LA6595DM [ONSEMI]
BTL Drive Single-Phase Full-Wave Fan Motor Driver;
| 型号： | LA6595DM |
| 厂家： | 
ONSEMI |
| 描述： | BTL Drive Single-Phase Full-Wave Fan Motor Driver |
| 文件： | 总5页 (文件大小：170K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENA2266
LA6595DM
Monolithic Linear IC
BTL Drive Single-Phase Full-Wave
http://onsemi.com
Fan Motor Driver
Overview
The LA6595T is a single-phase bipolar fan motor driver
that achieves quite operation, power savings, silent
operation and high efficiency that suppresses reactive
current through BTL output linear drive. It provides lock
protection and rotation detection circuits on chip, and is
optimal for applications that require high reliability and
low noise, such as notebook personal computers, power
supplies in consumer electronic equipment, car audio,
and CPU cooling systems.
Micro8
Features
• BTL output single-phase full-wave linear drive (gain resistor : 1 to 360kΩ, 51dB)
• Supports low-voltage drive and features a wide usable voltage range (2.2 to 14.0V)
• Low saturation output (high side + low side saturation voltage : V sat (total) = 1.2V (typical), I = 200mA)
O
O
• Built-in lock protection and automatic return circuits
• Built-in RD (Rotation Detection) output
• Thermal protection circuit
• Extra-small package (Micro8)
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
max
Conditions
Ratings
Unit
V
Supply voltage
V
I
15
CC
Output current
max
max
0.5
15
A
OUT
Output voltage
V
V
I
V
OUT
RD output pin output withstand voltage
RD output current
max
15
V
RD
max
10
mA
mW
°C
°C
RD
Allowable power dissipation
Operating temperature
Storage temperature
Pd max
Topr
Mounted on a specified board*
400
-30 to +90
-55 to +150
Tstg
* Specified board : 20.0mm × 10.0mm × 0.8mm, glass epoxy board.
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.
Recommended Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
Supply voltage
V
2.2 to 14.0
0 to V -1.5
CC
Common-phase input voltage range of hall input
V
V
ICM
CC
ORDERING INFORMATION
See detailed ordering and shipping information on page 5 of this data sheet.
Semiconductor Components Industries, LLC, 2014
January, 2014
10814NK 20131203-S00002 No.A2266-1/5
LA6595DM
Electrical Characteristics at Ta = 25°C, V
= 12V, Unless otherwise specified.
CC
Ratings
typ
Parameter
Circuit current
Symbol
1
Conditions
Unit
min
max
I
I
I
Drive mode (CT = low)
mA
mA
μA
3
2.5
0.9
6
9
CC
2
Lock protection mode (CT = high)
5
7.5
1.5
CC
Lock detection capacitor charge
current
1
1.2
CT
Capacitor discharge current
I
2
0.10
5
0.18
6.5
0.25
8
μA
CT
Capacitor charge/discharge current
R
R
= I 1/I
2
CT
CD CT CT
ratio
CT charge voltage
V
1
V
V
1.3
0.3
1.5
0.5
1.7
0.7
CT
CT
OL
CT discharge voltage
V
V
V
2
OUT output low saturation voltage
OUT output high saturation voltage
Hall input sensitivity
I
= 200mA
= 200mA
O
0.25
0.95
7
0.45
1.2
V
O
I
V
OH
VHN
Zero peak value
(including offset and hysteresis)
15
mV
RD output pin low-level voltage
RD output pin leakage current
V
I
= 5mA
RD
0.15
1
0.3
30
V
RD
I
V
= 15V
μA
RDL
RD
Pd max -- Ta
500
400
300
200
100
0
192
-30
0
30
60
90
120
No.A2266-2/5
LA6595DM
Package Dimensions
unit : mm (typ)
Micro8
CASE 846A-02
ISSUE J
Pin Assignment
Micro8
+
IN
1
2
8
7
6
5
RD
−
IN
V
CC
CT 3
OUT1
OUT2
GND
4
Top View
No.A2266-3/5
LA6595DM
Block Diagram
V
CC
+
IN
H
OUT1
OUT2
−
IN
GND
RD
Control
circuit
Charge/discharge circuit
Discharge pulse
CT
CT=0.47 to 1μF
Truth Table
−
+
IN
IN
CT
OUT1
OUT2
RD
Mode
High
Low
−
Low
High
−
High
Low
Off
Low
High
Off
Low
Low
Off
Low
During rotation
Lock protection
High
No.A2266-4/5
LA6595DM
Application Circuit Example
Di
Cr
*3
*1
V
CC
R2
RD
OUT1
OUT2
GND
*2
+
H
IN
−
IN
*4
R2
CT
Circuit board mounted cpmponents
*1. If the diode Di (which protects the IC destruction by reverse connection) is used, it is necessary to insert the
capacitor Cr and provide a regenerative current route. Similarly, if there is no nearby capacitor on the fan power
supply line, Cr will also be necessary to improve reliability.
*2. If the Hall sensor bias is taken from V , a 1/2 V
bias, as shown in the figure, must be used.
CC
CC
Linear drive is implemented by amplifying the Hall sensor output and applying voltage control to the coil. If the
Hall effect sensor provides a strong output, the startup characteristics and efficiency will be good, then even
quieter operation will be achieved by adjusting the Hall effect sensor.
*3. This pin must be left open if unused.
*4. If the line from the Hall sensor output to the Hall sensor input of IC are long, noise may enter the system from that
line. If that becomes a problem, insert a capacitor as shown in the figure.
ORDERING INFORMATION
Device
Package
Shipping (Qty / Packing)
4000 / Tape & Reel
Micro8
(Pb-Free / Halogen Free)
LA6595DMR2G
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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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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.A1433-5/5
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