LB11923V_06 Datasheet, PDF (1/20 Pages) Sanyo Semicon Device – Three-Phase Brushless Motor Driver

Ordering number : ENN7498A
SANYO Semiconductors
DATA SHEET
LB11923V ^{Monolithic Digital IC}
Three-Phase Brushless Motor Driver
Overview
The LB11923V is a pre-driver IC designed for variable-speed control of 3-phase brushless motors. It can be used to
implement a motor drive circuit with the desired output capacity (voltage, current) by using discrete transistors for the
output stage. It implements direct PWM drive for minimal power loss. Since the LB11923V includes a built-in VCO
circuit, applications can control the motor speed arbitrarily by varying the external clock frequency.
Function
• Direct PWM drive output
• Speed discriminator + PLL speed control circuit
• Speed lock detection output
• Built-in crystal oscillator circuit
• Forward/reverse switching circuit
• Braking circuit (short braking)
• Full complement of on-chip protection circuits, including lock protection, current limiter, and
thermal shutdown protection circuits.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Maximum supply voltage
Maximum input current
Output current
Allowable power dissipation 1
V_CC max
I_REG max
I_O max
Pd max1
V_REG pin
UH, VH, WH, UL, VL, and WL outputs
Independent IC
Allowable power dissipation 2
Pd max2 * When mounted on the specified PCB
Operating temperature
Topr
Storage temperature
Tstg
* Specified PCB : 114.3×76.1×1.6 mm glass epoxy PCB
Ratings
Unit
8
V
2
mA
30
mA
0.62
W
1.79
W
–20 to +80
°C
–55 to +150
°C
Any and all SANYO Semiconductor products described or contained herein do not have specifications
that can handle applications that require extremely high levels of reliability, such as life-support systems,
aircraft's control systems, or other applications whose failure can be reasonably expected to result in
serious physical and/or material damage. Consult with your SANYO Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor assumes no responsibility for equipment failures that result from using products
at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor
products described or contained herein.
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