LB11921T-TLM-E Datasheet, PDF (1/1 Pages) ON Semiconductor – LB11921T: 3-Phase Brushless Motor Driver

Product Overview
LB11921T: 3-Phase Brushless Motor Driver
For complete documentation, see the data sheet
Product Description
LB11921T 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. Because the LB11921T includes an integrated VCO circuit, applications can control the motor
speed arbitrarily by varying the external clock frequency.
Features
• Direct PWM drive output
• Speed discriminator + PLL speed control circuit
• Speed lock detection output
• Integrated VCO 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.
Applications
• Computing & Peripherals
• OA equipment
End Products
• Multi-Function Printer
• PC
Part Electrical Specifications
Product
Compliance Status
LB11921T-MPB-E
Pb-free
Active
LB11921T-TLM-E
Pb-free
Active
Type V_M
Min
(V)
Brus
hless
DC
Brus
hless
DC
V_M
V_CC
Max Min
(V) (V)
4.4
4.4
V_CC I_O
I_O
Step Contr Feed Curre Regu Fault Flyba Pack
Max Max Peak Reso ol back nt lator Dete ck age
(V) (A) Max lution Type Meth Sens Outp ction Prote Type
(A)
od e
ut
ction
8
0.01
Clock
Exter
Loc
TSS
nal
k
OP-
Resis
36
tor
Ove
r-
Cur
rent
The
rma
l
UV
LO
8
0.01
Clock
Exter
Loc
TSS
nal
k
OP-
Resis
36
tor
Ove
r-
Cur
rent
The
rma
l
UV
LO
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Created on: 4/23/2014