Ordering number : ENA2266
LA6595DM
Monolithic Linear IC
BTL Drive Single-Phase Full-Wave
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.
http://onsemi.com
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 : VOsat (total) = 1.2V (typical), IO = 200mA)
•
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
Supply voltage
Output current
Output voltage
RD output pin output withstand voltage
RD output current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
IOUT max
VOUT max
VRD max
IRD max
Pd max
Topr
Tstg
Mounted on a specified board*
Conditions
Ratings
15
0.5
15
15
10
400
-30 to +90
-55 to +150
Unit
V
A
V
V
mA
mW
°C
°C
* 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
Supply voltage
Common-phase input voltage range of hall input
Symbol
VCC
VICM
Conditions
Ratings
2.2 to 14.0
0 to VCC -1.5
Unit
V
V
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, VCC = 12V, Unless otherwise specified.
Ratings
Parameter
Circuit current
Symbol
ICC1
ICC2
Lock detection capacitor charge
current
Capacitor discharge current
Capacitor charge/discharge current
ratio
CT charge voltage
CT discharge voltage
OUT output low saturation voltage
OUT output high saturation voltage
Hall input sensitivity
RD output pin low-level voltage
RD output pin leakage current
VCT1
VCT2
VOL
VOH
VHN
VRD
IRDL
IO = 200mA
IO = 200mA
Zero peak value
(including offset and hysteresis)
IRD = 5mA
VRD = 15V
1.3
0.3
1.5
0.5
0.25
0.95
7
0.15
1
1.7
0.7
0.45
1.2
15
0.3
30
V
V
V
V
mV
V
μA
ICT2
RCT
RCD = ICT1/ICT2
0.10
5
0.18
6.5
0.25
8
μA
ICT1
Conditions
min
Drive mode (CT = low)
Lock protection mode (CT = high)
3
2.5
0.9
typ
6
5
1.2
max
9
7.5
1.5
mA
mA
μA
Unit
500
Pd max -- Ta
Allowable poswer dissipation, Pd max -- mW
400
300
200
192
100
0
-30
0
30
60
90
120
No.A2266-2/5
LA6595DM
Application Circuit Example
Di
*1
Cr
*3
VCC
R2
*2
RD
H
IN+
IN
−
CT
OUT1
OUT2
GND
*4
R2
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 VCC, a 1/2 VCC bias, as shown in the figure, must be used.
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
LA6595DMR2G
Package
Micro8
(Pb-Free / Halogen Free)
Shipping (Qty / Packing)
4000 / Tape & Reel
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 suitability of 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.A1433-5/5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
