參數(shù)資料
型號: KA3082N
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 運(yùn)動(dòng)控制電子
英文描述: Bi-directional DC Motor Driver
中文描述: DISK DRIVE MOTOR CONTROLLER, 1.6 A, PDIP8
封裝: 0.300 INCH, DIP-8
文件頁數(shù): 6/12頁
文件大?。?/td> 90K
代理商: KA3082N
FAN8082 (KA3082N)
6
Application Information
1. THERMAL SHUT DOWN CIRCUIT
When Ta = 25
°
C, Q2 & Q3 are Turned-off and output stage operates normally.
V
1
= I
×
(R1 + R2)
V
2
= R2 / (R1 + R2)
×
V1 = 0.37V
When Ta = 165
°
C, Q2 & Q3 Turn-on and it turns-off the output stage.
0.70V - 0.37V = 330mV (When Q
2
& Q
3
are Turn-on, Vbe
Q2
= Vbe
Q3
= 0.70V)
And temperature coefficient of Q
2
= Q
3
=
2mV /
°
C
T.S.D: 330mV / 2mV = 165
°
C
2. LOGIC INPUT & OUTPUT TABLE
INPUT High is above 2.0V.
INPUT Low is below 0.7V.
*Low : All Power TRs are off-state.
But internal Bias makes output Voltage low state.
Input
Output
Motor
Pin #4
Low
High
Low
High
Pin #5
Low
Low
High
High
Pin #2
*Low
High
Low
*Low
Pin #8
*Low
Low
High
*Low
Brake
Forward
Reverse
Brake
I
V1
V2
Q1
R1
R2
Q2
Q3
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