LB1889D 查看數據表（PDF） - SANYO -> Panasonic

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LB1889D

3-phase Brushless Motor Driver for VTR Capstans

SANYO -> Panasonic 

LB1889, 1889M, 1889D

Control Function & Current Limit Function

Control characteristics

Current limit characteristics

Slope = 0.50 A/V typ

Pin Functions

The pin number in ( ) is for MFP, that in < > is for DIP, and other than these is for QFP.

Pin name

FR

Pin No.

1 (33) <26>

GND

FGin (–)

2 (34) <27>

5 (3) <28>

FGin (+)

6 (4) <1>

FG-OUT

CTL

8 (5) <3>

9 (6) <4>

CTLREF

10 (7) <5>

LIM

FC

Uin+, Uin–

Vin+, Vin–

Win+, Win–

VCC

VS

ADJ

11 (8) <6>

12 (9) <7>

13, 14 (10, 11) <8, 9>

15, 16 (12, 13) <10, 11>

17, 18 (14, 15) <12, 13>

19 (16) <14>

22 (21) <15>

23 (22) <16>

Rf (PWR)

Rf (SNS)

24 (23) <17>

33 (31) <24>

Uout

Vout

Wout

GSENSE

27 (26) <21>

29 (27) <22>

31 (28) <23>

34 (32) <25>

Function

Forward/reverse select pin. The pin voltage selects forward/reverse. (Vth = 2.5 V typ at

VCC = 5 V)

GND for other than output transistor. Minimum potential of output transistor is at Rf pin.

Input pin when FG amplifier is used with inverted input. Feedback resistor is connected

between this pin and FG-OUT.

Noninverting input pin when FG amplifier is used with differential input. Internal bias is

not applied.

FG amplifier output pin. Resistive load provided internally.

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 Ω

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 kΩ).

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 Ω.

Speed control loop frequency characteristic correction pin

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−.

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.

Output selection power supply pin

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 kΩ.)

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.

U-phase output pin

V-phase output pin

W-phase output pin

(Built-in spark killer diode)

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.)

No.5131 - 4/13

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