APS11205 Datasheet, PDF (1/13 Pages) Allegro MicroSystems – High-Temperature Chopper-Stabilized PrecisionHall-Effect Switch for 5 V Applications

APS11205
High-Temperature Chopper-Stabilized Precision
Hall-Effect Switch for 5 V Applications
FEATURES AND BENEFITS
• Optimized for applications with regulated power rails
□□ Operation from 2.8 to 5.5 V
• AEC-Q100 automotive qualified
• Operation up to 175°C junction temperature
• Dynamic offset cancellation
□□ Resistant to physical stress
□□ Superior temperature stability
• Unipolar switchpoints
• Output short-circuit protection
• Solid-state reliability
• Industry-standard packages and pinouts
PACKAGES:
Not to scale
3-pin SOT23W
(suffix LH)
3-pin SIP (suffix UA)
DESCRIPTION
The APS11205 Hall-effect sensor IC is an extremely
temperature-stable and stress-resistant device, especially suited
for operation over extended junction temperature ranges up
to 175°C. Superior high-temperature performance is made
possible through dynamic offset cancellation, which reduces the
residual offset voltage normally caused by device overmolding,
temperature dependencies, and thermal stress.
The single silicon chip includes: a Hall plate, small signal
amplifier, chopper stabilization, Schmitt trigger, and a short-
circuit-protected open-drain output. A south pole of sufficient
strength turns the output on. Removal of the magnetic field
turns the output off. For applications requiring operation from
greater than 5.5 V, or operation directly from a battery, refer
to the A1120.
Two package styles provide a choice of through-hole or surface
mounting. Package type LH is a modified SOT23W, surface-
mount package, while UA is a three-lead ultra-mini SIP for
through-hole mounting. Both packages are lead (Pb) free and
RoHs compliant with 100% matte-tin leadframe plating.
Functional Block Diagram
VCC
Amp
Low-Pass
Filter
To All Subcircuits
Control
Current Limit
VOUT
GND
APS11205-DS