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參數(shù)資料
| 型號： | L9909 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | DC MOTOR DRIVER WITH POSITION CONTROL |
| 中文描述： | 直流電動機驅(qū)動器，帶有位置控制 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 72K |
| 代理商： | L9909 |
DESCRIPTION
Oscillator.
The output current at ROSC pin is mirrored to
COSC pin with a proper direction according to its
voltageslope.
The triangular wave form at COSC pin, being
comparedwith a threshold,defines the PWMduty
cycle at the motor driver outputM+ and M-.
The oscillator also supplies the time base for the
switch off and switch on delays and the Time Out
Counter.
The typicaloscillator periodis:
Tosc= 7.04x Rosc x Cosc
February 2001
150K
150K
OP1
COMP1
+
-
-
+
0 1
0
1
3
1
2
+
-
V
R3
=6.6% Vcc
COMP7
+
switch on
DELAY
V
R7
=
7.5% Vcc
switch off
DELAY
35V
35V
V
R3
=
6.6% Vcc
V
R2
=
56.6% Vcc
COMP2
COMP3
I
I
curr.
I
OSCILLATOR
OP8
+
-
V
R8
=
14.2% Vcc
COMP4
pwm
+
V
R4
= 1.5V
COUNTER
T
RES
TIME OUT
Vcc
Tck
FF
S
R
T
T
Vcc
Tck
Vcc
ROSC
GND
M+
M-
V
R2
=56.6%Vcc
V
R3
=6.6%Vcc
TEMP.
SENSE
Currentratio =1 : 2
V
R5
= 6.6% Vcc
| 5Verr|
curr.
curr.
Vcc
Vcc
Vcc
16V
V
R2
=
56.6% Vcc
V
R3
=
6.6% Vcc
7V
Td_on
Td_pwm
Td_off
10V
open
over
temp.
VOLT.
SENSE
over volt.
over volt.
DELAY1
Td_ov_1
(130
μ
s)
Vcc
open
START
L
Latch
IN
STOP
STOP
DIRECTION
START
PWM
DRIVER
CONTROL
OFF
OFF
over volt.
DELAY2
Td_ov_2
(1ms)
Q
curr.
limit
curr.
limit
BLOCK DIAGRAM
MInidip
ORDERING NUMBER:
L9909
L9909
DC MOTOR DRIVER WITH POSITION CONTROL
1/9
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| L9911F | 功能描述:低壓差穩(wěn)壓器 - LDO Car Alternator Reg Multifunction Volt RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| L9911I | 功能描述:低壓差穩(wěn)壓器 - LDO Car Alternator Reg Multifunction Volt RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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