ISSUED DATE :2004/10/07
REVISED DATE :
G177
Description
Single Output Hall Effect Latch IC
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.
1.245
Max.
1.753
REF.
D
E
L
e
Millimeter
Min.
3.962
2.870
13.60
Max.
4.216
3.124
15.60
0.750REF.
0.330
0.406
0.432
0.508
1.27 REF.
1/5
GTM [ GTM CORPORATION ]
