SA5901 Datasheet | Silan Microelectronics

4-CHANNEL MOTOR DRIVER FOR PORTABLE CD PLAYER DESCRIPTION SA5901 is suitable for portable CD player with 4-ch H bridge drivers and DC/DC converter control circuit. Because of the small package QFP44, it is most suitable for small equipment. QFP44-10 x10-0.8 Features ∗ Four channels of H-bridge drivers are contained. ∗ DC/DC converter control circuit is contained. ∗ Reset circuit ∗ Reduced voltage detection circuit. ∗ Battery charging circuit ∗ General purpose operational amplifier is contained ∗ Low power consumption ∗ Thermal shutdown circuit ∗ QFP-44 package <H-bridge driver> ∗ Load drive voltage can be processed by PWM control through an external ponent. ∗ Excellent gain can be obtained by a voltage feedback circuit. ∗ Mute function is disabled for ch1, ch2 and ch3/ch4 respectively. <DC/DC converter control circuit> ∗ Starter and power off function ∗ Soft-start function and short-circuit protection function ∗ Self-advancing oscillation and clock synchronization are available. <Reset circuit> ∗ Reset voltage is interlocked with the set voltage of DC/DC converter. ∗ Inversion output pin for reset output is available. <Reduced voltage detection circuit> ∗ Battery charger and dry battery allow to switch “ Empty” detection level. LQFP44-10 x10-0.8 ORDERING INFORMATION Device SA5901A SA5901L Package QFP44-10 X 10-0.8 LQFP44-10 X 10-0.8 <Battery charging circuit> ∗ Constant current battery charging system allows varying current value through resistance. ∗ It is separated from any other blocks and it can be operated independently. ∗ A charging power transistor is contained. ∗ Independent thermal shutdown circuit is contained. .. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: .silan..cn REV:1.3 2006.02.27 Page 1 of 24 BLOCK DIAGRAM 41 35 34 36 32 31 30 29 28 27 26 25 24 23 Max. Detection 4-ch H Bridge Driver MUTE2 MUTE34 21 19 22 20 17 18 13 15 12 START IN1 System On/Off Pre Amp IN2 IN3...