ENA2043 D

Ordering number : ENA2043
LA6586FA
Monolithic Linear IC
BTL Driver Single-Phase Full-Wave
Fan Motor Driver
http://onsemi.com
Overview
The LA6586FA is Single-phase bipolar fan motor is put into silent driving by means of BTL output linear drive,
offering high efficiency and power saving by suppressing the reactive current. Lock protection and rotation signal
(FG, RD) circuits are built in, ensuring optimum application to small fans for notebook PC, consumer equipment
power supply, car audio system, CPU cooler, etc. that require high reliability and low noise.
Functions
• Single-phase full-wave linear drive by BTL output (gain resistance 1kΩ-360kΩ, 51dB)
• Low-voltage operation possible, with wide operating voltage range (2.2 to 14.0V)
• Low saturation output (Upper + lower saturation voltage : Vosat (total)=1.2Vtyp, IO=200mA)
• Built-in lock protection and automatic reset circuits
• Built-in FG&RD outputs
• Built-in Hall bias (VHB=1.3V)
• Thermal protection circuit
• Extra-small package (Micro10)
Specitications
Absolute Maximum Ratings at Ta = 25 °C
Parameter
Output voltage
Allowable power dissipation
Symbol
Conditions
VCC max
Pd max
Mounted on a specified board*
Ratings
Unit
15
V
400
mW
Output current
IOUT max
0.6
A
Output withstand voltage
VOUT max
15
V
RD/FG output pin output
VRD/FG max
15
V
IRD/FG max
10
mA
IB max
10
mA
withstand voltage
RD/FG output current
HB output current
Operating temperature
Topr
-30 to +90
°C
Storage temperature
Tstg
-55 to +150
°C
*Mounted on a specified board : 20mm×10mm×0.8mm, paper phenol
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
42512 SY 20120323-S00010 No.A2043-1/7
LA6586FA
Recommended Operating Range at Ta = 25 °C
Parameter
Symbol
Conditions
Ratings
Unit
Supply voltage
VCC
2.2 to 14.0
V
Common-phase input voltage
VICM
0 to VCC-1.5
V
range of Hall input
Electrical Characteristics at Ta = 25 °C, VCC = 12 V
Parameter
Symbol
Ratings
Conditions
min
Circuit current
ICC1
During drive (CT = L)
ICC2
During lock protection (CT = H)
2.5
Lock detection capacitor charge current
ICT1
0.9
Capacitor discharge current
ICT2
0.10
Capacitor charge and discharge current ratio
RCT
CT charge voltage
CT discharge voltage
OUT output L saturation voltage
VOL
OUT output H saturation voltage
VOH
Input offset voltage
VOFST
Hall input sensitivity
VHN
Unit
typ
3
max
9
mA
5
7.5
mA
1.2
1.5
μA
0.18
0.25
μA
5
6.5
8
-
VCT1
1.3
1.5
1.7
V
VCT2
0.3
0.5
0.7
V
IO = 200 mA
0.25
0.45
V
IO = 200 mA
0.95
1.2
3
6
mV
7
15
mV
1.5
1.7
V
0.15
0.3
V
1
30
μA
180
210
°C
RCT = ICT1/ICT2
6
Zero peak value
V
(including offset and hysteresis)
Hall bias output L voltage
VHB
IHB = 5 mA
RD/FG input pin L voltage
VFG
IRD/FG = 5 mA
1.3
RD/FG input pin leak current
IFGL
VRD/FG = 15 V
Overheat protection circuit
TSD
(*1) Designed target value
150
(*1) The standard is a design target and the measurement with a single unit is not made.
