A1201 Continuous-Time Bipolar Switch
●DESCRIPTION
■The Allegro A1201 Hall-effect bipolar switch is a next-generation 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 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 A1201 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 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. The device is a member of the A1201 product family which has identical electrical characteristics throughout, but provides a range of 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, aminiature 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%mattetin plated leadframes.
●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
|
Continuous-Time Bipolar Switch 、 Bipolar Switch 、 Hall-effect bipolar switch |
|
|
[ automotive applications ][ motor commutation applications ] |
|
|
Datasheet |
|
|
|
|
Please see the document for details |
|
|
|
|
|
|
|
|
|
|
|
English Chinese Chinese and English Japanese |
|
|
November 4, 2016 |
|
|
Rev. 15 |
|
|
A1201-DS |
|
|
806 KB |
- +1 Like
- Add to Favorites
Recommend
All reproduced articles on this site are for the purpose of conveying more information and clearly indicate the source. If media or individuals who do not want to be reproduced can contact us, which will be deleted.
Integrated Circuits
Discrete Components
Connectors & Structural Components
Assembly UnitModules & Accessories
Power Supplies & Power Modules
Electronic Materials
Instrumentation & Test Kit
Electrical Tools & Materials
Mechatronics
Processing & Customization
