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

IC FAN MOTOR DRVR BLDC TSOT23-5

AH5798-WTG-7

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

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
Features
Description
The AH5798 is a single chip solution for driving single-coil
brushless direct current (BLDC) fans and motors. The
integrated full-bridge driver output stage uses soft switching
to minimize audible switching noise and electromagnetic
interference (EMI) providing a low noise solution.
To help protect the motor coil, the AH5798 provides Rotor
Lock Protection which shuts down output drive if rotor lock is
detected. The device automatically re-starts when the rotor
lock is removed.
thermal protection for the device.
A Tachometer output is provided by open-drain Frequency
Generator (FG) Pin which allows external interface to monitor
motor rotation or speed.
change frequency.
The AH5798 is available in space saving SOT89-5L and
thinner TSOT25 packages.
AH5798
Document number: DS32001 Rev. 2 - 2
Supports single-coil full-wave DC fan drivers
Built-in Hall sensor and input amplifier
Operating Voltage: 1.8V to 5.5V
Soft switching for low noise DC fan motor applications
Rotor Lock Protection (Lock detection, output shutdown
and automatic re-start)
Thermal protection
Tachometer (FG) output
No external timing capacitor - Reduces the numbers of
external components required
Low profile packages: SOT89-5L and TSOT25
“Green” Molding Compound
Over temperature shutdown provides
The FG output is the magnetic
www.diodes.com
SINGLE PHASE HALL EFFECT LATCH SMART
1 of 11
Pin Assignments
Applications
3.3V / 5V Min. BLDC Cooling Fans
Netbook/ Notebook BLDC fans
Low Voltage/ Low Power BLDC Motors
Vss
FG
O2
Vdd
Vss
O1
1
3
2
1
2
3
FAN MOTOR CONTROLLER
( Top View)
( Top View )
SOT89-5L
TSOT25
7 4
5
5
4
AH5798
NC
FG
O2
© Diodes Incorporated
Vdd
O1
June 2010

Related parts for AH5798-WTG-7

AH5798-WTG-7 Summary of contents

Page 1

... To help protect the motor coil, the AH5798 provides Rotor Lock Protection which shuts down output drive if rotor lock is detected. The device automatically re-starts when the rotor lock is removed ...

Page 2

... 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. The AH5798 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. ...

Page 3

... Frequency Generator Control Soft Switching AMP Logic Control Lock detect, Shoutdown and Automatic re-start Ton Toff Mechanical lock motor locked detected www.diodes.com AH5798 FAN MOTOR CONTROLLER FG O1 Full Bridge Driver O2 “Re-start spinning” motor locked cleared June 2010 © Diodes Incorporated ...

Page 4

... Soft Switching AH5798 employs soft switching of output drive at commutation to reduce audible noise and EMI for low noise applications. Vdd Vout 1 Vout 2 GND Absolute Maximum Ratings Symbol Vdd Supply voltage I Maximum Output Current (Peak) O(PEAK) P Power Dissipation D T Storage Temperature Range ST Thermal Resistance Junction-to-Ambient θ ...

Page 5

... SINGLE PHASE HALL EFFECT LATCH SMART = 25°C, Vdd = 5V) A Test Conditions No Load I = 300mA OUT I = 300mA OUT 50Ω load on out1/out2 I = 5mA OFF ON = 25°C, Vdd = 1.8V~5V, Note 6) A Parameter www.diodes.com AH5798 FAN MOTOR CONTROLLER Min Typ. Max Unit - 4.4 4. 0.35 0.6 V μs - 100 - μA - ...

Page 6

... Magnetic Flux Density in Gauss S N (SOT89-5L) AH5798 Document number: DS32001 Rev SINGLE PHASE HALL EFFECT LATCH SMART OFF OFF Bop Marking side www.diodes.com AH5798 FAN MOTOR CONTROLLER Brp 0 Bop Magnetic Flux Density in Gauss N Marking side S (TSOT25) June 2010 © Diodes Incorporated V OH ...

Page 7

... Pow er D iss ipation C urve 375 333 313 292 115 120 125 130 146 125 104 83 Pow er Diss ipation C urv www.diodes.com AH5798 FAN MOTOR CONTROLLER 100 416 384 352 320 135 140 145 150 105 T (° 100 271 ...

Page 8

... Y : SOT89- TSOT25 Package Device Code AH5798-YG-13 Y AH5798-WTG-7 WT Notes: 7. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf 8. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html Marking Information ...

Page 9

... Package Outline Dimensions (1) Package type: SOT89-5L Sensor Location AH5798 Document number: DS32001 Rev SINGLE PHASE HALL EFFECT LATCH SMART (All Dimensions in mm www.diodes.com AH5798 FAN MOTOR CONTROLLER June 2010 © Diodes Incorporated ...

Page 10

... Package Outline Dimensions (2) Package type: TSOT25 Sensor Location AH5798 Document number: DS32001 Rev SINGLE PHASE HALL EFFECT LATCH SMART (Continued www.diodes.com AH5798 FAN MOTOR CONTROLLER June 2010 © Diodes Incorporated ...

Page 11

... Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2010, Diodes Incorporated www.diodes.com AH5798 Document number: DS32001 Rev SINGLE PHASE HALL EFFECT LATCH SMART FAN MOTOR CONTROLLER IMPORTANT NOTICE LIFE SUPPORT www.diodes.com AH5798 June 2010 © Diodes Incorporated ...

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