Page 1
Ordering number : ENN*6192
Preliminary
LB1947
Monolithic Digital IC
LB1947
PWM Current Control Type DC Motor Driver
Features
• PWM current control (fixed OFF time)
• Selectable current decay pattern (FAST, SLOW, and
MIX DECAY modes)
• Simultaneous ON prevention function (feedthrough
current prevention)
Package Dimensions
unit: mm
3249-SIP13HJ
[LB1947]
25.6
C0.7
φ
3.4
(10.0)
φ
2.0
2.4
• Built-in thermal shutdown circuit
• Built-in noise canceler
(13.9)
16.4max
12.2
(12.8)
3.5
2.0min
13
(0.8)
1
2.0
0.5
1.15
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Maximum motor supply voltage VBB max 50 V
Output peak current I OPEAK tw ≤ 20 µs 2.25 A
Output continuous current I O max 2.0 A
Logic supply voltage VCC max 7.0 V
Logic input voltage range VIN –0.3 to VCC V
Emitter output voltage VE max 1.1 V
Reference voltage VREF –0.3 to VCC V
Operating temperature Topr –20 to +85 °C
Storage temperature Tstg –55 to +150 °C
Allowable power dissipation Pd max Ta = 25°C 1.6 W
SANYO : SIP13HJ
1.2
0.4
3.0min
φ
Allowable Operating Ranges at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Motor supply voltage VBB 10 to 45 V
Logic supply voltage VCC 4.75 to 5.25 V
Reference voltage VREF 0 to (Vcc–2) V
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
80699RM(KI)
No. 6192-1/7
Page 2
LB1947
Electrical Characteristics at Ta = 25°C, VBB = 42V, VCC = 5V, VREF = 1.0V
Parameter Symbol Conditions
Output stage supply current I BB ON No-load state 0.4 0.6 1.0 mA
I BB BR No-load state 0.2 0.4 0.8 mA
I BB OFF No-load state 0.2 0.4 0.8 mA
I BBwt No-load state 0.1 mA
Output saturation voltage 1 V osat 1 Io = +1.0A sink 1.2 1.5 V
2 V osat 2 Io = +2.0A sink 1.6 1.9 V
3 V osat 3 Io = –1.0A source 1.8 2.2 V
Output Block
4 V osat 4 Io = –2.0A source 2.1 2.4 V
Output leak current I o1(leak) VO = VBB sink 50 µA
I o2(leak) VO = 0V source –50 µA
Output sustain voltage V SUS L = 3.9 mH Io = 2.0A *1 50 V
Logic supply current I CC ON IN1 : High, IN2 : Low, ST = High 11 16 21 mA
I CC BR IN1 : Low, IN2 : High, ST = High 11 16 21 mA
I CC OFF IN1 : Low, IN2 : Low, ST = High 11 16 21 mA
I CCwt ST : Low 1.0 2 3.0 mA
Input voltage V INH 2V
V INL 0.8 V
Input current I INH V IN = 5V 60 90 120 µA
I INL V IN = 0.8V 6 10 13 µA
Sensing voltage VE 0 1.1 V
Sensing voltage 25H VEH25 VI = High, V
Sensing voltage 25L VEL25 VI = Low, V
Sensing voltage 10H VEH25 VI = High, V
Sensing voltage 10L VEL25 VI = Low, V
Logic Block
Sensing voltage 05H VEH25 VI = High, V
Sensing voltage 05L VEL25 VI = Low, V
= 2.5V 0.970 1.0 1.030 V
REF
= 2.5V 0.483 0.5 0.513 V
REF
= 1.0V 0.385 0.4 0.410 V
REF
= 1.0V 0.190 0.2 0.210 V
REF
= 0.5V 0.190 0.2 0.210 V
REF
= 0.5V 0.092 0.1 0.108 V
REF
Reference current I ref Vref = 1.0V –0.5 0.5 µA
CR pin current I
MD pin voltage V
V
V
MD pin current I
I
MDH
MDL
CR = 1.0V –1.56 –1.3 –1.04 mA
CR
MDH
MDM
MDL
Vcc–0.3 V
MD = (Vcc–0.5)V, CR = 1.0V –1.0 1.0 µA
MD = 0.4V, CR = 2.0V –5.0 µA
Thermal shutdown temperature T SD 170 °C
*1: Guaranteed design
Ratings
min typ max
Unit
0.3Vcc Vcc–1.0 V
0.4 V
Truth Table
IN 1 IN 2 ST VI MD OUT OUT– Operating mode
H L H H L H L Forward, 2/5 times, FAST
H L H H M H L Forward, 2/5 times, MIX
H L H H H H L Forward, 2/5 times, SLOW
H L H L L H L Forward, 1/5 times, FAST
