Datasheet

UNISONIC TECHNOLOGIES CO., LTD
F2867
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LINEAR INTEGRATED CIRCUIT
VARIABLE SPEED
SINGLE-PHASE FULL-WAVE
PRE-DRIVER

DESCRIPTION
The UTC F2867 is a single-phase bipolar variable speed driving
motor pre-driver that works with external PWM signal. A highly
efficient, highly silent and low power consumption motor driver
circuit can be achieved with a few external parts. This product is
optimal for driving large scale fan motors requiring large air flow
and large current such as servers and consumer appliances.

TSSOP-16
FEATURES
* Pre-driver for single-phase full-wave drive
Low-saturation drive using external PMOS-NMOS enables
high-efficiency low power-consumption drive.
* External PWM input enabling variable speed control
Separately-excited upper direct PWM (f=30kHz) control method
enabling highly silent speed control.
* Current limiting 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 power-consumption drive.
* Minimum speed setting pin
Minimum speed can be set by set with external resistor.
* Soft start setting pin
* Lock protection and automatic reset functions incorporated
* FG (rotation speed detection) output
* Thermal shutdown circuit incorporated

ORDERING INFORMATION
Ordering Number
F2867G-P16-R
www.unisonic.com.tw
Copyright © 2016 Unisonic Technologies Co., Ltd
Package
TSSOP-16
Packing
Tape Reel
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F2867
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MARKING
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PIN CONFIGURATION
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PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
PIN NAME
OUT2P
OUT2N
VCC
SENSE
RMI
VTH
CPWM
FG
ININ+
CT
S-S
5VREG
SGND
OUT1N
OUT1P
LINEAR INTEGRATED CIRCUIT
DESCRIPTION
output2 pmos drive
output2 nmos drive
power supply
current limiting detection pin
minimum speed setting pin
speed control pin
pin to connect the capacitor for generation of the PWM basic frequency
rotation speed detection pin
Hall signal input
Hall signal input
pin to connect the lock detection capacitor
pin to connect the soft-start setting capacitor
5V reference voltage
power-GND
output1 nmos drive
output1 pmos drive
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www.unisonic.com.tw
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LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
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www.unisonic.com.tw
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LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING (TA=25°C unless otherwise specified)
PARAMETER
SYMBOL
VCC Pin Maximum Supply Voltage
VCC max
OUTN Pin Maximum Output Current
IOUTN max
OUTP Pin Maximum Sink Current
IOUTP max
OUT Pin Output Withstand Voltage
VOUT max
VTH, RMI Pins Withstand Voltage
VVTH, VRMI max
S-S Pin Withstand Voltage
VS-S max
FG Output Pin Withstand Voltage
VFG max
FG Pin Maximum Output Current
IFG max
5VREG Pin Maximum Output Current
I5VREG max
Allowable Power Dissipation (with specified substrate (Note 1))
Pd max
Operating Temperature (Note 2)
Topr
Storage Temperature
Tstg
Notes: 1. All typical values are at VCC=3.3V or VCC=5.0V, and TA=25°C.
2. Specified substrate: 114.3mm×76.1mm×1.6mm, glass epoxy board.
3. TJ max=150°C must not be exceeded.

UNIT
V
mA
mA
V
V
V
V
mA
mA
mW
°C
°C
RECOMMENDED OPERATING CONDITIONS (TA=25°C unless otherwise specified)
PARAMETER
VCC Supply Voltage
VTH, RMI Input Voltage Range
Hall Input Common-Phase Input Voltage Range

