lb11620gp Sanyo Semiconductor Corporation, lb11620gp Datasheet - Page 5

• Manufacturer Part Number: lb11620gp
• Description: Brushless Motor Driver
• Manufacturer: Sanyo Semiconductor Corporation

• Three-Phase Logic Truth Table (IN = “H” indicates the state where IN + > IN - )
• PWMIN pin
If the PWM pin is not used, the input must be held at the low level.
• N1 pin
Explanation of Pin Functions
Pin No.
1, 24
3, 2
5, 4
10
11
12
13
14
15
16
17
22
20
18
23
21
19
1
2
3
4
5
6
6
7
8
9
High or open
High or open
Input state
Input state
Low
Low
IN1 + , IN1 -
IN2 + , IN2 -
IN3 + , IN3 -
IN1
H
H
H
L
L
L
PWMIN
VREG
PWM
GND
CSD
V CC
F/R
WH
Pin
RD
HP
EI+
UH
VH
WL
N1
RF
UL
VL
F/R = “L”
IN2
H
H
H
L
L
L
Three Hall sensor synthesized output
Hall sensor inputs from each motor phase.
The logic high state indicates that IN + > IN - .
If inputs are provided by a Hall effect sensor IC, the common-mode input range is expanded by biasing either the + or -
input.
Functions as both the PWM oscillator frequency setting pin and the initial reset pulse setting pin. Connect a capacitor
between this pin and ground.
Lock (motor constrained) detection state output. This output is turned on when the motor is turning and off when the lock
protection function detects that the motor has been stopped. This is an open collector output.
Sets the operating time for the lock protection circuit.
Connect a capacitor between this pin and ground. Connect this pin to ground if the lock protection function is not used.
PWM pulse signal input. The output goes to the drive state when this pin is low and to the off state when this pin is high
or open. To use this pin for control, a CTL amplifier input such that the TOC pin voltage goes to the 100% duty state
must be provided.
Forward/reverse control input
Hall signal output (HP output). This provides either a single Hall sensor output or a synthesized 3-sensor output.
Hall signal output (HP output) selection
CTL amplifier + (no inverting) input. The PWMIN pin must be held at the low level to use this input for motor control
5V regulator output (Used as the control circuit power supply. A low-voltage protection circuit is built in.)
Connect a capacitor between this pin and ground for stabilization.
Power supply. Connect a capacitor between this pin and ground to prevent noise and other disturbances from affecting
this IC.
Ground
Output current detection. The current detection resistor (Rf) voltage is sensed by the RF pin to implement current
detection.
The maximum output current is set by RF to be IOUT = 0.25/Rf.
Outputs (PWM outputs).
These are push-pull outputs.
Outputs
These are push-pull outputs.
Single Hall sensor output
Output off
Output on
HP output
IN3
H
H
H
State
L
L
L
LB11620GP
IN1
H
H
H
L
L
L
F/R=“H”
IN2
H
H
H
L
L
L
Description
IN3
H
H
H
L
L
L
PWM
WH
WH
VH
UH
UH
VH
Output
WL
WL
UL
UL
VL
VL
No.A1913-5/13