Ah2984, Typical applications circuit, Pin descriptions – Diodes AH2984 User Manual
Page 2
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AH2984
Document number: DS31698 Rev. 4 - 2
2 of 10
December 2013
© Diodes Incorporated
AH2984
Typical Applications Circuit
(Note 4)
(1) For SIP-4
Vdd
GND
12V
L1
L2
AH2984
1
2
3
4
D2
C
D1
Vdd DO DOB GND
12V Brushless DC Fan
(2) For SOT89-5
AH2984
1
3
2
Vdd (12V)
L1
L2
D2
5
4
GND
C
D1
NC
DOB
Vdd
DO
GND
GND
12V Brushless DC Fan
Note:
4. D1 (Zener Diode) and Capacitor C are for power stabilization. Recommended value of C is 1μF/ 50V (E-Cap). Diode D2 is optional and helps
to protect the device and fan coils from reverse power conditions. The AH2984 also includes an internal reverse blocking diode at V
DD
pin.
Pin Descriptions
Pin Name
SIP-4
SOT89-5
Description
V
DD
1 1
Input
Power
DO 2 3
Output
Pin
DOB 3 4
Output
Pin
GND 4 2
Ground
NC — 5
No
Connection
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