LB1821 Sanyo, LB1821 Datasheet - Page 14

• Manufacturer Part Number: LB1821
• Description: Power Brushless Motor Pre-Driver IC for OA Equipment
• Manufacturer: Sanyo

Continued from preceding page.
Pin No.
19
20
21
22
23
24
25
26
28
30
27
29
31
32
IN1
IN1
IN2
IN2
IN3
IN3
V
WH
WL
RF
UH
VH
Pin
UL
VL
CC
+
+
+
–
–
–
Hall inputs
High is defined as IN
An amplitude of 100 mV p-p (differential) or more is
desirable in the Hall signals. Connect capacitors between
the IN
problems.
Output current detection
Connect a resistor between this pin and ground.
The output limitation maximum current, I
0.52/R
This IC implements duty control using output signal PWM.
These are open collector sink outputs.
Outputs (Fixed current source outputs)
Power-supply voltage
Connect a capacitor between this pin and ground for power
supply stabilization.
f
+
by this resistor.
and IN
–
pins if noise on the Hall signals causes
+
> IN
–
, and low as the opposite.
Functions
OUT
, is set to be
LB1821M
Equivalent circuit
Continued on next page.
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