A1201EUA-T

A1201EUA-T Datasheet


A1201

Part Datasheet
A1201EUA-T A1201EUA-T A1201EUA-T (pdf)
Related Parts Information
A1201LUA-T A1201LUA-T A1201LUA-T
A1201ELHLT-T A1201ELHLT-T A1201ELHLT-T
A1201LLHLT-T A1201LLHLT-T A1201LLHLT-T
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A1201

Continuous-Time Bipolar Switch

Continuous-time operation Fast power-on time Low noise
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

The A1201 Hall-effect bipolar switch is a nextgeneration replacement and extension of the popular Allegro A3134 bipolar switch. Overall, the A1201, produced with BiCMOS technology, is a continuous-time device that features 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 lowoffset amplifiers help to minimize noise and to reduce the residual offset voltage normally caused by device overmolding, temperature excursions, and thermal stress.

TheA1201 Hall-effect bipolar switch includes 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 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. The device is a member of the A1201 product family which has identical electrical characteristics throughout, but provides a range of magnetic switchpoints.

Not to scale

Continued on the next

Functional Block Diagram

Regulator

To all subcircuits

Gain

Offset

Trim Control

VOUT GND

A1201

Continuous-Time Bipolar Switch

Description continued 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 SIPfor throughhole mounting. Each package is lead Pb free, with 100% matte tin plated leadframes.

Selection Guide

Packing1

A1201ELHLT-T2 7-in. reel, 3000 pieces/reel

A1201EUA-T2

Bulk, 500 pieces/bag

A1201LLHLT-T2 7-in. reel, 3000 pieces/reel

A1201LUA-T2

Bulk, 500 pieces/bag
1Contact Allegro for additional packing options. 2Variant is obsolete.

Mounting 3-pin SOT23W surface mount
3-pin SIP through hole 3-pin SOT23W surface mount
3-pin SIP through hole

Ambient, TA to 85ºC
to 150ºC

BRP Min

BOP Max 50

Absolute Maximum Ratings

Operating Ambient Temperature

Maximum Junction Temperature Storage Temperature

Symbol VCC VRCC VOUT

VROUT IOUTSINK
More datasheets: DM74S157N | DM74S158N | CQ220-12N | CQ220-12M SL | CQ220-12M | CQ220-12D | CQ220-12B | FDR8308P | A1201LUA-T | A1201ELHLT-T


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Datasheet ID: A1201EUA-T 516003