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A3280LUA 其他数据使用手册 - Allegro MicroSystems（急速微电子）
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地磁传感器
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A3280LUA数据手册
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The A3280--, A3281--, and A3283-- Hall-effect latches are ex treme ly
temperature-stable and stress-resistant sensors especially suited for op-
eration over extended temperature ranges to +150°C. Superior high-tem-
perature per for mance is made possible through dynamic offset cancella-
tion, which reduces the residual offset voltage normally caused by device
overmolding, temperature dependencies, and thermal stress. The three
devices are iden ti cal except for mag net ic switch points.
Each device includes on a single silicon chip a voltage regulator,
Hall-voltage generator, small-signal amplifier, chopper sta bi li za tion,
Schmitt trigger, and a short-circuit protected open-collector output to
sink up to 25 mA. A south pole of sufficient strength will turn the output
on. A north pole is necessary to turn the output off. An on-board regula-
tor permits operation with supply voltages of 4.2 to 24 volts.
Three package styles provide a magnetically op ti mized pack age for
most ap pli ca tions. Package type LH is a modified SOT23W surface-
mount package, LT is a miniature SOT89/TO-243AA transistor package
for surface-mount applications; while UA is a three-lead ultra-mini-SIP
for through-hole mounting. Each package type is also available in a lead
(Pb) free version (suffix, –T) , with a 100% matte tin plated leadframe.
Data Sheet
27609.20e
FEATURES
■ Symmetrical Switch Points
■ Resistant to Physical Stress
■ Superior Temperature Stability
■ Output Short-Circuit Protection
■ Operation From Unregulated Supply
■ Reverse Battery Protection
■ Sol id-State Reliability
■ Small Size
3280, 3281,
AND
3283
ABSOLUTE MAXIMUM RATINGS
at T
A
= +25°C
Supply Voltage, V
CC
.......................... 26.5 V
Reverse Battery Voltage, V
RCC
.......... -30 V
Magnetic Flux Density, B ............ Unlimited
Output Off Voltage, V
OUT
.................... 26 V
Continuous Output Current,
I
OUT
......................................... 25 mA*
Reverse Output Current, I
OUT
......... -50 mA
Package Power Dissipation, P
D
See Graph
Junction Temperature, T
J
................ +165°C
Operating Temperature Range, T
A
Range ‘E’ ..................... -40°C to +85°C
Range ‘L’ .................... -40°C to +150°C
Storage Temperature Range,
T
S
.............................. -65°C to +170°C
*Internal current limiting is intended to protect
the device from output short circuits.
Pinning is shown viewed from branded side.
CHOPPER-STABILIZED, PRECISION
HALL-EF FECT LATCHES
Suffix '–LT' & '–UA' Pinning
(SOT89/TO-243AA & ultra-mini SIP)
Dwg. PH-003-2
1
SUPPLY
V
CC
GROUND
32
OUTPUT
X
PTCT
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