A1104ELHLT-T Allegro Microsystems Inc, A1104ELHLT-T Datasheet

IC SWITCH HALL EFFECT SOT-23W

A1104ELHLT-T

Manufacturer Part Number
A1104ELHLT-T
Description
IC SWITCH HALL EFFECT SOT-23W
Manufacturer
Allegro Microsystems Inc
Type
Unipolar Switchr
Datasheet

Specifications of A1104ELHLT-T

Sensing Range
450G Trip, 25G Release
Voltage - Supply
3.8 V ~ 24 V
Current - Supply
7.5mA
Current - Output (max)
25mA
Output Type
Digital, Open Collector
Features
Regulated Voltage
Operating Temperature
-40°C ~ 85°C
Package / Case
SOT-23W
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features and Benefits
▪ Continuous-time operation
▪ Stable operation over full operating temperature range
▪ Reverse battery protection
▪ Solid-state reliability
▪ Factory-programmed at end-of-line for optimum
▪ Robust EMC performance
▪ High ESD rating
▪ Regulator stability without a bypass capacitor
Packages: 3 pin SOT23W (suffix LH), and
3 pin SIP (suffix UA)
Not to scale
A1101-DS, Rev. 12
performance
▫ Fast power-on time
▫ Low noise
VCC
Regulator
Functional Block Diagram
A1101, A1102, A1103, A1104, and A1106
Gain
Amp
To all subcircuits
Continuous-Time Switch Family
Control
Trim
Description
The Allegro
are next generation replacements for the popular Allegro
312x and 314x lines of unipolar switches. The A110x family,
produced with BiCMOS technology, consists of devices that
feature fast power-on time and low-noise operation. Device
programming is performed after packaging, to ensure increased
switchpoint accuracy by eliminating offsets that can be induced
by package stress. Unique Hall element geometries and low-
offset amplifiers help to minimize noise and to reduce the
residual offset voltage normally caused by device overmolding,
temperature excursions, and thermal stress.
The A1101-A1104 and A1106 Hall-effect switches include
the following on a single silicon chip: voltage regulator,
Hall-voltage generator, small-signal amplifier, Schmitt
trigger, and NMOS output transistor. The integrated voltage
regulator permits operation from 3.8 to 24 V. The extensive
on-board protection circuitry makes possible a ±30 V absolute
maximum voltage rating for superior protection in automotive
and industrial motor commutation applications, without adding
Continued on the next page…
Offset
®
A1101-A1104 and A1106 Hall-effect switches
GND
VOUT

Related parts for A1104ELHLT-T

A1104ELHLT-T Summary of contents

Page 1

Features and Benefits ▪ Continuous-time operation ▫ Fast power-on time ▫ Low noise ▪ Stable operation over full operating temperature range ▪ Reverse battery protection ▪ Solid-state reliability ▪ Factory-programmed at end-of-line for optimum performance ▪ Robust EMC performance ▪ ...

Page 2

A1101, A1102, A1103, A1104, and A1106 Description (continued) external components. All devices in the family are identical except for magnetic switchpoint levels. The small geometries of the BiCMOS process allow these devices to be provided in ultrasmall packages. The package ...

Page 3

A1101, A1102, A1103, A1104, and A1106 ELECTRICAL OPERATING CHARACTERISTICS over full operating voltage and ambient temperature ranges, unless otherwise noted Characteristic Symbol 1 Supply Voltage V Output Leakage Current I OUTOFF Output On Voltage V OUT(SAT) Power-On Time 2 3 ...

Page 4

A1101, A1102, A1103, A1104, and A1106 MAGNETIC OPERATING CHARACTERISTICS Characteristic Symbol Operate Point B Release Point B Hysteresis B 1 Magnetic flux density indicated as a negative value for north-polarity magnetic fields, and as a positive value for ...

Page 5

A1101, A1102, A1103, A1104, and A1106 Characteristic Package Thermal Resistance Continuous-Time Switch Family Symbol Package LH, 1-layer PCB with copper limited to solder pads Package LH, 2-layer PCB with 0.463 in. R θJA side connected by thermal vias Package UA, ...

Page 6

A1101, A1102, A1103, A1104, and A1106 Supply Current (On) versus Ambient Temperature (A1101/02/03/04/06) 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0 – (°C) A Supply Current (Off) versus Ambient Temperature (A1101/02/03/04/06) 8.0 7.0 6.0 5.0 4.0 ...

Page 7

A1101, A1102, A1103, A1104, and A1106 OPERATION The output of these devices switches low (turns on) when a magnetic field (south polarity) perpendicular to the Hall ele- ment exceeds the operate point threshold, B the output is capable of sinking ...

Page 8

A1101, A1102, A1103, A1104, and A1106 ADDITIONAL APPLICATIONS INFORMATION Extensive applications information for Hall-effect devices is available in: • Hall-Effect IC Applications Guide, Application Note 27701 • Hall-Effect Devices: Gluing, Potting, Encapsulating, Lead Welding and Lead Forming, Application Note 27703.1 ...

Page 9

A1101, A1102, A1103, A1104, and A1106 Power Derating The device must be operated below the maximum junction temperature of the device Under certain combinations of J(max) peak conditions, reliable operation may require derating sup- plied power or improving ...

Page 10

A1101, A1102, A1103, A1104, and A1106 +0.12 2.98 –0.08 3 +0.10 2.90 –0. 10° REF 0.95 BSC For Reference Only; not for tooling use (reference dwg. 802840) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and ...

Page 11

A1101, A1102, A1103, A1104, and A1106 4.09 45° +0.08 3.02 –0.05 2.16 MAX 0.51 REF 1 15.75 ±0.51 +0.05 0.43 –0.07 Copyright ©2006-2009, Allegro MicroSystems, Inc. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such de ...

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