sa5570n NXP Semiconductors, sa5570n Datasheet - Page 5

• Manufacturer Part Number: sa5570n
• Description: Brushless Dc Motor Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors Linear Products
TYPICAL PERFORMANCE CHARACTERISTICS
August 31, 1994
Brushless DC motor controller
2000
1900
1800
1700
1600
1500
1400
1300
1200
1100
1000
22.0
21.5
21.0
20.5
20.0
19.5
19.0
18.5
18.0
15
14
13
12
11
10
9
18
–60–40 –20
–60 –40 –20 0 20 40 60 80 100 120
NE5570 Oscillator Frequency
NE5570 Oscillator Output
19
FREQUENCY (kHz)
vs Temperature
0
I
Pulse Width
CC
TEMP (
TEMP (
20 40
vs V
20
OFF
ON
o
o
C)
V
CC
C)
60 80 100 120
CC
V
T
CC
A
= 12V
21
= 25
= 12V
o
C
22
10
10
10
10
10
10
800
700
600
500
400
300
200
–1
–2
–3
–4
100
1
0
80
60
40
20
–60 –40 –20 0
–60–40 –20 0
0
10
R
R
R
–2
T
T
T
= 10k
= 20k
= 100K
NE5570 Logic Threshold
OSCILLATOR FREQUENCY (kHz)
Voltage vs Temperature
T
10
A
Oscillator Frequency
NE5570 Op Amp Gain
–1
= 25
vs Temperature
vs R
o
1155
C
TEMP (
TEMP (
10
20 40 60 80 100 120
20 40 60 80 100 120
0
T
and C
o
o
C)
C)
10
1
V
T
CC
V
CC
R
R
R
R
R
10
= 12V
T
T
T
T
T
= +5V
2
= 5k
= 3k
= 2.49k
= 2k
= 1k
10
3
.5000
/div
5.000
.0000
600
500
400
300
200
100
9.000
0
–60–40 –20 0
NE5570 Oscillator Frequency
NE5570 Current Sense
Comparator Threshold
V1
vs Supply Voltage
vs Temperature
V
TEMP (
.6000/div
CC
20 40 60 80 100 120
NE/SA5570
= (V)
Product specification
o
C)
T
T
A
T
A
A
V
= +125
= +25
CC
= 55
(V)
= 12V
o
o
o
C
C
C
15.00