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 •1)Features High current drive capability of 400mA (Max). 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 20 N.C. IN1 2 19 OUT1 IN2 3 18 OUT2 IN3 4 17 OUT3 IN4 5 16 OUT4 IN5 6 15 OUT5 IN6 7 14 OUT6 IN7 8 13 OUT7 IN8 9 12 OUT8 GND 10 11 VCC 1 Standard ICs BA6212 •Absolute maximum ratings (Ta = 25°C) Parameter Symbol •Internal circuit configuration Limits 11 Unit R1 7.3kΩ Power supply voltage VCC 7 V Power dissipation Pd 1100∗ mW INPUT 2~9 Operating temperature Topr – 25 ~ + 75 °C Storage temperature Tstg – 55 ~ + 125 °C Maximum output current IOUT 400 mA Maximum output voltage VOUT 14 V VIN VCC V Maximum input voltage R5 270Ω Q1 R2 6.6kΩ 1.2kΩ R3 OUT PUT 12 ~ 19 Q3 Q4 Q2 ST R4 30kΩ 1 ∗ Reduced by 11mW for each increase in Ta of 1°C over 25°C. R6 3kΩ GND SUB Fig. 1 •Electrical characteristics (unless otherwise noted, Ta = 25°C, V CC Parameter = 5V) Symbol Min. Typ. Output saturation voltage 1 VOUT 1 — 0.2 0.3 V IOUT = 200mA, VIN = 1V Output saturation voltage 2 VOUT 2 — 0.4 0.6 V IOUT = 400mA, VIN = 1V Max. Unit Conditions Output leakage current 1 IOL 1 — — 100 µA VIN = 3.6V, VOUT = 12V Output leakage current 2 IOL 2 — — 100 µA VIN = 1V, VOUT = 12V, VST = 0.3V Input current IIN — – 0.5 –1 mA VIN = 0V, IOUT = 0mA Input low level voltage VIL — — 1 V — Input high level voltage VIH 3.6 — — V — •Application example + 5V Drive power supply 11 S.T. input Input 1 2 19 3 18 4 17 5 BA6212 16 6 15 7 14 8 13 9 12 10 Fig. 2 2 VCC D1 Load 10 Standard ICs BA6212 •Electrical characteristic curves 500 16 300 200 Ta = 55°C Ta = 75°C 100 0 0 20 40 60 80 OUTPUT VOLTAGE: VOUT (V) 400 INPUT CURRENT: IIN (µA) OUTPUT CURRENT: IOUT (mA / ch) VCC = 5V – 600 VCC = 5V – 400 – 200 0 0 100 2 4 6 INPUT VOLTAGE: VIN (V) DUTY CYCLE: (%) Fig. 4 Input current characteristics Fig. 3 Maximum output current when all channels are ON simultaneously 8 12 8 4 0 0 2 4 6 8 INPUT VOLTAGE: VIN (V) Fig. 5 Input threshold voltage characteristics OUTPUT VOLTAGE: VOUT (V) 10 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 11 1 10 3.05 ± 0.2 0.51Min. 4.05 ± 0.3 6.5 ± 0.3 20 7.62 0.3 ± 0.1 2.54 0.5 ± 0.1 0° ~ 15° DIP20 3