Reversible Motor Drivers for Brush Motors 1.0A Reversible Motor Drivers (Single Motor) BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y No.11008EBT02 ●Description The reversible motor driver for output 1.0A for 1 motor can set the output modes to four modes, normal, reverse, stop (idling), and braking in accordance with logic input (2 inputs). ●Features 1) Built-in surge absorption diode 2) By built-in power save circuit, current consumption when a motor stops (idles) can be suppressed 3) Output voltage can be optionally set by reference voltage setting pin 4) Built-in thermal shutdown circuit (TSD) ●Applications Audio-visual equipment; PC peripherals; Car audios; Car navigation systems; OA equipments ●Absolute maximum ratings (Ta=25℃, All voltages are with respect to ground) Ratings Parameter Symbol BA6956AN BA6287F BA6285FS BA6285AFP-Y BA6920FP-Y Unit Supply voltage VCC 18 18 18 30 36 V Supply voltage VM 18 18 18 30 36 V Output current IOMAX 1*1 1*1 1*1 1*1 1*1 A Operating temperature TOPR -20 ~ 75 -20 ~ 75 -20 ~ 75 -40 ~ 85 -30 ~ 85 ℃ Storage temperature TSTG -55 ~ 150 -55 ~ 150 -55 ~ 150 -55 ~ 150 -55 ~ 150 ℃ Pd 1.19*2 0.689*3 0.813*4 1.45*5 1.45*5 W Tjmax 150 150 150 150 150 ℃ Power dissipation Junction temperature *1 *2 *3 *4 *5 Do not, exceed Pd or ASO. SIP9 package. Derated at 9.5mW/℃ above 25℃. SOP8 package. Mounted on a 70mm x 70mm x 1.6mm FR4 glass-epoxy board with less than 3% copper foil. Derated at 5.52mW/℃ above 25℃. SSOP-A16 package. Mounted on a 70mm x 70mm x 1.6mm FR4 glass-epoxy board with less than 3% copper foil. Derated at 6.5mW/℃ above 25℃. HSOP25 package. Mounted on a 70mm x 70mm x 1.6mm FR4 glass-epoxy board with less than 3% copper foil. Derated at 11.6mW/℃ above 25℃. ●Operating conditions (Ta=25℃) Parameter Symbol Ratings BA6956AN BA6287F BA6285FS BA6285AFP-Y BA6920FP-Y Unit Supply voltage VCC 6.5 ~ 15 4.5 ~ 15 4.5 ~ 15 4.5 ~ 24 6.5 ~ 34 V Supply voltage VM 6.5 ~ 15 4.5 ~ 15 4.5 ~ 15 4.5 ~ 24 6.5 ~ 34 V VREF voltage VREF < VCC, VM < VCC, VM < VCC, VM < VCC, VM < VCC, VM V www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 1/17 2011.05 - Rev.B Technical Note BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y ●Electrical characteristics (BA6956AN, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V) Limits Parameter Symbol Unit Conditions Min. Typ. Max. Supply current 1 ICC1 - 29 44 mA FWD/REV mode Supply current 2 ICC2 - 56 80 mA Brake mode Supply current 3 ICC3 - 0 15 µA Standby mode Input threshold voltage H VIH 2.0 - VCC V Input threshold voltage L VIL 0 - 0.8 V Input bias current IIH 50 90 131 µA VIN=2V Output saturation voltage VCE - 1.7 2.3 V IO=0.2A, vertically total VREF bias current IREF - 10 25 µA IO=0.2A, VREF=6V ●Electrical characteristics (BA6287F, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V, VREF=9V) Limits Parameter Symbol Unit Conditions Min. Typ. Max. Supply current 1 ICC1 12 24 36 mA FWD/REV mode Supply current 2 ICC2 29 48 67 mA Brake mode Standby current IST - 0 15 µA Standby mode Input threshold voltage H VIH 2.0 - VCC V Input threshold voltage L VIL 0 - 0.8 V Input bias current IIH 45 90 135 µA VIN=2V Output saturation voltage VCE - 1.0 1.5 V IO=0.2A, vertically total VREF bias current IREF 6 12 18 mA IO=0.2A, FWD or REV mode ●Electrical characteristics (BA6285FS, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V, VREF=9V) Limits