LA6585MC [ONSEMI]
IC BRUSHLESS DC MOTOR CONTROLLER, Motion Control Electronics;
| 型号： | LA6585MC |
| 厂家： | 
ONSEMI |
| 描述： | IC BRUSHLESS DC MOTOR CONTROLLER, Motion Control Electronics 电动机控制 |
| 文件： | 总4页 (文件大小：59K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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 : V sat (total) = 1.2Vtyp, I = 250mA)
O
O
: 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 (V
= 1.5V)
HB
• 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
Supply voltage
Symbol
max
Conditions
Ratings
Unit
V
V
15
750
0.7
15
CC
Pd max
max
Allowable power dissipation
Output current
Mounted on a specified board*
mW
A
I
OUT
Output withstand voltage
V
max
V
OUT
RD/FG output pin output withstand
voltage
V
max
max
RD/FG
15
V
RD/FG output current
I
10
10
mA
mA
°C
RD/FG
HB output current
I max
B
Operating temperature
Storage temperature
Topr
Tstg
-30 to +90
-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
Supply voltage
Symbol
Conditions
Ratings
2.2 to 14.0
Unit
V
V
CC
Common-phase input voltage range of
Hall input
V CM
I
0 to V -1.5
CC
V
Electrical Characteristics at Ta = 25°C, V
= 12V, unless otherwise specified
CC
Ratings
typ
Parameter
Circuit Current
Symbol
Conditions
Unit
min
max
I
I
1
2
1
During drive (CT = L)
3
6
5
9
mA
mA
CC
During lock protection (CT = H)
2.5
0.9
0.10
5
7.5
1.5
0.25
8
CC
Lock detection capacitor charge
current
I
CT
1.2
μA
μA
-
Capacitor discharge current
I
2
0.18
6.5
CT
Capacitor charge and discharge
current ratio
R
RCD = I 1/I 2
CT CT
CT
CT charge voltage
V
V
1
1.3
0.3
1.5
0.5
1.7
0.7
V
V
V
V
CT
CT discharge voltage
2
CT
OUT output L saturation voltage
OUT output H saturation voltage
Hall input sensitivity
V
I
I
= 200mA
0.25
0.95
0.45
1.2
OL
O
O
V
= 200mA
OH
V
Zero peak value
(including offset and hysteresis)
HN
7
15
mV
Hall bias voltage
V
I
I
= 5mA
1.3
1.5
0.15
1
1.7
0.3
30
V
V
HB
HB
FG/RD output pin L voltage
FG/RD output pin leak current
V
= 5mA
= 15V
FG/RD
RD/FG
I
V
RD/FG
μA
FG/RDL
Truth Table
IN-
H
L
IN+
L
CT
L
OUT1
OUT2
FG
L
RD
L
Mode
During rotation
During overheat protection
H
L
L
H
H
H
-
-
-
H
off
off
H
No.A2030-2/4
LA6585MC
Package Dimensions
unit : mm (typ)
3426A
4.9
10
6
Pd max -- Ta
1000
Spesified board: 114.3 76.1 1.6mm3
×
×
glass epoxy board.
800
750
600
400
200
1
5
0.41
1.0
0.21
360
0
-30
0
30
60
90
120
SOIC10
Ambient temperature, Ta -- C
Pin Assignment
+
IN
1
2
3
4
5
10 RD
HB
9
8
7
6
FG
V
LA6585MC
CC
CT
OUT2
GND
OUT1
Top view
Block Diagram
V
CC
1.5VRG
HB
+
IN
OUT1
OUT2
H
-
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
V
CC
*1
RD
FG
HB
R2
HB
LA6585MC
R1
*2
H
OUT1
OUT2
*3
H
+
IN
*5
+
IN
CT
GND
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 V , carry out bias to V
with resister R2 as shown in the figure. Linear driving is
CC
CC
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 V =12V, the step *2 above proves advantageous for IC heat generation.)
CC
*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.A2030-4/4
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