AH277AZ4-CG1 Просмотр технического описания (PDF) - BCD Semiconductor
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AH277AZ4-CG1 Datasheet PDF : 10 Pages
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COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Typical Performance Characteristics (Continued)
Data Sheet
AH277A
14
12
10
8
V =3.5V
CC
V =14V
CC
V =20V
CC
6
-20
0
20
40
60
80
T (oC)
A
600
550
I =300mA
O
I =350mA
O
500
I =400mA
O
V =14V
CC
450
400
350
300
250
200
-20
0
20
40
60
80
T (oC)
A
Figure 11. Supply Current vs. Ambient Temperature Figure 12. Saturation Voltage vs. Ambient Temperature
Typical Applications
D1
AH277A
VCC DO DOB GND
1234
COIL1 COIL2
VCC
R1
470
+ C1
2.2µF
R2
470
+ C2
2.2µF
Figure 13. Typical Application Circuit with D1(Note 2)
Note 2: AH277A has Reversed Supply Voltage Protection. For DC fan application, sometimes need to test power
reverse connection condition. The internal diode only protects chip-side but not for coil-side. It is recommended to
add one external diode D1 in application to block the reverse current from coil-side as shown in Figure 13.
Oct. 2009 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
8
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