A1202EUA-T Allegro Microsystems Inc, A1202EUA-T Datasheet

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A1202EUA-T

Manufacturer Part Number
A1202EUA-T
Description
IC SW CONTINUE TIME BIPO 3-SIP
Manufacturer
Allegro Microsystems Inc
Type
Bipolar Latchr
Datasheet

Specifications of A1202EUA-T

Sensing Range
75G Trip, -75G Release
Voltage - Supply
3.8 V ~ 24 V
Current - Supply
7.5mA
Current - Output (max)
25mA
Output Type
Digital, Open Drain
Features
Regulated Voltage
Operating Temperature
-40°C ~ 85°C
Package / Case
3-SIP
Magnetic Type
Bipolar
Operating Supply Voltage (min)
3.8V
Operating Supply Voltage (typ)
5/9/12/15/18V
Operating Supply Voltage (max)
24V
Output Current
25mA
Mag Sensor Operate Point (g)
75Gs
Mag Sensor Release Point (g)
-75Gs
Mag Sensor Hysteresis(g)
52Gs
Package Type
Ultra Mini SIP
Pin Count
3
Mounting
Through Hole
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
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
A1202-DS, Rev. 16
performance
▫ Fast power-on time
▫ Low noise
VCC
Continuous-Time Bipolar Switch Family
Regulator
Functional Block Diagram
Gain
Amp
To all subcircuits
Control
Trim
Description
The Allegro
are next-generation replacements and extension of the popular
Allegro A3133 and A3132 bipolar switch product line. Overall,
the A120x 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.
The A120x 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
Continued on the next page…
Offset
®
A1202 and A1203 Hall-effect bipolar switches
GND
A1202 and A1203
VOUT

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A1202EUA-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

A1202 and A1203 Description (continued) 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 ...

Page 3

A1202 and A1203 Package Terminal List Name VCC Connects power supply to chip VOUT Output from circuit GND Ground Continuous-Time Bipolar Switch Family Pin-out Diagrams 2 Description Package Number Package LH Package UA ...

Page 4

A1202 and A1203 OPERATING CHARACTERISTICS over full operating voltage and ambient temperature ranges, unless otherwise noted Characteristic Symbol Electrical Characteristics 1 Supply Voltage V Output Leakage Current I OUTOFF Output On Voltage V OUT(SAT) Power-On Time 2 Output Rise Time ...

Page 5

A1202 and A1203 THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance Continuous-Time Bipolar Switch Family Symbol Package LH, 1-layer PCB with copper limited to solder pads Package LH, 2-layer PCB with 0.463 in. ...

Page 6

A1202 and A1203 Supply Current (On) versus Ambient Temperature (A1202/03) 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 (A1202/03) 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 ...

Page 7

A1202 and A1203 Continuous-Time Bipolar Switch Family Operate Point versus Ambient Temperature (A1202, A1203 - (°C) A Release Point versus Ambient Temperature (A1202, A1203) -5 -15 -25 -35 -45 ...

Page 8

A1202 and A1203 Bipolar Device Switching The devices of the A120X family provide highly sensitive switching for applications using magnetic fields of alternating polarities, such as ring magnets. There are three switching modes for bipolar devices, referred to as latch, ...

Page 9

A1202 and A1203 the field is reduced beyond the B level, the device switches OP back to the low state. The typical output behavior of the A120x devices is latching. That is, switching to the low state when the magnetic ...

Page 10

A1202 and A1203 The choice between continuous-time and chopper-stabilized designs is solely determined by the application. Battery manage- ment is an example where continuous-time is often required. In these applications chopped with a very small duty cycle CC ...

Page 11

A1202 and A1203 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 ...

Page 12

A1202 and A1203 +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 dambar protrusions Exact ...

Page 13

A1202 and A1203 4.09 45° +0.08 3.02 –0.05 2.16 MAX 0.51 REF 1 2 15.75 ±0.51 +0.05 0.43 –0.07 Copyright ©2005-2010, Allegro MicroSystems, Inc. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such de par tures ...

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