Parameter Symbol Unit Conditions Min. Typ. Max. Supply current 1 ICC1 12 24 36 mA FWD/REV mode Supply current 2 ICC2 29 48 67 mA Brake mode Standby current IST - 0 15 µA Standby mode Input threshold voltage H VIH 2.0 - VCC V Input threshold voltage L VIL 0 - 0.8 V Input bias current IIH 45 90 135 µA VIN=2V Power save on voltage VPSON 2.0 - VCC V Standby mode Power save off voltage VPSOFF 0 - 0.8 V Operation Output saturation voltage VCE - 1.0 1.5 V IO=0.2A, vertically total VREF bias current IREF 6 12 18 mA www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 2/17 IO=0.2A, FWD or REV mode 2011.05 - Rev.B Technical Note BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y ●Electrical characteristics (BA6285AFP-Y, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V, VREF=9V) Limits Parameter Symbol Unit Conditions Min. Typ. Max. Supply current 1 ICC1 10 20 30 mA FWD/REV mode Supply current 2 ICC2 21 42 63 mA Brake mode Standby current IST - 0 15 µA Standby mode Input threshold voltage H VIH 2.0 - VCC V Input threshold voltage L VIL 0 - 0.8 V Input bias current IIH 40 80 120 µA VIN=2V Power save on voltage VPSON - - 0.8 V Operation Power save off voltage VPSOFF 2.0 - VCC V Standby mode Output saturation voltage VCE - 1.0 1.5 V IO=0.2A, vertically total VREF bias current IREF 9 15 21 mA IO=0.2A, FWD or REV mode ●Electrical characteristics (BA6920FP-Y, unless otherwise specified, Ta=25℃ and VCC=12V, VM=12V) Limits Parameter Symbol Unit Conditions Min. Typ. Max. Supply current 1 ICC1 5 8 12 mA FWD/REV mode Supply current 2 ICC2 3 5 8 mA Brake mode Standby current IST - 0 15 µA Standby mode Input threshold voltage H VIH 3.0 - VCC V Input threshold voltage L VIL 0 - 0.8 V Input bias current IIH 100 200 300 µA VIN=3V Power save on voltage VPSON 2.0 - VCC V Standby mode Power save off voltage VPSOFF - - 0.8 V Operation Output saturation voltage VCE - 2.2 3.3 V IO=0.2A, vertically total VREF bias current IREF - 12 35 µA IO=0.1A, VREF=6V www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 3/17 2011.05 - Rev.B Technical Note BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y ●Electrical characteristic curves (Reference data) 35 30 -20°C 25°C 75°C 25 20 30 70 60 -20°C 25°C 75°C 50 40 6 9 12 6 9 15 4 -20°C 25°C 75°C 45 12 -20°C 25°C 75°C 30 25 6 9 Supply Voltage: Vcc [V] 12 6 20 15 60 50 40 30 24 8 Supply Voltage: Vcc [V] 12 16 20 4 6 24 12 Fig.8 Supply current 2 (brake) (BA6285AFP-Y) 8 6 -30°C 25°C 85°C 4 36 Supply Voltage: Vcc [V] Fig.10 Supply current 2 (brake) (BA6920FP-Y) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 30 36 9.0 75°C 25°C -20°C 8.0 7.5 7.0 30 24 Fig.9 Supply current 1 (forward) (BA6920FP-Y) Output High Voltage: VOH [V] _ Output High Voltage: VOH [V] _ 10 18 Supply Voltage: Vcc [V] 8.5 24 6 Supply Voltage: Vcc [V] 12 18 -30°C 25°C 85°C 2 4 Fig.7 Supply current 1 (forward) (BA6285AFP-Y) 15 8 -40°C 25°C 85°C 20 20 12 Fig.6 Supply current 2 (brake) (BA6285FS) Circuit Current: Icc1 [mA] _ 25 12 9 Supply Voltage: Vcc [V] Fig.5 Supply current 1 (forward) (BA6285FS) Circuit Current: Icc2 [mA] _ 30 6 -25°C 25°C 75°C 45 Supply Voltage: Vcc [V] -40°C 25°C 85°C 16 50 15 70 12 55 40 16 35 16 60 35 Fig.4 Supply current 2 (brake) (BA6287F) 12 Fig.3 Supply current 1 (forward) (BA6287F) 20 8 8 Supply Voltage: Vcc [V] Supply Current: Icc2 [mA]_ 50 Circuit Current: Icc1 [mA] _ Supply Current: Icc2 [mA]_ 55 40 Circuit Current: Icc1 [mA] _ 12 40 4 -20°C 25°C 75°C 15 Fig.2 Supply current 2 (brake) (BA6956AN) 60 8 20 Supply Voltage: Vcc [V] Fig.1 Supply current 1 (forward) (BA6956AN) 4 25 10 15 Supply Voltage: Vcc [V] Circuit Current: Icc2 [mA] _ Circuit Current: Icc1 [mA] _ 80 Circuit Current: Icc2 [mA] _ Supply Current: Icc1 [mA]_ 40 75°C 25°C -20°C 8.5 8.0 7.5 0 0.2 0.4 0.6 0.8 1 Output Current: Iout [A] Fig.11 Output high voltage (BA6956AN) 4/17 0 0.2 0.4 0.6 0.8 1 Output Current: Iout [A] Fig.12 Output high voltage (BA6287F) 2011.05 - Rev.B Technical Note BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y ●Electrical characteristic curves (Reference data) - Continued 9.0 9.0 8.5 8.0 7.5 85°C 25°C -40°C 8.5 8.0 7.5 0 0.2 0.4 0.6 0.8 1 0.2 0.6 0.8 0.6 0.4 0.2 0.0 0 0.8 0.6 0.4 75°C 25°C -20°C 0.2 Fig.16 Output low voltage (BA6956AN) 0.2 0.4 0.6 0.8 0.2 0.0 0 0.2 0.8 0.8 1 Fig.18 Output low voltage (BA6285FS) 1.5 i) Package only i) 1.19W 1.0 0.9 0.6 0.5 85°C 25°C -30°C 0.3 0.0 0 0.2 Output Current: Iout [A] 0.4 0.6 0.8 1 0 25 Output Current: Iout [A] Fig.19 Output low voltage (BA6285AFP-Y) 50 75 100 125 150 AMBIENT TEMPERATURE [°C] Fig.20 Output low voltage (BA6920FP-Y) Fig.21 Thermal derating curve (SIP9) 1.5 3 ii) Mounted on ROHM standard PCB ii) Mounted on ROHM standard PCB ii) Mounted on ROHM standard PCB (70mm x 70mm x 1.6mm FR4 glas s-epox y board) (70mm x 70mm x 1.6mm FR4 glass -epox y board) (70mm x 70mm x 1.6mm FR4 glas s -epoxy board) i) Package only i) Package only 1.0 0.6 1.2 1 1.5 0.4 Output Current: Iout [A] 0.0 0.6 75°C 25°C -20°C 0.2 Pd [W] Output Low Voltage: VOL [V]_ 0.4 0.4 0.4 Fig.17 Output low voltage (BA6287F) 0.6 0.2 0.6 1 1.5 0.8 1 0.8 Output Current: Iout [A] 85°C 25°C -40°C 0.8 0.0 0 1.0 0.6 Fig.15 Output high voltage (BA6920FP-Y) 0.8 1 0.4 1.0 Output Current: Iout [A] 0 0.2 Output Current: Iout [A] 0.0 0.6 7.5 1 Output Low Voltage: VOL [V]_ 0.8 Output Low Voltage: VOL [V]_ Output Low Voltage: VOL [V]_ 0.4 1.0 75°C 25°C -20°C 0.4 8.0 Fig.14 Output high voltage (BA6285AFP-Y) 1.0 0.2 8.5 Output Current: Iout [A] Fig.13 Output high voltage (BA6285FS) 0 85°C 25°C -30°C 7.0 0 Output Current: Iout [A] Output Low Voltage: VOL [V]_ Output High Voltage: VOH [V] _ 75°C 25°C -20°C Output High Voltage: VOH [V] _ Output High Voltage: VOH [V] _ 9.0 i) Package only 1.0 2 ii) 0.689W 0.5 Pd [W] Pd [W] Pd [W] ii) 0.813W 0.5 1 i) 0.625W i) 0.563W ii)1.45W i)0.85W 0.0 0.0 0 25 50 75 100 125 150 0 0 25 50 75 100 125 150 0 25 50 75 100 125 150 AMBIENT TEMPERATURE [°C] AMBIENT TEMPERATURE [°C] AMBIENT TEMPERATURE [°C] Fig.22 Thermal derating curve (SOP8) Fig.23 Thermal derating curve (SSOP-A16) Fig.24 Thermal derating curve (HSOP25) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 5/17 2011.05 - Rev.B Technical Note BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y ●Block diagram and pin configuration BA6956AN VM R1 5 VCC TSD FIN 6 C1 7 CTRL VCC RIN R2 VREF 9 1 R3 3 8 4 2 OUT1 GND RNF OUT2 M C2 C3 Fig.25 BA6956AN Table 1 BA6956AN 3 RNF Power ground 4 OUT1 Driver output 5 VM Power supply (driver stage) 6 VCC Power supply (small signal) 7 FIN Control input (forward) 8 GND GND 9 RIN Control input (reverse) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. RIN Driver output FIN OUT2 GND 2 VM Reference