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PDF SS2309 Data sheet ( Hoja de datos )
| Número de pieza | SS2309 | |
| Descripción | Hall Latch - High Sensitivity | |
| Fabricantes | SEC | |
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Hay una vista previa y un enlace de descarga de SS2309 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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Packages
3 pin SOT23 (suffix SO)
3 pin SIP (suffix UA)
SS2309
Hall Latch - High Sensitivity
Features and Benefits
– Wide operating voltage range from 3.5V to
24V
– High magnetic sensitivity – Multi-purpose
– CMOS technology
– Low current consumption
– Chopper-stabilized amplifier stage
– Open drain output
– Superior temperature stability
– Insensitive to physical stress
– SOT23 3L and flat SIP 3L
both RoHS Compliant packages
Functional Block Diagram
VDD
Voltage
Regulator
Chopper
OUT
Application Examples
– Automotive, Consumer and Industrial
– Solid-state switch
– Brushless DC motor commutation
– Speed detection
– Angular position detection
– Linear position detection
– Proximity detection
Hall
Plate
GND
SIP Package
Pin 1 – VDD
Pin 2 – GND
Pin 3 – OUT
SOT Package
Pin 1 – VDD
Pin 2 – OUT
Pin 3 – GND
General Description
The SS2309 is a Hall-effect sensor IC fabricated from
mixed signal CMOS technology. The device inte-
grates a voltage regulator, Hall sensor with dynamic
offset cancellation system, Schmitt trigger and an
open-drain output driver, all in a single package.
It incorporates advanced chopper stabilization techniques to provide accurate and stable magnetic switch points.
There are many applications for this HED - Hall Electronic Device - in addition to those listed above. The design,
specifications and performance have been optimized for commutation applications in 5V and 12V brushless DC
motors.
Thanks to its wide operating voltage range and extended choice of temperature range, it is quite suitable for use in
automotive, industrial and consumer applications.
The device is delivered in a Small Outline Transistor (SOT) for surface mount process or in a Plastic Single In
Line (TO92) for through- hole mount. Both 3-lead packages are RoHS compliant.
1 V3.10 Nov 1, 2013
1 page  
SS2309
Hall Latch - High Sensitivity
The SOT-23 device is reversed from the UA package. The SOT-23 output transistor will be latched on in the pres-
ence of a sufficiently strong North pole magnetic field applied to the marked face.
Application Information
It is strongly recommended that an external bypass capacitor be connected (in close proximity to the Hall sensor)
between the supply (VDD Pin) and ground (GND Pin) of the device to reduce both external noise and noise gener-
ated by the chopper stabilization technique. As is shown in the following two figures, a 0.1μF capacitor is typical.
Typical Three-Wire Application Circuit
C1 VDD
R2
OUT
SS2309
GND
C2
For reverse voltage protection, it is recommended to connect a resistor or a diode in series with the VDD pin.
When using a resistor, three points are important:
- the resistor has to limit the reverse current to 50mA maximum (VCC / R1 ≤ 50mA)
- the resulting device supply voltage VDD has to be higher than VDD min (VDD = VCC – R1*IDD)
- the resistor has to withstand the power dissipated in reverse voltage condition (PD = VCC2/R1)
When using a diode, a reverse current cannot flow and the voltage drop is almost constant (≈0.7V).
Therefore, a 100Ω/0.25W resistor for 5V application and a diode for higher supply voltage are recommended. Both
solutions provide the required reverse voltage protection.
When a weak power supply is used or when the device is intended to be used in noisy environment, it is recom-
mended the following figure is used.
The low-pass filter formed by R1 and C1 and the Zener diode Z1 bypass the disturbances or voltage spikes occur-
ring on the device supply voltage VDD. The diode D1 provides additional reverse voltage protection.
Automotive and Severe Environment Protection Circuit
R1:100
D1
Z1
C1
VDD
SS2309
OUT
GND
R2
C2
The SS2309 have been optimized for commutation applications in 5V and 12V brushless DC motors. The follow-
ing figure in the next page is the typical application circuit for 3 phase brushless DC motors.
5 V3.10 Nov 1, 2013
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet SS2309.PDF ] | |
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