LB1928 Datasheet, PDF (1/11 Pages) Sanyo Semicon Device – Three-Phase Brushless Motor Driver for Office Automation Equipment

Ordering number : ENN6198A
LB1928
Monolithic Digital IC
LB1928
Three-Phase Brushless Motor Driver
for Office Automation Equipment
Overview
The LB1928 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.
Package Dimensions
unit: mm
3147B-DIP28H
[LB1928]
28
15
R1.7
Functions and Features
• Three-phase bipolar drive (30V, 3.1A)
• 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.
1
20.0
14
27.0
1.93
1.78
0.6
1.0
SANYO : DIP28H
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Maximum output current
Allowable power dissipation 1
Allowable power dissipation 2
Operating temperature
Storage temperature
Symbol
Vcc max
I_O max
Pd max 1
Pd max 2
Topr
Tstg
Conditions
T ≤ 500 ms
IC only
With an arbitrary large heat sink
Allowable Operating Ranges at Ta = 25°C
Parameter
Symbol
Power supply voltage range 1
Vcc
Regulator voltage output current
LD output current
I_REG
I_LD
Conditions
Ratings
Unit
30
V
3.1
A
3W
20 W
–20 to +80 °C
–55 to +150 °C
Ratings
Unit
9.5 to 28
V
0 to –20 mA
0 to 15 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
D1099TH(KI)/73099RM(KI) No. 6198-1/11