LB1978 [SANYO]
Three-Phase Half-Wave Sensorless Motor Driver for Headphone Stereos; 三相半波无传感器电机驱动器的立体声耳机
| 型号： | LB1978 |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | Three-Phase Half-Wave Sensorless Motor Driver for Headphone Stereos |
| 文件： | 总9页 (文件大小：80K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : EN6186
Monolithic Digital IC
LB1978V
Three-Phase Half-Wave Sensorless Motor Driver
for Headphone Stereos
Package Dimensions
unit: mm
Functions and Features
• Three-phase sensorless motor driver
• Built-in speed control
3191-SSOP30
[LB1978V]
• Built-in reference voltage and forward/reverse
switching pin
30
16
• Soft switching
• Built-in short brake drive pin
0.15
1
15
9.95
0.22
0.65
0.43
SANYO : SSOP30
Specifications
Absolute Maximum Ratings at Ta = 25˚C
Parameter
Maximum supply voltage
Output transistor withstand voltage
Maximum output current
Allowable power dissipation
Operating temperature
Symbol
Vcc max
Vsus
Conditions
Ratings
Unit
2.0
4
V
V
Io max
Pd max
Topr
0.6
A
Tj = 125˚C
0.4
W
˚C
˚C
0 to 60
Storage temperature
Tstg
–40 to +125
Allowable Operating Ranges at Ta = 25˚C
Parameter
Symbol
Vcc
Conditions
Ratings
1.0 to 1.7
Unit
V
Power supply voltage
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
63099RM(KI)
No. 6186-1/9
LB1978V
Electrical Characteristics at Ta = 25˚C, Vcc = 1.2V, in the specified test circuit
Ratings
typ
Parameter
Power supply current
Symbol
Icc
Conditions
Unit
min
max
10
10
START pin H, RIRF = 180 kΩ
6.8
mA
µA
V
START pin L, VBR = 0V
0
Reference voltage
Vref
0.725 0.755 0.785
Reference voltage characteristics
∆Vref
/ ∆Vcc Vcc = 1.0 to 1.7V
1.0
2.0
%/V
∆Iref
∆Vref
Reference voltage load characteristics
Iref = 0 to –50 µA
–0.2 –0.06
mV/µA
∆Iref
Oscillator cycle
T
S
C
C
R
T
= 1500 pF
0.52
7.70
0.6
0.68
10.9
ms
ms
S
S
Rotation switching load characteristics
T
= 1500 pF,
F/S
= 180 kΩ *Target
IRF
Rotation detection accuracy
COM voltage
NF/S
= 0.60 ms *Target
–16
12
+16
38
%
mV
V
S
V
–
R
= 1 kΩ
COM
25
0.17
0.12
COM
F side output saturation voltage
S side output saturation voltage
S/S pin input High level voltage
S/S pin input Low level voltage
F/S DR pin ON voltage
Vsat1
Vcc = 1.0V, Im = 0.3A
Vcc = 1.0V, Im = 0.2A
0.30
0.25
Vsat2
V
V
0.9
V
SSH
V
0.3
0.2
V
SSL
V
V
Lon
F/S DR pin OFF voltage
TC pin pull-in voltage
V
Vcc–0.3
80
V
Loff
V
V
1
2
F/S = H
F/S = L
110
220
150
300
mV
mV
V
TC
TC
160
BR1 ON voltage
V
V
V
0.9
BRon
BRoff
BR1 OFF voltage
BRsat voltage
0.3
0.3
V
Io = 6 mA, V
= 1.2V
BR1
0.15
V
BRsat
CI rise voltage
V
0.620 0.650 0.680
60 80 100
0.725 0.755 0.785
26 30 34
0.720 0.755 0.785
V
CI
CI hysteresis width
IRF voltage
∆V
mV
V
CI
V
R
V
= 180 kΩ
IRF
IRF
VI output current
PV pin voltage
I
= 0.3V, V = GND
µA
V
VI
VI
IV
V
PV
∆IFC/∆VVI ratio
∆I /∆V
150
210
250
µA/V
V
FC
VI
Output transistor OFF voltage
Output transistor ON voltage
V
OFF
ON
Vcc–0.3
OUT
V
0.3
V
OUT
Note: Items shown to be “Target” are not measured.
