LA6681MC-AH [ONSEMI]
Single-Phase Full-Wave Fan Motor Driver, SOIC-8 Narrow Body, 2500-REEL;
| 型号： | LA6681MC-AH |
| 厂家： | 
ONSEMI |
| 描述： | Single-Phase Full-Wave Fan Motor Driver, SOIC-8 Narrow Body, 2500-REEL 电动机控制 光电二极管 |
| 文件： | 总4页 (文件大小：281K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENA2074
LA6681MC
Monolithic Linear IC
Single-phase Full-wave
http://onsemi.com
Fan Motor IC
Overview
The LA6681MC drives the single-phase bipolar fan motor, through low-saturation BTL output linear drive, silently and
at high efficiency with suppressed reactive power while saving power.
This product is the most suitable for the CPU cooler fan motor operating on 5V power for notebook PC, which is
required to be compactness and low noise.
Functions
• Single-phase full-wave linear drive by BTL output.
: Linear drive for further silence and the most suitable for fan motor for the notebook PC.
• Operable at low voltage and over a wide operation voltage range (2.0 to 7.0V)
• Low saturation output (Upper + lower saturation voltages: V sat (total) = 0.32V typ, I = 400mA)
O
O
: High coil efficiency and small current drain. Small heat generation from IC itself
• FG output (Rotation detection output: Open collector output)
• High impedance of Hall input pin
• 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
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
Supply voltage
V
max
max
max
max
max
8
CC
Output current
I
1.0
A
OUT
Output withstand voltage
FG output withstand voltage
FG output current
V
8
V
OUT
V
8
5
V
FG
I
mA
mW
°C
°C
FG
Allowable dissipation
Operating temperature
Storage temperature
Pd max
Topr
Mounted on a specified board. *1
*2
750
-30 to +110
-55 to +150
Tstg
*1: Mounted on a specified board: 114.3×76.1×1.6 mm3, glass epoxy board.
*2: Tjmax = 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.
Semiconductor Components Industries, LLC, 2013
May, 2013
62012 SY 20120222-S00004 No.A2074-1/4
LA6681MC
Recommended Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
Supply voltage
V
2.0 to 7.0
CC
Common-phase input voltage
range of Hall input
V CM
I
0.3 to V –1.5
CC
V
Electrical Characteristics at Ta = 25°C, V
= 5V, unless otherwise specified.
CC
Ratings
typ
Parameter
Symbol
Conditions
Unit
min
max
14
0.17
19
0.25
0.30
5
mA
V
Circuit current
I
IN-=1.0V, IN+=2.0V, RL=∞
CC
OUT saturation voltage L
OUT saturation voltage H
Input offset voltage
V
V
satL
satH
I
I
= 400mA
= 400mA
O
O
O
O
0.21
0
V
mV
V
VOFST
VHB
Vg
Zero peak value
1.3
42
1.4
46
-2
1.5
47
Hall bias voltage
I
= 5mA
HB
dB
μA
V
Hall amplifier gain
-10
10
Hall amplifier input current
FG output L voltage
VINR
VFG
IFGL
Th
I
= 3mA
0.2
0.3
30
FG
V
= 7V
μA
°C
FG
FG output leakage current
Overheat protection circuit
150
180
210
* Design guarantee
Truth Table
-
+
IN
IN
OUT1
OUT2
FG
Mode
H
L
L
H
-
H
L
L
H
L
OFF
-
During rotation
-
OFF
OFF
Overheat protected
-:Don’t care.
Package Dimensions
unit : mm (typ)
3424
4.9
Pd max -- Ta
1.0
0.8
0.6
0.4
0.2
0
8
Mounted on specified board: 114.3 76.1 1.6mm3
×
×
glass epoxy board.
1
2
1.27
0.42
0.2
0.24
-30
0
30
60
90
120
Ambient temperature, Ta -- °C
SOIC8
No.A2074-2/4
LA6681MC
Pin Assignment
+
IN
1
2
3
4
8
7
6
5
FG
HB
V
CC
LA6681MC
-
IN
OUT2
GND
OUT1
Top View
Block Diagram
V
CC
FG
1.3V REG
HB
+
IN
OUT1
H
OUT2
-
IN
GND
Timing chart
Hall Signal
OUTPUT
Coil Current
FG Pulse
No.A2074-3/4
LA6681MC
Application Circuit Examples
*4
Di
Cr
*1
V
HB
CC
R2
*3
R2
HB
FG
OUT1
*2
-
-
H
H
IN
IN
+
+
IN
OUT2
IN
GND
Element in the board
*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: Basically, by taking the bias from HB 1.3V constant-output voltage, stable Hall and coil outputs can be obtained at
high temperature. When taking the Hall bias from VCC, insert the limiting resistor R2 on the V
side as shown in
CC
the figure, for biasing. (The use together with HB bias is recommended.)
*3: Linear drive is made by amplifying the Hall output to perform voltage control of the coil. When the Hall element
output is high, the starting performance and efficiency are improved. By adjusting (R3) the Hall element, the operation
becomes more silent.
*4: Keep this open when not using.
ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number
of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at
www.onsemi.com/site/pdf/Patent-Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no
warranty, representation or guarantee regarding the suitabilityof its products for any particular purpose, nor does SCILLC assume any liability arising out of the
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
experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use
as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in
which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for
any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors
harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or
death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the
part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PS No.A2074-4/4
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