LA6581T [ONSEMI]
BTL Driver Single-Phase Full-Wave;
| 型号： | LA6581T |
| 厂家： | 
ONSEMI |
| 描述： | BTL Driver Single-Phase Full-Wave |
| 文件： | 总4页 (文件大小：65K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : EN7192B
LA6581T
Monolithic Linear IC
Fan Motor Driver
http://onsemi.com
BTL Driver Single-Phase Full-Wave
Overview
The LA6581T is a low-saturation BTL output linear driving motor driver for single-phase bipolar fan motors. It
features quite, low power, high efficiency drive that suppresses reactive current. It is optimal for use in applications that
require miniaturization and low noise, such as CPU cooling fan motors and 5 to 12V electronic game products.
Functions
• Single-phase full-wave linear drive with BTL output (gain resistance 500Ω to 284kΩ, 55dB) : Suitable for the
equipment requiring silent operation, such as game equipment, CPU cooler, etc. because of its freedom from
switching noise.
• Low-voltage operation possible, with wide operable voltage range (3 to 16V)
• Low saturation output (Upper + lower saturation voltage : V sat (total) = 0.3V typ, I = 100mA) : High coil
O
O
efficiency with low current drain. IC itself does not generate much heat.
• High impedance of Hall input pin
• FG output (rotation speed detection output : open collector output)
• Heat protection circuit : When the large current flows because of output short-circuit, raising the IC chip temperature
above 180°C, the heat protection circuit suppresses the drive current, preventing IC burn and breakdown.
• Ultraminiature package (MSOP8: 3.0mm×4.9mm×0.93mm typ) : Small substrate while allowing larger blades.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
Supply voltage
Output current
V
I
max
18
CC
max
max
0.30
A
OUT
Output withstand voltage
FG output withstand
V
V
I
18
18
V
OUT
max
V
FG
max
FG output current
5
mA
mW
°C
°C
FG
Allowable power dissipation
Operating temperature
Storage temperature
Pd max
Topr
400
-20 to +90
-55 to +150
Tstg
* Specified board: 20.0mm × 10.1mm × 0.8mm, Paper phenol, wiring density 20%.
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
30409 MS / 60607 MS IM B8-5218 / N2502AS (OT) No.7192-1/4
LA6581T
Recommended Operating Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
Supply voltage
V
V
2.5 to 16
0.3 to V -1.5
CC
Common-phase input voltage range
of Hall input
V
ICM
CC
Electrical Characteristics at Ta = 25°C, V
= 12.0V, unless especially specified.
CC
Ratings
typ
Parameter
Symbol
Conditions
min
Unit
max
-
+
Circuit current
I
IN = 5.8V, IN = 6.0V, R = ∞
14
0.1
0.1
19
mA
V
CC
L
OUT output low voltage
OUT output high voltage
Hall bias voltage
V
V
V
I
I
= 100mA
= 100mA
0.2
0.2
2.05
58
OL
O
O
V
OH
HB
RH = 360Ω+91Ω
1.85
52
1.95
55
V
Hall amplifier gain
Vg
dB
μA
V
Hall amplifier input current
FG output low voltage
FG output leakage current
Thermal protection circuit
V
V
-10
-2
10
INR
I
= 3mA
0.2
0.3
30
FG
FG
I
V
= 7V
μA
°C
FGL
FG
* Design guarantee
Th
150
180
200
* Design guarantee : Design target. Measurement with a single unit not made.
Package Dimensions
unit : mm (typ)
3245B
Pd max - Ta
500
400
300
200
3.0
Specified board
8
192
1
2
(0.53)
100
0
0.65
0.25
0.125
Mounted on a board:
20×10×0.8mm3, paper phenol
--20
0
20
40
60
80 90 100
Ambient temperature, Ta - °C
: MSOP8(150mil)
Truth Table
-
+
IN
H
L
IN
OUT1
OUT2
FG
L
Mode
L
H
L
L
H
During rotation
H
−
off
−
−
off
off
During overheat protection
No.7192-2/4
LA6581T
Pin Assignment
+
IN
1
2
3
4
8
7
6
5
FG
HB
V
CC
LA6581T
−
IN
OUT2
GND
OUT1
Top view
Block Diagram
V
CC
FG
2.0VRG
HB
+
-
IN
OUT1
OUT2
H
IN
GND
Timing Chart
Hall Signal
OUTPUT
Coil Current
FG Pulse
No.7192-3/4
LA6581T
Application Circuit Example
Di
Cr
*4
V
CC
*1
HB
R2
FG
OUT1
OUT2
HB
*3
LA6581T
−
H
IN
IN
*2
−
IN
H
+
+
IN
*5
R1
R2
GND
Elements in substrate
*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 : To obtain Hall bias from V , carry out 1/2 × V
bias as shown in the figure. Linear driving is made through
CC
CC
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 : When the Hall bias is taken from the HB pin, constant-voltage bias is made with about 2.0V. Therefore, the Hall
element can provide the output satisfactory in temperature characteristics. Adjustment of the Hall output
amplitude is made with R1. (When V
*4 : Keep this open when not used.
= 12V, the step *2 above proves advantageous for IC heat generation.)
CC
*5 : When the wiring from the Hall output to IC Hall input is long, noise may be carried through the wiring.
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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
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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
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
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PS No.A0706-4/4
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