lb11620t Sanyo Semiconductor Corporation, lb11620t Datasheet - Page 5

• Manufacturer Part Number: lb11620t
• Description: Brushless Motor Driver
• Manufacturer: Sanyo Semiconductor Corporation

Pin Functions
Pin No.
12, 11
14, 13
10, 9
15
16
17
18
19
20
21
22
23
24
1
2
7
5
3
8
6
4
IN1 + , IN1 -
IN2 + , IN2 -
IN3 + , IN3 -
PWMIN
VREG
PWM
GND
CSD
V CC
WH
F/R
Pin
UH
VH
WL
RD
HP
EI+
RF
UL
VL
N1
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.
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 + (noninverting) 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.
LB11620T
Description
No.A0662-5/11