BA6212

Standard ICs 8-channel high current driver BA6212 The BA6212 is a monolithic IC including 8 circuits and capable of high current drive. Capable of using a current as high as 400mA, it has a strobe pin, and is thus ideal for use as a driver circuit in thermal printers. Its input can be directly coupled to CMOS devices. •Applications Thermal printers Motors Relays LEDs and other drivers •Features drive capability of 400mA (Max). 1) High current 2) 8 circuits included. 3) Equipped with a strobe pin. 4) Easy installation due to inputs and outputs being aligned in the same direction. 5) Input can be directly connected to CMOS devices. •Block diagram ST 1 2 3 4 20 N.C. 19 OUT1 18 OUT2 17 OUT3 16 OUT4 15 OUT5 14 OUT6 13 OUT7 12 OUT8 11 VCC IN1 IN2 IN3 IN4 5 IN5 6 IN6 7 IN7 8 IN8 9 GND 10 1 Standard ICs BA6212 •Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Maximum output current Maximum output voltage Maximum input voltage Symbol VCC Pd Topr Tstg IOUT VOUT VIN Limits 7 1100∗ – 25 ~ + 75 – 55 ~ + 125 400 14 VCC Unit V mW °C °C mA V V •Internal circuit configuration 11 R1 7.3kΩ INPUT Q1 2~9 R2 6.6kΩ 1.2kΩ R3 Q3 OUT PUT 12 ~ 19 D1 R5 270Ω VCC Q2 ST 1 R4 30kΩ R6 3kΩ Q4 ∗ Reduced by 11mW for each increase in Ta of 1°C over 25°C. GND SUB 10 Fig. 1 •Electrical characteristics (unless otherwise noted, Ta = 25°C, V Parameter Output saturation voltage 1 Output saturation voltage 2 Output leakage current 1 Output leakage current 2 Input current Input low level voltage Input high level voltage Symbol VOUT 1 VOUT 2 IOL 1 IOL 2 IIN VIL VIH Min. — — — — — — 3.6 Typ. 0.2 0.4 — — – 0.5 — — 0.3 0.6 100 100 –1 1 — V V CC = 5V) Conditions IOUT = 200mA, VIN = 1V IOUT = 400mA, VIN = 1V VIN = 3.6V, VOUT = 12V VIN = 1V, VOUT = 12V, VST = 0.3V VIN = 0V, IOUT = 0mA — — Max. Unit µA µA mA V V •Application example + 5V Drive power supply 11 S.T. input 1 2 3 4 Input 5 6 7 8 9 19 18 17 Load BA6212 16 15 14 13 12 10 Fig. 2 2 Standard ICs BA6212 •Electrical characteristic curves 500 OUTPUT CURRENT: IOUT (mA / ch) INPUT CURRENT: IIN (µA) 400 – 600 16 VCC = 5V OUTPUT VOLTAGE: VOUT (V) 8 12 VCC = 5V – 400 300 8 200 Ta = 75°C 100 Ta = 55°C – 200 4 0 0 20 40 60 80 100 0 0 2 4 6 0 0 2 4 6 8 DUTY CYCLE: (%) INPUT VOLTAGE: VIN (V) INPUT VOLTAGE: VIN (V) Fig. 3 Maximum output current when all channels are ON simultaneously Fig. 4 Input current characteristics Fig. 5 Input threshold voltage characteristics 10 OUTPUT VOLTAGE: VOUT (V) 8 6 4 2 0 0 0.2 0.4 0.6 0.8 1.0 STROBE INPUT VOLTAGE: VST (V) Fig. 6 Strobe input characteristics •External dimensions (Units: mm) 26.3 ± 0.3 20 11 6.5 ± 0.3 1 4.05 ± 0.3 0.51Min. 10 7.62 3.05 ± 0.2 0.3 ± 0.1 2.54 0.5 ± 0.1 0° ~ 15° DIP20 3