voltage setting pin VCC VREF RNF 1 OUT1 Function OUT2 Name VREF Pin Fig.26 BA6956AN (SIP9) 6/17 2011.05 - Rev.B Technical Note BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y ●Block diagram and pin configuration BA6287F VCC R1 VM VCC 2 R2 3 C1 TSD FIN RIN 6 VREF ZD 4 CTRL 5 8 1 GND 7 OUT1 OUT2 M C2 C3 Fig.27 BA6287F Table 2 BA6287F Pin Name Function 1 OUT1 2 VM Power supply (driver stage) 3 VCC Power supply (small signal) 4 FIN Control input (forward) 5 RIN Control input (reverse) 6 VREF Reference voltage setting pin 7 OUT2 Driver output 8 GND GND Driver output www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. OUT1 GND VM OUT2 VCC VREF FIN RIN Fig.28 BA6287F (SOP8) 7/17 2011.05 - Rev.B Technical Note BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y ●Block diagram and pin configuration BA6285FS VCC R1 VM VCC 4 R2 TSD 5 C1 12 FIN ZD 6 RIN 11 SAVE POWER VREF CTRL 8 16 1 3 14 OUT1 GND RNF OUT2 M C2 C3 Fig.29 BA6285FS Table 3 BA6285FS Pin Name 1 GND Function GND 2 NC 3 OUT1 NC 4 VM Power supply (driver stage) 5 VCC Power supply (small signal) 6 FIN Control input (forward) 7 NC NC 8 PS Power save enable pin 9 NC NC 10 NC NC 11 RIN Control input (reverse) 12 VREF 13 NC 14 OUT2 15 NC NC 16 RNF Power ground Driver output GND NC OUT1 VM VCC FIN NC PS RNF NC OUT2 NC VREF RIN NC NC Fig.30 BA6285FS (SSOP-A16) Reference voltage setting pin NC Driver output www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 8/17 2011.05 - Rev.B Technical Note BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y ●Block diagram and pin configuration BA6285AFP-Y VCC R1 VM VCC 16 R2 TSD 17 C1 21 VREF ZD FIN 18 RIN 20 CTRL POWER 19 SAVE 6 FIN 7 8 9 GND 5 OUT1 GND RNF OUT2 M C2 C3 Fig.31 BA6285AFP-Y Table 4 BA6285AFP-Y Pin Name Function 1 NC NC 2 NC NC 3 NC NC 4 NC NC 5 OUT2 Driver output 6 RNF Power ground 7 GND GND 8 GND GND 9 OUT1 Driver output 10 NC NC 11 NC NC 12 NC NC 13 NC NC 14 NC NC 15 NC NC 16 VM Power supply (driver stage) 17 VCC Power supply (small signal) 18 FIN Control input (forward) 19 PS Power save enable pin 20 RIN Control input (reverse) 21 VREF 22 NC NC 23 NC NC 24 NC NC 25 NC NC FIN GND NC NC NC NC OUT2 RNF GND GND GND OUT1 NC NC NC NC NC NC NC NC VREF RIN GND PS FIN VCC VM NC NC Fig.32 BA6285AFP-Y (HSOP25) Reference voltage setting pin GND www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 9/17 2011.05 - Rev.B Technical Note BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y ●Block diagram and pin configuration BA6920FP-Y 16 TSD 17 VM R1 VCC C1 FIN 18 R2 RIN 20 CTRL 21 VREF R3 POWER 19 SAVE 6 FIN 8 9 GND 5 OUT1 RNF OUT2 M C2 C3 Fig.33 BA6920FP-Y Table 5 BA6920FP-Y Pin Name 1 NC NC Function 2 NC NC 3 NC NC 4 NC NC 5 OUT2 Driver output 6 RNF Power ground 7 NC NC 8 GND GND 9 OUT1 Driver output 10 NC NC 11 NC NC 12 NC NC 13 NC NC 14 NC NC 15 NC NC 16 VM Power supply (driver stage) 17 VCC Power supply (small signal) 18 FIN Control input (forward) 19 PS Power save enable pin 20 RIN 21 VREF 22 NC NC 23 NC NC 24 NC NC 25 NC NC FIN GND NC NC NC NC OUT2 RNF GND NC GND OUT1 NC NC NC NC NC NC NC NC VREF RIN GND PS FIN VCC VM NC NC Fig.34 BA6920FP-Y (HSOP25) Control input (reverse) Reference voltage setting pin GND www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 10/17 2011.05 - Rev.B BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y Technical Note ●External application components 1) Resistor for the current limitation, R1 This is a current limiting resistor for collector loss reduction and at the time of short-circuited output. It depends on the power supply voltage used, etc., but choose resistance of about 5 to 10Ω. In addition, set resistance with utmost care to voltage drop caused by inrush current that flows when the motor is started. 