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What is A1203?

This electronic component, produced by the manufacturer "Allegro MicroSystems", performs the same function as "(A1201 - A1204) Continuous-Time Bipolar Switch Family".


A1203 Datasheet PDF - Allegro MicroSystems

Part Number A1203
Description (A1201 - A1204) Continuous-Time Bipolar Switch Family
Manufacturers Allegro MicroSystems 
Logo Allegro MicroSystems Logo 


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A1201, A1202, A1203, and A1204
Continuous-Time Bipolar Switch Family
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
Packages: 3 pin SOT23W (suffix LH), and
3 pin SIP (suffix UA)
Description
The Allegro® A1201, A1202, A1203, and A1204 Hall-effect
bipolar switches are next-generation replacements and
extension of the popular Allegro A3134, A3133, and A3132
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
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Continued on the next page…
Functional Block Diagram
VCC
A1201-DS, Rev. 5
Regulator
To all subcircuits
Amp
Gain
Offset
Trim
Control
VOUT
GND

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A1203 equivalent
A1201, A1202,
A1203, and A1204
Continuous-Time Bipolar Switch Family
Characteristic Data
Supply Current (On) versus Ambient Temperature
(A1201/02/03/04)
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
–50
VCC (V)
24
3.8
0 50 100 150
TA (°C)
Supply Current (Off) versus Ambient Temperature
(A1201/02/03/04)
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
–50
VCC (V)
24
3.8
0 50 100 150
TA (°C)
Output Voltage (On) versus Ambient Temperature
(A1201/02/03/04)
400
350
300
250 VCC (V)
200 24
3.8
150
100
50
0
–50
0 50 100
TA (°C)
150
Supply Current (On) versus Supply Voltage
(A1201/02/03/04)
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
0
TA (°C)
–40
25
150
5 10 15 20 25
VCC (V)
Supply Current (Off) versus Supply Voltage
(A1201/02/03/04)
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
0
TA (°C)
–40
25
150
5 10 15 20 25
VCC (V)
Output Voltage (On) versus Supply Voltage
(A1201/02/03/04)
400
350
300
250 TA (°C)
–40
200 25
150 150
100
50
0
0 5 10 15 20 25
VCC (V)
Allegro MicroSystems, Inc.
5
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for A1203 electronic component.


Information Total 13 Pages
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Featured Datasheets

Part NumberDescriptionMFRS
A1201The function is (A1201 - A1204) Continuous-Time Bipolar Switch Family. Allegro MicroSystemsAllegro MicroSystems
A1202The function is (A1201 - A1204) Continuous-Time Bipolar Switch Family. Allegro MicroSystemsAllegro MicroSystems
A1203The function is (A1201 - A1204) Continuous-Time Bipolar Switch Family. Allegro MicroSystemsAllegro MicroSystems

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