Three-Phase Brushless Motor Driver
Ordering number : ENN7099
Monolithic Digital IC
LB1929
Three-Phase Brushless Motor Driver for OA Products
Overview
Th...
Description
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.
Package Dimensions
unit: mm 3147B-DIP28H
[LB1929]
28 15
R1.7
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.
1
20.0 26.75 4.0
12.7 11.2
8.4
14
(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 T ≤ 500 ms Independent IC Infinitely large heat sink Conditions Ratings 30 3.5 3 20 –20 to +80 –55 to +150 Unit V A W W °C °C
Allowable Operating Range at Ta = 25°C
Parameter Su...
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