LB11967V
Single-Phase Full-Wave Pre-Driver
for Variable Speed Fan Motor
Overview
The LB11967V is a single-phase bipolar variable speed fan motor pre-driver
that works with an external PWM signal.
A highly efficient, quiet and low power consumption motor driver circuit,
with a large variable speed, can be implemented by adding a small number of
external components.
This device is optimal for driving large scale fan motors (with large air
volume and large current) such as those used in servers and consumer
products.
Functions
•
Pre-driver for single-phase full-wave drive
PNP-EMOS is used as an external power Transistor, enabling
high-efficiency low-consumption drive by means of the low-saturation
output and single-phase full-wave drive. (PMOS-NMOS also applicable)
•
External PWM input enabling variable speed control
Separately-excited upper direct PWM (f = 25kHz) control method, enabling
highly silent speed control
•
Compatible with 12V, 24V, and 48V power supplies
•
Current limiter circuit incorporated
Chopper type current limit at start
•
Reactive current cut circuit incorporated
Reactive current before phase change is cut to enable silent and
low-consumption drive.
•
Minimum speed setting pin
Minimum speed can be set with external resistor. The start assistance circuit
enables start at extremely low speed.
•
Constant-voltage output pin for Hall bias
•
Lock protection and automatic reset functions incorporated
•
(Rotation speed detection), RD (Lock detection) output
Applications
•
Computing & Peripherals
•
Consumer
•
Server
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SSOP20 (225mil)
XXXXXXXXXX
YMDDD
XXXXX = Specific Device Code
Y = Year
M = Month
DDD = Additional Traceability Data
ORDERING INFORMATION
See detailed ordering and shipping
information on page 10 of this data
sheet.
© Semiconductor Components Industries, LLC, 2016
1
November 2016- Rev. 1
Publication Order Number:
LB11967V/D
LB11967V
Specifications
Maximum Ratings
at Ta = 25C
Parameter
VCC maximum supply voltage
OUT pin maximum output current
OUT pin output withstand voltage
HB maximum output current
VTH input pin withstand voltage
RD/FG output pin output
withstand voltage
RD/FG output current
Allowable power dissipation
Operating temperature range
Storage temperature range
IRD/IFG max
Pd max
Topr
Tstg
Mounted on a specified board
(Note2)
10
800
-30 to +95
-55 to +150
mA
mW
C
C
(Note1)
Conditions
Ratings
18
50
18
10
8
18
Unit
V
mA
V
mA
V
V
Symbol
VCC max
IOUT max
VOUT max
IHB max
VVTH max
VRD/VFG max
1.
Stresses exceeding those listed in the Maximum Rating 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.
2.
Specified board: 114.3mm × 76.1mm × 1.6mm, glass epoxy board.
Recommended Operating Conditions
at Ta = 25C
Parameter
VCC supply voltage
VTH input level voltage range
Hall input common phase input
Symbol
VCC
VTH
VICM
(Note3)
Conditions
Ratings
6 to 16
Unit
V
V
V
Full speed mode
0 to 7
0.2 to 3
voltage range
3.
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 = 25C, VCC = 12V, unless otherwise specified.
Parameter
Circuit current
Symbol
ICC1
ICC2
6VREG voltage
HB voltage
VOVER voltage
CPWM-H level voltage
CPWM-L level voltage
CPWM oscillation frequency
CT pin H level voltage
CT pin L level voltage
ICT pin charge current
ICT pin discharge current
ICT charge/discharge current ratio
OUT-N output voltage
OUT-P sink current
Hall input sensitivity
RD/FG output pin L voltage
RD/FG output pin leak current
6VREG
VHB
VVOVER
VCRH
VCRL
FPWM
VCTH
VCTL
ICT1
ICT2
RCT
VON
IOP
VHN
VRD/VFG
Zero peak value
(including offset and hysteresis)
IRD/IFG = 5mA
VCT = 1.2V
VCT = 4.0V
ICT1/ICT2
IO = 20mA
C = 100pF
During drive
During lock protection
I6VREG = 5mA
IHB = 5mA
IVOVER = 1mA
Conditions
(Note4)
Ratings
Unit
min
6
6
5.80
1.05
12.0
4.35
1.45
18
3.4
1.4
1.6
0.16
8
4
15
typ
10
10
6.0
1.22
12.8
4.55
1.65
25
3.6
1.6
2.0
0.20
10
10
20
10
0.15
max
14
14
6.15
1.35
13.6
4.75
1.85
32
3.8
1.8
2.5
0.28
12
mA
mA
V
V
V
V
V
kHz
V
V
A
A
deg
V
mA
20
0.3
mV
V
IRDL/IFGL
VRD/VFG = 16V
30
A
4.
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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