LB1928_08 Datasheet, PDF (1/11 Pages) Sanyo Semicon Device – For Office Automation Equipment 3-phase Brushless Motor Driver

Ordering number : EN6198C
LB1928
Monolithic Digital IC
For Office Automation Equipment
3-phase Brushless Motor Driver
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.
Features
• 3-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.
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
Unit
30
V
3.1
A
3
W
20
W
-20 to +80
°C
-55 to +150
°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.
D0308 MS JM/O0702AS(OT)/D1099TH(KI)/73099RM(KI) No.6198-1/11