FS276
Technology
2-PHASE DC MOTOR DRIVE IC
GENERAL DESCRIPTION
The FS276, a 1-chip composed of hall sensor and output coil drivers, applied to a 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 up to 0.45A and operating
voltage range is from 2.8V ~ 20V.
Using few external components, FS276, a high performance integrated IC, is designed for a
single-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: 2.8V~20V
˙Output sink current up to 0.45A
˙Very low switching noise.
˙Package : TO-92SP-4
TO-92SP-4
TYPICAL APPLICATION CIRCUIT
FTC
S276
Rev0.2 Aug.15, 2003
P1/FS210
FS276
Technology
FUNCTIONAL BLOCK DIAGRAM
1
Regulator
2
Hall Sensor
Pre-driver
AMP
3
4
MARK VIEW
FTC
S276
1
2
3
4
PIN DESCRIPTION
NAME
NO.
STATUS
DESCRIPTION
VCC
1
P
IC Power Supply
NO
2
O
Coil driver output
It is low state during the N magnetic
field.
SO
3
O
Coil driver output
It is low state during the S magnetic
field.
GND
4
P
IC Ground
Rev0.2 Aug.15, 2003
P2/FS210
FS276
Technology
ABSOLUTE MAXIMUM RATINGS
Zener Breakdown Voltage (Vz) ------------------------------------------------------------
35V
NO/SO Pin Voltage -------------------------------------------------------------------------
30V
VCC Pin Voltage ------------------------------------------------------------------------------
20V
Peak Sink Current (Io)
Hold Current--------------------------------------------------------------------------
700mA
Continuous Current ----------------------------------------------------------------
450mA
Power Dissipation
Ta=25℃ -----------------------------------------------------------------------------
850mW
Ta=85℃ -----------------------------------------------------------------------------
450mW
Thermal Resistance
Θja= -----------------------------------------------------------------------------------
0.15℃/mW
o
Operating Temperature Range ----------------------------------------------------
-20 C∼100 oC
Storage Temperature Range -------------------------------------------------------
-65 oC∼150 oC
Junction Temperature -----------------------------------------------------------------------
+150 oC
Lead Temperature (Soldering, 10 sec) --------------------------------------------------
+230 oC
235 ± 5oC
10 ± 1 sec
150 ± 10oC
90 ± 30 sec
2
2
R O O M TEM P
5oC / sec
5oC / sec
SEC O N D
Soldering C ondition
Rev0.2 Aug.15, 2003
P3/FS210
FS276
Technology
DC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
TEST CONDITIONS
Minimum Operating Voltage
VCC
No use pin is open (Fig1)
Maximum Operating Voltage
VCC
Quiescent Supply current
ICC
NO/SO Saturation Voltage
VSAT
Note:
MIN
Icc＜20mA No use pin is
open (Fig1)
No use pin is open Vcc :
3.0V∼20V (Fig1)
TYP
MAX
UNIT
2.8
V
20.0
V
18
Io = 450mA (Fig1)
20
mA
1.0
V
Fig1 The IC output state is under N magnetic field.
NO/SO Saturation Voltage Vs. Output Current(Io) Vcc=12V, Temp.=25 oC
Output Current (Io), unit:mA
Saturation Voltage Unit:V
200
300
400
500
600
700
0.30
0.47
0.66
0.88
1.09
1.31
Note
AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Rise time
(tr)
RL=100Ω(5w) CL=20pF (Fig1)
10
uS
Fall time
(tƒ)
RL=100Ω(5w) CL=20pF (Fig1)
300
nS
Rev0.2 Aug.15, 2003
P4/FS210
FS276
Technology
MAGNETIC CHARACTERISTICS
Ta=-20℃∼100℃
FS276-A
PARAMETER
MIN
MAX
UNIT
Bop
+10
+65
G
Brp
-65
-10
G
Bhys
20
130
Ta=-20℃∼100℃
FS276-B
PARAMETER
MIN
MAX
UNIT
Bop
+5
+80
G
Brp
-80
-5
G
Bhys
10
160
VNO
VSO
V
-65
( -80
NO
V
+65
,
+80)
PIN
B
-65
( -80
SO
+65
,
B
+80)
PIN
Rev0.2 Aug.15, 2003
P5/FS210
FS276
Technology
TEST CIRCUITS:
FTC
S276
Fig 1
Rev0.2 Aug.15, 2003
P6/FS210
FS276
Technology
45
-10
40
-15
35
-20
BRP-GAUSS
BOP -GAUSS
TYPICAL CHARACTERISTICS
30
25
-30
20
-35
15
-40
10
0
5
10
15
20
25
-45
0
30
5
10
20
Vcc-V
Figure 1
Figure 2
72
45
70
40
68
35
66
64
62
25
30
80
100
80
100
30
25
20
60
15
0
5
10
15
20
25
10
-20
30
Vcc-V
20
-20
70
-25
65
BHYS-GAUSS
75
-30
-35
60
55
-40
50
-45
45
20
40
60
60
Figure 4
-15
-50
-20
40
TEMPERATURE ℃
Figure 3
BRP-GAUSS
15
Vcc-V
BOP-GAUSS
BHYS-GAUSS
-25
80
100
40
-20
20
40
60
TEMPERATURE ℃
TEMP ERATURE ℃
Figure 5
Figure 6
Rev0.2 Aug.15, 2003
P7/FS210
FS276
Technology
FUNCTION DESCRIPTIONS
HALL SENSOR LOCATION
The Fig 2 is the hall sensor location, where marks the IC number. The best sensitivity,
which can be intensified as much as possible, depends on the vertical distance and position
between magnetic pole and the hall sensor (Fig 3). For the single-phase motor, this design
is very important.
