LB1997
No. 5978-1/9
LB1997
Three-Phase Brushless Motor Driver
for CD-ROM Spindle Drive
Monolithic Digital IC
The LB1997 is a three-phase brushless motor driver
especially suited for CD-ROM spindle motor drives.
Functions
Current linear drive
Control V type amplifier
Separate power supply for output upper side bias
circuit allows low output saturation by boosting this
power supply only (useful for 5V power supply types).
Upper side current detection technique reduces loss
voltage of current detection resistor. Voltage effect of
this resistor reduces internal current drain of IC.
Built-in short braking circuit
Built-in reverse blocking circuit
Hall FG output
Built-in S/S function
Built-in current limiter circuit
Built-in Hall power supply
Built-in thermal shutdown circuit
V type control/single-side control switching pin allows
CLV and CAV operation.
Package Dimensions
unit: mm
3222-HSOP28
[LB1997]
Overview
SANYO : HSOP28
Ordering number : EN5978A
60499RM(KI)/22699RM(KI)
0.1
1.8max
7.6
1.0
1
14
0.3
0.8
15
28
2.7
15.2
0.8
5.6
0.5
0.2
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
0
20
20
40
60
75 80
100
0.4
0.8
1.2
1.6
2.0
0
Ambient temperature, Ta
C
Allowable power dissipation, Pd max W
Pd max Ta
With substrate
1.5
0.6
IC only
LB1997
No. 5978-2/9
Maximum Ratings
at Ta = 25
C
Specifications
Operating Conditions
at Ta = 25
C
Sample Application
at Ta = 25
C
Note: When boost-up voltage is used at V
CC
2, output can be set to low-saturation.
Parameter
Symbol
Conditions
Ratings
Unit
12V type
Regulated voltage
4 to 6
V
Unregulated voltage
4 to 13.6
V
5V type
Regulated voltage
4 to 6
V
4 to 13.6
V
Boost-up voltage or regulated voltage
(Note)
V
CC
1 max
V
CC
2 max
V
CC
3 max
V
O
max
V
IN
max
I
O
max
V
CC
1
V
CC
1
V
CC
2
V
CC
3
V
CC
1
V
CC
1
V
CC
2 = V
CC
3
V
CC
1 = V
CC
3
V
CC
2
Parameter
Symbol
Conditions
Ratings
Unit
Power supply voltage
4 to 6
V
4 to 13.6
V
4 to 13.6
V
Parameter
Symbol
Conditions
Ratings
Unit
Power supply voltage
7.0
V
14.4
V
14.4
V
Applied output voltage
14.4
V
Applied intput voltage
V
Output current
1.3
A
Allowable power dissipation
Pd max
IC only
0.6
W
1.5
W
Operating temperature
Topr
20 to +75
C
Storage temperature
Tstg
55 to +150
C
with substrate (114.3
76.1
1.6 mm
3
,
glass exposy)
LB1997
No. 5978-3/9
Electrical Characteristics
at Ta = 25
C, V
CC
1
= 5V, V
CC
2
= V
CC
3 = 12V
Note:
During S/S OFF (standby), the Hall comparator is at High.
Design target values are not measured.
