A1210, A1211, A1212, A1213, and A1214: Continuous-Time Latch Family

The Allegro A1210-A1214 Hall-effect latches are next generation replacements for the popular Allegro 317x and 318x lines of latching switches. The A121x family, produced with BiCMOS technology, consists of 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 A1210-A1214 Hall-effect latches 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 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 provided 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.

SAMPLE & BUY

Astrorep Inc. (Allegro and Sanken Semiconductors, Sanken Power Supplies)
141 John Street, Suite 300
Babylon, NY 11702
Phone: (631)422-2500
Fax: (631)422-2504
Web: www.astrorepinc.com
Email: donna.tweedy@astrorepinc.com

If this is not your local representative, find your local sales rep here.

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  • Features and BenefitsFeatures and Benefits
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  • 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

Application Notes

Replacement Device Characteristics Table

Device A121x Characteristics
BOP BRP Hys
Legacy Replacement Min Max Min Max Min Max
UGN3177 A1210 25 150 -150 -25 50 -
UGN3175 A1211 15 180 -180 -15 80 -
A3187 A1212 50 175 -175 -50 100 350
A3188 A1213 80 200 -200 -80 160 400
A3185 A1214 140 300 -300 -140 280 600

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Product Image Functional Block Diagram

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
A1210ELHLT-T 3-lead SOT -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A1210ELHLX-T 3-lead SOT -40°C to 85°C Yes View Data Contact your
local sales rep
Check Stock
A1210LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1210LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1210LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1211LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1212LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1212LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1212LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1213LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1213LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1213LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1214LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1214LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock
A1214LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

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