AH5792-ZG-7 Diodes Inc, AH5792-ZG-7 Datasheet - Page 2

• Manufacturer Part Number: AH5792-ZG-7
• Description: IC FAN MOTOR DRIVER BLDC SOT553
• Manufacturer: Diodes Inc

Specifications of AH5792-ZG-7

• Applications: Fan Motor Driver, Brushless (BLDC)
• Number Of Outputs: 1
• Current - Output: 148mA
• Voltage - Load: 0.6 V ~ 4.4 V
• Voltage - Supply: 1.8 V ~ 5 V
• Operating Temperature: -40°C ~ 100°C
• Mounting Type: Surface Mount
• Package / Case: SOT-553, SOT-5
• Operating Supply Voltage: 2.5 V or 3.3 V
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 100 C
• Minimum Operating Temperature: - 40 C
• Maximum Output Current: 148 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AH5792-ZG-7DITR

Typical Application Circuit
Notes:
Pin Descriptions
Notes:
AH5792
Document number: DS314641 Rev. 6 - 2
Pin Name
SYSTEM
POWER
Vdd
Vss
FG
NC
O1
O2
1. Reverse connection of power supply may break the device. A countermeasure is needed such as using reverse power protection
2. The FG is half (1/2) the magnetic change frequency.
diode D1 between power supply and Vdd terminal. In such case of using reverse power protection diode D1 because of there is no
way to return current to power supply, please take necessary measures like below.
- Connect Dz (Zener diode) between Vdd and Vss terminal, not to exceed the absolute maximum rating voltage.
- Connect a capacitor C1 between Vdd and Vss terminal, to make the path of return current to power supply.
The AH5792 has an open-drain tachometer FG output that follows the half (1/2) the magnetic change frequency. A pull-up resistor
(10Kohm, typically for System Power = 5V) connected to a supply voltage.
Output driving & sinking pin 1
Power supply pin
Ground pin
Frequency Generator (Note 2)
Output driving & sinking Pin 2
No Connection
D1
(Note 2)
C1
Dz
(Note 1)
Description
V
V
dd
SS
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SINGLE PHASE HALL EFFECT LATCH SMART
2 of 10
AH5792
FAN MOTOR CONTROLLER
FG
O1
O2
AH5792
© Diodes Incorporated
SYSTEM
POWER
10Kohm
July 2010
FG