2) Resistors and zener diode for the output high voltage setting, R2, R3 and ZD These are the resistors and zener diode used when output high voltage is set. As for the voltage, only ( VSAT + VF ) lower than the VREF pin voltage for BA6287F, BA6285FS and BA6285AFP-Y. (Reference values; VSAT ≈ 0.25V, VF ≈ 0.75V) Zener diode ZD is recommended to be used instead of resistor R3 when the power supply voltage is unstable for BA6956AN and BA6920FP-Y. 3) Stabilization capacitor for the power supply line, C1 Please connect the capacitor of 1μF to 100μF for the stabilization of the power supply line, and confirm the motor operation. 4) Phase compensating capacitor, C2, C3 Noise is generated in output pins or oscillation results in accord with the set mounting state such as power supply circuit, motor characteristics, PCB pattern artwork, etc. As noise oscillation measures, connect 0.01μF to 0.1μF capacitors. ●Functional descriptions 1) Operation modes Table 6 Logic table IN1 IN2 OUT1 OUT2 Operation L L OPEN* OPEN* Stop (idling) H L H L Forward (OUT1 > OUT2) L H L H Reverse (OUT1 < OUT2) H H L L Brake (stop) * OPEN is the off state of all output transistors. Please note that this is the state of the connected diodes, which differs from that of the mechanical relay. ** Output OUT1 and OUT2 become OPEN regardless of the input logic of FIN and RIN when switching to the power save mode with the POWERSAVE pin. a) Stand-by mode In stand-by mode, all output power transistors are turned off, and the motor output goes to high impedance. b) Forward mode This operating mode is defined as the forward rotation of the motor when the OUT1 pin is high and OUT2 pin is low. When the motor is connected between the OUT1 and OUT2 pins, the current flows from OUT1 to OUT2. c) Reverse mode This operating mode is defined as the reverse rotation of the motor when the OUT1 pin is low and OUT2 pin is high. When the motor is connected between the OUT1 and OUT2 pins, the current flows from OUT2 to OUT1. d) Brake mode This operating mode is used to quickly stop the motor (short circuit brake). Note) Switching of rotating direction (FWD/REV) When the rotating direction is changed over by the motor rotating condition, switch the direction after the motor is temporarily brought to the BRAKE condition or OPEN condition. It is recommended to keep the relevant conditions as follows: via BRAKE: Longer than braking time*. (* the time required for the output L terminal to achieve potential below GND when brake is activated.) via OPEN: The time longer than 1 ms is recommended. