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A3240LUA Datasheet(PDF) 1 Page - Allegro MicroSystems |
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A3240LUA Datasheet(HTML) 1 Page - Allegro MicroSystems |
1 / 10 page The A3240-- Hall-effect switch is an extremely temperature-stable and stress-resistant sensor especially suited for operation over extended temperature ranges to +150 °C. Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, tempera- ture dependencies, and thermal stress. The device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short-circuit protected open-collector output to sink up to 25 mA. A south pole of sufficient strength will turn the output on. An on-board regulator permits operation with supply voltages of 4.2 to 24 volts. The first character of the part number suffix determines the device operating temperature range; suffix ‘E–’ is for -40 °C to +85°C and ‘L–’ is -40 °C to +150°C. Three package styles provide a magnetically optimized package for most applications. Suffix ‘–LH’ is a modified SOT23W surface-mount package, ‘–LT’ is a miniature SOT89/TO- 243AA transistor package for surface-mount applications; while suffix ‘–UA’ is a three-lead ultra-mini-SIP for through-hole mounting. FEATURES s Resistant to Physical Stress s Superior Temperature Stability s Output Short-Circuit Protection s Operation From Unregulated Supply s Reverse Battery Protection s Solid-State Reliability s Small Size Suffix ‘–LT’ & ‘–UA’ Pinning (SOT89/TO-243AA & ultra-min SIP) Pinning is shown viewed from branded side. CHOPPER-STABILIZED, PRECISION HALL-EFFECT SWITCH 3240 Supply Voltage, VCC ........................ 26.5 V Reverse Battery Voltage, VRCC .......... -30 V Magnetic Flux Density, B ........... Unlimited Output OFF Voltage, VOUT ................. 26 V Continuous Output Current, IOUT .......................................... 25 mA* Reverse Output Current, IOUT ........ -50 mA Package Power Dissipation, PD . See Graph Junction Temperature, TJ ............... +165°C Operating Temperature Range, TA Suffix ‘E–’ .................. -40 °C to +85°C Suffix ‘L–’ ................ -40 °C to +150°C Storage Temperature Range, TS .............................. -65°C to +170°C *Internal current limiting is intended to protect the device from output short circuits. ABSOLUTE MAXIMUM RATINGS at TA = +25°C Always order by complete part number: the prefix ‘A’ + the basic four- digit part number + a suffix to indicate operating temperature range + a suffix to indicate package style, e.g., A3240ELH . Dwg. PH-003-2 1 V CC 3 2 PTCT |
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