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| Standard ICs 5-channel high current driver BA612 The BA612 is a high-current driver IC, and contains an array of five Darlington transistors, each with input resistance. Input and output can be directed in the same direction using DIP Pin 14, with the layout optimized to facilitate mounting. *Applications drivers Hammer solenoid Relay drivers LED drivers *Features Darlington transistor array. 1) 5-circuit 2) Large current (up to 400mA) can be driven. 3) Input and output pins are aligned in the same direction, for easy mounting. 4) High current transfer ratio. 5) Can be coupled with MOS ICs. *Block diagram N.C. 1 14 N.C. IN1 2 13 OUT1 IN2 3 12 OUT2 IN3 4 11 OUT3 IN4 5 10 OUT4 IN5 6 9 OUT5 GND 7 Sub 8 N.C. 1 Standard ICs BA612 *Absolute maximum ratings (Ta = 25C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Collector current Input pin voltage withstanding ( + ) Input pin voltage withstanding ( - ) Symbol VCC Pd Topr Tstg IC VIN + VIN - Limits 24 550 - 25 ~ + 75 - 55 ~ + 125 450 24 - 0.5 Unit V mW C C mA V V Reduced by 5.5mW for each increase in Ta of 1C over 25C *Internal circuit configuration 13 12 11 10 9 Q1 R1 2 R2 R3 Q2 R2 R3 Q4 R2 R3 Q6 R2 R3 Q8 R2 R3 7 R1 = 25k R2 = 25k R3 = 2k 3 R1 Q3 4 R1 Q5 5 R1 Q7 6 R1 Q9 Q10 Fig.1 *Electrical characteristics (unless otherwise noted, Ta = 25C) Parameter Usage voltage range Output leakage current Output current (1 circuit) Output current (5 circuits) Collector saturation voltage DC current transfer ratio Input current Symbol Min. Typ. VCC IL IOUT IOUT VCE (sat) hFE IIN -- 2000 -- -- -- -- -- -- -- Fig.3 -- -- 0.6 2.0 -- 1.0 Max. Unit 20 100 400 V A mA -- V -- mA VCC = 26V, VIN = 0V When only 1 circuit is on DC per circuit when all 5 circuits are on at once IOUT = 400mA, VIN = 17V -- VIN = 17V, IOUT = 0mA Conditions -- Measurement circuit -- Fig.10 Fig.11 -- Fig.11 -- Fig.11 2 Standard ICs BA612 *Electrical characteristic curves 800 400 All 5 circuits on at once Repetition: 1Hz min. 300 OUTPUT SATURATION VOLTAGE: VO (sat) (V) MAXIMUM OUTPUT CURRENT: IOUT (mA) 1000 POWER DISSIPATION: Pd (mW) 500 4.0 3.2 600 550 400 2.4 200 Ta = 25C 100 Ta = 50C 1.6 VIN = 17V 200 0.8 0 75 - 25 0 40 80 120 125 160 0 0 20 40 60 80 100 0 0 200 OUTPUT CURRENT: IOUT (mA) 400 AMBIENT TEMPERATURE: Ta (C) DUTY CYCLE: (%) Fig.2 Power dissipation vs. ambient temperature Fig.3 Output current vs. duty cycle Fig.4 Output saturation voltage vs. output current 10 36 OUTPUT VOLTAGE: VOUT (V) INPUT THRESHOLD VOLTAGE: Vth (V) 8 GAIN CURRENT: hFE 105 28 + 75 20 + 100 + 50 + 25 12 0 4 0 0 2 4 -- 25 -- 50C 6 When IO = 20mA 4 3 VO = 1.5V IO = 400mA 104 IO = 200mA 2 6 8 10 0 103 - 40 0 40 80 120 - 40 - 20 0 20 40 60 80 AMBIENT TEMPERATURE: Ta (C) AMBIENT TEMPERATURE: Ta (C) INPUT VOLTAGE: VIN (V) Fig.5 Output voltage vs. input voltage (temperature characteristic) Fig.6 Input threshold voltage vs. ambient temperature Fig.7 DC current amplification ratio vs. ambient temperature (!) (when VO = 1.5V) OUTPUT SATURATION VOLTAGE: VO (sat) (V) DC FOWARD CURRENT TRANSFER RAT10: hFE 2.0 105 1.6 IO = 400mA 3 IO = 400mA VO = 2.0V 1.2 104 IO = 200mA 0.8 IO 0.4 IO = 200mA VIN 17V - 40 0 103 - 40 - 20 0 20 40 60 80 100 AMBIENT TEMPERATURE: Ta (C) VO (sat) 40 80 120 0 AMBIENT TEMPERATURE: Ta (C) Fig.8 DC current amplification ratio vs. ambient temperature (@) (when VO = 2V) Fig.9 Output saturation voltage vs. ambient temperature 3 Standard ICs BA612 *Measurement circuit IN BA612 OUT VCC 26V *Application example VCC IL BA612 1 5 circuit 7 PMOS GATE Fig.10 Fig.12 IN BA612 IIN VIN OUT IOUT 17V 7 VOUT (sat) Connections should be made as shown in Figure 12 if inductive load is being driven. A clamp diode has to be added in series with the load to suppress surges in the inductive load. Fig.11 *External dimensions (Units: mm) 19.4 0.3 6.5 0.3 7.62 14 8 1 4.25 0.3 0.51Min. 7 3.2 0.2 0.3 0.1 2.54 0.5 0.1 0 ~ 15 DIP14 4 |
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