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 11/17 2011.05 - Rev.B Technical Note BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y 2) Output high voltage setting This function optionally sets output voltage by the output high voltage setting pin and controls the motor rotating speed. However, when the output high voltage is set to a low level, consumption at IC increases. Carry out thermal design with sufficient margin incorporated with the power dissipation (Pd) under the actual application condition taken into account. a) BA6287F, BA6285FS, BA6285AFP-Y VM The circuit diagram associated with the output high voltage setting VREF pin is as per shown on the right. The output high and low voltages VOH and VOL are expressed by: VREF Q1 Q2 VOH = VREF - ( VSAT(Q1) + VF(Q2) ) VOL = VSAT(Q3) (Reference values; VSAT ≈ 0.15V, VF ≈ 0.7V) OUT Q3 In addition, the relation of VREF voltage to output voltage is expressed by: RNF (GND, BA6287F) ( VSAT(Q1) + VF(Q2) ) < VREF < VM - VSAT(Q2) + VF(Q2) + VSAT(Q1) Fig.35 BA6287F, BD6285FS, BA6285AFP-Y Therefore, when the VREF voltage condition is as follows, the output high voltage is restricted. VREF > VM - VSAT(Q2) + VSAT(Q1) + VF(Q2) VOH = VM - VSAT(Q2) b) BA6956AN, BA6920FP-Y VM VM VCC The circuit diagram associated with the output high voltage setting VREF pin is as per shown on the right. The output high and low voltages VOH and VOL are expressed by: VOH = VREF + ( VF(Q5) + VF(Q4) ) - ( VF(Q2) + VF(Q3) ) VOH ≈ VREF VOL = VSAT(Q6) (BA6956AN) VOL = VSAT(Q7) + VF(Q6) (BA6920FP-Y) (Reference values; VSAT ≈ 0.15V, VF ≈ 0.7V) The output high voltage controllable range is expressed by: Q1 VCC Q1 Q2 Q4 Q2 Q4 Q3 Q3 OUT VREF VREF Q5 Q6 Q7 Q6 RNF Fig.36 BA6956AN OUT Q5 RNF Fig.37 BA6920FP-Y VREF < VCC - VSAT(Q1) - VF(Q4) - VF(Q5) VREF < VM - ( VSAT(Q2) + VF(Q3) ) + ( VF(Q2) + VF(Q3)) - ( VF(Q4) + VF(Q5) ) (BA6956AN) VREF < VM - VSAT(Q3) + ( VF(Q2) + VF(Q3)) - ( VF(Q4) + VF(Q5) ) (BA6920FP-Y) When the VREF voltage condition is as follows, the output high voltage is restricted. VREF > VCC - VSAT(Q1) - VF(Q4) - VF(Q5) VREF > VM - ( VSAT(Q2) + VF(Q3) ) + ( VF(Q2) + VF(Q3)) - ( VF(Q4) + VF(Q5) ) (BA6956AN) VREF > VM - VSAT(Q3) + ( VF(Q2) + VF(Q3)) - ( VF(Q4) + VF(Q5) ) (BA6920FP-Y) VOH = VCC - VSAT(Q1) - VF(Q2) - VF(Q3) VOH = VM - VSAT(Q2) - VF(Q3) (BA6956AN) VOH = VM - VSAT(Q3) (BA6920FP-Y) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 12/17 2011.05 - Rev.B Technical Note BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y ●Interfaces POWER SAVE FIN RIN (BA6285FS, BA6285AFP-Y, BA6920FP-Y) Fig. 38 FIN, RIN Fig.39 POWER SAVE VM VM VM VCC VCC VREF OUT1 OUT2 OUT1 OUT2 OUT1 OUT2 VREF VREF RNF (BA6956AN) RNF (GND, BA6287F) (BA6287F, BA6285FS, BA6285AFP-Y) Fig. 40 www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. RNF (BA6920FP-Y) VCC, VM, OUT1, OUT2, VREF, RNF, GND 13/17 2011.05 - Rev.B BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y Technical Note ●Notes for use 1) Absolute maximum ratings Devices may be destroyed when supply voltage or operating temperature exceeds the absolute maximum rating. Because the cause of this damage cannot be identified as, for example, a short circuit or an open circuit, it is important to consider circuit protection measures – such as adding fuses – if any value in excess of absolute maximum ratings is to be implemented. 2) Connecting the power supply connector backward Connecting the power supply in reverse polarity can damage the IC. Take precautions against reverse polarity when connecting the power supply lines, such as adding an external direction diode. 