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Ordering number : ENN*6192
LB1947
Monolithic Digital IC
LB1947
PWM Current Control Type DC Motor Driver
Preliminary Features
* PWM current control (fixed OFF time) * Selectable current decay pattern (FAST, SLOW, and MIX DECAY modes) * Simultaneous ON prevention function (feedthrough current prevention) * Built-in thermal shutdown circuit * Built-in noise canceler
Package Dimensions
unit: mm 3249-SIP13HJ
[LB1947]
25.6 C0.7
3.4 2.0
2.4
(10.0)
2.0min
1 (0.8)
2.0
0.5
1.15 13
3.5
(13.9) 12.2 (12.8) 16.4max
0.4 1.2
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum motor supply voltage Output peak current Output continuous current Logic supply voltage Logic input voltage range Emitter output voltage Reference voltage Operating temperature Storage temperature Allowable power dissipation Symbol VBB max I OPEAK I O max VCC max VIN VE max VREF Topr Tstg Pd max Conditions tw 20 s Ratings 50 2.25 2.0 7.0 -0.3 to VCC 1.1 -0.3 to VCC -20 to +85 -55 to +150 1.6
SANYO : SIP13HJ
Ta = 25C
Unit V A A V V V V C C W
Allowable Operating Ranges at Ta = 25C
Parameter Motor supply voltage Logic supply voltage Reference voltage Symbol VBB VCC VREF Conditions Ratings 10 to 45 4.75 to 5.25 0 to (Vcc-2) Unit V V 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
3.0min
LB1947
Electrical Characteristics at Ta = 25C, VBB = 42V, VCC = 5V, VREF = 1.0V
Parameter Output stage supply current Symbol I BB ON I BB BR I BB OFF I BBwt V osat 1 V osat 2 V osat 3 V osat 4 I o1(leak) I o2(leak) V SUS I CC ON I CC BR I CC OFF I CCwt V INH V INL I INH I INL VE VEH25 VEL25 VEH25 VEL25 VEH25 VEL25 I ref I CR V MDH V MDM V MDL I MDH I MDL T SD Conditions No-load state No-load state No-load state No-load state Io = +1.0A sink Io = +2.0A sink Io = -1.0A source Io = -2.0A source VO = VBB sink VO = 0V source L = 3.9 mH Io = 2.0A *1 IN1 : High, IN2 : Low, ST = High IN1 : Low, IN2 : High, ST = High IN1 : Low, IN2 : Low, ST = High ST : Low min 0.4 0.2 0.2 Ratings typ 0.6 0.4 0.4 1.2 1.6 1.8 2.1 -50 50 11 11 11 1.0 2 60 6 0 0.970 0.483 0.385 0.190 0.190 0.092 -0.5 -1.56 Vcc-0.3 0.3Vcc -1.0 -5.0 170 max 1.0 0.8 0.8 0.1 1.5 1.9 2.2 2.4 50 Unit mA mA mA mA V V V V A A V mA mA mA mA V V A A V V V V V V V A mA V V V A A C
Output Block
Output saturation voltage 1 2 3 4 Output leak current Output sustain voltage Logic supply current
16 16 16 2
21 21 21 3.0 0.8 120 13 1.1 1.030 0.513 0.410 0.210 0.210 0.108 0.5 -1.04 Vcc-1.0 0.4 1.0
Input voltage Input current Sensing voltage Sensing voltage 25H Sensing voltage 25L Sensing voltage 10H Sensing voltage 10L Sensing voltage 05H Sensing voltage 05L Reference current CR pin current MD pin voltage
V IN = 5V V IN = 0.8V VI = High, VREF = 2.5V VI = Low, VREF = 2.5V VI = High, VREF = 1.0V VI = Low, VREF = 1.0V VI = High, VREF = 0.5V VI = Low, VREF = 0.5V Vref = 1.0V CR = 1.0V
90 10 1.0 0.5 0.4 0.2 0.2 0.1 -1.3
Logic Block
MD pin current Thermal shutdown temperature *1: Guaranteed design
MD = (Vcc-0.5)V, CR = 1.0V MD = 0.4V, CR = 2.0V
Truth Table
