SANYO LA6585M

Ordering number : EN8776
LA6585M
Monolithic Digital IC
For Motor Driver
BTL Driver Single-Phase Full-Wave
Overview
The LA6585M 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 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 and features
• Pre-driver for single-phase full-wave drive
• 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) = 1.2Vtyp, IO = 250mA)
: 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 & RD 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 & high heat capacity package
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
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.
41107 TI IM B8-8299,7644,7336 No.8776-1/5
LA6585M
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Supply voltage
Conditions
Ratings
VCC max
Allowable power dissipation
Pd max
Mounted on a specified board*
Unit
15
V
800
mW
Output current
IOUT max
0.7
A
Output withstand voltage
VOUT max
15
V
15
V
10
mA
RD/FG output pin output withstand
VRD/FG max
voltage
RD/FG output current
IRD/FG max
HB output current
IB max
10
mA
Operating temperature
Topr
-30 to +90
°C
Storage temperature
Tstg
-55 to +150
°C
*: Mounted on a specified board: 114.3mm×76.1mm×1.6mm glass epoxy
Operating Conditions at Ta = 25°C
Parameter
Symbol
Supply voltage
VCC
Common-phase input voltage range of
VICM
Conditions
Ratings
Hall input
Unit
2.2 to 14.0
V
0 to VCC-1.5
V
Electrical Characteristics at Ta = 25°C, VCC = 12V, unless otherwise specified
Parameter
Symbol
Ratings
Conditions
min
Circuit Current
Lock detection capacitor charge
ICC1
During drive (CT = L)
ICC2
During lock protection (CT = H)
ICT1
current
Capacitor discharge current
ICT2
Capacitor charge and discharge
RCT
RCD = ICT1/ICT2
current ratio
typ
Unit
max
3
6
9
mA
2.5
5
7.5
mA
0.9
1.2
1.5
µA
0.10
0.18
0.25
µA
5
6.5
8
-
CT charge voltage
VCT1
1.3
1.5
1.7
V
CT discharge voltage
VCT2
0.3
0.5
0.7
V
OUT output L saturation voltage
VOL
IO = 200mA
0.25
0.45
V
OUT output H saturation voltage
VOH
IO = 200mA
0.95
1.2
V
Hall input sensitivity
VHN
Zero peak value
7
15
mV
(including offset and hysteresis)
Hall bias voltage
VHB
IHB = 5mA
1.5
1.7
V
FG/RD output pin L voltage
VFG/RD
IRD/FG = 5mA
1.3
0.15
0.3
V
FG/RD output pin leak current
IFG/RDL
VRD/FG = 15V
1
30
µA
Truth Table
IN-
IN+
H
L
L
H
-
-
CT
L
H
OUT1
OUT2
FG
H
L
L
L
H
H
off
off
-
RD
Mode
L
During rotation
H
During overheat protection
No.8776-2/5
LA6585M
Package Dimensions
unit : mm (typ)
3086B
Pd max - Ta
0.63
10
4.4
6.4
6
0.15
0.1 (1.5)
1.7max
5
1
0.35
(0.5)
1.0
Allowable power dissipation, Pd max - mW
1200
5.0
Mounted on a specified board:
114.3mm×76.1mm×1.6mm,
glass epoxy
1000
800
600
400
384
200
0
-30
SANYO : MFP10S(225mil)
0
30
60
Ambient temperature, Ta - °C
90
120
ILA07116
Block Diagram
VCC
1.5VRG
HB
IN+
H
OUT1
OUT2
IN-
GND
FG
Control
circuit
Charge discharge
RD
Discharge pulse
CT=0.47 to 1µF
No.8776-3/5
LA6585M
Pin Assignment
IN+
RD
HB
FG
LA6585M
IN-
VCC
OUT2
CT
GND
OUT1
Top view
Sample Application Circuit
Di
*4
Cr
*1
VCC
RD
R2
FG
HB
*2
OUT1
IN-
H
HB
IN+
OUT2
R1
*3
*5
CT
GND
H
On board element
IN-
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 bias to VCC with resister R2 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. 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 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.
No.8776-4/5
LA6585M
SANYO Semiconductor Co.,Ltd. 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 Co.,Ltd.
products described or contained herein.
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semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents 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 Semiconductor Co.,Ltd. product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed
for volume production.
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above.
This catalog provides information as of April, 2007. Specifications and information herein are subject
to change without notice.
PS No.8776-5/5