LA6581DM Datasheet, PDF (1/5 Pages) ON Semiconductor – Fan Motor Driver

Ordering number : ENA2264
LA6581DM
Monolithic Linear IC
Fan Motor Driver
BLT Driver Single-Phase
Full-Wave
http://onsemi.com
Overview
The LA6581DM is a low-saturation BTL output linear
driving motor driver for single-phase bipolar fan motors.
It features quite, low power, high efficiency drive that
suppresses reactive current. It is optimal for use in
applications that require miniaturization and low noise,
such as CPU cooling fan motors and 5 to 12V electronic
game products.
Micro8
Functions
• Single-phase full-wave linear drive with BTL output (gain resistance 500Ω to 284kΩ, 55dB) : Suitable for the
equipment requiring silent operation, such as game equipment, CPU cooler, etc. because of its freedom from
switching noise.
• Low-voltage operation possible, with wide operable voltage range (2.2 to 16V)
• Low saturation output (Upper + lower saturation voltage : VOsat (total) = 0.3V typ, IO = 100mA) : High coil
efficiency with low current drain. IC itself does not generate much heat.
• High impedance of Hall input pin
• FG output (rotation speed detection output : open collector output)
• Heat protection circuit : When the large current flows because of output short-circuit, raising the IC chip temperature
above 180°C, the heat protection circuit suppresses the drive current, preventing IC burn and breakdown.
• Extra-small package (Micro8)
Small substrate while allowing larger blades
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Output voltage
VCC max
18
V
Allowable power dissipation
Pd max
Mounted on a specified board *1
400
mW
Output current
IOUT1 max
IOUT2 max
*2
T<200ms
0.36
A
0.50
A
Output withstand voltage
FG output withstand
FG output current
VOUT max
VFG max
IFG max
18
V
18
V
5
mA
Operating temperature
Topr
-30 to +100
°C
Storage temperature
Tstg
-55 to +150
°C
*1: Mounted on a board (20.0mm 10.0mm 0.8mm: Paper Phenol, wiring density 20%)
*2: This specifies the starting current. Tj=15°C max must not be exceeded..
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current,
high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
ORDERING INFORMATION
See detailed ordering and shipping information on page 5 of this data sheet.
Semiconductor Components Industries, LLC, 2014
January, 2014
10814NK 20131203-S00001 No.A2264-1/5