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 switchi...
LB1929: 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 discriminat...
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Motor / Motion / Ignition Controllers & Drivers Step Motor Driver IC for 2-phase Excit
• 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.
Parameter |
Symbol |
Conditions |
Ratings |
Unit |
Maximum supply voltage |
VCC max |
30 |
V | |
Output current |
IO max |
t 500 ms |
3.5 |
A |
Allowable power dissipation 1 |
Pd max*1 |
Independent IC |
3 |
W |
Allowable power dissipation 2 |
Pd max*2 |
Infinitely large heat sink |
20 |
W |
Operating temperature |
Topr |
-20to+80 |
°C | |
Storage temperature |
Tstg |
-55to+150 |
°C |
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.