Ordering number : EN7109A
Monolithic Digital IC
LB11826
For OA Products
Three-Phase Brushless Motor Driver
Overview
The LB11826 is a three-phase brushless motor driver that is optimal for driving drum and paper feed motors in laser
printers and plain paper copiers. This IC adopts a direct PWM drive technique for minimal power loss. Flexible control of
motor speed in response to an externally provided clock frequency (corresponding to the FG frequency) can be
implemented by using the LB11826 in conjunction with the Sanyo LB11825M.
Features
• Three-phase bipolar drive (30V, 2.5V)
• Direct PWM drive
• Built-in low side inductive kickback absorbing diode
• Speed discriminator + PLL speed control
• Speed locked state detection output
• Built-in forward/reverse switching circuit
• Full complement of built-in protection circuits, including current limiter circuit, thermal protection circuit, and motor
constraint protection circuit.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Supply voltage
Output current
IO max
Conditions
VCC max
Allowable power dissipation
Ratings
Unit
30
T ≤ 500ms
Pd max1
Independent IC
Pd max2
When infinitely large heat sink
V
2.5
A
3
W
20
W
Operating temperature
Topr
-20 to +80
°C
Storage temperature
Tstg
-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.
71608 MS PC/O0503AS (OT) No.7109-1/11
