LB1996
No. 5977-1/9
LB1996
Three-Phase Brushless Motor Driver
for CD-ROM Spindle Drive
Monolithic Digital IC
The LB1996 is a 3-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 power dissipation 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
1 Hall FG/3 Hall FG switchable
Package Dimensions
unit: mm
3227-HSOP24
[LB1996]
Overview
SANYO : HSOP24
Ordering number : EN5977A
15.3
4.3
0.3
7.9
10.5
1.3
0.1
2.25
2.5max
0.65
0.3
0.8
0.85
0.25
24
1
12
13
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.
62599RM(KI)
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
1.9
2.0
0
Ambient temperature, Ta
C
Allowable power dissipation, Pd max W
Pd max Ta
IC only
With substrate
LB1996
No. 5977-2/9
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
0.8
W
1.9
W
Operating temperature
Topr
C
Storage temperature
Tstg
C
20 to +75
55 to +150
with substrate (114.3 x 76.1 x 1.6 mm
3
,
glass exposy)
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.
V
CC
1 max
V
CC
2 max
V
CC
3 max
V
O
max
V
IN
max
I
O
max
V
CC
1
Parameter
Symbol
Conditions
Ratings
Unit
Power supply voltage
4 to 6
V
4 to 13.6
V
4 to 13.6
V
V
CC
1
V
CC
2
V
CC
3
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
V
CC
2 = V
CC
3
V
CC
1 = V
CC
3
V
CC
2
V
CC
1
LB1996
No. 5977-3/9
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
Hysteresis
Design target value
15
C
[Short braking]
Brake pin at High level
4 5
V
Brake pin at Low level
0 1
V
[1 Hall FG/3 Hall FG switching]
4 5
V
0
1
V
Ratings
Parameter
Symbol
Conditions
Unit
1.0
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.
Items shown to be design target values are not measured.
V
C
pin input current
V
CREF
pin input current
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
S/SH
V
S/SL
I
S/SI
I
S/SL
V
S/S
= 5V
V
S/S
= 0V
V
CC
1
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
= 5 mA
T
TSD
T
TSD
V
BRH
V
BRL
V
FSH
V
FSL
FG
SEL
pin at High level
FG
SEL
pin at Low level
LB1996
No. 5977-4/9
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
VOUT
24 PWR GND
2
UOUT
23 WOUT
3
VCC2
22 VC
4
VCC3
21 VCREF
5
RF
20 FC
6
VCC1
FRAME GND
19 FGSEL
FRAME GND
7
UIN2
18 SIG GND
8
UIN1
17 S/S
9
VIN2
16 BRAKE
10
VIN1
15 FG
11
WIN2
14 RS
12
WIN1
13 VH
LB1996
A11170
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
Source > Sink
1
2
3
4
5
6
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
LB1996
No. 5977-5/9
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
+
FG
SEL
SIG GND
+
+
RS
FC
S/S
Matrix
Waveform distributor
Hall power
supply
Forward/
reverse
Current limiter
Short brake
1 Hall FG/3 Hall FG switching
Thermal shutdown
Reference voltage
Rotation direction detector
A11169
LB1996
No. 5977-6/9
Sample Application Circuit
Capacitor requirements may change depending on motor.
For some motors, capacitor between Hall inputs may not be needed.
Power supply - GND
Output - GND
Between Hall inputs
1 VOUT
24
PWR GND
2 UOUT
23
WOUT
3 VCC2
22
VC
4 VCC3
21
VCREF
5 RF
20
FC
6 VCC1
FRAME GND
19
FGSEL
FRAME GND
7 UIN2
18
SIG GND
8 UIN1
17
S/S
9 VIN2
16
BRAKE
10 VIN1
15
FG
11 WIN2
14
RS
12 WIN1
13
VH
LB1996
0.1
F
0.1
F
0.1
F
CTRL signal
CTRL reference voltage
0.1
F
0.2 to 0.5
0.1
F
0.047
F
0.047
F
0.047
F
FGSEL
S/S
BRAKE
A11171
LB1996
No. 5977-7/9
Pin number
Pin name
Pin voltage
Equivalent circuit
Pin function
3
4V to 13.6V
4
4V to 13.6V
6
4V to 6V
14
R S
15
F G
13
17
S/S
18
SIG GND
20
F C
8
7
10
9
12
11
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 constant current
control amplifier
Reverse detector pin
Forward rotation: High
Reverse rotation: Low
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
1 Hall element or 3 Hall elements
waveform Schmitt comparator
combined output
A11172
14 15
VCC1
100
A
10k
10
8
12
25
A
9
7
11
25
A
25
A
200
200
VCC1
13
VCC1
75
A
30k
2k
17
VCC1
50k
75k
20
VCC1
2k
20k
5k
A11173
A11174
A11175
A11176
LB1996
No. 5977-8/9
Pin number
Pin name
Pin voltage
Equivalent circuit
Pin function
21
2V to 3V
22
23
24
PWR GND
1
2
5
R F
19
C C
16
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
prevents reverse rotation.)
W phase output
Output transistor GND
V phase output
Upper side output NPN 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.
3 Hall FG/1 Hall FG switching
pin
FG
SEL
High
>
3 Hall FG
Low/Open
>
1 Hall FG
Short brake pin
BRAKE:
High
>
Short brake operation
Low/Open
>
Motor drive operation
U phase output
V
CREF
V
C
W
OUT
V
OUT
U
OUT
0V to V
CC
1
22
25
A
100
A
100
A
25
A
VCC1
200
10k
15k
30k
30k
200
21
5
24
VCC2
3.9
3.9
23
1
2
19
VCC1
50k
75k
100
A
16
VCC1
50k
75k
A11177
A11178
A11179
A11180
FG
SEL
LB1996
No. 5977-9/9
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.
PDF 
ZIP