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參數(shù)資料
| 型號： | ML4425IS |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | Sensorless BLDC Motor Controller |
| 中文描述： | BRUSHLESS DC MOTOR CONTROLLER, 0.05 A, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 167K |
| 代理商： | ML4425IS |
ML4425
PRODUCT SPECIFICATION
2
REV. 1.0.2 7/2/01
Pin Description
Pin
1
Name
I
SENSE
Function
exceeds 0.2
Motor current sense input. When I
LB, and LC are shut off for a fixed time determined by C
Active low output driver for the phase A high-side switch.
Active low output driver for the phase B high-side switch.
Active low output driver for the phase C high-side switch.
Speed control loop compensation is set by a series resistor and capacitor from
SPEED COMP to GND.
A capacitor from C
T
to GND sets the PWM oscillator frequency.
6.9V reference voltage output.
Speed loop input which ranges from 0 (stopped) to V
Active high output driver for the phase A low-side switch.
Active high output driver for the phase B low-side switch.
Active high output driver for the phase C low-side switch.
Voltage on this pin sets the I
SENSE
threshold voltage at 0.2
unconnected selects an internally set threshold.
This TTL level output corresponds to the signal used to clock the commutation state
machine. The output frequency is proportional to the motor speed when the back-
EMF sensing loop is locked onto the rotor position.
12V power supply input.
A capacitor to GND sets the voltage-to-frequency ratio of the VCO.
SENSE
I
LIMIT,
IOS
the output drivers LA,
.
2
3
4
5
HA
HB
HC
SPEED
COMP
C
T
V
REF
SPEED SET
LA
LB
LC
I
LIMIT
6
8
9
10
11
12
REF
(maximum speed).
I
LIMIT
, leaving this pin
13
VCO/TACH
14
15
V
C
DD
VCO
Pin Configuration
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
ISENSE
HA
HB
HC
SPEED COMP
CT
VREF
SPEED SET
LA
LB
LC
ILIMIT
VCO/TACH
VDD
GND
RREF
CIOS
BRAKE
FB C
FB B
FB A
CRR
SPEED FB
CRT
UV FAULT
CAT
RVCO
CVCO
TOP VIEW
ML4425
28-Pin Narrow PDIP (P28N)
28-Pin SOIC (S28)
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| ML4426 | Bi-directional Sensorless BLDC Motor Controller(雙向無傳感無刷直流電機控制器) |
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| ML4761 | Adjustable Output Low Voltage Boost Regulator(可調(diào)輸出低壓差的升壓穩(wěn)壓器) |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ML4425ISX | 功能描述:開關變換器、穩(wěn)壓器與控制器 BLDC Motor Control Sensorless RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| ML4426 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Bi-directional Sensorless BLDC Motor Controller |
| ML4426 WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| ML4426CH | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Bi-directional Sensorless BLDC Motor Controller |
| ML4426CP | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Bi-directional Sensorless BLDC Motor Controller |
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