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PDF AM5868 Data sheet ( Hoja de datos )
| Número de pieza | AM5868 | |
| Descripción | 5-channel BTL Driver | |
| Fabricantes | AMtek | |
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AM5868
Motor Driver ICs
5-channel BTL Driver for DVD player
AM5868
The AM5868 is a five-channel BTL driver IC for driving the motors and actuators such as used in DVD player and
consists of two independent precision voltage comparators. It supports a variety of applications.
z Applications
BTL driver for CD, CD-ROM and DVD.
z Features
1) Two comparators built-in:
Two general-purpose voltage comparators are
built-in.
2) Two channels are voltage-type BTL drivers for
actuators of tracking and focus. Two channels are
voltage-type BTL driver for sled and spindle
motors. It is also built-in one channel bi-direction
DC motor driver for tray.
3) Wide dynamic range [9.0V (typ.) when Vcc1=
Vcc2= 12V, at RL=8Ω load].
4) Separating power of Vcc1 and Vcc2 is to
improve power efficiency by a low supply
voltage for tracking, focus, and spindle.
5) Level shift circuit built-in.
6) Thermal shut down circuit built-in.
7) Mute mode built-in.
8) Dual actuator drivers:
A general purpose input OP provides differential
input for signal addition. The output structure is
two power OPAMPS in bridge configuration.
9) Sled motor driver:
A general purpose input OP provides differential
input for signal addition. The output structure is
one power OPAMP in bridge configuration.
10) Spindle driver:
Single input linear BTL driver. The output
structure are two power OPAMPS in bridge
configuration.
11) Tray in-out driver:
The DC motor driver supports forward/reverse
control for tray motor.
AMtek semiconductors
-0-
May 2003 V0.7
1 page  
AM5868
Motor Driver ICs
z Pin description
PIN No
Pin Name
Function
1
VINFC
Input for focus driver
2
OP2IN-
Comparator 2 input (-)
3
OP2IN+
Comparator 2 input (+)
4
VINSL+
OPAMP input (+) for the sled driver
5
OP2OUT
Comparator 2 output
6
FWD
Tray driver forward input
7
REV
Tray driver reverse input
8
Vcc1
Vcc for pre-drive block and power block of sled and tray
9
VOTR-
Tray driver output (-)
10
VOTR+
Tray driver output (+)
11
VOSL-
Sled driver output (-)
12
VOSL+
Sled driver output (+)
13
VOFC-
Focus driver output (-)
14
VOFC+
Focus driver output (+)
15
VOTK+
Tracking driver output (+)
16
VOTK-
Tracking driver output (-)
17
VOLD+
Spindle driver output (+)
18
VOLD-
Spindle driver output (-)
19
Vcc2
Vcc for power block of spindle, tracking and focus
20
OP1OUT
Comparator 1 output
21
VCTL
Speed control input of tray driver
22
GND
Ground
23
VINLD
Input for spindle driver
24
OP1IN-
Comparator 1 input (-)
25
OP1IN+
Comparator 1 input (+)
26
VINTK
Input for tracking driver
27
BIAS
Input for reference voltage
28
MUTE
Input for mute control
Notes) Symbol of + and – (output of drivers) means polarity to input pin.
(For example, if voltage of pin1 is high, pin14 is high.)
AMtek semiconductors
-0-
May 2003 V0.7
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet AM5868.PDF ] | |
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