I
CC
1
I
CC
2
I
CC
3
I
CC
1OQ
I
CC
2OQ
I
CC
3OQ
V
C
= V
CREF
V
C
= V
CREF
V
C
= V
CREF
V
S/S
= 0V
V
S/S
= 0V
V
S/S
= 0V
V
OU
1
V
OD
1
V
OU
2
V
OD
2
V
CL
I
O
= 0.5A, V
CC
1 = 5V, V
CC
2 = V
CC
3 = 12V
I
O
= 0.5A, V
CC
1 = 5V, V
CC
2 = V
CC
3 = 12V
I
O
= 0.5A, V
CC
1 = V
CC
3 = 5V, V
CC
2 = 12V
I
O
= 0.5A, V
CC
1 = V
CC
3 = 5V, V
CC
2 = 12V
R
RF
= 0.43
V
HCOM
I
HIB
V
HIN
V
CC
1.0
mV
P-P
V
CC
1
V
S/SH
V
S/SL
I
S/SI
I
S/SL
V
S/S
= 5V
V
S/S
= 0V
I
VC
I
VCREF
GV
CO
V
CTH
V
CTH
V
C
= V
CREF
= 2.5V
V
C
= V
CREF
= 2.5V
V
RF
/
V
C
V
CREF
= 2.5V
V
CREF
= 2.5V
V
H
I
H
I
H
= 5mA
T
TSD
T
TSD
V
BRH
V
BRL
V
CCH
V
CCL
min
typ
max
[Power supply current]
Power supply current
8 mA
0 mA
150 250
A
Output idle current
200
A
30
A
30
A
[Output]
Saturation voltage, upper side 1
V
lower side 1
0.3 V
Saturation voltage, upper side 2
0.3 V
lower side 2
0.3 V
Current limiter setting voltage
0.37 V
[Hall amplifier]
Common mode input voltage range
1.2 V
Input bias current
1
A
Minimum Hall input level
60
[S/S pin]
High level voltage
2.0
V
Low level voltage
0.7 V
Input current
200
A
Leak current
30
A
[Control]
1
A
1
A
Voltage gain
0.25
times
Startup voltage
2.35 2.65
V
Startup voltage width
50 150
mV
[Hall power supply]
Hall power supply voltage
0.8 V
Allowable current
20 mA
[Thermal shutdown]
Operating temperature
Design target value
150 180 210
C
Hysterisis
Design target value
15
C
[Short braking]
Brake pin at High level
4 5
V
Brake pin at Low level
0 1
V
[Control switching]
CC pin at High level
4 5
V
CC pin at Low level
0
1
V
Ratings
Parameter
Symbol
Conditions
Unit
1.0
LB1997
No. 5978-4/9
Truth Table
Pin Assignment
Input:
H: Input 1 is higher in potential than input 2 by at least 0.2V.
L: Input 1 is lower in potential than input 2 by at least 0.2V.
V
C
1
RS
28 VH
2
FG
27 WIN1
3
BRAKE
26 WIN2
4
S/S
25 VIN1
5
NC
24 VIN2
6
NC
FRAME GND
23 UIN1
7
SIG GND
22 UIN2
FRAME GND
8
CC
21 VCC1
9
FC
20 RF
10
VCREF
19 NC
11
VC
18 VCC3
12
WOUT
17 VCC2
13
PWR GND
16 UOUT
14
NC
15 VOUT
LB1997
A11182
Top view
Hall input
Control
U
V
W
Phase W > Phase V
H
Phase V > Phase W
L
Phase W > Phase U
H
Phase U > Phase W
L
Phase V > Phase W
H
Phase W > Phase V
L
Phase U > Phase V
H
Phase V > Phase U
L
Phase V > Phase U
H
Phase U > Phase V
L
Phase U > Phase W
H
Phase W > Phase U
L
1
2
3
4
5
6
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
Source > Sink
LB1997
No. 5978-5/9
Block Diagram
+
U
IN
1
V
CC
1
V
CC
2
RF
U
OUT
U
IN
2
+
V
IN
1
+
V
IN
2
+
W
IN
1
W
IN
2
V
H
FG
+
V
OUT
W
OUT
PWR GND
V
CC
3
BRAKE
V
CREF
V
C
+
CC
SIG GND
+
+
RS
FC
S/S
Matrix
Waveform distributor
Hall power
supply
Forward/
reverse
Current limiter
Short brake
CLV/CAV
switching
Thermal shutdown
Reference voltage
Rotation direction detector
A11181
LB1997
No. 5978-6/9
Sample Application Circuit
1 RS
28
VH
2 FG
27
WIN1
3 BRAKE
26
WIN2
4 S/S
25
VIN1
5 NC
24
VIN2
6 NC
FRAME GND
23
UIN1
7 SIG GND
22
UIN2
FRAME GND
8 CC
21
VCC1
9 FC
20
RF
10 VCREF
19
NC
11 VC
18
VCC3
12 WOUT
17
VCC2
13 PWR GND
16
UOUT
14 NC
15
VOUT
LB1997
A11183
