Reversible Motor Drivers for Brush Motors 0.5A or Less Reversible Motor Driver (Single Motor) BA6950FS 0.8A Reversible Motor Driver (Single Motor) No.11008ECT01 BA6951FS Description These drivers are reversible motor drivers that can directly drive brush motor which require forward and reverse rotations. Four modes of output setting are available by the use of input logic (2 inputs) forward, reverse, stop (idling), and braking. In addition, since voltage applied to motors varies in accord with the control terminal, motor rotating speed can be optionally set and by the built-in current feedback amplifier, the motor can be driven at a constant speed. Features 1) Four-mode outputs of forward, reverse, stop (idling), and braking are enabled in compliance with two inputs 2) Motors can be driven at a constant speed by a current feedback amplifier 3) Built-in thermal shutdown circuit 4) Built-in current limiting function (BA6951FS) 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 Unit BA6950FS BA6951FS Supply voltage VCC 8 V Supply voltage VB 18 V 1 1 Output current I 0.4* 0.8* A OMAX Operating temperature T -20 ~ 75 OPR Storage temperature T -55 ~ 150 STG 2 Power dissipation Pd 0.813* W Junction temperature T 150 jmax *1 Do not, exceed Pd or ASO. *2 SSOP-A16 package. Mounted on a 70mm x 70mm x 1.6mm FR4 glass-epoxy board with less than 3% copper foil. Derated at 6.4mW/ above 25. Operating conditions (Ta=25) Parameter Symbol Ratings Unit Supply voltage VCC 3 ~ 6 V Supply voltage VB 3 ~ 16 V VTCL voltage V 0 ~ (VCC-1.8) V CTL www.rohm.com 2011.05 - Rev.C 1/10 2011 ROHM Co., Ltd. All rights reserved. Technical Note BA6950FS, BA6951FS Electrical characteristics (BA6950FS, unless otherwise specified, Ta=25 and VCC=4.8V, VB=4.8V) Limits Parameter Symbol Unit Conditions Min. Typ. Max. Supply current 1 I - 4.0 6.0 mA FWD/REV mode, VCTL=0V CC1 Supply current 2 I - 0.7 1.5 mA Standby mode, VCTL=0V CC2 Supply current 3 I - 0 1 A VCC=0V BOFF Input threshold voltage H V 2.0 - VCC V R/F H Input threshold voltage L V 0 - 0.8 V R/F L Input bias current I - 80 135 A FIN=2V, RIN=2V R/F H CTL amplifier offset voltage V -5 0 5 mV VCTL-RC, VCTL=0V, 1V CTLOFS CTL amplifier gain V 40 46 52 A/V I , VCTL=2V, 1V CTLGA RT1 CTL output mirror ratio 1 I 0.85 1.00 1.15 ratio I /I , I =20A CTLR1 RT1 RC RC CTL output mirror ratio 2 I 0.90 1.00 1.10 ratio I /I , I =200A CTLR2 RT1 RC RC CS amplifier offset voltage CS -5 0 5 mV CS1-CS2, CS1=0V, 0.1V OFS CS output mirror ratio 1 I 0.85 1.00 1.15 ratio I /I , I =20A CSR1 RT2 CS2 CS CS output mirror ratio 2 I 0.90 1.00 1.10 ratio I /I , I =200A CSR2 RT2 CS2 CS Output high voltage V 2.0 4.6 - V M1, M2, VCTL=0.2V H Output saturation voltage H V - 0.09 0.3 V I =50mA, RT1=VCC OH O Output saturation voltage L V - 0.07 0.2 V I =50mA, RT1=VCC OL O Electrical characteristics (BA6951FS, unless otherwise specified, Ta=25 and VCC=4.8V, VB=4.8V) Limits Parameter Symbol Unit Conditions Min. Typ. Max. Supply current 1 I - 4.0 6.0 mA FWD/REV mode, VCTL=0V CC1 Supply current 2 I - 0.7 1.5 mA Standby mode, VCTL=0V CC2 Supply current 3 I - 0 1 A VCC=0V BOFF Input threshold voltage H V 2.0 - VCC V R/F H Input threshold voltage L V 0 - 0.8 V R/F L Input bias current I - 80 135 A FIN=2V, RIN=2V R/F H CTL amplifier offset voltage V -5 0 5 mV VCTL-RC, VCTL=0V, 1V CTLOFS CTL amplifier gain V 40 46 52 A/V I , VCTL=2V, 1V CTLGA RT1 CTL output mirror ratio 1 I 0.85 1.00 1.15 ratio I /I , I =20A CTLR1 RT1 RC RC CTL output mirror ratio 2 I 0.90 1.00 1.10 ratio I /I , I =200A CTLR2 RT1 RC RC CS amplifier offset voltage CS -5 0 5 mV ATC-CS, ATC=0V, 0.1V OFS CS output mirror ratio 1 I 0.85 1.00 1.15 ratio I /I , I =20A CSR1 RT2 CS CS CS output mirror ratio 2 I 0.90 1.00 1.10 ratio I /I , I =200A CSR2 RT2 CS CS TL-R offset voltage TL-R 6 18 30 mV TL=0.3V, R =1.0 AOFS AOFS ATC Output high voltage V 1.85 2.20 2.55 V M1, M2, VCTL=1.0V H Output saturation voltage H V - 0.28 0.56 V I =300mA, RT1=VCC OH O Output saturation voltage L V - 0.32 0.64 V I =300mA, RT1=VCC OL O www.rohm.com 2011.05 - Rev.C 2/10 2011 ROHM Co., Ltd. All rights reserved.