G177.pdf 데이터시트 (총 5 페이지) - 파일 다운로드 G177 데이타시트 다운로드

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ISSUED DATE :2004/10/07
REVISED DATE :
G177
Single Output Hall Effect Latch IC
Description
The G177 is an integrated Hall effect latched sensor with output pull-high resistor driver designed for electronic commutation of
brushless DC motor applications and contactless switches. The device includes an on-chip Hall voltage generator for magnetic
sensing, a comparator that amplifies the Hall voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and
output driver with pull-high resistor. An internal bandgap regulator is used to provide temperature compensated supply voltage for
internal circuits and allows a wide operating supply range.
If a magnetic flux density larger than threshold Bop, DO is turned on (low). The output state is held until a magnetic flux
density reversal falls below Brp causing DO to be turned off (high).
G177 is rated for operation over temperature range from -20 to 100 and voltage range from 3.5V to 28V. The devices
are available in low cost die forms or rugged 3 pin SIP packages.
Features
* Wide range of supply voltage: 3.5V to 28V.
* Internal bandgap regulator allows temperature compensated operations and a wide operating voltage range.
* High sensitivity with a small magnet.
* TTL and MOS ICs directly drivable by output.
* Build in protection diode for chip reverse power connecting.
Application
1)Brushless DC Motor
2)Brushless DC Fan
3)Position Sensors
4)Rotation Sensors
5)Revolution Counting
6)Speed Measurement
7)Keyboard Switches
8)Microswitches
Package Dimensions
REF.
A
A1
b
b1
Millimeter
Min. Max.
1.245 1.753
0.750REF.
0.330 0.432
0.406 0.508
REF.
D
E
L
e
Millimeter
Min. Max.
3.962
4.216
2.870
3.124
13.60
15.60
1.27 REF.
1/5

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Functional Block Diagrams
VCC
1
REG.
HALL
SENSOR
ISSUED DATE :2004/10/07
REVISED DATE :
VCC
1
27K
3 OUTPUT(DO)
2 Vss
Pin Descriptions
Name
Vcc
Vss
DO
P/I/O Pin# Description
P 1 Positive power supply
P 2 Ground
O 3 Digital output
Absolute Maximum Ratings at Ta = 25
Parameter
Supply Voltage
Symbol
Vcc
VALUE
28V
Reverse Vcc Polarity Voltage
Magnetic flux density
VRCC
B
-28V
Unlimited
Output OFF Voltage
Vce 35
Output ON Current
Operating Temperature Range
Storage Temperature Range
IC Continuous
Ta
Ts
25
-20~100
-65~150
Package Power Dissipation
PD
250
Maximum Junction Temp.
Tj 175
Electrical Characteristics (TA=+25 )
Parameter
SYMBOL
Test Conditions
Min
Supply Voltage
VCC -
3.5
Low output voltage
VOL VCC=16V,Io=12mA,B=130 Gauss
VCC=3.6V,Io=12mA,B=130 Gauss
-
-
High output voltage
Output Leakage Current
Output Short-circuit Current
Supply Current
Output Rise Time
VOH
VCC=16V, Io=-30 A,B=-130 Gauss
VCC=3.6V,Io=-30 A,B=-130 Gauss
14.6
2.2
ICex VCC=16V,Vcc=16V
-
-IOS VCC=16V,Vo=0V,B=-130 Gauss
0.4
ICC VCC=24V,Output Open
-
tr VCC=16V,RL=820 CL=20pf
-
Output Falling Time
tf VCC=16V,RL=820 CL=20pf
-
Typ.
-
-
-
-
-
<0.1
-
5
0.3
0.3
Unit
V
V
V
mA
mW
Max.
28
0.4
0.4
-
-
10
0.9
10
1.5
1.5
Unit
V
V
V
V
V
uA
mA
mA
us
us
2/5

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Test Circuit
16V
ISSUED DATE :2004/10/07
REVISED DATE :
RL
RL=820 Ohm
CL=20 pF
CL
Vout(DO)
Power dissipation VS. Environment Temperature
Ta( ) 25 50 60 70 80 85 90 95 100 105 110 115 125
Pd(mW) 275 262 257 252 242 237 232 227 222 212 202 192 182
P d (m W )
300
P o w e r D is s ip a tio n C u rv e
250
200
150
100
0
25 50 75 100
T a ( °C )
125
Electrical Characteristics Curves
150
Current capacity vs. supply voltage for DO pin
Icc v.s Vcc at Different Temp
3/5