Motor driver ICs 2-channel reversible motor driver BA6259N The BA6259N incorporates two reversible-motor drivers. @Features +} Two reversible-motor driver circuits are built in. 3) SIP10pin package. 2) Built-in thermal shutdown circuit. @Block diagram ~() Vec2 VR @ a to Liittt Thema] IN Control circuit shutdown cireul IN2 (5 Af ns > Veo @ Absolute maximum ratings (Ta=25C) Parameter Symbol Limits Unit Voor 20 Vv Power supply voltage Vow - v Power dissipation Pd 1000*! mv Operating temperature Topr 20~75 Cc Storage temperature Tstg 50~125 Cc Input voltage Vin 0.2~6 Vv Output current lo 1.0"? A %*1 Reduce power by 10 mW for each dagres above 257C. #2 50ms pulse with a duty ratlo of 1/50 491 wy i ie cs: ie pe fs) Ss Reversible DC Motor Drivers OC Motor Drivers Motor driver ICs BA6259N @ Electrical characteristics (Unless otherwise noted, Ta=25'C and Vec= 12V) Parameter Symbol | Min. | Typ. | Max. | Unit Conditions Operating supply voltage Veet 8 8 V Voc < Voor Vece 8 - 18 V Output reference voltage (pin 8) VR 8 - 18 V Va and Voce are directly connected Current consumption ke 12 24 mA | R=, 4, 5, 6pin; L LOW level input voltage Vit - - 1.0 V 4, 5, Spin. HIGH level input voltage Vin 3.5 ~- - Vv 4, 5, Spin LOW level output voltage (pins 2, 3, 10) Vow _ 0.3 0.5 V lo=0.15A HIGH level output voltage (pins 2, 3,10) } Vou 11.0 | 11.3 _ V Pins 6 and 9 are directly connected, lo = 0.15 A @!nput/ output truth table Input Output 4pin (IN) Bpin (IN) 6pin (IN) | 10pin (OUT) | 2pin (OUT) | 3pin (OUT) L L - OPEN OPEN OPEN H L L H L OPEN H L H L H OPEN L H L H OPEN L L H H L OPEN H H H + L L L H %* HIGH level input is 3.5 V or more LOW level input is 1.0 V or less @Application example Cz, Ca + Capacitors for preventing parasitic oscillation. Though the optimum capacitance depends on such PCB arrangement factors as the power sup- ply circuit, motor characteristics, and conductor foil patterns, a range of 0.01~1 uF is recom- mended. Vee. tov Ca, Cs : Capacitors for preventing parasitic oscillation. Fig.1 ' 1 + oofiena They may or may not be required, depending on the PCB arrangement. A capacitance range of 0.01~10 Fis recommended. 492 Motor driver ICs BA6259N @Conirol pin equivalent circuit 4,5, Goin Fig.2 @ Precautions for use (1} Use the BAG259N with Va (pin 8) short-circuited to Vecz (pin 9}. The Vece potential should be lower than the Vcc: potential. Under these conditions, the IC pro- vides a HIGH level output voltage of 11.3 (typical, Vcc2=12V}, Because a single transistor is used for the . low-side output stage, the LOW level output voltage is further lowered. This results in a wide range of motor drive voltage. , (2) Though the IC input pins can be directly con- nected with MOS output pins, it is recommendable to connect resistors of a few kiloohms to do3en of ki- ioohms between the pins for the sake of pin protec- tion. Vec=5V 10k 4, 5, 6pin 33kQ Fig.3 (3) When reversing the rotational direction of a mo- tor, make sure to go through the brake mode in-be- tween the opposite directions. It is recommendable to keep the brake mode for at least 10 us. (4) Due to the effects of capacitors C2~Cs, the motor that is not being driven could be momentarily driven during mode switching. Check for this problem when designing your application. (5) itis recommendable to arranges your design so that voltage rises at Vcc: prior to Vece when turning on the power, and voltage falls at Veci after Vcc2 when turning off the power. (6) Thermat shutdown circuit When the thermal shutdown circuit is activated, the output is left OPEN. The circuit is activated when the IC junction temperature rises above 170C . The tempera- ture difference between the activation and deactivation settings is about 30C. 493 Ww = v = = s _ fe 2 Se = DC Motor Drivers | | Reversible GC Motor Drivers Motor driver ICs BA6259N @ Electrical characteristic curves 1600 Reduce power by 10 mW for each degras above 25C Paper-phenotic PCB {50 X 50 X 1.2 mm) Is used 1900) g \ ov ou 500 y 4 . 4 . 5 s, 0 50 100 150 AMBIENT TEMPERATURE : Ta (C) Fig.4 Power dissipation curve 12; ~ VoCI17V = Voo2=12V g 15 mS 5 if) 2 = iN E 10.5 o 10.05 2 04 O68 08 1.0 OUTPLIT H CURRENT : lon (A) Fig.7 HIGH level output voltage vs. output current @External dimensions (Units: mm} 12 3 a = Zz 2 & Ww oc a > b 1 2 ff i % + @ 3 4 86 7 INPUT VOLTAGE : VIN () Fig.6 Input voltage vs. input current 2.0 = al 2 15 i : / = 40 / $ J 2 po | a 3 a] 0 02 O04 O86 O88 10 12 OUTPUT L CURRENT : to (A) Fig.8 LOW lavel output voltage vs. output current 25.2+0.2 _ CANTWITL. 3 2.54 ss SIP10 INPUT VOLTAGE : VIN (v) N % BN a nm 1.4 40 ~20 Fig.6 0 AMBIENT TEMPERATURE : Ta (=TI) ('C) 20 40 60 40 Input voltage vs. ambient temperature 100 494