TSH181
General Purpose Hall Effect Latch
TO-92S
Pin Definition:
1. V
DD
2. GND
3. Output
Description
TSH181, Hall-Effect sensor, designed for electronic commutation of brush-less DC motor applications. 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 open collector output. An
internal band gap regulator is used to provide temperature compensated supply voltage for internal circuits and
allows a wide operating supply range. The device is identical except for magnetic switch points. The device
includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper
stabilization, Schmitt trigger, open-collector output to sink up to 25mA. A south pole of sufficient strength will turn
the output on. The North Pole is necessary to turn the output off. An on-board regulator permits operation with
supply voltages of 3.5V to 20 V.
Features
●
●
●
●
●
Temperature compensation.
Wide operating voltage range.
Open-Collector pre-driver.
Reverse bias protection on power supply pin.
o
100% at 125 C “Hot Test”
Ordering Information
Part No.
TSH181CT B0G
Package
TO-92S
Packing
1Kpcs / Bulk Bag
Note:
“G” denote for Halogen Free Product
Application
●
●
●
●
●
High temperature Fan motor
3 phase BLDC motor application
Fan motor application
Speed sensing
Revolution counting
Absolute Maximum Rating
(Ta = 25
o
C unless otherwise noted)
Characteristics
Supply voltage
Output Voltage
Reverse voltage
Magnetic flux density
Output current
Operating Temperature Range
Storage temperature range
Maximum Junction Temp
Thermal Resistance - Junction to Ambient
Thermal Resistance - Junction to Case
Package Power Dissipation
I
OUT
T
OPR
T
STG
T
J
θ
JA
θ
JC
P
D
Limit
V
CC
V
OUT
V
CC/OUT
Value
20
30
-20
Unlimited
25
-40 to +125
-55 to +150
150
206
148
606
Unit
V
V
V
Gauss
mA
o
o
o
o
o
C
C
C
C/W
C/W
mW
Note:
Do not apply reverse voltage to V
CC
and V
OUT
Pin, It may be caused for Miss function or damaged device.
1/7
Version: B13
TSH181
General Purpose Hall Effect Latch
Block Diagram
Typical Application Circuit
C1：1000pF
C2：15pF
R1：10KΩ
Electrical Specifications
(
DC Operating Parameters：T
A
=+25
o
C,V
CC
=12V)
Parameters
Supply Voltage
Supply Current
Output Saturation Voltage
Output Leakage Current
Output Rise Time
Output Fall Time
Operating
B< B
OP
I
OUT
= 10mA, B>B
OP
I
OFF
B<B
RP
, V
OUT
= 12V
R
L
=820Ω, C
L
=20pF
R
L
=820Ω; C
L
=20pF
Test Conditions
Min
3.5
--
--
--
--
--
Typ
--
4
--
--
--
--
Max
20
8
700
10
1.5
1.5
Units
V
mA
mV
uA
uS
uS
2/7
Version: B13
TSH181
General Purpose Hall Effect Latch
Characteristic Performance
Figure 1. Supply Voltage vs. Flux Density
Figure 2. Temperature vs. Flux Density
Figure 3. Supply Voltage vs. Output Voltage
Figure 4. Temperature vs. Output Voltage
Figure 5. Supply Voltage vs. Leakage Current
Figure 6. Power Dissipation vs. Temperature
4/7
Version: B13
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