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PDF BA5888 Data sheet ( Hoja de datos )
| Número de pieza | BA5888 | |
| Descripción | 5-Channel BTL Driver | |
| Fabricantes | SL | |
| Logotipo |  |
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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.
FEATURES
* Wide dynamic range (4.0V (Typ.) when VCC = 8V, PVCC =5V,
HSOP-28-375-0.8
and RL = 8 ).
* Level shift circuit on chip.
* Thermal shutdown circuit on chip.
* Mute mode built-in.
* Two regulator controllers built-in.
APPLICATIONS
* Five drivers build-in: dual actuator drivers, sled motor driver,
spindle driver and tray in-out driver.
* CD
* CD-ROM
* DVD
ORDERING INFORMATION
Part No.
SA5888
SA5888TR
SA5888G
SA5888GTR
Package
HSOP-28-375-0.8
Marking
SA5888
SA5888
SA5888G
SA5888G
Material
Pb free
Pb free
Halogen free
Halogen free
Packing Type
Tube
Tape & Reel
Tube
Tape & Reel
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2 2009.07.16
Page 1 of 8
http://www.Datasheet4U.com
1 page  
Pin No.
Pin Name
Description
24 NC No connection
25
TRB_2
Connect to external transistor base
26
VINTK
Tracking driver input
27
BIAS
Bias input
28
MUTE
Mute control
Notes: The indicated polarities for the output pins are means polarity to inputs.
Always ensure that VCC PVCC
FUNCTION DESCRIPTION
Operation notes
1) This IC has a built in thermal shutdown circuit that mutes the output current when the chip temperature
reaches 135°C (typ.). The hysteresis is set to 25 °C (typ.), so the driver circuits start up again when the chip
temperature falls to 120°C (typ.).
2) The driver buffer is switched off when the supply voltage falls below 3.6V (typ.), and is switched back on when
the voltage reaches 3.8V (typ.) again.
3) Bias pin (pin27) should be pulled up to more than 1.2V. In case the bias pin voltage is pulled down below 0.9V
(Typ), the output current is muted.
4) The stand by circuit logic is active low.
5) Mute is applied when the buffer pin voltage falls below 1.0V (typ.). Normally, operate with this pin at1.8V at
least.
6) Connect a bypass capacitor between the bases of the power supply pins of this IC.
7) Tray driver logic input:
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
21pin, and in high level. In this time, the low level voltage input power pipe as the output saturation voltage.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2 2009.07.16
Page 5 of 8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet BA5888.PDF ] | |
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