H L H L M H L Forward, 1/5 times, MIX
H L H L H H L Forward, 1/5 times, SLOW
H H H H L L H Reverse, 2/5 times, FAST
H H H H M L H Reverse, 2/5 times, MIX
H H H H H L H Reverse, 2/5 times, SLOW
H H H L L L H Reverse, 1/5 times, FAST
H H H L M L H Reverse, 1/5 times, MIX
H H H L H L H Reverse, 1/5 times, SLOW
L H H H L L L Brake, 2/5 times, FAST
L H H H M L L Brake, 2/5 times, MIX
L H H L L L L Brake, 1/5 times, FAST
L H H L M L L Brake, 1/5 times, MIX
L H H X H L L Brake, no current limiting
L L H X X OFF OFF Output OFF
XX
Except for MD pin, Low at input OPEN MD M: determined by external voltage
L or OPEN
X X OFF OFF Standby mode (circuit OFF)
No. 6192-2/7
Page 3
Pin Description
Pin number
1
3
2
4
5
8
9
6
7
10
Pin name
OUTA–
OUTA
VI
ST
IN1
IN2
VBB
VCC
VREF
LB1947
Equivalent circuit
Output pin
E
Sense voltage control pin
VI
V
CC
High : sense voltage is 2/5 of V
Low : sense voltage is 1/5 of V
100µA
ST
High : circuit operation ON
Low : standby mode
50kΩ
IN1
High : rotation mode
4
40kΩ
VI
A12583
Low : brake mode
IN2
High : reverse mode
Low : forward mode
Motor power supply voltage
Logic power supply voltage
V
CC
Output current setting reference pin
Setting range: 0 to (Vcc–2V)
5µA
Pin function
REF
REF
11
12
13
CR
MD
GND
V
3s 1s
300Ω
10
REF
A12584
Oscillator with self-excitation
Current attenuation switching pin
Low : FAST DECAY
High : SLOW DECAY
M : MIX DECAY
M is set by external power supply voltage.
Range : 1.1 to 4.0V
Ground pin
No. 6192-3/7
Page 4
Block Diagram
MD
IN1
IN2
ST
VREF
LB1947
136
12
8
9
5
4
VI
10
Control
logic
circuit
Current
select
circuit
One-shot
multi-
blanking
time
–
Thermal
shutdown circuit
UVLO
VBBOUTA OUTA
7
VCC
GND
Pin Assignment
13
132 4 5
11
CR
2
E
LB1947
6 7 8 9 10 11 12 13
OUTA–
E
OUTA
VI
ST
VBB
VCC
IN1
IN2
VREF
CR
MD
GND
No. 6192-4/7
Page 5
Sample Application Circuits
1. Forward/reverse motor with current limiter
* Schottky barrier type for external diodes.
LB1947
OUT
M
31
OUT
24V
–
6
VBB
IN1
IN2
ST
MD
VI
VREF
GND
RE
VCC
12
8
9
5
4
10
13
Control
logic
circuit
Current
select
circuit
One-shot
multi-
blanking
time
CR
Thermal
shutdown
circuit UVLO
E
2
11
7
5V
Limiter current setting method I = V
/ (5 × RE)
REF
IN1 IN2 ST OUT OUT– Mode
H H H L H Reverse
H L H H L Forward
L H H L L Brake
L L H OFF OFF Output OFF
– – L OFF OFF Standby mode
No. 6192-5/7
Page 6
2. Forward/reverse motor
LB1947
* Schottky barrier type for external diodes.
OUT
M
31
OUT
24V
–
6
VBB
IN1
IN2
ST
MD
VI
VREF
GND
VCC
12
8
9
5
4
10
13
Control
logic
circuit
Current
select
circuit
One-shot
multi-
blanking
time
CR
Thermal
shutdown
circuit UVLO
E
2
11
7
5V
IN1 IN2 ST OUT OUT– Mode
H H H L H Reverse
H L H H L Forward
L H H L L Brake
L L H OFF OFF Output OFF
– – L OFF OFF Standby mode
No. 6192-6/7
Page 7
LB1947
3. PWM current control forward/reverse motor (MIX DECAY)
* Schottky barrier type for external diodes.
OUT
M
31
OUT
24V
–
6
VBB
IN1
IN2
ST
MD
VI
VREF
GND
RE
VCC
12
8
9
5
4
10
13
Control
logic
circuit
Current
select
circuit
One-shot
multi-
blanking
time
CR
Thermal
shutdown
circuit UVLO
E
2
11
7
5V
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 August, 1999. Specifications and information herein are subject to change
without notice.
No. 6192-7/7
PS
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