Honeywell’s Nanopower Series Magnetoresistive (MR) Sensor ICs are ultra-sensitive devices designed to accommodate a wide range of applications with large air gaps, small magnetic fields and low power requirements. The sensor ICs respond to either a North or South pole applied in a direction parallel to the sensor. They do not require the magnet polarity to be identified, simplifying installation and potentially reducing system cost. These sensor ICs use a very low average current consumption and a push-pull output which does not require a pull-up resistor. The sensor ICs can operate from a supply voltage as low as 1.65 V, promoting energy efficiency.
The Nanopower Series is available in two magnetic sensitivities to accommodate a variety of application needs:
- • SM351LT: For applications requiring ultra high magnetic sensitivity (7 G typical operate, 11 G maximum operate) and a very low current draw (360 nA typical).
- • SM353LT: For applications requiring very high magnetic sensitivity (14 G typical operate, 20 G maximum operate) and a very low current draw (310 nA typical).
Applications
- Industrial
- • Mobile equipment (i.e., handheld computing equipment, scanners)
- • Water, electric and gas utility meters
- • Building access control; reed switch replacement for battery operated security systems
- • Industrial smoke detectors
- Medical
- • Exercise equipment
- • Infusion pumps
- • Drawer position sensing (e.g., medical cabinets)
- • Hospital beds
- White Goods
- • Lid, door and drawer position detection
- • Fluid flow
- Medium-Sized Consumer Electronics
- • Battery-optimization position sensor
Features & Benefits
- • High sensitivity: 7 Gauss typ., 11 Gauss max. (SM351LT); 14 G typ., 20 Gauss max. (SM353LT)
- • Nanopower: Average current of 360 nA typ. (SM351LT) and 310 nA typ. (SM353LT)
- • Supply voltage range: 1.65 Vdc to 5.5 Vdc; simplifies design-in
- • Omnipolar sensing: Activates with either pole from a magnet
- • Temperature range: -40 °C to 85 °C (-40 °F to 185 °F)
- • Push-pull output: Does not require external pull-up resistor
- • Non-chopper stabilized design
- • RoHS-compliant materials: Meets Directive 2002/95/EC
- • Package: SOT-23
Honeywell Nanopower Series Video
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Datasheet
Magnetic Sensor IC Product Line Card
Application Notes
Magnetic Position Sensing in Brushless DC Electric Motors
Magnetoresistive Sensor ICs Nanopower Series
View All Orderable Part Numbers
製品技術仕様
EU RoHS
Compliant
ECCN (US)
EAR99
Part Status
Active
HTS
COMPONENTS
Automotive
Yes
PPAP
Unknown
Magnetic Type
Bipolar Latch
Module/IC Classification
IC
Minimum Magnetic Sensor Release Point (Gs)
-55
Typical Magnetic Sensor Hysteresis (Gs)
60
Maximum Magnetic Sensor Operating Point (Gs)
55
Typical Output Fall Time (us)
1.5(Max)
Maximum Output Current (mA)
20
Minimum Operating Supply Voltage (V)
3
Typical Operating Supply Voltage (V)
3.3|5|9|12|15|18
Maximum Operating Supply Voltage (V)
24
Maximum Supply Current (uA)
8000
Minimum Operating Temperature (°C)
-40
Maximum Operating Temperature (°C)
150
Packaging
Tape and Reel
Mounting
Surface Mount
Package Height
1.2 mm
Package Width
1.6 mm
Package Length
2.9 mm
PCB changed
3
Standard Package Name
SOT
Supplier Package
SOT-23
Pin Count
3
Lead Shape
Gull-wing