Ordering number : ENA0603
Monolithic Linear IC
LA6587T
Overview
Fan Motor Driver
BTL Driver Single-Phase Full-Wave
The LA6587T is single-phase bipolar fan motor is driven, through BTL output linear drive, at high efficiency, low power,
and low sound by suppressing the reactive power. Lock protection, rotary signal (FG, 1/2FG) circuits are incorporated,
which is optimum for the notebook PC, consumer equipment power supply, car audio system, CPU cooler, etc. that require
high reliability and low noise.
Functions
•
Single-phase full-wave linear drive by BTL output (gain resistance 1kΩ-360kΩ, 51dB)
: No switching noise, which is optimum for equipment requiring silence, such as consumer equipment power supply, car
audio system, etc.
•
Low-voltage operation possible, with wide operating voltage range (2.2 to 14.0V)
•
Low saturation output (Upper + lower saturation voltage : VOsat (total) = 1.1Vtyp, IO = 100mA)
: High coil efficiency with low current drain. Additionally, IC itself generates only small heat.
•
Built-in lock protection and automatic reset circuits
•
Built-in FG & 1/2FG outputs
•
Built-in Hall bias (VHB = 1.5V)
•
Thermal protection circuit
: When the large current flows due to output short-circuit and the IC chip temperature exceeds 180°C, this protective
circuit suppresses the drive current to prevent burn and damage to IC.
•
Extra-small package (MSOP10)
Specifications
Absolute Maximum Ratings
at Ta = 25°C
Parameter
Output voltage
Allowable power dissipation
Output current
Output withstand voltage
RD/FG output pin output
withstand voltage
RD/FG output current
IRD/FG max
10
mA
Symbol
VCC max
Pd max
IOUT max
VOUT max
VRD/FG max
Mounted on a specified board*
Conditions
Ratings
15
400
0.6
15
15
Unit
V
mW
A
V
V
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.
D0606 MS PC B8-7868 No.A0603-1/5
LA6587T
Continued from preceding page.
Parameter
HB output current
Operating temperature
Storage temperature
Symbol
IB max
Topr
Tstg
Conditions
Ratings
10
-40 to +85
-40 to +150
Unit
mA
°C
°C
* Mounted on a specified board : 114.3×76.2×1.5mm
3
, glass epoxy board.
Operating Conditions
at Ta = 25°C
Parameter
Supply voltage
Common-phase input voltage
range of Hall input
Symbol
VCC
VICM
Conditions
Ratings
2.2 to 14.0
0 to VCC-1.5
Unit
V
V
Electrical Characteristics
at Ta
=
25°C, VCC = 12V, unless especially specified.
Parameter
Circuit Current
Symbol
ICC1
ICC2
Lock detection capacitor charge
current
Capacitor discharge current
Capacitor charge and discharge
current ratio
CT charge voltage
CT discharge voltage
OUT output L saturation voltage
OUT output H saturation voltage
Hall input sensitivity
FG/1/2FG output pin L voltage
FG/1/2FG output pin leak current
VCT1
VCT2
VOL
VOH
VHN
VFG
IFGL
IO = 200mA
IO = 200mA
Zero peak value
(including offset and hysteresis)
IFG = 5mA
VFG = 15V
0.15
1
0.3
30
V
μA
1.3
0.3
1.5
0.5
0.25
1.0
7
1.6
0.6
0.45
1.2
15
V
V
V
V
mV
ICT2
RCT
RCD = ICT1/ICT2
0.11
5
0.18
6.5
0.25
8
μA
-
ICT1
Conditions
min
During drive (CT = L)
During lock protection (CT = H)
4
3
0.9
Ratings
typ
6
4.5
1.2
max
8
6
1.5
mA
mA
μA
Unit
Truth Table
IN-
H
L
-
IN+
L
H
-
H
CT
L
OUT1
H
L
off
OUT2
L
H
off
FG
L
H
-
-
During overheat protection
RD
*
Mode
During rotation
*
1/2FG provides the output equivalent to the divided FG output.
No.A0603-2/5
LA6587T
Package Dimensions
unit : mm (typ)
3236A
3.0
10
6
3.0
4.9
1
(0.5)
0.5
5
0.2
(0.85)
0.125
SANYO : MSOP10(150mil)
Pin Assignment
0.08
1.1 max
0.5
IN+
1/2FG
HB
FG
IN-
LA6587T
VCC
CT
OUT2
OUT1
Top view
GND
No.A0603-3/5
LA6587T
Block Diagram
VCC
AMP power supply
1.5VRG
HB
IN+
H
OUT1
OUT2
IN-
GND
FG
1/2FG
Control
circuit
Charge discharge
Discharge pulse
CT = 0.47 to 1μF
No.A0603-4/5
LA6587T
Sample Application Circuit
Di
*1
Cr
VCC
1/2FG
R1
HB
*2
H
IN-
FG
*4
OUT1
HB
OUT2
*6
CT
GND
H
IN-
*3
IN+
*5
On board element
IN+
*1 : When the breakdown protective DI at reverse connection is to be used, it is necessary to insert the capacitor Cr to
secure the regenerative current route. Similarly, Cr must be provided to enhance the reliability when there is no
capacitor near the fan power line.
*2 : To obtain Hall bias from VCC, carry out 1VCC bias as shown in the figure. Linear driving is made through
voltage control of the coil by amplifying the Hall output. When the Hall element output is large, the startup
performance and efficiency are improved. Adjustment of the Hall element can reduce the noise further.
*3 : To obtain Hall bias from the HB pin, carry out constant-voltage bias at about 1.5V, which enables the Hall
element to generate the stable Hall 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.
In the event that any or all SANYO Semiconductor products (including technical data,services) described
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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 December, 2006. Specifications and information herein are subject
to change without notice.
PS No.A0603-5/5
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