ENA2311 D

Ordering number : ENA2311
LV8161MU
Monolithic Linear IC
Single-Phase Fan Motor Driver
http://onsemi.com
Overview
LV8161MU is the driver IC with BTL linear output for single-phase fan motor, and that drives at low noise by
suppressing the reactive power. Moreover, it has the function to fix to the rotational speed corresponding to
the oscillatory frequency set with CIN/COUT pins, and that speed control is done by PWM. So, the output
signal forms BTL combined with PWM.
It is optimum for the small fan motor that requires low power dissipation, low noise, and the fixed rotational
speed.
Function
• Single-phase full wave operating by BTL output
(BTL amplifier gain: +45.5dB)
• The fixed rotational speed function
(possible to adjust the speed by the value of resistor
and capacitor connected to CIN/COUT pins)
• Hall bias output pin (VHB = 1.03V (typ))
• FG (rotation signal) output pin (Open drain output)
• Built-in motor start-up assistance function
(PWM with 100% duty in output at start-up)
• Built-in lock protection and automatic restart circuit
• Built-in thermal-shutdown (TSD) circuit
UDFN10 (2.5 × 2.0)
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC max
7
V
OUT1/2 output current
IOUT max
0.7
A
OUT1/2 output voltage handling
VOUT max
7
V
10
mA
HB output current
IHB max
CIN output voltage handling
VPWM
7
V
FG output current
IFG max
5
mA
FG output voltage handling
VFG max
Allowable power dissipation
Pd max
IC on board*
7
Operating temperature
Topr
Tj<150°C
Storage temperature
Tstg
900
V
mW
-30 to 95
°C
-55 to 150
°C
* Specified board: 105mm × 120mm × 1.6mm, grass epoxy board / two layers.
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed,
damage may occur and reliability may be affected.
ORDERING INFORMATION
See detailed ordering and shipping information on page 11 of this data sheet.
Semiconductor Components Industries, LLC, 2014
April, 2014
40914NK 20140228-S00001 No.A2311-1/11
LV8161MU
Recommended Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
min
typ
Unit
max
Recommended Supply voltage
VCC
5.0
V
Operating supply voltage
VCC op
2.2
6.0
V
Hall amplifier common mode
VICM
0.3
1.5
V
400
kHz
input voltage range
Feedback resistance
RCOUT
CIN input frequency range
fCIN
Resistance between COUT pin and CIN pin
5
kΩ
10
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended
Operating Ranges limits may affect device reliability.
Electrical Characteristics at Ta = 25°C, VCC = 5V
Parameter
Symbol
Conditions
Ratings
min
typ
Unit
max
Circuit current
ICC
HB bias voltage
VHB
OUT1/2 output “H” voltage
VOH
IOUT=-200mA (VOH=VCC-VOUT)
0.16
0.24
V
OUT1/2 output “L” voltage
VOL
IOUT=200mA
0.10
0.15
V
Hall amplifier
VINOFS
IHB=-5mA
0.90
1.8
2.7
mA
1.03
1.20
V
-10
10
mV
output offset voltage
Hall amplifier voltage gain
GH
Hall comparator hysteresis width
ΔVHIN
44.0
45.5
47.0
±15
*1
dB
mV
CIN input “H” threshold level
VCINH
2.365
2.490
2.615
V
CIN input “L” threshold level
VCINL
1.190
1.255
1.320
V
CIN input hysteresis width
ΔVCIN
1.175
1.235
1.295
COUT output “H” voltage
VCOH
ICOH=-0.5mA (VCOH=VCC-VCOUT)
60
80
100
mV
COUT output “L” voltage
VCOL
ICOL=0.5mA
60
80
100
mV
Number of counts at speed
N1
990
N2
1010
42
kHz
24
%
V
detection 1
Number of counts at speed
detection 2
PWM frequency
fPWM
22
32
PWM minimum “H” duty
DHmin
FG output “L” voltage
VFGL
IFG=3mA
16
20
0.3
V
FG output leakage current
IFGL
VFG=7V
10
μA
Output on time in lock-detection
LT1
0.4
0.6
0.8
s
Output off time in lock-detection
LT2
4
6
8
s
Output on/off time ratio
LRTO
LRTO=LT2/LT1
9
10
11
TSD
*1
180
°C
ΔTSD
*1
30
°C
In lock detection
Thermal-shutdown operating
temperature
Thermal-shutdown
hysteresis width
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be
indicated by the Electrical Characteristics if operated under different conditions.
