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UNISONIC TECHNOLOGIES CO., LTD
H1277
LINEAR INTEGRATED CIRCUIT
HIGH SENSITIVITY HALL
EFFECT SENSOR IC WITH FG
OUTPUT
DESCRIPTION
The UTC H1277 is a semiconducting integrated Hall Effect Sensor
IC.
It is just like all the hall sensitive Hall Effect Sensors designed to
work in the situations which the accurate track is extremely small and
the changes in magnetic flux density-changes are generally too small to
be operated.
Besides those features shared in all Hall Effect Sensors, H1277 can
apply to various kinds of applications, such as contact-less switches,
motion detectors, gear tooth sensors, proximity detectors, and electric
communication of DC brushless motors, etc.
FEATURES
* Hall Sensor On-Chip
* Output Zener Diodes to Clamp the Peak Output Voltage
* Frequency Generation Output
* High Output Sinking Capability (nearly to 400mA)
* High Sensitivity Hall Effect Sensor IC: ±65G
ORDERING INFORMATION
Ordering Number
H1277G-G04-K
Package
SIP-4
Packing
Bulk
MARKING
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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H1277
LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION
PIN NO.
1
2
3
4
PIN NAME
FG
DO
DOB
GND
DESCRIPTION
Open collector pin: for rotation frequency detection
Coil output or power input
Coil output or Power input
IC ground
BLOCK DIAGRAM
SENSOR LOCATIONS
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H1277
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA=25°С, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNITS
Supply Voltage (DO/DOB Voltage)
FG Pin Off Voltage
VCC
VOFF
25 V
25 V
FG Sink Current
Output Current
IFG 10 mA
IOUT 500 mA
Power Dissipation
Junction Temperature
PD 500 mW
TJ
-20 ~ +150
°С
Storage Temperature
TSTG
-65 ~ +150
°С
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
RECOMMENDED OPERATING CONDITIONS (TA=25°С, unless otherwise specified)
PARAMETER
Supply voltage (DO/DOB Voltage)
Maximum FG Pin Off Voltage
Maximum Output Sink Current
Maximum FG Sink Current
Junction Temperature
Operating Temperature
SYMBOL
VCC
VOFF
IOUT
IFG
TJ
TOPR
RATINGS
3.7~20
20
400
5
-20~ +125
-20 ~ +85
UNITS
V
V
mA
mA
°С
°С
ELECTRICAL CHARACTERISTICS (TA=25°С,VCC=12V, unless otherwise specified)
PARAMETER
Output Saturation Voltage
Supply Current
FG OFF Leakage Current
FG ON Saturation Voltage
Clamp Output Voltage
Output Rise Time
Output Fall Time
Propagation Delay Time
SYMBOL
VO(SAT)
ICC
IOFF
VON
VCLAMP
tR
tF
tD
TESE CONDITIONS
IOUT = 400mA
IFG = 5mA
RL = 200, CL = 10pF
MIN TYP MAX UNITS
700 900 mV
11 25 mA
1 μA
0.2 0.4
V
33 V
0.4 μS
0.1 μS
2 μS
MAGNETIC CHARACTERISTICS (TA=25°С, VCC=12V unless otherwise specified)
A grade
PARAMETR
Operate Point
Release Point
Hysteresis
SYMBOL
MIN
TYP
MAX
UNIT
BOP 60 G
BRP -60 G
BHYS
120 G
B grade
PARAMETR
Operate Point
Release Point
Hysteresis
SYMBOL
MIN
TYP
MAX
UNIT
BOP 90 G
BRP -90 G
BHYS
180 G
C grade
PARAMETR
Operate Point
Release Point
Hysteresis
SYMBOL
MIN
TYP
MAX
UNIT
BOP 110 G
BRP
-110
G
BHYS
220 G
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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H1277
APPLICATION CIRCUIT
VFG
UTC H1277
LINEAR INTEGRATED CIRCUIT
VDD
+B
-B
L1 L2
TEST CIRCUIT
V2
UTC H1277
+B
-B
V1
IFG A IOFF
VON V
A ICC
V
VCC
Measure VCC,ICC when DO is off. Measure VON,IFG when FG is on. Measure IOFF when FG is off.
UNISONIC TECHNOLOGIES CO., LTD
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H1277
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUITS (TA = 25°С, VCC =12V unless otherwise noted)
Output Current vs.
Output Saturation Voltage
400
350
300
250
200
150
100
50
0 0.15 0.3 0.45 0.6 0.75
Output Saturation Voltage,VO(SAT) (V)
FG Sink Current vs.
FG On Saturation Voltage
5
4
3
2
1
0 0 0.05 0.10 0.15
FG On Saturation Voltage,VON (V)
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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