FA1210
Highly Efficient Single-Phase Full-wave FAN Motor Driver
Overview
The FA1210 is a highly efficient Single-Phase
Brushless DC FAN motor driver with analog voltage
speed control. Many safety features were incorporated
to ensure the reliability of motor operation.
The FA1210 is designed with minimal external
components to improve reliability.
Feature
Package
HTSSOP14
TSSOP20
Speed Control by analog voltage
Soft-Start circuit
FG output signal
Built-in Hall bias circuit
Minimum speed setting
Soft switch for quiet drive
Advanced CMOS process and low Rds
Built-in triangular wave generator, No capacitor
need
Built-in lock protection and automatic recovery
circuit, No capacitor need
Built-in thermal shutdown protection(TSD)
Built-in over current protection(OCP)
Built-in under voltage lock out (UVLO)
Ordering information
Application
Variable speed BLDC fan for CPU/VGA cooler, power
supplier, game console, etc.
Name
FA1210H
Package
HTSSOP14
FA1210H-R(Reel)
FA1210T-T(Tube)
FA1210T
TSSOP20
FA1210T-R(Reel)
Model Order
FA1210H-T(Tube)
Block Diagram
FG
VCC
VREG6
HB
H_INP
Hall
H_INN
SAW Tooth
Generator
LDO
TSD
Control Engine
OCP
MOTV
Pre
Driver
1.25V
M
MOTU
Lock
Protection
VSS
SMIN VTH
F-GND
REV_1.1
1
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FA1210
Pin Configuration (Top view)
F-GND
1
F-GND
F-GND
F-GND
2
MOTV
VCC
SMIN
VTH
NC
FG
NC
1
2
3
4
5
6
7
14
MOTU
13
20
F-GND
19
F-GND
18
F-GND
17
MOTU
F-GND
3
MOTV
4
VCC
5
VSS
NC
FA1210H
FA2200
12
SMIN
6
11
VREG6
FA1210T
FA2200
16
VSS
15
NC
14
VREG6
13
H_INN
12
HB
11
H_INP
VTH
7
10
H_INN
NC
8
9
HB
FG
9
NC
10
8
H_INP
HTSSOP14
TSSOP20
Pin Description
FA1210H
PIN NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
F-GND
FA1210T
PIN Name
PIN NO.
4
5
6
7
8
9
10
11
12
13
14
15
16
17
1,2,3,
18,19,20
MOTV
VCC
SMIN
VTH
NC
FG
NC
H_INP
HB
H_INN
VREG6
NC
VSS
MOTU
F-GND
GND
O
O
I
O
I
O
O
O
Power
I
I
Motor output
Power supply
Minimum speed setting
Voltage reference for thermal control
Not connected
Frequency generator
Not connected
Hall Sensor input, IN+
Hall bias voltage
Hall Sensor input, IN-
LDO 6V output
Not connected
Control signal ground
Motor output
POWER MOS GND
Type
Description
1. VSS: Control signal ground.
2. F-GND: Power ground and thermal dissipation pad, this pin must be connected together with VSS and ground on board.
REV_1.1
2
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FA1210
Truth Table
VTH
Low
High
-
-
H_INN
H
L
H
L
H
L
H_INP
L
H
L
H
L
H
MOTU
H
L
OFF
L
-
-
MOTV
L
H
L
OFF
-
-
FG
OFF
L
OFF
L
L
L
Mode
Rotation-driver
Rotation-regeneration
Lock protection
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable about the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device
reliability. The absolute maximum ratings are stress rating only.
Parameter
Power supply voltage
Output current
Logic input pin withstand voltage
FG output pin withstand voltage
FG output current
Power dissipation
Operating temperature
Storage temperature
Symbol
V
CC
max
I
OUT
max
V
logic
max
V
FG
max
I
FG
max
Pd max
*
Topr
Tstg
Peak current
Condition
Ratings
20
1.5
6.5
20
10
1.1
-40~+90
-55~+150
Unit
V
A
V
V
mA
W
℃
℃
*
Mounted circuit board: 70x70x1.6 mm
3
glass epoxy board
.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fortior does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
V
CC
TA
Parameter
Power supply voltage
Operating Ambient Temperature
Min.
4.5
-40
Typ.
Max.
18
90
Unit
V
℃
REV_1.1
3
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FA1210
Electrical Characteristics
(Unless otherwise specified, Ta = 25℃, V
CC
= 12 V)
Parameter
Power supply current
Output Block
Source
Sink
Source + sink
6V Regulator Block
Regulator voltage
Regulator output current
HB Voltage
HB voltage
Hall input pin
Hall sensor input sensitivity
Analog I/O Section
Analog Input range
Anolog PWM Block
PWM Carrier Frequency
VPWM High Level Voltage
VPWM Low Level Voltage
FG Output Pin
FG output pin low-level voltage
Thermal Protection Circuit
Thermal
protection
operating temperature
Low-Voltage Detection
Low voltage detection voltage
UVLO
3.5
V
1. This current is output of internal LDO. Please do not exceed the maximum value specified.
Symbol
I
CC
Ron (H)
Ron (L)
Ron (H+L)
VREG6
Iv6out
(1)
HB
Condition
Working
I
O
= 0.5A
I
O
= 0.5A
I
O
= 0.5A
Ratings
Min.
-
-
-
-
5.7
Typ.
5
0.7
0.5
1.2
6
Max.
8
1.2
0.8
2
6.3
30
1.25
Unit
mA
Ω
Ω
Ω
V
mA
V
VREG6=6V
I HB=5mA
Zero peak value
(including offset
and hysteresis)
0
VHN
10
20
mV
6.3
25K
3.66
1.8
0.1
28K
3.84
1.89
0.2
V
Hz
V
V
V
VPWM
VPWMH
VPWML
VFG
When I
O
= 5mA
21K
3.48
1.71
-
circuit
TSD
ΔTSD
Design target
Design target
-
-
170
15
-
-
℃
℃
Temperature hysteresis width
REV_1.1
4
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FA1210
Operating and Function Description
1. Speed Control Mode
Duty100%
PWM
DUYT(%)
Minimum output duty
Duty0%
VPWML=VCC X 15%
SMIN
VTH(V)
VPWMH=VCC X 30.5 %
Rotation set to Minimum speed
VTH voltage
SMIN voltage
VPWM
PWM control Variable speed
Full speed
Thermistor
open
VPWMH=
VCC X 30.5%
VPWML=
VCC X 15%
0V
ON
ON Duty
OFF
FG
Note: VPWM is a reference voltage used for internal PWM generation.
When the system needs speed control, the FA1210 can work in full speed mode, variable speed mode or
minimum speed mode.
a. Full Speed Mode
When ambient temperature is over expected value, VTH input voltage may be set to value lower than VPWM low
side voltage using external thermistor, motor fan will then be driven at full speed.
REV_1.1
5
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