APS12205 Datasheet, PDF (1/12 Pages) Allegro MicroSystems – High-Temperature Chopper-Stabilized Precision Hall-Effect Latches for 5 V Applications

APS12205, APS12215,
and APS12235
High-Temperature Chopper-Stabilized Precision
Hall-Effect Latches 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
• Symmetrical latch 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 APS12205, APS12215, and APS12235 Hall-effect sensor
ICs are extremely temperature-stable and stress-resistant
devices 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 to sink up to 10 mA. A
south pole of sufficient strength turns the output on; a north
pole of sufficient strength is necessary to turn the output off.
For applications requiring operation from greater than 5.5 V or
operation directly from a battery, refer to the A1220, A1221,
or A1223.
Two package styles provide a choice of through-hole or surface
mounting. Package type LH is a modified 3-pin SOT23W
surface-mount package, while UA is a three-pin ultramini SIP
for through-hole mounting. Both packages are lead (Pb) free,
with 100% matte-tin-plated leadframes.
Functional Block Diagram
VCC
To All Subcircuits
Amp
Low-Pass
Filter
Control
Current Limit
VOUT
GND
APS12205-15-35-DS, Rev. 1