LA6581U Datasheet, PDF (1/4 Pages) Sanyo Semicon Device – Fan Motor Driver BTL Driver Single-Phase Full-Wave

Ordering number : ENA0601B
LA6581U
Monolithic Linear IC
Fan Motor Driver
BTL Driver Single-Phase Full-Wave
Overview
The LA6581U 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.
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 (3 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.
• Ultraminiature package (MSOP8J : 3.0mm×4.9mm×0.85mm typ) : Small substrate while allowing larger blades.
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Output voltage
VCC max
Output current
IOUT max
*1
Output withstand voltage
VOUT max
FG output withstand
VFG max
FG output current
IFG max
*1: This specifies the starting current. Tj = 150°C max must not be exceeded.
Conditions
Ratings
Unit
18
V
0.36
A
18
V
18
V
5
mA
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Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
30409 MS / 53007 MS IM / 12507 MS PC 20060427-S00002 No.A0601-1/4