參數(shù)資料
型號: KA3019D2
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 光電元器件
英文描述: 4-CH Motor Driver For CD System(用于CD系統(tǒng)的四通道馬達(dá)驅(qū)動器)
中文描述: 4 CHANNEL CD MOTOR DRIVER, PDSO28
封裝: 0.300 INCH, HSSOP-28
文件頁數(shù): 11/13頁
文件大?。?/td> 298K
代理商: KA3019D2
CD-ROM PRODUCTS
KA3019D2
11
MIC-99D001
January 1999
APPLICATION CIRCUIT 1
(Diffential PWM control mode)
THERMAL SHUT DOWN CIRCUIT
The IC is broken down by the heat when overload condition continues for a long time. So, KA3019D2 has a thermal
shut down circuit to prevent this case. At that time temperature of the IC rises over 175
°
C, the circuit is operating
and protects the IC against breakdown.
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
KA3019D2
SERVO AMP
FOCUS
TRACKING
PWM1
PWM2
FORWARD
REVERSE
CONTROL
(TRAY)
BIAS VOLTAGE
FOCUS, TRACKING MUTE
SLED MUTE
SLED MOTOR
VCC
TRAY MOTOR
5V
5V
TRACKING
ACTUATOR
FOCUS
ACTUATOR
5V
SLED
PWM1
PWM2
B
B
TRAY MUTE
IN1.1
IN1.2
OUT1
IN2.1
IN2.2
OUT2
IN3
IN3
IN3
IN3
IN3
IN3
IN3
IN3
DO1+
DO1
PGND2
DO2+
DO2
VM1, 2
MUTE4
DO3+
DO3
PGND1
VM3, 4
DO4+
DO4
VCC
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