No.A2311-2/11
LV8161MU
Package Dimensions
UDFN10 2.5x2, 0.5P
CASE 517CM
ISSUE O
L
A B
D
L
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DIMENSIONS b APPLIES TO PLATED
TERMINAL AND IS MEASURED BETWEEN
0.15 AND 0.30 MM FROM TERMINAL TIP.
4. COPLANARITY APPLIES TO THE EXPOSED
PAD AS WELL AS THE TERMINALS.
L1
PIN ONE
REFERENCE
E
DETAIL A
ALTERNATE TERMINAL
CONSTRUCTIONS
0.10 C
2X
A3
0.10 C
2X
0.05 C
EXPOSED Cu
TOP VIEW
DETAIL B
A
(A3)
DIM
A
A1
A3
b
D
E
e
L
L1
L2
MOLD CMPD
A1
DETAIL B
ALTERNATE
CONSTRUCTIONS
0.05 C
NOTE 4
A1
SIDE VIEW
C
SEATING
PLANE
GENERIC
MARKING DIAGRAM*
DETAIL A
1
5
XXXM
10X
L
L2
10
XXX = Specific Device Code
M = Date Code
= Pb−Free Package
6
e
BOTTOM VIEW
MILLIMETERS
MIN
MAX
0.45
0.55
0.00
0.05
0.13 REF
0.20
0.30
2.50 BSC
2.00 BSC
0.50 BSC
0.70
0.90
0.00
0.15
0.20 REF
10X
b
0.10
M
C A B
0.05
M
C
NOTE 3
RECOMMENDED
MOUNTING FOOTPRINT
9X
10X
0.32
1.05
PACKAGE
OUTLINE
2.30
1
0.43
0.50 PITCH
DIMENSIONS: MILLIMETERS
No.A2311-3/11
LV8161MU
Pd max -- Ta
1.5
1.0
0.90
0.5
0.40
0
0
30
60
90
120
Pin Assignment
Package: UDFN10 2.5x2.0
PIN#1 ID
IN1
1
10
HB
2
9
CIN
IN2
3
8
FG
OUT1
4
7
VCC
GND
5
6
OUT2
COUT
(Top view)
No.A2311-4/11
LV8161MU
Block Diagram
IN1
LOCK
DETECTION
1
INTERNAL
CLOCK
10 COUT
OSC
HB
2
HB
TSD
ENABLE
9
CIN
8
FG
SPEED
DETECTION
LEVEL
SHIFT
PWM
CONTROL
IN2
3
OUT1
4
7
VCC
GND
5
6
OUT2
No.A2311-5/11
LV8161MU
Pin Function
Pin No.
1
Pin name
IN1
Function
Equivalent circuit
Hall input pin(1).
VCC
1
GND
3
GND
3
IN2
Hall input pin (2).
Input the opposite phase signal to IN1 input.
GND
GN D
2
HB
Regulated voltage output pin.
VCC
It is used for Hall bias. It is necessary to open when not using it.
Not to use HB bias and VCC bias together.
VCC
2
GND
4
OUT1
Output pin for motor drive (1).
6
OUT2
Output pin for motor drive (2).
GND
VCC
4
6
GND
5
GND
7
VCC
GND pin.
Power supply pin.
The input voltage to this terminal must be stabilized without
the influence of the noise, ripple, and etc.
Therefore, it is necessary to connect the capacitor near VCC
terminal and GND terminal as much as possible. It must be
over 1uF about the value of this capacitor. Not to detach it.
Continued on next page.
No.A2311-6/11
LV8161MU
Continued from preceding page.
Pin
Pin name
Function
Equivalent circuit
No.
8
FG
Output pin of the rotational signal.
VCC
It is necessary to open when not using it.
8
GND
GND
9
CIN
Input pin of the clock for setting the rotational speed.
VCC
9
GND
10
COUT
Output pin of the signal reversing CIN clock.
It works self-oscillating by returning this output signal through
GND
VCC
VCC
the filter with resistor and capacitor to CIN pin.
