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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.
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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
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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
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ISSUED DATE :2004/10/07
REVISED DATE :
Magnetic Characteristics
Characteristic
Symbol
Operate Point
Release Point
Hysteresis
BIN A
BIN B
BIN C
BIN A
BIN B
BIN C
BIN A
BIN B
BIN C
Bop
Bop
Bop
Brp
Brp
Brp
Bhys
Bhys
Bhys
Ta=+25
Min Max
0 70
- 100
- 130
-70 0
-100
-130
40
50
-
-
110
150
60 160
Ta=-0 to +70
Min Max
0 70
- 100
- 130
-70 0
-100
-130
20
30
-
-
140
200
40 220
Unit
Gauss
Gauss
Gauss
Gauss
Gauss
Gauss
Gauss
Gauss
Gauss
Hysteresis Characteristics
Bin A
DO
OFF
RP
12 OP
10
8
6
4
2 ON
-200 -100 0
100 200
Magnetic Flux Density in Gauss
Bin B
DO
OFF
RP
12 OP
10
8
6
4
2 ON
-200 -100 0
100 200
Magnetic Flux Density in Gauss
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Bin C
DO
OFF 12 OP
10
8
6
4
RP 2 ON
-200 -100 0
100 200
Magnetic Flux Density in Gauss
ISSUED DATE :2004/10/07
REVISED DATE :
Package Information
Active Area Depth
0.51mm
NOM
Package Sensor Location
Max:2.13mm
Min:1.87mm
Max:1.53mm
Min:1.27mm
BRANDED
SURFACE
12 3
Important Notice:
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of GTM.
GTM reserves the right to make changes to its products without notice.
GTM semiconductor products are not warranted to be suitable for use in life-support Applications, or systems.
GTM assumes no liability for any consequence of customer product design, infringement of patents, or application assistance.
Head Office And Factory:
Taiwan: No. 17-1 Tatung Rd. Fu Kou Hsin-Chu Industrial Park, Hsin-Chu, Taiwan, R. O. C.
TEL : 886-3-597-7061 FAX : 886-3-597-9220, 597-0785
China: (201203) No.255, Jang-Jiang Tsai-Lueng RD. , Pu-Dung-Hsin District, Shang-Hai City, China
TEL : 86-21-5895-7671 ~ 4 FAX : 86-21-38950165
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