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PDF LB1929 Data sheet ( Hoja de datos )
| Número de pieza | LB1929 | |
| Descripción | Three-Phase Brushless Motor Driver for OA Products | |
| Fabricantes | Sanyo | |
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Ordering number : ENN7099
Monolithic Digital IC
LB1929
Three-Phase Brushless Motor Driver for OA Products
Overview
The LB1929 is a three-phase brushless motor driver that is
optimal for driving the drum and paper feed motors in
laser printers and plain-paper copiers. It can provide drive
with minimal power loss due to direct PWM drive
technique, features on-chip peripheral circuits such as a
speed control circuit and an FG amplifier, and can
implement a drive circuit in a single chip.
Functions and Features
• Three-phase bipolar drive (30 V, 3.5 A)
• Direct PWM drive
• Built-in low side output kickback absorption diode
• Control technique that combines a speed discriminator
with PLL speed control
• Speed lock detection output
• Built-in forward/reverse switching circuit
• Full complement of built-in protection circuits,
including current limiter, thermal protection circuit, and
motor lockup protection circuit.
Package Dimensions
unit: mm
3147B-DIP28H
[LB1929]
28 15
R1.7
1 14
20.0
26.75
(1.81)
1.78
0.6 1.0
SANYO: DIP-28H (500 mil)
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Supply voltage
Output current
Allowable power dissipation 1
Allowable power dissipation 2
Operating temperature
Storage temperature
Symbol
VCC max
IO max
Pd max1
Pd max2
Topr
Tstg
Conditions
T ≤ 500 ms
Independent IC
Infinitely large heat sink
Allowable Operating Range at Ta = 25°C
Parameter
Supply voltage range 1
Regulator-voltage output current
LD output current
Symbol
VCC
IREG
ILD
Conditions
Ratings
30
3.5
3
20
–20 to +80
–55 to +150
Unit
V
A
W
W
°C
°C
Ratings
9.5 to 28
0 to –30
0 to 15
Unit
V
mA
mA
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
71202RM (OT) No. 7099-1/12
1 page  
LB1929
Pin Description
Pin No. Symbol
Pin Description
28 OUT1
Motor drive output pin
1 OUT2
Connect the Schottky diode between the output – VCC.
2 OUT3
VCC
3 GND2 Output GND pin
Power and output current detection pins of the output.
Connect a low resistance (Rf) between this pin and VCC.
5 VM
The output current is limited to the current value set with
IOUT = VRF/Rf.
4 VCC Power pin (Other than the output)
Equivalent circuit
300Ω
VM
5
1 2 28
VCC
3
Stabilized power supply output pin (5 V output)
6 VREG Connect a capacitor (about 0.1 µF) between this pin and
GND for stabilization.
6
Pin to set the PWM oscillation frequency.
7 PWM Connect a capacitor between this pin and GND.
This can be set to about 18 kHz with C = 3900pF.
VREG
VREG
Pin to set the operation time of motor lock protection circuit.
8 CSD Connection of a capacitor (about 10 µF) between CSD and
GND can set the protection operation time of about
3.3seconds.
200Ω
2kΩ
7
300Ω
1kΩ
8
Continued on next page.
No. 7099-5/12
5 Page 
LB1929
Equivalent Circuit Block Diagram and Peripheral Circuits
No. 7099-11/12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LB1929.PDF ] | |
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