LB1660 Sanyo, LB1660 Datasheet - Page 6

• Manufacturer Part Number: LB1660
• Description: 2-Phase Unipolar Brushless Motor Drivers
• Manufacturer: Sanyo

Electrical Characteristics at Ta = 25°C
[Design Specifications]
(1) Supply voltage
.
(2) Hall input offset voltage
(3) Output transistor
Output limit voltage 1
Output limit voltage 2
Output saturation voltage
V
Amp input offset voltage
Amp input bias current
Comparator input bias current
Comparator input threshold
voltage
Consideration given to surge voltage
IN
The hall amp and control block of the LB1660 series are supplied with power from the on-chip parallel regulator. Set the DC
resistance R1 across V
fan motor.
V
The current flowing into V
The maximum allowable current at V
calculated using the following equation is allowable in applications where the IC is used.
The gain in transmission from the hall input pin to the output pin is 100 dB or greater. The offset voltage of the hall input
amp is 7 mV; therefore, the hall element output must be set with the offset voltage ( 7 mV) considered.
When external capacitors are connected to the output stages, the capacitance should not exceed 10 µF. Since the LB1660N,
1664N have a protect zener diode across collector and base, the kickback voltage induced by the coil is cut at V
typ.
input voltage
IN
is 6.7 V typ at I
Parameter
Output Current
Output saturation voltage
I
Vsurge = V
CC
=
Ambient temperature, Ta – °C
V
CC
CC
IN
CC
R1
= 7 mA.
– V
+ R1
and V
Pd max – Ta
IN
IN
is calculated using the equation shown below.
V
V
V
Symbol
IN
200 mA .................................... 2
O
O
O
V
V
Voff
V
(sat) 1
(sat) 2
(sat) 3
V
I
I
Osus
BA
BC
OR
so that I
TH
IN
.............................................. 1
IN
LB1660N, 1661, 1664N, 1665
I
V
O
pin is 200 mA. Therefore, the design is made so that a surge voltage of positive value
Osat
= 1.5 A max
CC
I
I
I
I
I
I
O
O
O
O
O
CC
= 2.0 V/1.5 A
=0.1 A, both V
= 0A, both V
= 0.5 A, both V
= 1.0 A, both V
= 1.5 A, both V
flowing into the V
= 7.0 mA
OUT
OUT
OUT
OUT
OUT
-1, 2
Conditions
1, 2
IN
1, 2
1, 2
1, 2
pin becomes 7 to 50 mA in the supply voltage range of a
–250
min
6.4
−7
65
80
0.8V
0.95
1.15
1.40
6.7
typ
IN
0
max
1.20
1.50
2.00
OLM
250
7.0
+7
No.2551-6/9
= 59 V
Unit
mV
nA
nA
V
V
V
V
V
V
V