X
U N IT
Y
X
1.75
mm
Y
1.35
mm
Fig 2 FS276 Hall Sensor Location
N
S
d
d1:hallsensor to case is 0.52m m
Fig 3 Magnetic Distribution and Z-axis position
Rev0.2 Aug.15, 2003
P8/FS210
FS276
Technology
APPLICATION NOTE
The Example of Typical Application Circuit
Fig 5 is the example of typical application circuit. The red, yellow, and black wires are the
input points of the motor system: red, the input of power supply; yellow, the output of FG;
black, the ground signal. RC is an external pull-up resistance for the use of measuring FG
signal. In view of the design, the value of RC could be decided by the transistor saturation
voltage (VON), sink current (IC), and off-level voltage (VC).
The formula is:
R C=
VC − VON
IC
For example:
VC = +5V for TTL level.
IC = 10mA at 0.2V saturation voltage
The safety value of RC= 470Ω
D1 is the reverse protection diode. As if the red and black wires reversely connect with the
power source, the current will flow through the ground via IC and coils L1 and L2 to power
supply. Under such kind of circumstances, the IC and coils are easy to be burned out.
Therefore, D1, the reverse protection diode, is necessary for the design. However, D1 will
also cause an extra voltage drop on the supply voltage.
C1 is a capacitor to reduce the ripple noise caused during the transient of the output stages.
The volume of the ripple noise depends on the coil impedance and characteristics.
+Vcc
D1
R wire
B wire
C1
L2
VCC
L1
NO
FS276
+Vc
GND
SO
Rc
FG
Output
Y wire
Internal circuit of 2-phase DC motor
Fig 5 Application Circuit
Rev0.2 Aug.15, 2003
P9/FS210
FS276
Technology
PACKAGE OUTLINE
5.22 ±0.05
(0.206 ±0.002)
2-
3d
2-
5d
.
eg
.
4.2±0.1
(0.165±0.04)
1.55 ±0.05
(0.061 ±0.002)
0.73 ±0.03
(0.029 ±0.0012)
3.65±0.05
(0.144±0.002)
2-0.3C
(2-0.012C)
eg
15±0.3
0.457± 0.025
(0.018 ±0.001)
mm
(inch)
1.27± 0.025
(0.05±0.001)
0.381 ±0.025
(0.015 ±0.001)
0.381± 0.013
(0.015± 0.0005 )
Rev0.2 Aug.15, 2003
P10/FS210
FS276
Technology
PACKING SPECIFICATIONS
BAG & BOX DIMENSION
100mm
FTC Logo
200mm
160mm
BAG LABEL
630mm
BOX
LABEL
BAG
190mm
INSIDE BOX
400m m
240m m
650m m
C A R TO N
LA B EL
FTC Logo
C A R TO N
PACKING QUANTITY SPECIFICATIONS
1000 EA/1 BAG
25 BAGS/1 INSIDE BOX
4 INSIDE BOXES/1 CARTON
Rev0.2 Aug.15, 2003
P11/FS210
FS276
Technology
LABEL SPECIFICATIONS
70mm
Device Type : FS276-B
Lot No. : XXXXXXXX (D/C:XX)
Qty : 1,000 EA
Marking Type : INK
36mm
BAG LABEL
102mm
Feeling Technology Corp.
Device Type FS276-B
Lot No.
74mm
Total Qty
XXXXXXXX Date Code
PKG Type
SIP-4L
Marking Type
INK
Packing Date 02/12/2003
OP No.
25,000
3C
022
QC
INSIDE BOX & CARTON LABEL
ORDER INFORMATION
Part Number
FS276-A
Operating Temperature
-20℃~ +100℃
Package
TO-92SP-4
Description
±65G (B)
FS276-B
-20℃~ +100℃
TO-92SP-4
±80G (B)
Rev0.2 Aug.15, 2003
P12/FS210