lb11610p Sanyo Semiconductor Corporation, lb11610p Datasheet - Page 9

• Manufacturer Part Number: lb11610p
• Description: Three-phase Brushless Motor Driver
• Manufacturer: Sanyo Semiconductor Corporation

Continued from preceding page.
Pin No.
25
30
26
27
28
33
31
32
34
36
29
35
GND(S)
FRAME
W OUT
U OUT
V OUT
RF(S)
V CC
F/R
Pin
NC
RF
VS
Output current detection pins
Current feedback is applied to the control block by
connecting the resistor Rf between this pin and ground.
The low side saturation prevention circuit and the torque
ripple correction circuit operate based on this voltage as
well. In particular, note that the low side saturation
prevention operation in the high-current region may be
degraded if the value of this resistor is reduced radically.
Also note that the RF pin and the RF(S) pin must be
connected together.
Motor drive output pins
U phase output (A spark killer diode, Di, is built in.)
V phase output (A spark killer diode, Di, is built in.)
W phase output (A spark killer diode, Di, is built in.)
Output block power supply
RF sensing pin
(This pin must not be left open.)
Ground sensing pin
The influence of the ground shared impedance on Rf can
be excluded by connecting this pin to ground in the
vicinity of the Rf resistor side of the motor ground wiring
including Rf. (This pin must not be left open.)
Power supply for all circuit other than the output
block
This level must be stabilized so that ripple and noise do
not enter the IC.
Forward/reverse control pin
When low, the motor turns in the forward direction, and
when high or open, the motor turns in the reverse
direction.
That is, the forward/reverse direction is selected with this
pin voltage. (Vth = 2.5V typical at V CC = 5V)
No connection
This pin can be used for wiring connections.
Frame connection pin
The FRAME pin is connected to the metal parts on the
package front internal in the package.
Description
LB11610P
1/2
V CC
V CC
31
V CC
200Ω
Equivalent Circuit
30kΩ
VS
200Ω
25
33
30
V CC
50kΩ
10μA
V CC
300Ω
26 27 28
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