HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : IC200907
Issued Date : 2009.04.03
Revised Date :2009.10.29
Page No. : 1/7
H277
Complementary Output Hall Effect Sensor IC
General Description
H277 is designed to integrate Hall sensor with output driver together on the
same chip. It is suitable for dual coils brush-less DC motors, dual coils brush-less DC fan, speed measurement,
and revolution counting.
It includes a band-gap reference voltage source, a Hall device, an amplifier, a hysteretic controller and an open-
collector output drive capable of sinking up to 300mA current load. An on-chip protection diode is implemented to
prevent reverse power fault.
H277 has a control circuit to prevent “dead angle” from logic race condition in DC Fan. It has excellent
characteristic of temperature compensation. The internal temperature compensated voltage source can let sensor
to get uniform sensitivity in a wide temperature range.
It is rated for operation over temperature rage from -20
o
C to +85
o
C and voltage ranges from 3.0V to 20V.
Features
•
On-chip Hall sensor
•
3.0V to 20V operating voltage
•
Internal Temperature compensation
•
Special design providing logic race condition immunity, shorter switching time, and good switch reliability
•
300mA output sink current
•
Internal on-chip protection diode
•
SIP-4L Package
Applications
•
Dual-coil Brush-less DC Motor
•
Dual-coil Brush-less DC Fan
•
Revolution Counting
•
Speed Measurement
Typical Application Circuit
(Brush-Less DC Fan)
Fig.2 H277 Application Circuit
H277
HSMC Product Specification
HI-SINCERITY
MICROELECTRONICS CORP.
Pin Configuration
Name
VCC
DO
DOB
GND
P/I/O
P
O
O
P
Pin No.
1
2
3
4
Spec. No. : IC200907
Issued Date : 2009.04.03
Revised Date :2009.10.29
Page No. : 2/7
Description
Power Supply Input
Output Pin
Output Pin
Ground
Block Diagram
Vcc
Temperature
Compensation
Voltage
Regulator
Vout1
GND
Hall
Effect
Sensor
Differential
Amplifier
Hysteresis
Control
Output
Driver
Vout2
Logic Control
GND
Fig.3 Functional Block Diagram of H277
Absolute Maximum Ratings
(Ta=25
o
C)
Characteristics
Supply Voltage
Output breakdown Voltage
Magnetic Flux Density
Output Zener Breakdown
Output ON Current (continuous)
Maximum Output Current
Operating Temperature Range
Storage Temperature Range
Package Power Dissipation
Maximum Junction Temperature
Symbol
V
CC
V
OUT(breakdown)
B
V
Z
I
C
I
CMAX
T
A
T
Stg
P
D
T
J
Values
20
35
Unlimited
28
300
1
-20 to +85
-65 to +150
500
150
Unit
V
V
Gauss
V
mA
A
℃
℃
mW
℃
H277
HSMC Product Specification
HI-SINCERITY
MICROELECTRONICS CORP.
Electrical Characteristics
(T=+25℃, V
CC
=3V~20V)
Characteristic
Supply Voltage
Output Saturation Voltage
Output Leakage Current
Supply Current
Output Rise Time
Output Falling Time
Spec. No. : IC200907
Issued Date : 2009.04.03
Revised Date :2009.10.29
Page No. : 3/7
Symbol
V
CC
V
CE(sat)
Icex
Iccq
Tr
Tf
Test Conditions
V
CC
=3V, I
L
=100mA
V
CC
=14V, I
L
=300mA
Vce=14V, V
CC
=14V
V
CC
=20V, Output Open
V
CC
=14V, R
L
=400Ω, C
L
=20pF
V
CC
=14V, R
L
=400Ω, C
L
=20pF
Min.
3
-
-
-
-
-
-
Typ.
-
200
300
-
14
1
0.2
Max.
20
-
600
2
20
5
1.2
Unit
V
mV
uA
mA
uS
uS
Magnetic Characteristics
Characteristic
H277A
Operate Point
Release Point
H277B
Operate Point
Release Point
Operate Point
Release Point
Operate Point
Release Point
Symbol
B
op
B
rp
B
op
B
rp
B
op
B
rp
B
op
B
rp
Min.
-
-50
-
-70
-
-90
-
-130
Max.
50
-
70
-
90
-
130
-
Unit
Gauss
Gauss
Gauss
Gauss
Gauss
Gauss
Gauss
Gauss
Grade
A
B
H277C
C
H277D
D
Fig.4 V
DO
vs. Magnetic Flux Density
Fig.5 V
DOB
vs. Magnetic Flux Density
H277
HSMC Product Specification
HI-SINCERITY
MICROELECTRONICS CORP.
Characteristics Curve
Spec. No. : IC200907
Issued Date : 2009.04.03
Revised Date :2009.10.29
Page No. : 4/7
Supply Current & Temperature
13.4
13.3
13.2
Supply Current (mA)
..
.
13.1
13
12.9
12.8
12.7
12.6
12.5
12.4
0
Test Conditions:
V
CC
=20V
Output Open, R
L
=∞
(Refer to Test Circuit)
20
40
60
Temperature ( C)
o
80
100
120
Fig.6 I
CC
vs. V
CC
Output Saturation Voltage & Loading Current
1600
1400
80
70
60
Fig.7 I
CC
vs. T
A
Hysteresis & Temperature
Output Saturation Voltage (mV)
..
.
1200
1000
800
600
400
200
0
300
400
500
600
700
800
900
1000
Hysteresis (G)
Test Conditions:
V
CC
=14V, T
A
=25
o
C
I
L
=300mA~1200mA
50
40
30
20
10
0
0
Test Conditions:
V
CC
=14V, R
L
=400Ω
C
L
=20pF
(Refer to Test Circuit)
20
40
60
Loading Current (mA)
Temperature ( C)
o
80
100
120
Fig.8 V
sat
vs. I
C
SIP-4L Power Dissipation & Temperature
600
550
Fig.9 Bhys vs. T
A
Power Dissipation (mW)
500
450
400
350
300
250
200
0
20
40
60
Temperature ( C)
o
80
100
120
Fig.10 P
D
vs. T
A
H277
HSMC Product Specification
HI-SINCERITY
MICROELECTRONICS CORP.
Brush-less DC Fan Output Current Curve
Icoil 1
180
Spec. No. : IC200907
Issued Date : 2009.04.03
Revised Date :2009.10.29
Page No. : 5/7
Current (mA)
90
12V, 0.24A Brush-Less DC Fan
(Refer to Typical Application Circuit)
Test Conditions:
V
CC
=12V, C
1
=C
2
=2.2uF
R
coil1
=R
coil2
=40ohm
0
Icoil 2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Time (uS)
Fig.11 DC FAN Output Curve
Brush-less DC Fan Output Voltage Curve
20
18
16
12V, 0.24A Brush-Less DC Fan
(Refer to Typical Application Circuit)
Output Voltage (V)
14
12
10
8
6
4
2
0
0
2
Test Conditions:
V
CC
=12V, C
1
=C
2
=2.2uF
R
coil1
=R
coil2
=40ohm
Vout 1
Vout 2
4
6
8
10
12
14
16
18
20
Time (mS)
Fig.12 DC FAN Output Curve
Test Circuit
Fig.13 Test Circuit
H277
HSMC Product Specification
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