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PDF SA6392 Data sheet ( Hoja de datos )
| Número de pieza | SA6392 | |
| Descripción | 4CHANNEL BTL DRIVER | |
| Fabricantes | Silan Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SA6392 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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SA6392
4-CHANNEL BTL DRIVER FOR CD PLAYERS
DESCRIPTION
The SA6392 is a monolithic integrated circuit, and suitable for 4-CH
motor driver, It has an internal primary filter, and can be directly
connected to the servo PWM output of all drivers other than the spindle
driver.
FEATURES
* 4-channel BTL driver on a HSOP 28-pin power package, allowing for
application miniaturization.
* PWM input is filtered by the internal primary filter, eliminating the
need for attached resistors and capacitors, thereby helping reduce
the number of components.
ORDERING INFORMATION
Resistor and capacitor time constants can also be changed with
attached components.
* Built in thermal shutdown circuit
Part No.
SA6392
Package
HSOP-28-375-0.8
* Built in mute function
APPLICATION
CD players, CD-ROM drives
BLOCK DIAGRAM
www.DataSheet4U.com
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.2 2004.02.12
Page 1 of 9
1 page  
SA6392
Fig.2
To maintain the HIGH level with forward (or reverse) in-put, the DC voltage generated at point A is:
I1 x R ≈ 2.5V (reverse: - 2.5V)
This is the voltage generated relative VREF. The setting is such that a voltage differential of 5V is generated
between output pins. The time constant is:
RxC = 2.4µ sec
This can be increased by inserting a capacitor between point A (pins 3, 11 and 18) and VREF. The constant
current (Iconst) given in the electrical characteristics refers to I1 and I2 in Fig. 2.
F
R
SW1
SW2
L
L
H
H
H… 2.4V Max.
L… 0.5V Min.
L
H
L
H
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
Fig.3
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(2) CH4 driver (spindle driver)
Pins 23 and 25 are shorted inside the IC. Bias amplitudes are the primary type of inputs assumed. The level
shift circuit converts the pre-stage amplifier output (centered on the bias level and impressed on pins 23 and 25)
to positive and negative amplitudes centered on VREF. The level shift circuit’s output is BTL-output from the
buffer amplifier.
Because of the high input impedance, the IC is designed to accommodate a filter comprising attached resistors
and capacitors.
OPERATION NOTES
(1) The SA6392 has an internal thermal shutdown circuit. Output current is muted when the chip temperature
exceeds 180°C (typically).
(2) The output current can also be muted by lowering the mute pin (pin 15) voltage below 0.5V.
(3) All four driver output channels are muted during thermal shutdown, muting and a drop in bias pin voltage. No
other components are muted.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.2 2004.02.12
Page 5 of 9
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet SA6392.PDF ] | |
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