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参数资料
| 型号： | LB1889M |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 1.3 A, PDSO36 |
| 封装： | MFP-36 |
| 文件页数： | 8/13页 |
| 文件大小： | 198K |
| 代理商： | LB1889M |
Control Function & Current Limit Function
Pin Functions
The pin number in ( ) is for MFP, that in < > is for DIP, and other than these is for QFP.
Pin name
Pin No.
Function
FR
1 (33) <26>
Forward/reverse select pin. The pin voltage selects forward/reverse. (Vth = 2.5 V typ at
VCC =5V)
GND
2 (34) <27>
GND for other than output transistor. Minimum potential of output transistor is at Rf pin.
FGin (–)
5 (3) <28>
Input pin when FG amplifier is used with inverted input. Feedback resistor is connected
between this pin and FG-OUT.
FGin (+)
6 (4) <1>
Noninverting input pin when FG amplifier is used with differential input. Internal bias is
not applied.
FG-OUT
8 (5) <3>
FG amplifier output pin. Resistive load provided internally.
CTL
9 (6) <4>
Speed control pin. Control is exercised by constant-current drive with current feedback
applied from Rf. Gm = 0.65 A/V & 1.50 A/V typ at Rf = 0.5
CTLREF
10 (7) <5>
Control reference voltage pin. The voltage is set internally to approx. VCC/2 but this can
be varied by applying voltage through a low impedance (input impedance = approx.
2.5 k
).
LIM
11 (8) <6>
Current limiting function control pin. The output current is varied linearly by this pin
voltage; slope = 0.5 A/V typ at Rf = 0.5
.
FC
12 (9) <7>
Speed control loop frequency characteristic correction pin
Uin
+, Uin–
Vin
+,Vin–
Win
+, Win–
13, 14 (10, 11) <8, 9>
15, 16 (12, 13) <10, 11>
17, 18 (14, 15) <12, 13>
U-phase Hall device input pin; logic ‘‘H’’ represents IN+ > IN.
V-phase Hall device input pin; logic ‘‘H’’ represents IN+ > IN.
W-phase Hall device input pin; logic ‘‘H’’ represents IN+ > IN.
VCC
19 (16) <14>
Power supply pin for supplying power to all circuits except output section in IC; this
voltage must be stabilized so as to eliminate ripple and noise.
VS
22 (21) <15>
Output selection power supply pin
ADJ
23 (22) <16>
Pin for external adjustment of torque ripple correction factor. When this factor is to be
adjusted, a voltage is externally applied to the ADJ pin through a low impedance. If the
voltage applied is increased, the factor drops; conversely, if it is reduced, the factor rises.
The factor varies between 0 and 2 times that of the open state. (The voltage is set inside
to approx. VCC/2 internally, and the input impedance is approx. 5 k.)
Rf (PWR)
Rf (SNS)
24 (23) <17>
33 (31) <24>
Output current detection pin. Current feedback is applied to the control section by
connecting Rf between this pin and GND. The lower oversaturation prevention circuit
and torque ripple correction circuit are activated in accordance with this pin voltage.
Since the oversaturation prevention level is set with this voltage, the lower
oversaturation prevention effect may deteriorate in the high current range if the Rf value
is reduced to an extremely low level. The PWR and SENSE pins must always be
connected.
Uout
Vout
Wout
27 (26) <21>
29 (27) <22>
31 (28) <23>
U-phase output pin
V-phase output pin
W-phase output pin
(Built-in spark killer diode)
GSENSE
34 (32) <25>
GND sensing pin. By connecting this pin to the neighboring GND on the Rf resistor side
of the motor GND wire which contains Rf, the effect that GND common impedance
exerts on Rf can be eliminated. (This pin must not be left open.)
Control characteristics
Current limit characteristics
Slope = 0.50 A/V typ
LB1889, 1889M, 1889D
No.5131 - 4/13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LB1890M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:FDD Spindle Motor Driver |
| LB1893 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:3-Phase Brushless Motor Driver for CD-ROM Spindle Motors |
| LB1894M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:3-Phase Brushless Motor Driver for CD-ROM Spindle Motors |
| LB1894M-TLM-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LB1895 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:3-Phase Brushless Motor Driver for CD-ROM Spindle Motors |
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