IN 1 H H H H H H H H H H H H L L L L L L X IN 2 L L L L L L H H H H H H H H H H H L X ST H H H H H H H H H H H H H H H H H H L or OPEN VI H H H L L L H H H L L L H H L L X X X MD L M H L M H L M H L M H L M L M H X X OUT H H H H H H L L L L L L L L L L L OFF OFF OUT- L L L L L L H H H H H H L L L L L OFF OFF Operating mode Forward, 2/5 times, FAST Forward, 2/5 times, MIX Forward, 2/5 times, SLOW Forward, 1/5 times, FAST Forward, 1/5 times, MIX Forward, 1/5 times, SLOW Reverse, 2/5 times, FAST Reverse, 2/5 times, MIX Reverse, 2/5 times, SLOW Reverse, 1/5 times, FAST Reverse, 1/5 times, MIX Reverse, 1/5 times, SLOW Brake, 2/5 times, FAST Brake, 2/5 times, MIX Brake, 1/5 times, FAST Brake, 1/5 times, MIX Brake, no current limiting Output OFF Standby mode (circuit OFF)
Except for MD pin, Low at input OPEN
MD M: determined by external voltage No. 6192-2/7
LB1947
Pin Description
Pin number 1 3 2 4 5 8 9 Pin name OUTA- OUTA E VI ST IN1 IN2 Equivalent circuit Output pin Sense voltage control pin VI High : sense voltage is 2/5 of VREF Low : sense voltage is 1/5 of VREF 100A ST High : circuit operation ON Low : standby mode 50k IN1 High : rotation mode Low : brake mode IN2 High : reverse mode Low : forward mode Motor power supply voltage Logic power supply voltage Output current setting reference pin Setting range: 0 to (Vcc-2V) Pin function
VCC
4
VI
40k
A12583
6 7 10
VBB VCC VREF
VCC 5A
3s
1s
300
10 VREF
A12584
11 12
CR MD
13
GND
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
LB1947
Block Diagram
OUTA 3 1 OUTA- 6 VBB
MD 12 IN1 I N2 ST VI 8 9 5 4
7
VCC
Control logic circuit
Thermal shutdown circuit UVLO VREF 10 Current select circuit One-shot multiblanking time
GND 13
11 CR
2 E
Pin Assignment
LB1947
1
2
3
4
5
6
7
8
9
10
11
12
13
VCC
OUTA-
IN2
E
OUTA
VI
IN1
VREF
GND
ST
VBB
CR
MD
No. 6192-4/7
LB1947
Sample Application Circuits 1. Forward/reverse motor with current limiter
24V
OUT * Schottky barrier type for external diodes. 3
M
OUT-
1
6 VBB
MD 12 IN1 IN2 ST VI 8 9 5 4 Control logic circuit
VCC 7
5V
VREF 10 Current select circuit GND 13
Thermal shutdown circuit UVLO One-shot multiblanking time
RE
CR 11
2
E
Limiter current setting method
I = VREF/ (5 x RE)
Mode Reverse Forward Brake Output OFF Standby mode
IN1 H H L L -
IN2 H L H L -
ST H H H H L
OUT L H L OFF OFF
OUT- H L L OFF OFF
No. 6192-5/7
LB1947
2. Forward/reverse motor
24V
OUT * Schottky barrier type for external diodes. 3
M
OUT-
1
6 VBB
MD 12 IN1 IN2 ST VI 8 9 5 4 Control logic circuit
VCC 7
5V
VREF 10 Current select circuit GND 13
Thermal shutdown circuit UVLO One-shot multiblanking time
CR 11
2
E
IN1 H H L L -
IN2 H L H L -
ST H H H H L
OUT L H L OFF OFF
OUT- H L L OFF OFF
Mode Reverse Forward Brake Output OFF Standby mode
No. 6192-6/7
LB1947
3. PWM current control forward/reverse motor (MIX DECAY)
24V
OUT * Schottky barrier type for external diodes. 3
M
OUT-
1
6 VBB
MD 12 IN1 IN2 ST VI 8 9 5 4 Control logic circuit
VCC 7
5V
VREF 10 Current select circuit GND 13
Thermal shutdown circuit UVLO One-shot multiblanking time
RE
CR 11
2
E
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. PS No. 6192-7/7

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