ON LA6588MC Single-phase fan motor ic Datasheet

Ordering number : ENA2020
LA6588MC
Monolithic Linear IC
24V power supply, BTL output linear drive
http://onsemi.com
Single-phase Fan Motor IC
Overview
The LA6588MC 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 (MFP10SK) 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
VRD/FG max
28
V
IRD/FG max
5
mA
Output withstand voltage of
RD/FG output pin
RD/FG output current
HB output current
IB max
Allowable dissipation
Pd max
Mounted on a specified board. *
10
mA
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.
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current,
high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Semiconductor Components Industries, LLC, 2013
May, 2013
30712 SY 20120127-S00002 No.A2020-1/4
LA6588MC
Recommended Operating Conditions at Ta = -30 to +90°C
Parameter
Symbol
Ratings
Conditions
min
Unit
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.
Parameter
Symbol
Circuit Current
Lock detection capacitor
Ratings
Conditions
ICC1
During drive (CT = L)
ICC2
During lock protection (CT = H)
min
typ
4.5
ICT1
Unit
max
7
9.5
mA
2.5
4.5
6.5
mA
2.0
2.7
3.5
μA
0.15
0.23
0.30
μA
10
12
14
charge current
Capacitor discharge current
ICT2
Capacitor charge and
RCT
RCD = ICT1/ICT2
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
VOH
IO = 200mA
0.9
1.2
V
VHN
Zero peak value (including offset and hysteresis)
voltage
OUT output H saturation
voltage
Hall input sensitivity
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
1.5
1.7
V
VHB
HB output voltage
IHB = 5mA
1.3
Truth Table
IN-
IN+
CT
OUT1
H
L
L
H
L
H
L
-
-
OFF
OFF
-
H
OUT2
FG
RD
Mode
L
L
L
During rotation
H
H
H
During overheat protection
-:Don’t care.
No.A2020-2/4
LA6588MC
Package Dimensions
unit : mm (typ)
3420
5.0
0.5
4.4
6.2
Allowable power dissipation, Pd max -- W
10
1
2
1.0
0.15
0.35
0.05 (1.5)
1.55
0.8 MAX
Pd max -- Ta
1.0
Mounted on specified board: 114.3×76.1×1.6mm3
glass epoxy board.
0.8
0.6
0.4
0.384
0.2
0
-30
0
30
60
90
Ambient temperature, Ta -- °C
SANYO : MFP10SK(225mil)
120
MSG06804
Pin Assignment
Block Diagram
IN+
1
10
RD
HB
2
9
FG
IN-
3
8
VCC
CT
4
7
OUT2
OUT1
5
6
GND
LA6588MC
Top View
VCC
1.5V REG
AMP
Power supply
HB
IN+
OUT1
H
OUT2
IN-
GND
FG
Control
circuit
Charge discharge
RD
Discharge pulse
CT
CT=0.47 to 1μF
No.A2020-3/4
LA6588MC
Application Circuit Examples
Di
*4
Cr
VCC
RD
*1
R1
*2
H
HB
FG
IN-
OUT1
IN+
OUT2
HB
*5
*3
H
CT
IN-
GND
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: 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.
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PS No.A2020-4/4
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