Halogen and Antimony Free. “Green” Device (Note 3)
Applications
•
•
•
•
5V/ 9V/ 12V/ 15V Min. BLDC Cooling Fans and Motors
Netbook/ Notebook and Desktop BLDC Fans
Instruments Cooling Fans
Medium Voltage/ Low Power BLDC Motors
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
4. C1 is for power stabilization and to strengthen the noise immunity; the recommended value is 2.2µF. The value of capacitor can be optimized depending
on the operating mode, motor voltage and the motor current. For PWM speed control mode, with datasheet current capability, the recommended
capacitor value is 2.2µF, for lower motor current 1µF and higher should be used. If PWM speed control function is not used (PWM pin tied high or not
connected) the capacitor value can be reduced towards 0.1µF. The value of the C1 should be checked in the motor design in its operating conditions if it
is reduced from the recommended value of 2.2µF.
5. The AH5773 has an open-drain tachometer FG output that follows the magnetic change frequency. Typically a pull-up resistor of 10kΩ is recommended
from FG pin to the supply voltage.
Pin Descriptions
Package Type: MSOP-8EP
Pin Number
1
2
3
4
5
6
7
8
Pad
Note:
Pin Name
FG
PWM
O2
GND
O1
V
DD
NC
NC
Pad
Description
Frequency Generator (FG) - The FG output is the same as the magnetic change frequency
PWM signal input pin for speed control
Output drive sourcing & sinking pin
Ground pin
Output drive sourcing & sinking pin
Power supply input pin
No connection (Note 6)
No connection (Note 6)
Exposed pad for thermal dissipation. It can be connected to GND or left open circuit.
6. NC is “No Connection” pin and is not connected internally. This pin can be left open or tied to ground.
Package Type: U-DFN2020-6
Pin Number
1
2
3
4
5
6
Pad
Pin Name
PWM
V
DD
O2
GND
O1
FG
Pad
PWM signal input pin for speed control
Power supply input pin
Output drive sourcing & sinking pin
Ground pin
Output drive sourcing & sinking pin
Frequency Generator (FG) - The FG output is the same as the magnetic change frequency
Exposed pad for thermal dissipation. It can be connected to GND or left open circuit.
7. Stresses greater than the 'Absolute Maximum Ratings' specified above may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be
affected by exposure to absolute maximum rating conditions for extended periods of time.
8. The absolute maximum V
DD
of 24V is a transient stress rating and is not meant as a functional operating condition. It is not recommended to operate the
device at the absolute maximum rated conditions for any period of time.
9. For thermal de-rating curves under different PCB size and layout conditions, see thermal performance section.
10. MSOP-8EP exposed pad soldered to minimum recommended landing pads (see Package Outline Dimension section) on 2in x 2in two-layer 2oz copper
FR4 PCB (1.6mm thickness) with four thermal vias in exposed PADs to the copper flood on the bottom layer. See thermal performance section.
11. U-DFN2020-6 exposed pad soldered to minimum recommended landing pads (see Package Outline Dimension section) on 1in x 1in two-layer 2oz
copper FR4 PCB (1.6mm thickness) with two thermal vias in exposed PADs to the copper flood on the bottom layer. See thermal performance section.
Recommended Operating Conditions
Symbol
V
DD
T
A
Characteristic
Supply Voltage
Operating Temperature Range
Operating
Operating
Conditions
Min
2.4
-40
Max
18
+105
Unit
V
°C
Electrical Characteristics
(Note 12) (@T
A
= +25°C, V
DD
= 12V, unless otherwise specified.)
Symbol
I
DD
I
DD_STNDBY
V
OV_TH
V
OV_RLTH
Characteristics
Supply Current
Standby Supply Current
Over Voltage Protection Threshold for
Shutdown to Standby Mode
Over Voltage Release Threshold
Conditions
No Load, PWM switching or high
PWM pin = Logic Low (GND) for >65ms
Voltage increasing
Voltage decreasing
V
DD
= 12V, I
OUT
= 500mA
V
DD
= 12V, I
OUT
= 500mA
T
A
= -40°C to +105°C
V
DD
= 3V, I
OUT
= 300mA
V
DD
= 3V, I
OUT
= 300mA
T
A
= -40°C to +105°C
V
DD
= 12V, I
OUT
= 500mA
V
DD
=12V, I
OUT
= 500mA
T
A
= -40°C to +105°C
V
DD
= 3V, I
OUT
= 300mA
V
DD
=3V, I
OUT
= 300mA
T
A
= -40°C to +105°C
Min
–
–
19
18
V
DD
-0.6
V
DD
-0.7
Typ
3.17
100
21
20
V
DD
-0.36
V
DD
-0.36
Max
4.5
–
23
22
–
–
–
–
0.35
0.5
0.24
0.32
Unit
mA
µA
V
V
V
V
V
V
V
V
V
V
V
OH
Output Voltage High
V
DD
-0.32 V
DD
-0.23
V
DD
-0.40 V
DD
-0.23
–
–
–
–
0.27
0.27
0.18
0.18
V
OL
Output Voltage Low
Note:
12. Typical data is measured at T
A
= +25°C, V
DD
= 12V. The maximum and minimum parameter values over operating temperature range are not tested in
production, they are guaranteed by design, characterization and process control.
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