0.1
F
0.1
F
0.1
F
0.1
F
0.2 to 0.5
0.047
F
0.047
F
0.047
F
5V
12V
BRAKE
S/S
CC
LB1997
No. 5978-7/9
Pin number
Pin name
Pin voltage
Equivalent circuit
Pin function
17
4V to 13.6V
18
4V to 13.6V
21
4V to 6V
1
R S
2
F G
28
4
S/S
7
SIG GND
9
F C
23
22
25
24
27
26
Pin Descriptions
Continued on next page
Source side predrive voltage supply
pin
Constant current control amplifier
voltage supply pin
Power supply pin for all circuits
except output transistors, source
predriver, and low current control
amplifier
Reverse detector pin
Forward rotation: High
Reverse rotation: Low
1 Hall element waveform Schmitt
comparator composite output
U phase Hall element input and
reverse detector U phase Schmitt
comparator input pin
Logic High indicates U
IN
1 > U
IN
2.
V phase Hall element input and
reverse detector V phase Schmitt
comparator input pin
Logic High indicates V
IN
1 > V
IN
2.
W phase Hall element input and
reverse detector W phase Schmitt
comparator input pin
Logic High indicates W
IN
1 > W
IN
2.
Hall element lower side bias voltage
supply pin
When this pin is at 0.7V or lower, or
when it is open, all circuits are
inactive. When driving motor, set
this pin to 2V or higher.
Control loop frequency compensa-
tor pin. Connecting a capacitor
between this pin and GND prevents
closed loop oscillation in current
limiting circuitry.
GND pin for all circuits except
output
V
CC
2
V
CC
3
V
CC
1
U
IN
1
U
IN
2
V
IN
1
V
IN
2
W
IN
1
W
IN
2
1.2V to
V
CC
11V
V
H
0V to V
CC
1
14 15
VCC1
100
A
10 k
A11184
10
8
12
25
A
9
7
11
25
A
25
A
200
200
VCC1
A11185
13
VCC1
75
A
30 k
2 k
A11186
17
VCC1
50 k
A11187
75 k
20
VCC1
2 k
20 k
5 k
A11188
LB1997
No. 5978-8/9
Pin number
Pin name
Pin voltage
Equivalent circuit
Pin function
10
2V to 3V
11
12
13
PWR GND
15
16
20
R F
8
C C
3
BRAKE
Continued from preceding page
Control reference voltage supply
pin. Determines control start
voltage.
Speed control voltage supply pin
V type control technique
V
C
> V
CREF
: Forward
V
C
< V
CREF
: Slowdown
(Reverse-blocking circuit built in to
prevent reverse rotation.)
W phase output
Output transistor GND
V phase output
U phase output
Upper side output PNP transistor
collector pin (common for all 3
phases). For current detection,
connect resistor between V
CC
3
pin and RF pin. Constant current
control and current limiter works
by detecting this voltage.
V type control/single-side control
switching pin
CC:
High
>
Single-side control
Low/Open
>
V type control
Short brake pin
BRAKE:
High
>
Short brake operation
Low/Open
>
Motor drive operation
V
CREF
V
C
0V to V
CC
1
W
OUT
V
OUT
U
OUT
22
25
A
100
A
100
A
25
A
VCC1
200
10 k
15 k
30 k
30 k
200
21
A11189
5
24
VCC2
3.9
3.9
23
1
2
A11190
19
VCC1
8 k
8 k
50 k
75 k
A11191
100
A
16
VCC1
50 k
75 k
A11192
LB1997
No. 5978-9/9
This catalog provides information as of June, 1999. Specifications and information herein are subject to change
without notice.
PS
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.
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