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PDF LB11876 Data sheet ( Hoja de datos )
| Número de pieza | LB11876 | |
| Descripción | Monolithic Digital IC | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : EN8317
www.datasheet4u.com
LB11876
Monolithic Digital IC
For Polygonal Mirror Motors
Three-Phase Brushless Motor Driver
Overview
The LB11876 is a 3-phase brushless motor driver developed for driving the polygonal mirror motor in plain-paper copiers
and similar products. It can support any motor voltage and motor current required by the use of appropriate external
components.
The LB11876 adopts direct PWM drive to achieve drive with minimal power loss.
Functions
• This is a version of the LB11875 with a modified constraint protection function.
• Three-phase bipolar drive (direct PWM)
• PLL speed control circuit
• Dedicated external clock
• Clock divider switching function
• Hall sensor FG support
• Short-circuit braking function
• Built-in current limiter, thermal protection, constraint protection, and undervoltage protection circuits
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Supply voltage
Input current
Output current
LVSD pin apply voltage
Symbol
VCC max
I13 max
IO max
LVSD max
Conditions
V13 pin
UL pin, VL pin, WL pin, UH pin, VH pin, and WH pin
Ratings
Unit
18 V
5 mA
30 mA
18 V
Continued on next page.
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.
41807 TI PC B8-8869 No.8317-1/15
1 page  
www.datasheet4u.com
Package Dimensions
unit : mm (typ)
3247A
36
19
LB11876
Pd max – Ta
2.0
Specified circuit board : 114.3×76.1×1.6mm3
1.5
1.36W
glass epoxy board
1
0.3
15.0
(0.7) 0.8
18
0.2
1.0
0.62W Independent IC
0.5
0.761W
0.347W
0
– 20 0 20 40 60 80 100
Ambient temperature, Ta – °C
SANYO : SSOP36(275mil)
Three-Phase Logic Truth Table (The input "H" state is the state where IN+ > IN-)
F/R= "L"
F/R ="H"
Output
IN1
IN2
IN3
IN1
IN2
IN3
Source
Sink
1 H L H L H L VH UL
2 H L L L H H WH UL
3 H H L L L H WH VL
4 L H L H L H UH VL
5 L H H H L L UH WL
6 L L H H H L VH WL
S/S pin
Input state
High or open
Low
State
Stop
Start
BRSEL pin
Input state
High or open
Low
During deceleration
Free running
Short-circuit braking
CLKSEL pin
Input state
High or open
Low
Clock divisor
1
2
fFG = fCLK ÷ divisor
No.8317-5/15
5 Page 
www.datasheet4u.com
Continued from preceding page.
LB11876
Pin No.
Pin
Description
23 WH Outputs (that drive external transistors)
24 WL Duty control is applied to the UH, VH, and WH outputs.
25 VH
26 VL
27 UH
28 UL
VCC
Equivalent Circuit
50kΩ
23 24 25
26 27 28
29
30
IN3-
IN3+
Hall sensor inputs
"H" is the state where IN+ > IN-, and "L" is the reverse
VCC
31 IN2- state.
32
IN2+
If noise on the Hall sensor signals is a problem,
33 IN1- connect capacitors between the IN+ and IN- inputs.
34 IN1+
500Ω
30 32 34
500Ω
29 31 33
35 FGIN- FG input
36 FGIN+ If noise on the FG signal is a problem, the input signal
can be filtered with a capacitor or a capacitor plus
resistor.
VCC
500Ω
35
500Ω
36
No.8317-11/15
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet LB11876.PDF ] | |
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