RATINGS
18
20
20
18
7
7
19
10
20
800
-30 ~ +95
-55 ~ +150
SYMBOL
VCC
VTH, RMI
VICM
RATINGS
5.5~16
0~5
0.2~3
UNIT
V
V
V
ELECTRICAL CHARACTERISTICS (VCC=12V, TA=25°C unless otherwise specified)
PARAMETER
SYMBOL
ICC1
Circuit Current
ICC2
5VREG Voltage
5VREG
Current Limiting Voltage
VLIM
CPWM Pin “h” Level Voltage
VCPWMH
CPWM Pin “L” Level Voltage
VCPWML
CPWM Pin Charge Current
ICPWM1
CPWM Pin Discharge Current
ICPWM2
CPWM Oscillation Frequency
FPWM
CT Pin “H” Level Voltage
VCTH
CT Pin “L” Level Voltage
VCTL
CT Pin Charge Current
ICT1
CT Pin Discharge Current
ICT2
CT
Pin
Charge/Discharge
RCT
Ratio
S-S Pin Discharge Current
IS-S
OUTN Output H-level Voltage
VONH
OUTN Output L-level Voltage
VONL
OUTP Output L-level Voltage
VOPL
Hall Input Sensitivity
FG Output L-level Voltage
FG Pin Leakage Current
VTH/RMI Pin Bias Current
TEST CONDITIONS
During drive
During lock protection
I5VREG = 5mA
MAX
9.5
9.5
5.10
215
3.2
1.3
36
33
VCT=0.5V
VCT=3.5V
2.8
0.9
1.6
0.16
TYP
7.5
7.5
4.95
200
3.0
1.1
30
27
30
3.0
1.1
2.0
0.20
3.2
1.3
2.5
0.25
UNIT
mA
mA
V
mV
V
V
μA
μA
kHz
V
V
μA
μA
ICT1/ICT2
8
10
12
times
VCPWM=0.5V
VCPWM=3.5V
C=220PF
VS-S=1V
IO=10mA
IO=10mA
IO=10mA
IN+, IN- differential voltage
VHN
(including offset and hysteresis)
VFGL
IFG=5mA
IFGL
VFG=19V
IVTH/IRMI CPWM=VTH/RMI=2V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
5.5
5.5
4.80
185
2.8
0.9
24
21
0.4
0.5
0.6
VCC-0.85 VCC-1.00
0.9
1.00
0.5
0.65
μA
V
V
V
±10
±20
mV
0.15
0.30
20
0.1
V
μA
μA
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LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
Notes: *1. Power−GND wiring
SGND is connected to the control circuit power supply system.
*2. Power stabilization capacitor
For the power stabilization capacitor on the signal side, use the capacitance of 1μF or more.
Connect VCC and GND with a thick and shortest pattern.
*3. Power stabilization capacitor on the power side
For the power stabilization capacitor on the power side, use the capacitance of 1μF or more.
Connect the power supply on the power side and GND with a thick and shortest pattern.
*4. IN+, IN- pins
Hall signal input pin.
Wiring should be short to prevent carrying of noise.
If noise is carried, insert the capacitor between IN+ and IN- pins.
The Hall input circuit functions as a comparator with hysteresis (15mV).
This also has a soft switch section with ±30mV (input signal differential voltage).
It is also recommended that the Hall input level is minimum 100mV (p-p).
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LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT (Cont.)
Notes: *5. CPWM pin
Pin to connect the capacitor for generation of the PWM basic frequency
The use of CP=220pF causes oscillation at f=30kHz, which is the basic frequency of PWM.
As this is used also for the current limiting canceling signal, be sure to connect the capacitor even when
the speed control is not made.
*6. RMI pin
Minimum speed setting pin.
Perform pull-up with 5VREG when this pin is not to be used.
If the IC power supply is likely to be turned OFF first when the pin is used with external power supply, be
sure to insert the current limiting resistor to prevent inflow of large current. (The same applies to the VTH
pin.)
*7. VTH pin
Speed control pin.
Connect this pin to GND when it is not used (at full speed).
For the control method, refer to the timing chart.
For control with pulse input, insert the current limiting resistor and use the pin with the frequency of
20k~100kHz (20kHz~50kHz recommended).
*8. SENSE pin
Current limiting detection pin.
When the pin voltage exceeds 0.2V, the current is limited and the operation enters the lower regeneration
mode.
Connect this pin to GND when it is not to be used.
*9. FG pin
Rotation speed detection pin.
This is an open collector output, which can detect the rotation speed from the FG output according to the
phase changeover.
Keep this pin open when it is not to be used.
*10. CT pin
Pin to connect the lock detection capacitor.
The constant-current charge and discharge circuits incorporated cause locking when the pin voltage
becomes 3.0V and unlocking when it is 1.1V. Connect the pin to GND when it is not to be used (locking
not necessary).
*11. S-S pin
Pin to connect the soft-start setting capacitor.
Connect the capacitor between 5VREG and S-S pin.
This pin enables setting of the soft start time according to the capacity of the capacitor.
See the timing char.
Connect the pin to GND when it is not to be used.
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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