SA5901
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 QFP-
44, 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 component.
∗
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: www.silan.com.cn
REV:1.3
2006.02.27
Page 1 of 24
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