No. 6186-2/9
LB1978V
Pd max – Ta
0.4
0.26
0
25
Ambient temperature, Ta – (°C)
60
Pin Assignment
30
29
28 27
26
25 24
23
22
21
20
19
18
17
16
LB1978V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Top view
No. 6186-3/9
LB1978V
Equivalent Circuit Block Diagram
DR
TC1
TC2
OSC
Vcc
P1
P2P3 BR1
Brake
circuit
BR2
U1
Divider
Rotation
detector
V1
W1
U2
V2
W2
Oscillator
Constant
IRF
current circuit
Startup
switching
PGND
DU
Startup
detection
Soft switching
COM
S/S
FC
Current bias
Speed
select
divider
Current
buffer
Reference
voltage
Comparator
d/dt
CI
Pulse
VI
Vref
SGND
F/S
PW PV IV
VI
Sample Application Circuit
0.01
µF
100Ω
0.01
µF
0.01
µF
1µF
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Vcc VREF S/S DR F/S W1 V1 U1 PGND W2 V2
U2 DU SGND P3
LB1978V
FC OSC COM IRF CI
PW PV IV
VI
9
BR1 BR2 TC1 TC2 P1 P2
10 11 12 13 14 15
1
2
3
4
5
6
7
8
180
kΩ
2.2µF
180
6.2kΩ
680kΩ
kΩ
0.33µF
0.1µF
1500pF
0.01µF
1kΩ
0.1µF
68kΩ
20kΩ
0.033µF
No. 6186-4/9
LB1978V
Pin Description
Pin number Pin name
Equivalent circuit
Pin function
1
2
3
4
FC
OSC
COM
IRF
Oscillator and ripple suppression pin.
Vcc
The higher the capacitance connected to
FG, the more effectively will ripple
components be suppressed.
1
PGND
Vcc
Startup pulse cycle and drive switching
cycle setting pin.
Increased capacitance will result in higher
startup pulse cycle and drive switching
cycle.
2
SGND
Vcc
Startup waveform detector offset setting
pin.
3
10kΩ
R
= 1 kΩ results in approx. 25 mV
COM
offset at startup
120µA
PGND
Oscillator circuit and F-V servo circuit
internal current setting pin.
Vcc
4
25µA
SGND
Vcc
5
CI
Speed adjustment pin using CR
oscillation based on FG pulse edge
detection.
5
SGND
Continued on next page
No. 6186-5/9
LB1978V
Continued from preceding page
Pin number Pin name
Equivalent circuit
Pin function
CI pin waveform and reference voltage
comparator output pin.
6
7
8
9
PW
PV
IV
Vcc
6
PGND
Vcc
Current buffer input/output pin.
7
1kΩ
SGND
Vcc
Current-to-voltage converter comparator
input pin.
8
1kΩ
SGND
Vcc
VI
Voltage-to-current converter input pin.
Speed increases when VI pin voltage is
higher than reference voltage and
decreases when VI pin voltage is lower
than reference voltage.
9
1kΩ
SGND
10
BRI
Brake bias pin.
Vcc
When S/S pin is Low and BR1 pin is 0.9V
or higher, brake drive pin BR2 goes ON.
10
SGND
Continued on next page
No. 6186-6/9
LB1978V
Continued from preceding page
Pin number Pin name
Equivalent circuit
Pin function
Brake drive pin.
11
BR2
Vcc
When S/S pin is Low and BR1 pin is 0.9V
or higher, brake drive is activated.
This is an open-collector output.
11
SGND
12
13
TC1
TC2
Motor current rise/fall slope setting pins.
Vcc
Setting value changes depending on the
High or Low status of the F/S pin.
12
13
SGND
Vcc
14
15
16
P1
P2
P3
Internal operation measurement pins
which shape the current waveform.
Must be left open for use.
14
15
16
SGND
17
SGND
Signal ground pin.
Separate from power supply ground.
18
19
20
21
DU
U2
V2
DU is base pin for U low-speed output
transistor.
Vcc
W2
U2, V2, and W2 are pins for connection to
low-speed motor coils.
19
20
21
18
22
PGND
22
PGND
Power supply ground.
Continued on next page
No. 6186-7/9
LB1978V
Continued from preceding page
Pin number Pin name
Equivalent circuit
Pin function
23
24
25
U1
V1
U1, V1, and W1 are pins for connection to
high-speed motor coils.
Vcc
W1
23
24
25
22
PGND
26
F/S
High-speed/low-speed mode select pin.
Vcc
26
Vcc –1.0V or lower: high-speed (fast)
Vcc –0.3V or higher: low-speed (slow)
SGND
Vcc
27
DR
Rotation direction select pin.
Vcc –0.3V or higher: phase sequence
U -> V -> W
27
Vcc –1.0V or lower: phase sequence
U -> W -> V
SGND
28
S/S
Start/stop pin.
0.9V or higher: Start
High active.
Vcc
28
SGND
29
Vref
Reference voltage pin.
Vcc
Reference voltage is 0.75V.
50µA
29
SGND
30
Vcc
Power supply pin.
No. 6186-8/9
LB1978V
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer's
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer's products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products(including technical data,services) described or
contained herein are controlled under any of applicable local export control laws and regulations,
such products must not be exported without obtaining the export license from the authorities
concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
This catalog provides information as of June, 1999. Specifications and information herein are subject to change
without notice.
PS No. 6186-9/9
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