ENA2030 D

Ordering number : ENA2030
LA6585MC
Monolithic Linear IC
For Motor Driver
http://onsemi.com
BTL Driver Single-Phase Full-Wave
Overview
The LA6585MC 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
• 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
Semiconductor Components Industries, LLC, 2013
May, 2013
42512 SY 20120222-S00010 No.A2030-1/4
LA6585MC
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
750
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
*1: Specified board: 114.3mm × 76.1mm ×1.6mm, glass epoxy board
*2: Tj = 150°C max must not be exceeded.
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.
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
CT charge voltage
VCT1
CT discharge voltage
VCT2
OUT output L saturation voltage
VOL
OUT output H saturation voltage
Hall input sensitivity
typ
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
-
1.3
1.5
1.7
V
0.5
0.7
V
IO = 200mA
0.3
0.25
0.45
V
VOH
IO = 200mA
0.95
1.2
V
VHN
Zero peak value
7
15
mV
V
(including offset and hysteresis)
Hall bias voltage
Unit
max
VHB
IHB = 5mA
1.5
1.7
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.A2030-2/4
LA6585MC
Package Dimensions
unit : mm (typ)
3426A
4.9
10
6
Pd max -- Ta
0.21
1.5
0.175
Allowable power dissipation, Pd max -- mW
5
0.41
1.0
1.75 MAX
1
0.835
0.37
6.0
3.9
1000
Spesified board: 114.3×76.1×1.6mm3
glass epoxy board.
800
750
600
400
360
200
SANYO : SOIC10
0
-30
0
30
60
90
120
Ambient temperature, Ta -- C
Pin Assignment
IN+ 1
10 RD
HB 2
9 FG
3
LA6585MC
CT 4
8 VCC
7 OUT2
OUT1 5
6 GND
Top view
Block Diagram
VCC
1.5VRG
HB
IN+
H
OUT1
OUT2
IN-
GND
FG
Control
circuit
Charge discharge
RD
Discharge pulse
CT=0.47 to 1 F
No.A2030-3/4
LA6585MC
Application Circuit Example
Di
Cr
*4
VCC
*1
RD
R2
HB
FG
HB
LA6585MC
*2
H
OUT1
R1
*3
H
IN+
OUT2
*5
CT
GND
IN+
Elements in substrate
*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.
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application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental
damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual
performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical
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PS No.A2030-4/4
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