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Ordering number : ENA0007
LA6584
Monolithic Linear IC
BTL Driver Single-Phase Full-Wave
Fan Motor Driver
Overview
The LA6584 is Single-phase bipolar fan motor is put into silent driving by means of BTL output linear drive, offering high
efficiency and power saving by suppressing the reactive current. Lock protection and rotation signal (FG, RD) circuits are
built in, ensuring optimum application to small fans for notebook PC, consumer equipment power supply, car audio system,
CPU cooler, etc. that require high reliability and low noise.
Functions and Applications
Single-phase full-wave driver for fan motor
Specitications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Output voltage
Allowable dissipation
VCC max
Pd max
Mounted on a specified board*
Output current
Output withstand voltage
RD/FG output pin output
Withstand voltage
RD/FG output current
HB output voltage
Operating temperature range
IOUT max
VOUT max
VRD/FG max
IRD/FG max
IB max
Topr
Storage temperature range
Tstg
*Mounted on a specified board (114.3×76.1×1.6mm, Glass epoxy)
Recommended Operating Range at Ta = 25°C
Parameter
Supply voltage
Common-phase input voltage
Range of Hall input
Symbol
VCC
VICM
Conditions
Ratings
15
1.1
1.2
15
15
5
10
-30 to +90
-55 to +150
Unit
V
W
A
V
V
mA
mA
°C
°C
Ratings
2.8 to 14.0
0 to VCC-1.5
Unit
V
V
81005 SY PC B6-6875 No.A0007-1/5
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LA6584
Electrical Characteristics at Ta = 25°C, VCC = 12V, unless especially specified.
Parameter
Circuit current
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
RD/FG output pin L voltage
RD/FG output pin leak current
HB output L voltage
Symbol
Conditions
ICC1
ICC2
ICT1
ICT2
RCT
VCT1
VCT2
VOL
VOH
VHN
VRD/FG
IRD/FGL
VHBL
During drive (CT = L)
During lock protection (CT = H)
RCD = ICT1/ICT2
IO = 200mA
IO = 200mA
Zero peak value
(including offset and hysteresis)
IRD/FG = 5mA
VRD/FG = 15V
IHB = 5mA
Ratings
min typ
46
24
2.0 2.8
0.15 0.23
9 12
1.6 1.7
0.6 0.7
0.2
0.9
7
max
9
6
3.5
0.30
15
1.8
0.8
0.3
1.2
15
0.1 0.2
1 30
1.3 1.5 1.7
Unit
mA
mA
µA
µA
-
V
V
V
V
mV
V
µA
V
Package Dimensions
unit : mm
3313
6.5
14
8
1
1.3
(2.35)
0.65
7
0.22
0.15
1.5
SANYO : HSSOP14(225mil)
No.A0007-2/5
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Truth Table
IN- IN+
HL
LH
--
LA6584
CT
OUT1
OUT2
FG
L HL L
LHH
H
OFF
OFF
-
RD
L
H
Mode
During rotation
During overheat protection
Pin Assignment
F-GND
F-GND
OUT2 1
(NC) 2
VCC 3
(NC) 4
FG 5
RD 6
NC 7
LA6584
Top view
14 OUT1
13 (NC)
12 CT
11 IN-
10 HB
9 IN+
8 (NC)
No.A0007-3/5
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Sample Application Circuit
LA6584
Di
*1
Cr
R2
*2 H
R2 *5
On board element
VCC
HB
IN-
RD
FG
OUT1
IN+
CT
OUT2
GND
*4
HB
R1
*3
H IN-
IN+
*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 To obtain Hall bias from VCC, carry out 1/2×VCC 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 When the Hall bias is taken from the HB pin, constant-voltage bias is made with about 2.0V. Therefore, the Hall
element can provide the output satisfactory in temperature characteristics. Adjustment of the Hall output
amplitude is made with R1. (When VCC = 12V, the step *2 above proves advantageous for IC heat generation.)
*4 Keep this open when not used.
*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.
No.A0007-4/5
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Internal Equivalent Circuit
VCC
1.5VRG
HB
IN+
H
IN-
GND
LA6584
OUT1
OUT2
Control
Circuit
Charge/discharge circuit
FG
RD
Discharge
pulse
CT = 0.47 to 1µF
„ Specifications of any and all SANYO 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.
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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 fire, or that
could cause damage to other property. When designing equipment, adopt safety measures 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
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for
the SANYO 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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rights of third parties.
This catalog provides information as of August, 2005. Specifications and information herein are subject to
change without notice.
PS No.A0007-5/5
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