Standard ICs LED driver BA618 The BA618 is an IC developed for driving 7-segment LED displays, and contains seven positive logic circuits. Input and output are directed in the same direction by DIP Pin 16, with the layout optimized to facilitate mounting. *Applications LED drivers Relay drivers *Features seven circuits. 1) Contains 2) Current of up to 100mA can be driven. 3) Input and output are directed in the same direction, for easy mounting. 4) Can be directly coupled with TTL. *Block diagram OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 VCC 1 2 3 4 5 6 7 8 16 IN1 15 IN2 14 IN3 13 IN4 12 IN5 11 IN6 10 IN7 9 GND 1 Standard ICs BA618 *Absolute maximum ratings (Ta = 25C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Maximum drive current Allowable input voltage Symbol VCC Pd Topr Tstg IOUT VIN Limits 16 500 - 30 ~ + 75 - 55 ~ + 125 100 - 0.5 ~ + 16 Unit V mW C C mA V Reduced by 5mW for each increase in Ta of 1C over 25C. *Internal circuit configuration BA618 1 circuit 7 VCC (8) 1.75k OUTPUT INPUT 12k 6.5k GND (9) 42k Fig. 1 *Electrical characteristics (unless otherwise noted, Ta = 25C, VCC = 10V, RL = 100, CL = 20pF) Parameter Output low level supply current Output high level input current Output high level input voltage Output low level voltage Output high level voltage Output low level leakage current Output high level input voltage @ Symbol ICC (OFF) IIN (ON) VIN (ON) VIN (OFF) VOUT (IN) IOL (OFF) VIN@ (ON) Min. -- -- -- 0.8 8.5 -- -- Typ. -- 0.4 1.9 1.5 8.9 -- 1.9 Max. 500 0.8 2.5 -- -- 30 3 Unit A mA V V V A V VIN = 0V VIN = 5V, VOUT VOUT VOUT 8.5V Conditions 8.5V (RL = 200) 3mV VIN = 2.5V VIN = 0.8V VOUT 8.5V *Electrical characteristic curves 2.0 OUTPUT VOLTAGE: VOUT (V) INPUT CURRENT: IIN (mA) 1.6 1.2 20 VCC = 10V RL = 100 16 12 0.8 8 0.4 4 0 0 4 8 12 16 20 0 0 4 8 12 16 20 INPUT VOLTAGE: VIN (V) INPUT VOLTAGE: VIN (V) Fig. 2 Input characteristics Fig. 3 Input / output characteristics 2 Standard ICs BA618 *Measurement circuit A ICC 8 1 INPUT A 2 IIN VIN 9 RL CL = 20pF V VOUT OUTPUT VCC = 10V BA618 GND Note: All blocks use the same test circuit. Fig. 4 *Application example Segment driver BA618 1 / 7 circuit TTL GATE R1 ~ R7 16 15 14 13 12 11 10 9 LED 7-segment 1 2 3 4 5 6 7 8 R1 R2 R3 R4 R5 R6 R7 5-digit driver 14 13 12 11 10 PMOS GATE Digit driver BA664 9 8 1 2 3 4 5 6 7 7-segment driver BA618 Fig. 5 7-segment, 5-digit LED driver circuit *External dimensions (Units: mm) 19.4 0.3 16 9 6.5 0.3 0.51Min. 1 8 7.62 3.2 0.2 4.25 0.3 0.3 0.1 2.54 0.5 0.1 0 ~ 15 DIP16 BA664 3 |
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