3) Power supply lines Return current generated by the motor’s Back-EMF requires countermeasures, such as providing a return current path by inserting capacitors across the power supply and GND (10µF, ceramic capacitor is recommended). In this case, it is important to conclusively confirm that none of the negative effects sometimes seen with electrolytic capacitors – including a capacitance drop at low temperatures - occurs. Also, the connected power supply must have sufficient current absorbing capability. Otherwise, the regenerated current will increase voltage on the power supply line, which may in turn cause problems with the product, including peripheral circuits exceeding the absolute maximum rating. To help protect against damage or degradation, physical safety measures should be taken, such as providing a voltage clamping diode across the power supply and GND. 4) Electrical potential at GND Keep the GND terminal potential to the minimum potential under any operating condition. In addition, check to determine whether there is any terminal that provides voltage below GND, including the voltage during transient phenomena. When both a small signal GND and high current GND are present, single-point grounding (at the set’s reference point) is recommended, in order to separate the small signal and high current GND, and to ensure that voltage changes due to the wiring resistance and high current do not affect the voltage at the small signal GND. In the same way, care must be taken to avoid changes in the GND wire pattern in any external connected component. 5) Thermal design Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) under actual operating conditions. 6) ASO - Area of Safety Operation When using the IC, set the output transistor so that it does not exceed absolute maximum ratings or ASO. 7) Inter-pin shorts and mounting errors Use caution when positioning the IC for mounting on printed circuit boards. The IC may be damaged if there is any connection error, or if pins are shorted together. 8) Operation in strong electromagnetic fields Using this product in strong electromagnetic fields may cause IC malfunctions. Use extreme caution with electromagnetic fields. 9) Built-in thermal shutdown (TSD) circuit The TSD circuit is designed only to shut the IC off to prevent thermal runaway. It is not designed to protect the IC or guarantee its operation in the presence of extreme heat. Do not continue to use the IC after the TSD circuit is activated, and do not operate the IC in an environment where activation of the circuit is assumed. 10) Capacitor between output and GND In the event a large capacitor is connected between the output and GND, if VCC and VIN are short-circuited with 0V or GND for any reason, the current charged in the capacitor flows into the output and may destroy the IC. Use a capacitor smaller than 0.47μF between output and GND. 11) Testing on application boards When testing the IC on an application board, connecting a capacitor to a low impedance pin subjects the IC to stress. Therefore, always discharge capacitors after each process or step. Always turn the IC's power supply off before connecting it to or removing it from the test setup during the inspection process. Ground the IC during assembly steps as an antistatic measure. Use similar precaution when transporting or storing the IC. