LB11851MC Datasheet, PDF (2/5 Pages) ON Semiconductor – Microprocessor Fan Motor Interface Driver

LB11851MC
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
OUTN pin maximum output current
VCC max
IOUTN max
18
V
20
mA
OUTP pin maximum output current
IOUTP max
20
mA
OUT pin voltage handling capacity
VOUT max
18
V
5VREG maximum output current
Allowable power dissipation
I5VREG max
Pd max
When mounted on the specified circuit board *1
20
mA
0.75
W
Operating temperature
Topr
*2
-30 to +90
°C
Storage temperature
Tstg
-55 to +150
°C
*1 Specified substrate : 114.3mm × 76.1mm × 1.6mm, glass epoxy board.
*2 Do not exceed Tj max = 150°C
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.
Recommended Operating Ranges at Ta = 25°C
Parameter
Symbol
Supply voltage - VCC
PWM high-level input voltage range
VCC
VPWMINH
PWM low-level input voltage range
VPWMINL
FGIN high-level input voltage range
VFGINH
FGIN low-level input voltage range
VFGINL
SENSE input voltage range
VSENop
Conditions
Ratings
Unit
6 to 16
V
2.1 to 5
V
0 to 0.4
V
2.1 to 5
V
0 to 0.3
V
0 to 5
V
Electrical Characteristics at Ta = 25°C, VDD = 12V
Parameter
Circuit current
5VREG voltage
Symbol
ICC1
5VREG
Conditions
With no load
5VREG = 10mA
Ratings
Unit
min
typ
max
3.5
5
6.5
mA
4.8
5
5.2
V
SENSE pin detection voltage
VSENth
0.15
0.19
0.23
V
FGIN high-level input current
FGIhi
FGIN low-level input current
FGIlow
PWMIN high-level current
PWMIhi
PWMIN low-level current
PWMIlow
OUT1P, OUT2P high-level output
voltage
OUT1P, OUT2P low-level output
voltage
OUT1N, OUT2N high-level output
voltage
OUT1N, OUT2N low-level output
voltage
VO12PH
VO12PL
VO12NH
VO12NL
*1 : There is a built-in 100Ω gate protection resistor.
*2 : There is a built-in 300Ω gate protection resistor.
VIN = 3V
VIN = 0V
VIN = 3V
VIN = 0V
IO = 10mA *2
IO = 10mA *2
IO = 10mA *1
IO = 10mA *1
60
80
100
μA
-27
-21
-15
μA
35
45
55
μA
-27
-21
-14
μA
10
11
11.9
V
3
4
5
V
9
10
11.9
V
0.1
1
2
V
Truth Table
FGIN
L
PWMIN
L
SENSE
L
OUT1P
L
OUT1N
L
OUT2P
H
OUT2N
H
Mode
OUT1 → 2 drive
H
H
H
L
L
OUT2 → 1 drive
L
H
L
H
L
H
H
Regeneration mode
H
H
H
H
L
(low side regeneration)
L
L
H
H
L
H
H
Current limiter
H
H
H
H
L
(low side regeneration)
Note 1 : For the SENSE pin, the "H" state is 0.2V or higher.
Note 2 : The IC goes to regeneration mode (no motor drive applied) when the microcontroller is reset (the output high-impedance state).
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