LB1929 Datasheet, PDF (1/11 Pages) Sanyo Semicon Device – Three-Phase Brushless Motor Driver for OA Products

Ordering number : EN7099A
LB1929
Monolithic Digital IC
For Office Automation Equipment
3-phase Brushless Motor Driver
http://onsemi.com
Overview
The LB1929 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, 3.5A)
• 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
Unit
30
V
3.5
A
3
W
20
W
-20 to +80
°C
-55 to +150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Semiconductor Components Industries, LLC, 2013
May, 2013
D0308 MS JM/71202RM(OT) No.7099-1/11