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Honeywell International Electronic Components Datasheet

SL353 Datasheet

Micropower Omnipolar Digital Hall-Effect Sensor ICs

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Micropower Omnipolar
Digital Hall-Effect Sensor ICs
DESCRIPTION
The SL353 Series sensor ICs (Integrated Circuits) are small,
versatile, digital Hall-effect devices operated by the magnetic
field from a permanent magnet or an electromagnet. These
sensitive devices are designed to meet a wide range of
potential applications with low power requirements.
The SL353 Series responds to either a North or South pole,
meaning that they do not require the magnet polarity to be
identified, providing an easier installation and potentially
reducing system cost.
These low-power sensing devices use BiCMOS (Bipolar
Complementary Metal Oxide Semiconductor) technology and a
timing circuit that turns the power on for only a short time it is
off for the rest of the period (duty cycle) significantly reducing
the average current consumption.
Both products can operate from a supply voltage as low as
2.2 V, promoting energy efficiency.
VALUE PROPOSITIONS
SL353LT
For device manufacturers who need ultra low power sensing
for battery-operated, mobile applications, Honeywell’s
SL353LT Omnipolar Hall-Effect Sensor IC provides an ultra
low power (1.8 μA, 2.8 Vdc) sensor IC and helps minimize
PCB (Printed Circuit Board) space, part count and cost for
the entire application.
Unlike other low power Hall-effect sensors, the SL353LT offers
ultra low power sensing with significantly lower noise
emissions and the ability to minimize PCB space and cost
for the entire application as demonstrated by a non-chopper
stabilized design, subminiature SOT-23 packaging,
omnipolar sensing, the shortest active mode time and
lowest average current in its class.
The push-pull output does not require a pull-up resistor and
can operate with very low current levels, potentially helping to
reduce cost and minimizing the total current consumption.
The SL353 Series is available in two duty cycle configurations
to accommodate a variety of application needs:
SL353HT: High duty cycle (13% typ.) for applications
requiring high switching speed and a lower current
(0.33 mA typ.) than standard Hall-effect sensor ICs.
SL353LT: Very low duty cycle (0.013% typ.), resulting in
extended battery life in applications requiring extremely low
current drain (1.8 µA typ.) and not requiring a high
switching speed.
The SL353 Series has a typical operating point of ±60 Gauss
at 25 °C [77 °F].
These sensors are available in the subminiature SOT-23
surface mount package on tape and reel (3000 units per reel),
for use in automated pick-and-place component installation.
SL353HT
For device manufacturers who need to optimize the PC
board in energy efficient, “green” products with higher
switching frequency requirements, Honeywell’s SL353HT
Omnipolar Hall-Effect Sensor IC provides a low power sensor
IC that can be used in higher switching frequency
applications.
Unlike standard Hall-Effect sensors, the SL353HT offers the
ability to optimize the PCB in high switching frequency
applications as demonstrated by its low power (0.33 mA,
2.8 Vdc) use, high duty cycle (13% typ.) and subminiature
SOT-23 package size.


Honeywell International Electronic Components Datasheet

SL353 Datasheet

Micropower Omnipolar Digital Hall-Effect Sensor ICs

No Preview Available !

FEATURES AND BENEFITS (= competitive differentiator)
Energy efficient: Supply voltage as low as 2.2 Vdc,
combined with very low average current (1.8 µA typ. for
SL353LT the lowest in its class), reduces power
consumption, provides extended battery life, and promotes
energy efficiency
Push-pull output does not require external pull-up
resistor: Simplifies interface with common electrical circuits
and potentially reduces PC board space and costs to the
customer
Non-chopper stabilized design: Does not utilize chopper
stabilization, eliminating the noise generated by products
using this technique. This means that customers do not
need filters to compensate for the noise, helping to reduce
PC board space, part counts, and costs for the application
Versatile: Omnipolar capability with high and low duty
cycle options allows for use in a variety of potential
applications with low power requirements and/or battery
operation, including motion control, lid closure detection,
presence-absence, metering, and displacement sensing
Stable: Thermally balanced integrated circuit provides for
stable operation over a wide temperature range, from -40°
to 85 °C [-40° to 185 °F]
Subminiature size: The SOT-23 subminiature package
size requires less PCB space, allowing for use in smaller
assemblies
Price competitive: By using BiCMOS technology,
Honeywell has been able to design a reduced size
integrated circuit, saving on manufacturing costs while still
meeting customer requirements; these savings can result in
lower costs to customers
Helps reduce total system cost: Because they can be
operated by a North pole or a South pole, they do not
require the magnet polarity to be identified, thus making the
installation easier and potentially reducing the system cost
Reduces manufacturing costs: SL353 Series is supplied
on tape and reel, often allowing for automated, lower-cost
pick and place assembly which can help the customer
reduce manufacturing costs
Supplied on tape and reel: Allows for a compact design
with automated component placement, helping to reduce
manufacturing costs
Compliant: RoHS-compliant materials meet Directive
2002/95/EC
POTENTIAL APPLICATIONS
Battery-operated, mobile equipment such as:
Door or lid closure detection in computer notebooks,
scanners, hand-held industrial computers and
instrumentation
Mobile printer head position sensing
Small, hand-held medical and dental equipment
Trigger switch for battery-operated hand tools (i.e., drills,
drivers)
Reed switch replacement in battery operated security
systems
Magnetic encoder for building access (array)
Power switch or open-close detection in small battery-
operated appliances (i.e., vacuum cleaners, fans)
Gas or water consumption measurement in remote,
battery-operated utility meters
2 www.honeywell.com/sensing


Part Number SL353
Description Micropower Omnipolar Digital Hall-Effect Sensor ICs
Maker Honeywell
Total Page 6 Pages
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