Ordering number : ENA0505A
Monolithic Linear IC
LA6588M 24V power supply, BTL output linear drive
Single-phase Fan Motor IC
Overview
The LA6588M is a Single-phase bipolar fan motor IC for 24V power supply. BTL output linear drive ensures
highly-efficient, energy-saving, and silent drive while suppressing the ineffective current. Lock protection and lock signal
circuit are incorporated, proving most suitable for consumer equipment power supply, OA equipment and car audio system,
etc which require high reliability and low noise.
Functions
• Single-phase full-wave linear drive by BTL output (gain resistance 500 to 360k, 57dB)
: No switching noise, which is most favorable for use in equipment requiring silent operation, such as consumer
equipment power supply, car audio system, etc.
• Operable at low voltage and over a wide operation voltage range (8 to 26.4V)
• Low saturation output (Upper + lower saturation voltages: VOsat (total) = 1.1V typ, IO = 200mA)
: High coil efficiency and small current drain. Small heat generation from IC itself
• Lock protection and automatic return circuits incorporated
• Lock protection signal output (L during rotation, H at stop, open collector output)
• Output (Rotation detection output: Open collector output)
• Hall bias incorporated (VHB = 1.5V)
• Heat protection circuit
:The heat protection circuit suppresses the drive current to prevent burn or damage of IC when the large current flows due
to output short-circuit and the IC chip temperature exceeds 180°C.
• Small package with high heat capacity (MFP10S) Pin- compatible silent series (5V/12V/24V products)
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Supply voltage VCC max 28 V
Output current IOUT max 0.8 A
Output withstand voltage VOUT max 28 V
Output withstand voltage of VRD/FG max 28 V
RD/FG output pin
RD/FG output current IRD/FG max 5 mA
HB output current IB max 10 mA
Continued on next page.
■ Any and all SANYO Semiconductor products described or contained herein do not have specifications
that can handle applications that require extremely high levels of reliability, such as life-support systems,
aircraft’s control systems, or other applications whose failure can be reasonably expected to result in
serious physical and/or material damage. Consult with your SANYO Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
■ SANYO Semiconductor assumes no responsibility for equipment failures that result from using products
at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor
products described or contained herein.
82206 MS PC / 81006 MS PC B8-9093 No.A0195-1/5
LA6588M
Continued from preceding page.
Parameter Symbol Conditions Ratings Unit
Allowable dissipation Pd max Mounted on a specified board. * 800 mW
Operating temperature Topr -30 to +90 °C
Storage temperature Tstg -55 to +150 °C
* Mounted on a specified board: 114.3×76.1×1.6 mm3, glass epoxy board.
Recommended Operating Conditions at Ta = -30 to +90°C
Ratings
Parameter Symbol Conditions Unit
min typ max
Supply voltage VCC 8 26.4 V
Common-phase input voltage VICM 0 VCC–1.5 V
range of Hall input
Electrical Characteristics at Ta = 25°C, VCC = 24V, unless otherwise specified.
Ratings
Parameter Symbol Conditions Unit
min typ max
Circuit Current ICC1 During drive (CT = L) 4.5 7 9.5 mA
ICC2 During lock protection (CT = H) 2.5 4.5 6.5 mA
Lock detection capacitor ICT1 2.0 2.7 3.5 µA
charge current
Capacitor discharge current ICT2 0.15 0.23 0.30 µA
Capacitor charge and RCT RCD = ICT1/ICT2 10 12 14
discharge current ratio
CT charge voltage VCT1 1.55 1.7 1.8 V
CT discharge voltage VCT2 0.65 0.75 0.85 V
OUT output L saturation VOL IO = 200mA 0.2 0.3 V
voltage
OUT output H saturation VOH IO = 200mA 0.9 1.2 V
voltage
Hall input sensitivity VHN Zero peak value (including offset and hysteresis) 7 mV
RD/FG output pin L voltage VRD/FG IRD/FG = 5mA 0.2 0.3 V
RD/FG output pin leak current IRD/FG VRD/FG = 15V 1 3 µA
HB output voltage VHB IHB = 5mA 1.3 1.5 1.7 V
Truth Table
IN- IN+ CT OUT1 OUT2 FG RD Mode
H L L H L L L During rotation
L H L H H
- - H OFF OFF - H During overheat protection
-:Don’t care.
No.A0505-2/5
LA6588M
Package Dimensions
unit : mm (typ)
3086B Pd max -- Ta
1.0
Mounted on specified board: 114.3×76.1×1.6mm3
Allowable power dissipation, Pd max -- W
5.0
0.63
glass epoxy board.
10 6
0.8
6.4
0.6
4.4
0.4
0.384
1.7max
1 5
0.15
0.2
0.1 (1.5)
0
0.35 1.0 (0.5) -30 0 30 60 90 120
Ambient temperature, Ta -- °C MSG06804
SANYO : MFP10S(225mil)
Pin Assignment
IN+ 1 10 RD
HB 2 9 FG
IN- 3 LA6588M 8 VCC
CT 4 7 OUT2
OUT1 5 6 GND
Top View
No.A0505-3/5
LA6588M
Block Diagram
VCC
1.5V REG AMP
Power supply
HB
IN+
H OUT1
OUT2
IN-
GND
FG
Control
circuit Charge discharge
Discharge pulse RD
CT
CT=0.47 to 1µF
Application Circuit Examples
*4
Di Cr
VCC
RD
*1
R1 HB FG
*2
H IN- OUT1
HB
IN+ OUT2 *3
*5
H IN-
CT GND
IN+
No.A0505-4/5
LA6588M
*1: When Di to prevent breakdown in case of reverse connection is used, it is necessary to insert a capacitor Cr to secure
the regenerative current route. Similarly, Cr is necessary to enhance the reliability when there is no capacitor near the
fan power line.
*2: When taking Hall bias from VCC, carry out bias to VCC with resistor R1 as shown in the figure. Linear drive is
achieved through voltage control of the coil by amplifying the Hall output. With large Hall element output, the start
performance and efficiency are improved. Noise can be reduced further by adjusting the Hall element.
*3: When the Hall bias is taken from the HB pin, constant-voltage bias is made with about 1.5V. Therefore, the Hall
element can provide the output satisfactory in temperature characteristics.
*4: Keep this open when not using.
*5: When the wiring from the Hall output to IC Hall input is long, noise may be carried through the wiring.
In this case, insert the capacitor as shown in the figure.
Specifications of any and all SANYO Semiconductor 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.
SANYO Semiconductor Co., Ltd. strives to supply high-quality high-reliability products. However, any
and all semiconductor products fail with some probability. It is possible that these probabilistic failures
could give rise to accidents or events that could endanger human lives, that could give rise to smoke or
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so that these kinds of accidents or events cannot occur. Such measures include but are not limited to
protective circuits and error prevention circuits for safe design, redundant design, and structural design.
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Any and all information described or contained herein are subject to change without notice due to
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for the SANYO Semiconductor product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
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This catalog provides information as of August, 2006. Specifications and information herein are subject
to change without notice.
PS No.A0505-5/5