Package Dimensions
unit : mm
3428
Pd max -- Ta
0.5
0.55
4.9
3.0
10
1 2
0.5
0.16
1.03
0.25
Allowable power dissipation, Pd max -- W
3.0
Specified board : 20mm×10mm×0.8mm3
paper phenol
0.4
0.3
0.2
0.1
0
-30
0.1
0.192
-10
10
30
50
70
90
110
Ambient temperature, Ta -- C
SANYO : Micro10
No.A2043-2/7
LA6586FA
Truth Table
IN-
IN+
CT
OUT1
H
L
L
H
L
H
L
-
-
OFF
OFF
-
H
OUT2
FG
RD
Mode
L
L
L
During rotation
H
H
H
During overheat protection
Pin Assignment
IN+
RD
HB
FG
LA6586FA
IN-
VCC
OUT2
CT
GND
OUT1
(Top view)
Sample Application Circuit
Di
Cr
*4
VCC
*1
R2
RD
HB
FG
HB
LA6586FA
H
*2
OUT1
IN+
R2
*5
OUT2
CT
GND
R1
*3
H
IN+
On board element
*1
*2
*3
*4
*5
To enhance the reliability, it is necessary to insert a capacitor Cr to secure the regenerative current route.
To obtain Hall bias from VCC, carry out 1/2×VCC bias as shown in the figure. Linear driving is 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.
To obtain Hall bias from the HB pin, carry out constant-voltage bias at about 1.5 V. which enables the Hall
element to generate the stable Hall output satisfactory in temperature characteristics. The Hall output amplitude
is adjusted with R1. (In the case of VCC = 12 V, *2 proves advantageous in terms of heat generation in IC.)
Keep this open when not used.
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.
No.A2043-3/7
LA6586FA
Internal Equivalent Circuit
VCC
1.5VRG
HB
IN+
OUT1
H
OUT2
IN-
GND
FG
Control
circuit
Charge discharge
RD
Discharge pulse
Test Circuit Diagram
Input current (ICC)
A
VIN+=3V
VCC
OUT2
GND
CT
OUT1
6
IN-
7
FG
8
HB
9
RD
10
IN+
VCC=12V
1
2
3
4
5
VIN-=4V
VCT=0 or 2V
No.A2043-4/7
LA6586FA
CT pin charge/discharge current (ICT)
VCC
OUT2
GND
CT
OUT1
6
IN-
7
FG
8
HB
9
RD
10
IN+
VCC=12V
1
2
3
4
5
A
VIN-=2V
VIN+=0V
VCT=0.2 or 2V
CT pin charge/discharge voltage (VCT)
VCC
OUT2
GND
CT
OUT1
6
IN-
7
FG
8
HB
9
RD
10
IN+
VCC=12V
1
2
3
4
5
Mesure VCT st changeover og ICT
A
OUT output saturation voltage (VOL, VOH)
IO
V
VIN+=2V
VCC
OUT2
GND
CT
OUT1
6
IN-
7
FG
8
HB
9
RD
10
IN+
VCC=12V
1
2
3
4
5
VIN-=1V
IO
V
No.A2043-5/7
LA6586FA
Input offset voltage (VOFST)
V
VCC
OUT2
GND
CT
OUT1
6
IN-
7
FG
8
HB
9
RD
10
IN+
VCC=15V
1
2
3
4
5
V
VIN=5V
VOFST=(VOUT-5)/360
* 360 is the amplifier gain
Hall input sensitivity (VHN)
OUT2
GND
CT
OUT1
6
VCC
7
IN-
8
FG
9
HB
10
RD
V
IN+
VCC=12V
1
2
3
4
5
Measure tje input voltage
at changeover of FG
VIN+=1V
Hall bias output voltage (VHB)
VCC
OUT2
GND
CT
OUT1
6
IN-
7
FG
8
HB
9
RD
10
IN+
VCC=12V
1
2
3
4
5
V
No.A2043-6/7
LA6586FA
FG, RD input pin L voltage (VFG, RD)
OUT2
GND
CT
OUT1
6
VCC
7
IN-
8
FG
9
HB
10
RD
V
IN+
VCC=12V
1
2
3
4
5
VIN+=0V
VIN-=1V
FG, RD input pin leakage current (IFGL, RDL)
RFG
RRD
VIN+=1V
OUT2
GND
OUT1
6
CT
7
VCC
8
IN-
9
FG
10
HB
V
RD
15V
IN+
VCC=12V
1
2
3
4
5
VIN-=0V
VCT =1.8V
IFGL,RDL=(15-VFG,RD)/RRD,FG
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PS No.A2043-7/7
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