LB11685VH

Pin Function

Pin No.

Pin name

Function

Equivalent circuit

16

12

14

UOUT

WOUT

VOUT

Each output pin of three phases.

20

PGND

GND pin in the output part.

This pin is connected to GND. The SGND pin is also

connected to GND

9

RF

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.

21

MCOM

Motor coil midpoint input pin.

The coil voltage waveform is detected based on this

voltage.

22

SGND

Ground pin (except the output part)

This pin is connected to GND.

The PGND pin is also connected to GND.

23

FG

FG out made by back EMF pin.

It synchronizes FG out with inverted V-phase.

When don’t use this function, open this pin.

25

RD

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.

27

VCO

PLL output pin and VCO input pin.

To stabilize PLL output, connect a capacitor between this

pin and GND.

1

CX

VCO oscillation output pin.

Operation frequency range and minimum frequency are

determined by the capacity of the capacitor connected to

this pin.

Pin No.9

Pin No.20

Pin No.16,14,12

Pin No.21

SGND

SGND SGND

VCC

VCC

SGND

SGND

Pin No.23

No.25

SGND

SGND

Pin No.27

VCC

SGND

SGND

VREG

VREG

VREG

Pin No.1

VCC

SGND

SGND

VREG

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