AH5798-WTG-7 Diodes Inc, AH5798-WTG-7 Datasheet - Page 2

• Manufacturer Part Number: AH5798-WTG-7
• Description: IC FAN MOTOR DRVR BLDC TSOT23-5
• Manufacturer: Diodes Inc

Specifications of AH5798-WTG-7

• Applications: Fan Motor Driver, Brushless (BLDC)
• Number Of Outputs: 1
• Current - Output: 300mA
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-5, TSOT-5, TSOP-5
• Operational Type: Single Phase Hall Effect Latch Smart Fan Motor Controller
• Operating Supply Voltage: 6 V
• Supply Current: 5 mA
• Operating Point Min/max: 10 G to 50 G
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Supply Voltage (min): 1.8 V
• Supply Voltage (max): 5.5 V
• Maximum Output Current: 800 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: AH5798-WTG-7DITR

Typical Application Circuit
* Reverse connection of power supply may damage the device. To prevent reverse power damage, a protection (reverse blocking)
Pin Descriptions
Notes:
AH5798
Document number: DS32001 Rev. 2 - 2
The AH5798 has an open-drain tachometer FG output that follows the magnetic change frequency. Typically, a pull-up resistor of 10kΩ is
is no current return path to power supply, so it is necessary to follow measures such as below.
recommended from FG pin to the supply voltage.
Diode D1 is needed between power supply and Vdd terminal. If a reverse power protection diode D1 is used, there
- Connect Dz (Zener diode) between Vdd and Vss terminal, to prevent voltage exceeding the absolute maximum rating of the device.
- Connect a capacitor C1 between Vdd and Vss terminal, to complete the current return path to power supply.
Pin Name
Vdd
Vss
SYSTEM
NC
FG
POWER
O1
O2
1. The FG is the same as the magnetic change frequency.
Power Supply Pin
Ground Pin
Output Driving & Sinking Pin 1
Output Driving & Sinking Pin 2
No Connection
Frequency Generator (Note 1)
D1
C1
Dz
Description
V
V
dd
SS
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SINGLE PHASE HALL EFFECT LATCH SMART
2 of 11
AH5798
FAN MOTOR CONTROLLER
FG
O1
O2
SYSTEM
POWER
AH5798
© Diodes Incorporated
10Kohm
June 2010
FG