A1102 Allegro Micro Systems, Inc., A1102 Datasheet

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A1102

Manufacturer Part Number
A1102
Description
Continuous-Time Switch Family
Manufacturer
Allegro Micro Systems, Inc.
Datasheet

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A1101-DS
Supply Voltage, V
Reverse-Supply Voltage, V
Output Off Voltage, V
Reverse-Output Voltage, V
Output Current, I
Magnetic Flux Density, B .........................Unlimited
Operating Temperature
Storage Temperature, T
Ambient, T
Ambient, T
Maximum Junction, T
AB SO LUTE MAX I MUM RAT INGS
Package LH, 3-pin Surface Mount
1
1
Package UA, 3-pin SIP
A1101, A1102, A1103, A1104, and A1106
2
3
A
A
, Range E.................. –40ºC to 85ºC
, Range L................ –40ºC to 150ºC
OUTSINK
CC
.......................................... 30 V
2
3
OUT
S
.................. –65ºC to 170ºC
............................... 25 mA
J(max)
.................................. 30 V
ROUT
RCC
........................ –30 V
........................165ºC
..................... –0.5 V
1
2
1 2
3
3
The Allegro
replacements for the popular Allegro 312x and 314x lines of bipolar switches.
The A110x family, produced with BiCMOS technology, consists of devices that
feature fast power-on time and low-noise operation. Device programming is per-
formed 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 volt-
age 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 ampli-
fier, 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
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 pro-
vided in ultrasmall packages. The package styles available provide magnetically
optimized solutions for most applications. Package LH is an SOT23W, a miniature
low-profile surface-mount package, while package UA is a three-lead ultramini
SIP for through-hole mounting. Each package is lead (Pb) free, with 100% matte
tin plated leadframes.
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
High ESD rating
Regulator stability without a bypass capacitor
®
A1101-A1104 and A1106 Hall-effect switches are next generation
Continuous-Time Switch Family
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com

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A1102 Summary of contents

Page 1

... A1101, A1102, A1103, A1104, and A1106 Package LH, 3-pin Surface Mount Package UA, 3-pin SIP LUTE MAX I MUM RAT INGS Supply Voltage, V .......................................... Reverse-Supply Voltage, V ........................ –30 V RCC Output Off Voltage, V .................................. 30 V OUT Reverse-Output Voltage, V ..................... –0.5 V ROUT Output Current, I ...

Page 2

... A1101, A1102, A1103, A1104, and A1106 Part Number Packing* A1101ELHLT-T 7-in. reel, 3000 pieces/reel A1101EUA-T Bulk, 500 pieces/bag A1101LLHLT-T 7-in. reel, 3000 pieces/reel A1101LUA-T Bulk, 500 pieces/bag A1102ELHLT-T 7-in. reel, 3000 pieces/reel A1102EUA-T Bulk, 500 pieces/bag A1102LLHLT-T 7-in. reel, 3000 pieces/reel A1102LUA-T Bulk, 500 pieces/bag A1103ELHLT-T 7-in ...

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 Output Leakage Current I OUTOFF Output On Voltage V OUT(SAT) Power-On Time 2 Output Rise Time 3 3 Output Fall Time I Supply Current ...

Page 4

... A1101, A1102, A1103, A1104, and A1106 MAGNETIC OPERATING CHARACTERISTICS Characteristic Symbol Operate Point Release Point Hysteresis 1 Magnetic flux density indicated as a negative value for north-polarity magnetic fields, and as a positive value for south-polarity magnetic fields. This so-called algebraic convention supports arithmetic comparison of north and south polarity values, where the relative strength of the field is indicated by the absolute value of B, and the sign indicates the polarity of the field (for example, a – ...

Page 5

... A1101, A1102, A1103, A1104, and A1106 THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance A1101-DS Continuous-Time Switch Family Symbol Package LH, minimum-K PCB (single layer, single-sided with copper limited to solder pads) Package LH, low-K PCB (single layer, double-sided with R θ ...

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 3.0 2.0 1.0 0 – (°C) A Output Voltage (On) versus Ambient Temperature (A1101/02/03/04/06) 400 350 300 250 200 150 100 50 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 sen- sor exceeds the operate point threshold, B output is capable of sinking 25 mA and the output voltage When the magnetic field is reduced below the release ...

Page 8

... A1101, A1102, A1103, A1104, and A1106 ADDITIONAL APPLICATIONS INFORMATION Extensive applications information for Hall-effect sensors 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 • Soldering Methods for Allegro’s Products – SMT and Through- ...

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 the heat dissipation properties of the application. This section presents a procedure for correlating factors affecting operating T ...

Page 10

... A1101, A1102, A1103, A1104, and A1106 A1101-DS Continuous-Time Switch Family Package LH, 3-Pin (SOT-23W) Package UA, 3-Pin 10 Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com ...

Page 11

... A1101, A1102, A1103, A1104, and A1106 A1101-DS Continuous-Time Switch Family The products described herein are manufactured under one or more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283; 5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to ...

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