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PDF AM5766 Data sheet ( Hoja de datos )
| Número de pieza | AM5766 | |
| Descripción | 5-channel BTL Driver | |
| Fabricantes | Amtek Semiconductors | |
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AM5766
Motor Driver ICs
5-channel BTL Driver for DVD player
AM5766
The AM5766 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 regulators with adjustable range from 1.25V to 4 V. Further, a free
comparator is provided for spindle motor back emf detection. It supports a variety of applications. Also, Pb free
package is selectable (Please refer to Marking Identification).
Applications
BTL driver for CD, CD-ROM and DVD.
Features
1) 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.
2) Wide dynamic range [9.0V (typ.) when Vcc1=
Vcc2= 12V, at RL= 20Ω load].
3) Separating power of Vcc1 and Vcc2 is to
improve power efficiency by a low supply
voltage for tracking, focus, and spindle.
4) Level shift circuit built-in.
5) Thermal shut down circuit built-in.
6) Mute mode built-in.
7) Dual actuator drivers:
A general purpose input OP provides differential
input for signal addition. The output structure is
two power OPAMPS in bridge configuration.
8) Sled motor driver:
A general purpose input OP provides differential
input for signal addition. The output structure is
one power OPAMP in bridge configuration.
8) Spindle driver:
Single input linear BTL driver. The output
structure are two power OPAMPS in bridge
configuration.
10) Tray in-out driver:
The DC motor driver supports forward/reverse
control for tray motor.
11) 2 Built-in regulator controllers
Adjustable range 1.25V ~ 4V
12) A free comparator
For spindle motor back emf detection
AMtek SEMICONDUCTORS
-1-
Aug 2012 V1.6
1 page  
AM5766
Motor Driver ICs
Pin description
PIN No
Pin Name
Function
1
VINFC
Input for focus driver
2
TRB_1
Connect to external transistor base
3
REGO2
Regulator voltage output, connect to external transistor collector
4
VINSL+
Input for the sled driver
5
REGO1
Regulator voltage output, connect to external transistor collector
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
OPIN
Comparator input
21
VCTL
Speed control input of tray driver
22
GND
Ground
23
VINLD
Input for spindle driver
24
OPOUT
Comparator output
25
TRB_2
Connect to external transistor base
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
-5-
Aug 2012 V1.6
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AM5766.PDF ] | |
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