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PDF LB11685VH Data sheet ( Hoja de datos )
| Número de pieza | LB11685VH | |
| Descripción | 3-phase sensor less Motor driver | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Ordering number : ENA1773A
LB11685VH
Monolithic Digital IC
3-phase sensor less
Motor driver
http://onsemi.com
Overview
The LB11685VH is a three-phase full-wave current-linear-drive motor driver IC. It adopts a sensor less control system
without the use of a Hall Effect device. For quieter operation, the LB11685VH features a current soft switching circuit
and be optimal for driving the cooling fan motors used in refrigerators, etc.
Functions
• Three-phase full-wave linear drive (Hall sensor-less method)
• Built-in three-phase output voltage control circuit
• Motor lock protection detection output
• Built-in thermal shut down circuit
• Built-in current limiter circuit
• Built-in motor lock protection circuit
• FG output made by back EMF
• Beat lock prevention circuit
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
Input applied voltage
Maximum output current
Allowable power dissipation
VCC max
VIN max
IO max *1
Pd max
Mounted on a board *2
19
-0.3 to VCC +0.3
1.2
1.4
V
V
A
W
Operating temperature
Topr
-40 to 85
°C
Storage temperature
Tstg
-55 to 150
°C
Junction temperature
Tj max
150 °C
*1: The IO is a peak value of motor-current.
*2: Specified board: 76.1mm × 114.3mm × 1.6mm, glass epoxy board.
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current,
high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Semiconductor Components Industries, LLC, 2013
May, 2013
71812 SY/61610 SY 20100604-S00002 No.A1773-1/7
1 page  
Pin Function
Pin No.
16
12
14
20
Pin name
UOUT
WOUT
VOUT
PGND
9 RF
21 MCOM
LB11685VH
Function
Each output pin of three phases.
GND pin in the output part.
This pin is connected to GND. The SGND pin is also
connected to GND
Pin to detect output current.
By connecting a resistor between this pin and VCC, the
output current is detected as a voltage.
The current limiter is operated by this voltage.
Motor coil midpoint input pin.
The coil voltage waveform is detected based on this
voltage.
22 SGND
23 FG
25 RD
27 VCO
Ground pin (except the output part)
This pin is connected to GND.
The PGND pin is also connected to GND.
FG out made by back EMF pin.
It synchronizes FG out with inverted V-phase.
When don’t use this function, open this pin.
Motor lock protection detection output pin.
Output with L during rotation of motor.
Open during lock protection of motor (High-impedance).
When don’t use this function, open this pin.
PLL output pin and VCO input pin.
To stabilize PLL output, connect a capacitor between this
pin and GND.
Equivalent circuit
Pin No.9
Pin No.16,14,12
Pin No.20
SGND SGND SGND
VCC
VCC
Pin No.21
SGND
SGND
Pin No.23
No.25
SGND
SGND
VREG
VCC
Pin No.27
SGND
VREG
VREG
1 CX
VCO oscillation output pin.
Operation frequency range and minimum frequency are
determined by the capacity of the capacitor connected to
this pin.
SGND
VREG
VCC
Pin No.1
SGND
SGND
Continue to the next page.
No.A1773-5/7
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet LB11685VH.PDF ] | |
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