The LV8805SV is a motor driver for PC and server fans.
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Feature
Direct PWM three-phase sensorless motor driver.
Typical Applications
PC and Server
Refrigerator
Server
Desktop Computer
SSOP20J (225mil)
Specifications
Absolute Maximum Ratings
at Ta = 25C
Parameter
VCC maximum supply voltage
VG maximum supply voltage
OUT pin withstand voltage
OUT pin maximum output
SOFTST pin withstand voltage
FR pin withstand voltage
PWMIN pin withstand voltage
FG output pin withstand voltage
FG pin output current
RD output pin withstand voltage
RD pin output current
Allowable Power dissipation 1
Allowable Power dissipation 2
Operating temperature
Storage temperature
Symbol
VCC max
VG max
VOUT max
IOUT max
VSOFTST max
VFR max
VPWMIN max
VFG max
IFG max
VRD max
IRD max
Pd max1
Pd max2
Topr
Tstg
*2
Independent IC
Mounted on designated board *1
UO pin, VO pin, WO pin
Conditions
Ratings
16
21
16
1.2
6
6
6
16
5
16
5
0.3
0.95
40
to +95
55
to +150
Unit
V
V
V
A
V
V
V
V
mA
V
mA
W
W
C
C
*1: When mounted on the designated 76.1mm × 114.3mm × 1.6mm, glass epoxy board (single-layer)
*2: Do not exceed Tjmax=150C.
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 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.
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
½
25C, VCC = 12V, unless otherwise specified
Parameter
Circuit current 1
Charge pump block
Charge pump output voltage
Regulator block
5V regulator voltage
Output on resistance
Sum of high-/low-side output transistor on
resistance
Startup oscillator (OSC) pin
OSC pin charge current
OSC pin discharge current
PWM input (PWMIN) pin
High-level input voltage range
Low-level input voltage range
Range of PWM input frequency
Minimum pulse width
Duty cycle range is determined by
(T
MINPW
x
f
PWMIN
) x 100% for minimum
(1
−
T
MINPW
x
f
PWMIN
) x 100% for maximum
When
f
PWMIN
= 60[kHz], the input PWM duty cycle range = 1.2% - 98.8%
When
f
PWMIN
= 50[kHz], the input PWM duty cycle range = 1.0% - 99.0%
When
f
PWMIN
= 25[kHz], the input PWM duty cycle range = 0.5% - 99.5%
When
f
PWMIN
= 15[kHz], the input PWM duty cycle range = 0.3% - 99.7%
Forward/reverse switching pin
High-level input voltage range
Low-level input voltage range
FG and RD output pins
FG output pin low-level voltage
FG output pin leak voltage
RD output pin low-level voltage
RD output pin leak voltage
Current limiter circuit
Limiter voltage
Constraint protection circuit
CT pin high-level voltage
CT pin low-level voltage
CT pin charge current
CT pin discharge current
ICT charge/discharge ratio
VCTH
VCTL
ICTC
ICTD
RCT
2.25
0.43
2.9
0.21
7
2.8
0.5
2.5
0.25
10
2.95
0.65
2.1
0.32
13
V
V
A
A
VRF
Limit current set to 1A when RF is 0.25.
0.225
0.25
0.275
V
VFG
ILFG
VRD
ILRD
When IO is 2mA
When VFG is 16V
When IO is 2mA
When VRD is 16V
0.25
0.25
0.35
1
0.35
1
V
A
V
A
VFRH
VFRL
Order of current application :
UOUTVOUTWOUT
Order of current application :
UOUTWOUTVOUT
0
1
V
2.3
VREG
V
VPWMINH
VPWMINL
fPWMIN
TMINPW
Input HIGH voltage 5[V] and
input LOW voltage 0[V]
2.3
0
15
VREG
1
60
0.2
V
V
kHz
s
IOSCC
IOSCD
-2.5
2.5
A
A
Ron (H+L)
IO = 0.7A, VCC = 12V, VG = 17V
1.2
2
VVREG
4.75
5
5.25
V
VVG
17
V
Symbol
ICC1
Conditions
Ratings
min
typ
2.6
max
3.6
Unit
mA
Continued on next page.
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2
LV8805SV
Continued from preceding page.
Parameter
Soft start circuit
Soft start releasing voltage
SOFTST pin charge current
Thermal protection circuit
Thermal protection circuit operating
temperature
* : Design target value and no measurement is made. The thermal protection circuit is incorporated to protect the IC from burnout or thermal destruction. Since
it operates outside the IC's guaranteed operating range, the customer's thermal design should be performed so that the thermal protection circuit will not be
activated when the fan is running under normal operating conditions.
TSD
Design target *
150
180
210
C
VSOFTST
ISOFTST
2.5
0.6
V
A
Symbol
Conditions
Ratings
min
typ
max
Unit
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.
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3
LV8805SV
Package Dimensions
unit : mm
SSOP20J (225mil)
CASE 565AP
ISSUE A
SOLDERING FOOTPRINT*
5.80
1.0
(Unit: mm)
0.32
XXXXXXXXXX
YMDDD
GENERIC
MARKING DIAGRAM*
0.50
XXXXX = Specific Device Code
Y = Year
M = Month
DDD = Additional Traceability Data
NOTE: The measurements are not to guarantee but for reference only.
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
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