No Preview Available !
SA5888
5-CH BTL DRIVER FOR DVD PLAYER WITH DISC BIDIRECTIONAL DRIVER
AND TWO VARIABLE REGULATORS
DESCRIPTION
The SA5888 is a five-channel BTL driver IC for driving the motors
and actuators in products such as CD - ROM / DVD drivers. It is also
build-in two independent precision voltage regulators with adjustable
range from 1.5V to 4V and one channel bi-direction DC motor driver
for tray.
www.DataSheet4U.com
FEATURES
* Wide dynamic range (4.0V (Typ.) when VCC = 8V, PVCC =5V,
and RL = 8 ).
* Level shift circuit on chip.
* Thermal shutdown circuit on chip.
* Mute mode built-in.
* Two regulator controllers built-in.
* Five drivers build-in: dual actuator drivers, sled motor driver,
spindle driver and tray in-out driver.
APPLICATIONS
HSOP-28-375-0.8
OR DERING INFORMATION
Device
SA5888
Package
HSOP-28-375-0.8
* CD
* CD-ROM
* DVD
BLOCK DIAGRAM
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1 2006.10.31
Page 1 of 8
SA5888
FWD(pin6)
REV(pin7)
VOTR+(pin10)
VOTR-(pin9)
Function
L
L
OPEN
OPEN
Open mode
L H L H Reverse mode
H L H L Forward mode
H H L L Brake mode
The design of 6,7 pin, consider the driver upper and lower unable ducting at the same time, be sure to do it, the
motor forward and reverse input by the open mode, and the interval of the open mode is more than 10ms.
Output high level voltage VOL+, VOL- ,varied with the motor controller, it can output 3 times voltage of
www.DataSheet4U.c2o1mpin, and in high level. In this time, the low level voltage input power pipe as the output saturation voltage.
ELECTRICAL CHARACTERISTICS CURVES
12
10 VCC=12V
PVCC=5V
8 BIAS=2.5V
6
RL=20
12
8
4
2
0
-2
-4
-6
-8
-10
-12
-2 -1 0 1
INPUT VOLTAGE:VIN (V)
2
Fig 1. Thermal dissipation curve
Fig 2. Driver I/O characteristics (Spindle)
Fig 3. Driver I/O characteristics (sled)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1 2006.10.31
Page 5 of 8