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 14/17 2011.05 - Rev.B Technical Note BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y 12) Regarding the input pin of the IC This monolithic IC contains P+ isolation and P substrate layers between adjacent elements, in order to keep them isolated. P-N junctions are formed at the intersection of these P layers with the N layers of other elements, creating a parasitic diode or transistor. For example, the relation between each potential is as follows: When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode. When GND > Pin B, the P-N junction operates as a parasitic transistor. Parasitic diodes inevitably occur in the structure of the IC. The operation of parasitic diodes can result in mutual interference among circuits, as well as operating malfunctions and physical damage. Therefore, do not use methods by which parasitic diodes operate, such as applying a voltage lower than the GND (P substrate) voltage to an input pin. Resistor Transistor (NPN) Pin A Pin B C Pin B B E Pin A B N P+ N P+ P N Parasitic element N P+ Parasitic element N E P substrate Parasitic Parasitic element GND Appendix: Example of monolithic IC structure www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. P+ P P substrate GND C N 15/17 GND GND element Other adjacent elements 2011.05 - Rev.B Technical Note BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y ●Ordering part number B 6 A Part No. 2 8 5 A F Part No. 6956A 6287 6285 6285A 6920 P - Y Package N : SIP9 F : SOP8 FS : SSOP-A16 FP-Y : HSOP25 E 2 Packaging and forming specification E2: Embossed tape and reel None: Tube SIP9 <Tape and Reel information> 2.8±0.2 Tube Quantity 1000pcs Direction of feed Direction of products is fixed in a container tube 1.2 3.5±0.5 10.5±0.5 5.8±0.2 21.8±0.2 Container 1 9 2.54 0.6 0.3±0.1 0.8 1.3 ∗ Order quantity needs to be multiple of the minimum quantity. SOP8 <Tape and Reel information> 7 5 6 +6° 4° −4° 6.2±0.3 4.4±0.2 0.3MIN 8 1 2 3 0.9±0.15 5.0±0.2 (MAX 5.35 include BURR) Tape Embossed carrier tape Quantity 2500pcs Direction of feed E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 4 0.595 1.5±0.1 +0.1 0.17 -0.05 S S 0.11 0.1 1.27 1pin 0.42±0.1 Reel (Unit : mm) Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. SSOP-A16 <Tape and Reel information> 6.6 ± 0.2 (MAX 6.95 include BURR) Tape Embossed carrier tape Quantity 2500pcs 9 Direction of feed 0.3MIN 4.4±0.2 6.2±0.3 16 15 14 13 12 11 10 1 2 3 4 5 6 7 E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 8 0.11 1.5±0.1 0.15 ± 0.1 0.8 0.1 0.36 ± 0.1 1pin Reel (Unit : mm) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 16/17 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 2011.05 - Rev.B BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y Technical Note HSOP25 <Tape and Reel information> 13.6 ± 0.2 (MAX 13.95 include BURR) 2.75 ± 0.1 0.3Min. 7.8 ± 0.3 1 13 2000pcs Direction of feed E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 0.25 ± 0.1 1.95 ± 0.1 S 0.11 1.9 ± 0.1 Embossed carrier tape Quantity 14 5.4 ± 0.2 25 Tape 0.1 S 0.8 0.36 ± 0.1 12.0 ± 0.2 1pin Reel (Unit : mm) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 17/17 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 2011.05 - Rev.B Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. 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If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. R1120A