EEWORLDEEWORLDEEWORLD

Part Number

Search

8932-A

Description
voice-coil motor driver
File Size162KB,8 Pages
ManufacturerAll Sensors
Download Datasheet View All

8932-A Overview

voice-coil motor driver

8932-A
RET REF
V
FLT
V
BEMF
GROUND
UV
SET
R
OUT P
OUT
SWITCH
IN
N
OUT
SW
RETRACT
FAULT
MP
RESET
SIGNAL
SUPPLY
1
2
3
4
5
6
7
8
28
27
RET SET
V
SENS
V
LOAD
V
SENS FB
SGND
N
OUT
P
LOAD
SUPPLY
OUT
N
SGND
P
ACT
FB
PWR OFF
H GAIN
REFERENCE
ACT
VOICE-COIL MOTOR DRIVER
Providing control and drive of the voice-coil motor used for head
positioning in 5 V disk drive applications, the second-generation
A8932CLWA is a full-bridge driver that can be configured so that its
output current is a direct function of an externally applied control
voltage or current. This linear current control function is supplemented
by additional circuitry to protect the heads and the data disk during
system failure or normal system shutdown.
The two
±500
mA MOS driver outputs provide very low saturation
voltage and minimal power dissipation. Additional headroom is
achieved by the sense-FET structure eliminating the need for an exter-
nal current-sense resistor. Internal circuitry can be configured to
provide closed-loop velocity control of the actuator by utilizing the
generated back-EMF of the voice-coil motor. Thermal protection and
under-voltage lockout disables the system in a controlled sequence if a
fault condition occurs.
Data Sheet
26300.2A†
PROTECT
CIRCUIT
26
+
25
24
23
V
DD
22
21
9
10
11
12
13
14
+
V
REF
2V
+
20
19
18
17
PROTECT
CIRCUIT
+
16
15
V
CC
FEATURES
I
I
I
I
I
I
I
I
I
I
I
Class-B, 2
r
DS(on)
at 500 mA Output
Lossless Current Sensing
Zero Current-Loop Deadband
High Transconductance Bandwidth
User-Adjustable Transconductance Gain
Digital Transconductance Gain Switch (4:1 Ratio)
5 Volt Monitor with Selectable UV Trip Point
Retract Circuitry Functional to 0 Volts
Sleep Mode Function
Internal Back-EMF Velocity Loop Option
Internal Thermal Shutdown Circuitry
Dwg. PP-042B
ABSOLUTE MAXIMUM RATINGS
Supply Voltages, V
CC
and V
DD
............
6.0 V
Output Current, I
OUT
(peak) ...........
±600
mA
(continuous) ...........................
±500
mA
Analog Input Voltage Range,
V
IN
....................................
-0.3 V to V
CC
Logic Input Voltage Range,
V
IN
...............................
-0.3 V to +6.0 V
Package Power Dissipation,
P
D
.........................................
See Graph
Operating Temperature Range,
T
A
.....................................
0
°
C to +70
°
C
Junction Temperature, T
J
...............
+150
°
C
Storage Temperature Range,
T
S
................................ -55
°
C to +150
°
C
† Fault conditions that produce excessive junction
temperature will activate device thermal shutdown
circuitry. These conditions can be tolerated, but
should be avoided.
Output current rating may be restricted to a value
determined by system concerns and factors.
These include: system duty cycle and timing,
ambient temperature, and use of any heatsinking
and/or forced cooling. For reliable operation the
specified maximum junction temperature should
not be exceeded.
Always order by complete part number, e.g.,
A8932CLWA
.
My [Low Power Clock] is finally completed~~~~The function is simple, the focus is on learning [[Post a Work]]
Haha, I've been putting it off for almost a week, and today I can finally show it to peopleThe functions are relatively simple, with only hours, minutes, seconds, and date display and settings. The ti...
anqi90 Microcontroller MCU
Microchip Expands 20-Pin PIC Microcontroller Family
Microchip Technology Inc. (NASDAQ: MCHP) today announced two new 20-pin PIC? microcontrollers, further strengthening its 8-bit microcontroller family.The PIC16F631 provides a cost-effective solution f...
rain Microchip MCU
【Reprint】A collection of Allegro usage tips
ps: I am a porter. I saw some of his answers to other people's questions on his website. I moved them here for everyone to see. Have you ever encountered the same problem? Or let's see how to solve th...
okhxyyo PCB Design
【MicroPython Tutorial】——by zy459994202
[size=4][url=home.php?mod=space&uid=537848]@zy459994202[/url] [/size] [size=4][url=https://bbs.eeworld.com.cn/thread-643742-1-1.html][micropython tutorial] Play with Web server[/url][/size] [url=https...
okhxyyo MicroPython Open Source section
Help, after setting the swim port of stm8 to a normal IO port, it can no longer be connected. How can I change it back?
[table=98%] [tr][td][float=right] [/float] Help, after setting the swim port of stm8 to a normal IO port, it can no longer be connected. How can I change it back? I wrote this code in IAR CFG->GCR |= ...
icerains stm32/stm8
Does anyone know which company this flash particle is from?
[img]file:///D:\Documents\Tencent Files\1527311334\Image\C2C\B6D7B8468FB7AAD6BED06AB375A30965.jpg[/img] Does anyone know which company the particles above are from?...
killingspring Power technology

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1478  1913  1147  2782  165  30  39  24  57  4 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号