A1202 Datasheet | Continuous-Time Bipolar Switch Family





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Part Number A1202
Description Continuous-Time Bipolar Switch Family
Manufacture Allegro
Total Page 14 Pages
PDF Download Download A1202 PDF File

Features: A1202 and A1203 Continuous-Time Bipolar Switch Family FEATURES AND BENEFITS AEC-Q100 automotive qualified • C ontinuous-time operation □□Fast pow er-on time □□Low noise • Stable operation over full operating temperatu re range • Reverse-battery protectio n • Solid-state reliability • Fac tory-programmed at end-of-line for opti mum performance • Robust EMC perform ance • High ESD rating • Regulato r stability without a bypass capacitor PACKAGES: Not to scale 3-pin SOT23W (s uffix LH) NOT FOR NEW DESIGN 3-pin SI P, matrix HD style (suffix UA) 3-pin S IP, chopper style (suffix UA) DESCRIPT ION The Allegro™ A1202 and A1203 Hall -effect bipolar switches are next-gener ation replacements and extension of the popular Allegro A3133 andA3132 bipolar switch product line. Overall, theA120x family, produced with BiCMOS technolog y, consists of continuous-time devices that feature fast power-on time and low -noise operation. Device programming is performed after packaging, to ensure increased swit.

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A1202 and A1203
Continuous-Time Bipolar Switch Family
FEATURES AND BENEFITS
• AEC-Q100 automotive qualified
• 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
PACKAGES:
Not to scale
3-pin SOT23W
(suffix LH)
NOT FOR
NEW DESIGN
3-pin SIP,
matrix HD style
(suffix UA)
3-pin SIP,
chopper style
(suffix UA)
DESCRIPTION
The AllegroA1202 and A1203 Hall-effect bipolar switches
are next-generation replacements and extension of the popular
Allegro A3133 andA3132 bipolar switch product line. Overall,
theA120x family, produced with BiCMOS technology, consists
of continuous-time 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.
TheA120x Hall-effect bipolar 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 motor commutation
applications, without adding external components.All devices
in the family are identical, except for magnetic switchpoints.
The small geometries of the BiCMOS process allow these
devices to be provided in ultrasmall packages. The package
styles available provide magnetically optimized solutions for
most applications. Package LH is a SOT23W, a miniature low-
profile surface-mount package, while package UAis a three-lead
ultramini SIP for through-hole mounting. Each package is lead
(Pb) free, with 100% matte-tin-plated leadframes.
VCC
A1202-DS, Rev. 23
MCO-0000372
Regulator
To all subcircuits
Amp
VOUT
Gain
Offset
Trim
Control
Functional Block Diagram
GND
July 2, 2019

                    
                    






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