Technology
GENERAL DESCRIPTION
FS211F
2 PHASE DC MOTOR DRIVE IC
The FS211F, a 1-chip composed of hall sensor and output coil drivers, applied to 2-phase DC
motor. The high sensitivity of Hall effect sensor is suitable for motors from mini-type CPU
coolers to blowers and DC fans. Typical operation current is 0.4A and operating voltage range is
wide. FG signal, an open collector, provides a square waveform output for the detection of the
motor speed.
Using few external components, FS211F, a high performance integrated IC, is designed for a
2-phase DC motor circuit. The circuit diagram of the typical application example is as below.
FEATURES
˙1
chip hall sensor/drivers
˙Wide
operating voltage range: 4.0V~20V
˙Output
sink current up to 0.4A
˙Low
quiescent supply current under 5mA
˙Built-in
FG output
˙Package:
TO-92SP-4
TO-92SP-4
TYPICAL APPLICATION CIRCUIT
VCC
R1
FTC
S211
F
R2
C1
R3
C2
FG output
C1,C2,R2,R3 is optional for reduce electromagnetism noise. R2,R3 must greater than 50 ohm
Rev0.7 May. 29, 2009(LF)
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FS211F
Technology
FUNCTIONAL BLOCK DIAGRAM
FS211F
Regulator
2
Hall Sensor
Pre-driver
AMP
3
4
1
MARK VIEW
PIN DESCRIPTION
NAME
FG
NO. STATUS
1
O
DESCRIPTION
Rotation speed output (O.C.)
Coil driver output
It is low state during the N
magnetic field. / Power input
Coil driver output
It is low state during the S
magnetic field. / Power input
IC Ground
FTC
S211
.
F
NO
2
O/P
SO
3
O/P
GND
4
P
1
2
3
4
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FS211F
Technology
ABSOLUTE MAXIMUM RATINGS
FS211F
35V
Zener Breakdown Voltage (Vz) ---------------------------------------------------------------------
NO/SO Pin Voltage (V
CP
(Note 1)) ----------------------------------------------------------------- 30V
Peak Sink Current (Io)
Hold Current--------------------------------------------------------------------------------------
Continuous Current -----------------------------------------------------------------------------
550mA
400mA
Peak Reverse Current (I
R
) ------------------------------------------------------------------------------- 100mA
FG Pin OFF Voltage (V
FG
) ------------------------------------------------------------------------------ 30V
FG Sink Current (I
FG
) -------------------------------------------------------------------------------------- 10mA
Power Dissipation
Ta=25
o
C ----------------------------------------------------------------------------------------------- 600mW
Ta=70 C ---------------------------------------------------------------------------------------------- 450mW
Operating Temperature Range -------------------------------------------------------
-20 C½+90 C
+150
o
C
o
o
o
Storage Temperature Range -------------------------------------------------------------- -65
o
C½+150
o
C
Junction Temperature --------------------------------------------------------------------------
Lead Temperature (Soldering, 10 sec) ------------------------------------------------------------- +260
o
C
Note 1: V
CP
mean Coil Power
255 ± 5
o
C
10 ± 1 sec
ROOM TEMP
150 ± 10
o
C
90 ± 30 sec
2 ~ 5
o
C / sec
2 ~ 5
o
C / sec
SECOND
Soldering Condition
Rev0.7 May. 29, 2009(LF)
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FS211F
Technology
DC ELECTRICAL CHARACTERISTICS
PARAMETER
Minimum Operating Voltage
MaximumOperating Voltage
Quiescent Supply current
NO/SO Saturation Voltage
FG OFF Leakage Current
FG ON Saturation Voltage
SYMBOL
V
CP
V
CP
I
CP
V
SAT
I
OFF
V
ON
TEST CONDITIONS
No use pin is open (Fig1)
I
CP
10mA No use pin is
open (Fig1)
No use pin is open V
CP
:
4.0V 20V (Fig1)
Io = 300mA (Fig1)
(Fig2)
I
C
=5mA(Fig2)
FS211F
MIN TYP MAX UNIT
4.0
20.0
2.0
7.0
1.5
1
0.2
0.5
V
V
mA
V
μA
V
Note: Fig1 The IC output state is under N magnetic field.
AC ELECTRICAL CHARACTERISTICS
PARAMETER
Rise time
Fall time
SYMBOL
(t
r
)
(t
ƒ
)
TEST CONDITIONS
RL=1K CL=10pF (Fig3)
RL=1K CL=10pF (Fig3)
MIN TYP MAX UNIT
500
500
nS
nS
Rev0.7 May. 29, 2009(LF)
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FS211F
Technology
MAGNETIC CHARACTERISTICS
FS211F_LF-A
PARAMETER
Bop
Brp
Bhys
Ta=-20
o
C½+90
o
C
MIN
TYP
+90
-90
MIN
Ta=-20
o
C½+90
o
C
TYP
+60
-60
FS211F
MAX
UNIT
G
G
120
G
FS211F_LF-B
PARAMETER
Bop
Brp
Bhys
MAX
UNIT
G
G
120
Ta=-20
o
C½+90
o
C
MIN
TYP
+110
-110
120
MAX
G
FS211F_LF-C1
PARAMETER
Bop
Brp
Bhys
UNIT
G
G
G
FS211 HYSTERESIS CHARACTERISTICS
V
NO
V
V
SO
V
-60
( -90
NO
,
+60
+90 )
PIN
B
-60
( -90
SO
,
+60
+90 )
PIN
B
Rev0.7 May. 29, 2009(LF)
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FS211F
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