150Ω(typ)
10
GND
GND
No.A2311-7/11
LV8161MU
Application Circuit Example
*5
H
1 [IN1]
[COUT] 10
2 [HB]
[CIN] 9
3 [IN2]
[FG] 8
*1
4 [OUT1]
[VCC] 7
5 [GND]
[OUT2] 6
(
*2
)
FG_OUT
(
)
*3
M
*1. The hall signal must be wired as short as possible for avoiding the noise.
If in influence of the noise, insert the capacitor between IN1 and IN2.
*2. It is recommendation that the resistance of 1kΩ or more is connected to FG pin to the series
when GND-open or mis-connecting.
*3. The power-supply voltage might rise by the influence of the coil kickback etc. when using the
diode for preventing the destruction at reverse-connected. In that case, insert the zener diode
between the power supply and GND, and suppress the rise of the voltage of VCC pin.
*4. It is necessary to wire the VCC and the GND line as wide and short as possible.
*5. The reference clock that decides the rotational speed is generated with the connection of C1 pin,
COUT pin, R1, and C1 as shown in figure. The relation among rotational speed N [rpm] of
the motor with m-poles and the cycle of the reference clock T [s] is as follows.
N m
1
× =
60 2 1000 × T
Otherwise, the relation among T[s], C1 [F], and R1 [Ω] is as follows in consideration of 150 [Ω]
built into COUT terminal.
T = 1.09862 × C1 × (R1 + 150 )
Therefore, the relation among rotational speed N [rpm] of the motor with m-poles, C1 [F], and
R1 [Ω] is led from above formula as follows.
N m 910.2328 E − 6
× =
60 2 C1 × (R1 + 150)
For example, when setting to rotate the motor with 4-poles at 2,700 [rpm] as C1=1,000 [pF],
2700 4
910.2328E − 6
× =
60
2 1000 E − 12 × (R1 + 150)
910232.8
⇔ R1 =
− 150 = 9.964[kΩ]
90
Actually, the error margin of rotational speed is caused by the operation time of the circuit, the
influence of parasitic elements on the circuit board, etc. Therefore, the value of C1 and R1 should
be decided by confirming with the operation with the actual motor.
When the value of C1 or R1 changes by the thermal condition or the manufacturing tolerance etc,
the rotational speed of the motor changes. So, it is necessary to use the capacitor and the resistor
with better characteristics when high accuracy at rotational speed is needed.
No.A2311-8/11
LV8161MU
*Truth table
IN1
IN2
H
L
(PWM) *1
OUT1
H
L
H
FG
H
L
X
L
OUT2
L
Drive (OUT2 to OUT1)
Z
Z
H
H
L
L
X
Z
Mode
Regenerate
Lock protection *2
Drive (OUT1 to OUT2)
L
L
Regenerate
Lock protection *2
X: Don’t care, Z: High impedance
*1. (PWM) is assumed the PWM signal generated in IC
*2. When FG pulse is not generated in Output-On-time on Lock-Detection mode,
it goes into the state of Lock-Protection.
No.A2311-9/11
LV8161MU
Timing Chart
• Start Up
VCC
FG
OUT1
OUT2
(1)
(2)
(3)
(4)
(5)
(6)
Start-Up mode = 100% High duty in output
Normal mode
= Duty Controlled by FG feedback
Start Up
# Output duty control switches from Start-Up mode to Normal mode after counting FG edge to 6.
• PWM duty control by FG feedback
FG
4*TN *990 < T4*FG < 4*TN *1010
4*TN *1010 < T4*FG
T4*FG < 4*TN *990
4*TN *990 < T4*FG < 4*TN *1010
PWM duty “No Change”
to previous 4 periods of FG
PWM duty “Increasing”
for previous 4 periods of FG
PWM duty “Decreasing”
for previous 4 periods of FG
PWM duty
“No Change”
PWM
OUTPUT
# T4*FG: Time of 4 periods of FG output, TN: Cycle time of COUT oscillation
• Lock protection and Auto re-start
Motor re-rotation
Motor Lock
IN1-IN2
OUT1
OUT2
FG
TACT
[=0.6sec(typ)]
Waiting for FG pulse
TDET
[=6sec(typ)]
Lock protection
Re-start
# In the mode of motor protection, high side output turns to high impedance.
No.A2311-10/11
LV8161MU
ORDERING INFORMATION
Device
LV8161MUTAG
Package
UDFN10 (2.5 × 2.0)
(Pb-Free / Halogen Free)
Shipping (Qty / Packing)
3000 / Tape & Reel
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PS No.A2311-11/11
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