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PDF LB1927 Data sheet ( Hoja de datos )
| Número de pieza | LB1927 | |
| Descripción | 3-phase Brushless Motor Driver | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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www.DataSheet.co.kr
Ordering number : EN6197C
LB1927
Monolithic Digital IC
For Office Automation Equipment
3-phase Brushless Motor Driver
Overview
The LB1927 is a 3-phase brushless motor driver well suited for drum and paper feed motors in laser printers, plain-paper
copiers and other office automation equipment. Direct PWM drive allows control with low power losses. Peripheral circuitry
including speed control circuit and FG amplifier is integrated, thus allows drive circuit to be constructed with a single chip.
Features
• 3-phase bipolar drive (30V, 2.5A)
• Direct PWM drive technique
• Built-in diode for absorbing output lower-side kickback
• Speed discriminator and PLL speed control
• Speed lock detection output
• Built-in forward/reverse switching circuit
• Built-in protection circuitry includes current limiter, overheat protection, motor restraint protection, etc.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Maximum supply voltage
Maximum output current
Allowable power dissipation 1
VCC max
IO max
Pd max 1
T ≤ 500ms
Independent IC
Allowable power dissipation 2
Pd max 2
With an arbitrary large heat sink
Operating temperature
Topr
Storage temperature
Tstg
Ratings
30
2.5
3
20
-20 to +80
-55 to +150
Unit
V
A
W
W
°C
°C
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. 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.
N1908 MS JM/O0702AS(OT)/D1099TH(KI)/62599RM(KI) No.6197-1/11
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
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LB1927
Block Diagram and Sample Application Circuit
LD
FGIN-
FGIN+
FG AMP
–
FGOUT
+
LD POUT
LOCK
DET
DOUT INTIN
INTOUT CSD
– INT AMP
VREG/2 +
CSD
CIRCUIT
PWM
OSC
–
+
VREG
SPEED
DISCRI
TSD
CURR
LIM
FG
RST
PLL
COMP
GND1
VREF
ECL
1/16
1/512
VREF
BGP
LOGIC
DRIVER
Xtal
OSC
S/S F/R
5VREG
HALL HYS AMP
PWM
VCC
Rf
VM
VCC
OUT1
OUT2
OUT3
XI
XO S/S
F/R VREG
IN1 IN2 IN3
GND2
No.6197-5/11
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
LB1927
11. Power supply stabilization
Because this IC provides a high output current and uses a switching drive technique, power supply line fluctuations
can occur easily. Therefore, a capacitor of sufficient capacitance (several ten µF or higher) must be connected
between the VCC pin and ground to assure stable operation. The ground connection of this capacitor must be
connected to the GND2 pin, which is the power block ground, at a point as close as possible to the IC. If, due to
problems associated with the heat sink, the (electrolytic) capacitor cannot be connected near the this pin, a ceramic
capacitor of about 0.1µF must be connected near the pin.
Since the likelihood of power line fluctuation increases if diodes are inserted in the power supply lines to prevent
destruction of the IC if power is connected with reverse polarity, a larger capacitance will be required.
12. VREG stabilization
A capacitor (about 0.1µF) must be connected to the VREG pin (the 5V regulator output), which functions as the
control circuit power supply, for stabilization. The ground side of this capacitor must be connected to the GND1 pin
with a lead that is as short as possible.
13. Integrating amplifier related component values
The external components used in the integrating amplifier must be located as close as possible to the IC to
minimize the circuit’s susceptibility to noise. These components must be located as far as possible from the motor.
SANYO Semiconductor Co.,Ltd. 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 Semiconductor Co.,Ltd.
products described or contained herein.
SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all
semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents 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 Semiconductor Co.,Ltd. products described or contained herein are
controlled under any of applicable local export control laws and regulations, such products may require 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 consent of SANYO Semiconductor 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 Semiconductor Co.,Ltd. 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.
Upon using the technical information or products described herein, neither warranty nor license shall be granted
with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's
intellctual property rights which has resulted from the use of the technical information and products mentioned
above.
This catalog provides information as of November, 2008. Specifications and information herein are subject to
change without notice.
PS No.6197-11/11
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet LB1927.PDF ] | |
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