Ordering number : ENA1112
Monolithic Digital IC
LB11852FV
Overview
For Fan Motor
Single-phase Full-wave Pre-driver
with Speed Control Function
The LB11852FV is a single-phase bipolar driving motor pre-driver with a speed control function based on speed feedback.
With a small number of external parts, a highly efficient and very quiet variable-speed drive fan motor with low power
consumption and high rotational accuracy can be implemented. The LB11852FV, integrated in a miniature package, is best
suited for driving small fan motors requiring speed control.
Features
•
Single-phase full-wave driving pre-driver
⇒
With a PMOS-NMOS device used as the external power transistor, low saturation output and a single-phase
full-wave drive enable a high-efficiency drive with low power consumption.
•
Speed control circuit incorporated
⇒
Compared with open-loop control, a closed-loop control function that uses speed feedback to control the speed
makes it possible to improve the rotational speed accuracy and reduce the variations in the rotational speed caused
by fluctuations in the supply voltage or load. The separately excited upper direct PWM method is featured as the
variable speed system.
•
Variable speed control is possible with external PWM input or analog voltage input
⇒
The speed control input signal is compatible with PWM duty ratio and analog voltages.
•
Soft start circuit incorporated
•
Minimum speed setting pin
⇒
The minimum speed can be set using an external resistor.
•
Current limiting circuit incorporated
⇒
Chopper type current limit at startup or lock.
•
Reactive current cut circuit incorporated
⇒
Reactive current before phase changeover is cut, ensuring highly silent and low power-consumption drive.
•
Automatic resetting type constraint circuit incorporated
•
FG (rotational speed detection) output
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer
'
s products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
'
s products or
equipment.
40208 MS PC 20080225-S00005 No.A1112-1/12
LB11852FV
Specifications
Absolute Maximum Ratings
at Ta = 25°C
Parameter
VCC pin maximum supply voltage
OUTN pin maximum output current
OUTP pin maximum Sink current
OUT pin output withstand voltage
HB maximum output current
CTL, C pin withstand voltage
CVI, LIM pin withstand voltage
RD/FG output pin output withstand
voltage
RD/FG output current
5VREG pin maximum output current
Allowable power dissipation
Operating temperature
Storage temperature
FG max
I5VREG max
Pd max
Topr
Tstg
Mounted on a specified board *1
10
10
0.8
-30 to 95
-55 to 150
mA
mA
W
°C
°C
Symbol
VCC max
IOUTN max
IOUTP max
VOUT max
HB
CTL, C max
CVI, LIM
max
FG max
19
V
Conditions
Ratings
18
20
20
18
10
7
7
Unit
V
mA
mA
V
mA
V
V
*1 Mounted on a specified board : 114.3mm×76.1mm×1.6mm, glass epoxy
*2 Tj max = 150°C. Use the device in a condition that the chip temperature does not exceed Tj = 150°C during operation.
Recommended Operating Conditions
at Ta = 25°C
Parameter
VCC supply voltage 1
VCC supply voltage 2
CTL input voltage range
LIM input voltage range
VCI input voltage range
Hall input common phase input
voltage range
Symbol
VCC1
VCC2
VCTL
VLIM
VCVI
VICM
VCC pin
VCC -5VREG
Conditions
Ratings
5.5 to 16
4.5 to 5.5
0 to 5VREG
0 to 5VREG
0 to 5VREG
0.2 to 3
Unit
V
V
V
V
V
V
Electrical Characteristics
at Ta
=
25°C, VCC = 12V, unless otherwise specified
Parameter
Circuit current
Symbol
ICC1
ICC2
5VREG voltage
Current limiting voltage
CPWM pin H level voltage
CPWM pin L level voltage
CPWM pin charge current
CPWM pin discharge current
CPWM oscillation frequency
CT pin H level voltage
CT pin L level voltage
CT pin charge current
CT pin discharge current
CT pin charge/discharge current ratio
OUTN pin output H voltage
OUTN pin output L voltage
OUTP pin output L voltage
Hall input sensitivity
5VREG
VLIM
VCRH
VCRL
ICPWM1
ICPWM2
FPWM
VCTH
VCTL
ICT1
ICT2
RCT
VONH
VONL
VOPL
VHN
VCT = 2V
VCT = 2V
ICT1/ICT2
IO = 10mA
IO = 10mA
IO = 10mA
IN+, IN- differential voltage
(including offset and hysteresis)
Continued on next page.
VCPWM = 0.5V
VCPWM = 3.5V
C = 220pF
2.8
0.9
1.6
0.16
8
During drive
During lock protection
I5VREG = 5mA
4.8
190
2.8
0.9
24
21
Conditions
Ratings
min
typ
12
12
5.0
210
3.0
1.1
30
27
30
3.0
1.1
2.0
0.20
10
VCC-0.85
0.9
0.5
±15
3.2
1.3
2.5
0.25
12
VCC-1.0
1.0
0.65
±25
max
15
15
5.2
230
3.2
1.3
36
33
Unit
mA
mA
V
mV
V
V
μA
μA
kHz
V
V
μA
μA
times
V
V
V
mV
No.A1112-2/12
LB11852FV
Continued from preceding page.
Parameter
FG output L voltage
FG pin leak current
EO pin output H voltage
EO pin output L voltage
RC pin output H voltage
RC pin output L voltage
RC pin clamp voltage
CTL pin input H voltage
CTL pin input L voltage
CTL pin input open voltage
CTL pin H input H current
CTL pin L input L current
C pin output H voltage
C pin output L voltage
LIM pin input bias current
LIM pin common phase input voltage
range
SOFT pin charge current
SOFT pin operating voltage range
ICSOFT
VISOFT
1.0
2.0
1.3
1.6
VREG
μA
V
Symbol
VFGL
IFGL
VEOH
VEOL
VRCH
VRCL
VRCCLP
VCTLH
VCTLL
VCTLO
ICTLH
ICTLL
VCH
VCL
IBLIM
VILIM
VFGIN = 5VREG
VFGIN = 0V
IFG = 5mA
VFG = 19V
IEO1 = -0.2mA
IEO1 = 0.2mA
3.2
0.7
1.3
2.0
0
VREG-0.5
-10
-120
VREG-0.3
1.8
-1
2.0
0
-90
VREG-0.1
2.0
2.2
1
VREG
VREG-1.2
VREG-0.8
0.8
3.45
0.8
1.5
1.1
3.7
1.05
1.7
VREG
1.0
VREG
10
Conditions
Ratings
min
typ
0.15
max
0.30
30
Unit
V
μA
V
V
V
V
V
V
V
V
μA
μA
V
V
μA
V
Package Dimensions
unit : mm (typ)
3360
1.0
Pd max -- Ta
When mounted on the thermal
resistance evaluation board
0.80
20
Allowable power dissipation, Pd max – W
5.2
0.8
4.4
6.4
0.6
12
0.5
(0.35)
1.5 MAX
(1.3)
0.5
0.22
0.15
0.4
Independent IC
0.2
0.30
0.35
0.13
0
–
30
0.1
0
30
60
90
120
Ambient temperature, Ta – °C
SANYO : SSOP20J(225mil)
No.A1112-3/12
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